Gamepad device events - Web/WASM (#1414)

Add gamepad support for stdweb and web-sys, as well as web-specific gamepad examples. 

* [web] Fix compilation error from device api

* [wasm] Apply device api changes

* [wasm] Format and cleanup

* [wasm32] Implement gamepad connections

* [wasm] Harmonize

* [Test] Made some tests with wasm-pack

* Quick fix instant non supporting Hash trait

* Fix on_received_character

* [web_sys] Split add_event and add_window_event

* [web] split device implementations

* Update tests/web...still does not work

* [tests/web] do not ignore index.html

* [web/web_sys] split canvas and window

* [tests/web] enable stack trace

* [web] fix borrowmut

* [web_sys] fix gamepad registration

* [web] harmonize naming

* [web_sys] create global emitter

* [web] implement gamepad buttons

* [web] implement gamepad axis

* [web] cleanup

* [web] update test

* [web] move tests/web to examples/web

* [web] axis does produce stick event

* [web] Support Stick event

* [web] implement gamepad to stdweb

* [web] rename examples/web to examples/wasm

* [web/web-sys] Move gamepad_manager from backend

* [web/web_sys] implement EventLoop::gamepads

* [web/web_sys] Drain gamepad events

* [web/stdweb] apply web_sys changes

* [web] update web/examples

* [web] move gamepads code to gamepad_manager

* [web] simplify and optimise

* [web] replace EventCode to GamepadAxis and GamepadButton structs

* [web] reuse gamepad events due to chrome issue

* [web] rumble does not work

* [web/stdweb] try debugging

* [web] fix Chrome gamepad not updated

* [web/stdweb] created an example

* [examples] fix paths

* fix warnings

* [web/examples] update comments

* [web/stdweb] add experimental support to vibrate()

* [web] add CR

.github/workflows/ci.yml

@@ -1,107 +0,0 @@
-name: CI
-
-on:
-  pull_request:
-    paths:
-      - '**.rs'
-      - '**.toml'
-      - '.github/workflows/ci.yml'
-  push:
-    branches: [master]
-    paths:
-      - '**.rs'
-      - '**.toml'
-      - '.github/workflows/ci.yml'
-
-jobs:
-  Check_Formatting:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v1
-    - uses: hecrj/setup-rust-action@v1
-      with:
-        rust-version: stable
-        components: rustfmt
-    - name: Check Formatting
-      run: cargo +stable fmt --all -- --check
-
-  Tests:
-    strategy:
-      fail-fast: false
-      matrix:
-        rust_version: [stable, nightly]
-        platform:
-          - { target: x86_64-pc-windows-msvc,   os: windows-latest,  }
-          - { target: i686-pc-windows-msvc,     os: windows-latest,  }
-          - { target: x86_64-pc-windows-gnu,    os: windows-latest, host: -x86_64-pc-windows-gnu }
-          - { target: i686-pc-windows-gnu,      os: windows-latest, host: -i686-pc-windows-gnu }
-          - { target: i686-unknown-linux-gnu,   os: ubuntu-latest,   }
-          - { target: x86_64-unknown-linux-gnu, os: ubuntu-latest,   }
-          - { target: x86_64-apple-darwin,      os: macos-latest,    }
-          - { target: x86_64-apple-ios,         os: macos-latest,    }
-          - { target: armv7-apple-ios,          os: macos-latest,    }
-          - { target: aarch64-apple-ios,        os: macos-latest,    }
-          # We're using Windows rather than Ubuntu to run the wasm tests because caching cargo-web
-          # doesn't currently work on Linux.
-          - { target: wasm32-unknown-unknown,   os: windows-latest, features: stdweb,  web: web }
-          - { target: wasm32-unknown-unknown,   os: windows-latest, features: web-sys, web: web }
-
-    env:
-      RUST_BACKTRACE: 1
-      CARGO_INCREMENTAL: 0
-      RUSTFLAGS: "-C debuginfo=0"
-      FEATURES: ${{ format(',{0}', matrix.platform.features ) }}
-      WEB: ${{ matrix.platform.web }}
-
-    runs-on: ${{ matrix.platform.os }}
-    steps:
-    - uses: actions/checkout@v1
-    # Used to cache cargo-web
-    - name: Cache cargo folder
-      uses: actions/cache@v1
-      with:
-        path: ~/.cargo
-        key: ${{ matrix.platform.target }}-cargo-${{ matrix.rust_version }}
-
-    - uses: hecrj/setup-rust-action@v1
-      with:
-        rust-version: ${{ matrix.rust_version }}${{ matrix.platform.host }}
-        targets: ${{ matrix.platform.target }}
-
-    - name: Install GCC Multilib
-      if: (matrix.platform.os == 'ubuntu-latest') && contains(matrix.platform.target, 'i686')
-      run: sudo apt-get update && sudo apt-get install gcc-multilib
-    - name: Install cargo-web
-      continue-on-error: true
-      if: contains(matrix.platform.target, 'wasm32')
-      run: cargo install cargo-web
-
-    - name: Check documentation
-      shell: bash
-      if: matrix.platform.target != 'wasm32-unknown-unknown'
-      run: cargo doc --no-deps --target ${{ matrix.platform.target }} --features $FEATURES
-
-    - name: Build
-      shell: bash
-      run: cargo $WEB build --verbose --target ${{ matrix.platform.target }} --features $FEATURES
-
-    - name: Build tests
-      shell: bash
-      run: cargo $WEB test --no-run --verbose --target ${{ matrix.platform.target }} --features $FEATURES
-    - name: Run tests
-      shell: bash
-      if: (!contains(matrix.platform.target, 'ios') && !contains(matrix.platform.target, 'wasm32'))
-      run: cargo $WEB test --verbose --target ${{ matrix.platform.target }} --features $FEATURES
-
-
-    - name: Build with serde enabled
-      shell: bash
-      run: cargo $WEB build --verbose --target ${{ matrix.platform.target }} --features serde,$FEATURES
-
-    - name: Build tests with serde enabled
-      shell: bash
-      run: cargo $WEB test --no-run --verbose --target ${{ matrix.platform.target }} --features serde,$FEATURES
-    - name: Run tests with serde enabled
-      shell: bash
-      if: (!contains(matrix.platform.target, 'ios') && !contains(matrix.platform.target, 'wasm32'))
-      run: cargo $WEB test --verbose --target ${{ matrix.platform.target }} --features serde,$FEATURES

.github/workflows/publish.yml

@@ -1,18 +0,0 @@
-name: Publish
-
-on:
-  push:
-    branches: [master]
-    paths: "Cargo.toml"
-
-jobs:
-  Publish:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v1
-    - uses: hecrj/setup-rust-action@v1
-      with:
-        rust-version: stable
-        components: rustfmt
-    - name: Publish to crates.io
-      run: cargo publish --token ${{ secrets.cratesio_token }}

.gitignore

@@ -2,6 +2,7 @@ Cargo.lock
 target/
 rls/
 .vscode/
+.cargo/
 util/
 *~
 *.wasm

.travis.yml

@@ -0,0 +1,104 @@
+language: rust
+
+matrix:
+  include:
+    # Linux 32bit
+    - env: TARGET=i686-unknown-linux-gnu
+      os: linux
+      rust: nightly
+      addons:
+        apt:
+          # Cross compiler and cross compiled C libraries
+          packages: &i686_packages
+            - gcc-multilib
+    - env: TARGET=i686-unknown-linux-gnu
+      os: linux
+      rust: stable
+      addons:
+        apt:
+          packages: *i686_packages
+
+    # Linux 64bit
+    - env: TARGET=x86_64-unknown-linux-gnu
+      os: linux
+      rust: nightly
+    - env: TARGET=x86_64-unknown-linux-gnu
+      os: linux
+      rust: stable
+
+    # macOS
+    - env: TARGET=x86_64-apple-darwin
+      os: osx
+      rust: nightly
+    - env: TARGET=x86_64-apple-darwin
+      os: osx
+      rust: stable
+
+    # iOS x86_64
+    - env: TARGET=x86_64-apple-ios
+      os: osx
+      rust: nightly
+    - env: TARGET=x86_64-apple-ios
+      os: osx
+      rust: stable
+
+    # iOS armv7
+    - env: TARGET=armv7-apple-ios
+      os: osx
+      rust: nightly
+    - env: TARGET=armv7-apple-ios
+      os: osx
+      rust: stable
+
+    # iOS arm64
+    - env: TARGET=aarch64-apple-ios
+      os: osx
+      rust: nightly
+    - env: TARGET=aarch64-apple-ios
+      os: osx
+      rust: stable
+
+    # wasm stdweb
+    - env: TARGET=wasm32-unknown-unknown WEB=web FEATURES=stdweb
+      os: linux
+      rust: stable
+    - env: TARGET=wasm32-unknown-unknown WEB=web FEATURES=stdweb
+      os: linux
+      rust: nightly
+    # wasm web-sys
+    - env: TARGET=wasm32-unknown-unknown FEATURES=web-sys
+      os: linux
+      rust: stable
+    - env: TARGET=wasm32-unknown-unknown FEATURES=web-sys
+      os: linux
+      rust: nightly
+
+install:
+  - rustup self update
+  - rustup target add $TARGET; true
+  - rustup toolchain install stable
+  - rustup component add rustfmt --toolchain stable
+
+script:
+  - cargo +stable fmt --all -- --check
+  # Ensure that the documentation builds properly.
+  - cargo doc --no-deps
+  # Install cargo-web to build stdweb
+  - if [[ $WEB = "web" ]]; then cargo install -f cargo-web; fi
+  # Build without serde then with serde
+  - if [[ -z "$FEATURES" ]]; then
+      cargo $WEB build --target $TARGET --verbose;
+    else
+      cargo $WEB build --target $TARGET --features $FEATURES --verbose;
+    fi
+  - cargo $WEB build --target $TARGET --features serde,$FEATURES --verbose
+  # Running iOS apps on macOS requires the Simulator so we skip that for now
+  # The web targets also don't support running tests
+  - if [[ $TARGET != *-apple-ios && $TARGET != wasm32-* ]]; then cargo test --target $TARGET --verbose; fi
+  - if [[ $TARGET != *-apple-ios && $TARGET != wasm32-* ]]; then cargo test --target $TARGET --features serde --verbose; fi
+
+after_success:
+  - |
+      [ $TRAVIS_BRANCH = master ] &&
+      [ $TRAVIS_PULL_REQUEST = false ] &&
+      cargo publish --token ${CRATESIO_TOKEN}

CHANGELOG.md

@@ -1,47 +1,5 @@
 # Unreleased
 
-# 0.20.0 (2020-01-05)
-
-- On X11, fix `ModifiersChanged` emitting incorrect modifier change events
-- **Breaking**: Overhaul how Winit handles DPI:
-  + Window functions and events now return `PhysicalSize` instead of `LogicalSize`.
-  + Functions that take `Size` or `Position` types can now take either `Logical` or `Physical` types.
-  + `hidpi_factor` has been renamed to `scale_factor`.
-  + `HiDpiFactorChanged` has been renamed to `ScaleFactorChanged`, and lets you control how the OS
-    resizes the window in response to the change.
-  + On X11, deprecate `WINIT_HIDPI_FACTOR` environment variable in favor of `WINIT_X11_SCALE_FACTOR`.
-  + `Size` and `Position` types are now generic over their exact pixel type.
-
-# 0.20.0 Alpha 6 (2020-01-03)
-
-- On macOS, fix `set_cursor_visible` hides cursor outside of window.
-- On macOS, fix `CursorEntered` and `CursorLeft` events fired at old window size.
-- On macOS, fix error when `set_fullscreen` is called during fullscreen transition.
-- On all platforms except mobile and WASM, implement `Window::set_minimized`.
-- On X11, fix `CursorEntered` event being generated for non-winit windows.
-- On macOS, fix crash when starting maximized without decorations.
-- On macOS, fix application not to terminate on `run_return`.
-- On Wayland, fix cursor icon updates on window borders when using CSD.
-- On Wayland, under mutter(GNOME Wayland), fix CSD being behind the status bar, when starting window in maximized mode.
-- On Windows, theme the title bar according to whether the system theme is "Light" or "Dark".
-- Added `WindowEvent::ThemeChanged` variant to handle changes to the system theme. Currently only implemented on Windows.
-- **Breaking**: Changes to the `RedrawRequested` event (#1041):
-  - `RedrawRequested` has been moved from `WindowEvent` to `Event`.
-  - `EventsCleared` has been renamed to `MainEventsCleared`.
-  - `RedrawRequested` is now issued only after `MainEventsCleared`.
-  - `RedrawEventsCleared` is issued after each set of `RedrawRequested` events.
-- Implement synthetic window focus key events on Windows.
-- **Breaking**: Change `ModifiersState` to a `bitflags` struct.
-- On Windows, implement `VirtualKeyCode` translation for `LWin` and `RWin`.
-- On Windows, fix closing the last opened window causing `DeviceEvent`s to stop getting emitted.
-- On Windows, fix `Window::set_visible` not setting internal flags correctly. This resulted in some weird behavior.
-- Add `DeviceEvent::ModifiersChanged`.
-  - Deprecate `modifiers` fields in other events in favor of `ModifiersChanged`.
-- On X11, `WINIT_HIDPI_FACTOR` now dominates `Xft.dpi` when picking DPI factor for output.
-- On X11, add special value `randr` for `WINIT_HIDPI_FACTOR` to make winit use self computed DPI factor instead of the one from `Xft.dpi`.
-
-# 0.20.0 Alpha 5 (2019-12-09)
-
 - On macOS, fix application termination on `ControlFlow::Exit`
 - On Windows, fix missing `ReceivedCharacter` events when Alt is held.
 - On macOS, stop emitting private corporate characters in `ReceivedCharacter` events.
@@ -50,13 +8,6 @@
 - On X11, fix key modifiers being incorrectly reported.
 - On X11, fix window creation hanging when another window is fullscreen.
 - On Windows, fix focusing unfocused windows when switching from fullscreen to windowed.
-- On X11, fix reporting incorrect DPI factor when waking from suspend.
-- Change `EventLoopClosed` to contain the original event.
-- **Breaking**: Add `is_synthetic` field to `WindowEvent` variant `KeyboardInput`,
-  indicating that the event is generated by winit.
-- On X11, generate synthetic key events for keys held when a window gains or loses focus.
-- On X11, issue a `CursorMoved` event when a `Touch` event occurs,
-  as X11 implicitly moves the cursor for such events.
 
 # 0.20.0 Alpha 4 (2019-10-18)
 
@@ -84,7 +35,6 @@
 - On X11, return dummy monitor data to avoid panicking when no monitors exist.
 - On X11, prevent stealing input focus when creating a new window.
   Only steal input focus when entering fullscreen mode.
-- On Wayland, fixed DeviceEvents for relative mouse movement is not always produced
 - On Wayland, add support for set_cursor_visible and set_cursor_grab.
 - On Wayland, fixed DeviceEvents for relative mouse movement is not always produced.
 - Removed `derivative` crate dependency.
@@ -101,7 +51,6 @@
     reduces the potential for cross-platform compatibility gotchyas.
 - On Windows and Linux X11/Wayland, add platform-specific functions for creating an `EventLoop` outside the main thread.
 - On Wayland, drop resize events identical to the current window size.
-- On Windows, fix window rectangle not getting set correctly on high-DPI systems.
 
 # 0.20.0 Alpha 3 (2019-08-14)
 
@@ -201,6 +150,20 @@ and `WindowEvent::HoveredFile`.
 - On Windows, fix initial dimensions of a fullscreen window.
 - On Windows, Fix transparent borderless windows rendering wrong.
 
+- Improve event API documentation.
+- Overhaul device event API:
+  - **Breaking**: `Event::DeviceEvent` split into `MouseEvent`, `KeyboardEvent`, and `GamepadEvent`.
+  - **Breaking**: Remove `DeviceEvent::Text` variant.
+  - **Breaking**: `DeviceId` split into `MouseId`, `KeyboardId`, and `GamepadHandle`.
+  - **Breaking**: Removed device IDs from `WindowEvent` variants.
+  - Add `enumerate` function on device ID types to list all attached devices of that type.
+  - Add `is_connected` function on device ID types check if the specified device is still available.
+  - **Breaking**: On Windows, rename `DeviceIdExtWindows` to `DeviceExtWindows`.
+    - Add `handle` function to retrieve the underlying `HANDLE`.
+- On Windows, fix duplicate device events getting sent if Winit managed multiple windows.
+- On Windows, raw mouse events now report Mouse4 and Mouse5 presses and releases.
+- Added gamepad support on Windows via raw input and XInput.
+
 # Version 0.19.1 (2019-04-08)
 
 - On Wayland, added a `get_wayland_display` function to `EventsLoopExt`.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "winit"
-version = "0.20.0"
+version = "0.20.0-alpha4"
 authors = ["The winit contributors", "Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform window creation library."
 edition = "2018"
@@ -25,7 +25,6 @@ libc = "0.2.64"
 log = "0.4"
 serde = { version = "1", optional = true, features = ["serde_derive"] }
 raw-window-handle = "0.3"
-bitflags = "1"
 
 [dev-dependencies]
 image = "0.21"
@@ -42,13 +41,17 @@ cocoa = "0.19.1"
 core-foundation = "0.6"
 core-graphics = "0.17.3"
 dispatch = "0.1.4"
-objc = "0.2.6"
+objc = "0.2.3"
 
 [target.'cfg(target_os = "macos")'.dependencies.core-video-sys]
 version = "0.1.3"
 default_features = false
 features = ["display_link"]
 
+[target.'cfg(any(target_os = "ios", target_os = "windows"))'.dependencies]
+bitflags = "1"
+rusty-xinput = "1.0"
+
 [target.'cfg(target_os = "windows")'.dependencies.winapi]
 version = "0.3.6"
 features = [
@@ -56,6 +59,7 @@ features = [
     "commctrl",
     "dwmapi",
     "errhandlingapi",
+    "hidpi",
     "hidusage",
     "libloaderapi",
     "objbase",
@@ -71,12 +75,12 @@ features = [
     "wingdi",
     "winnt",
     "winuser",
+    "xinput",
 ]
 
 [target.'cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd", target_os = "netbsd"))'.dependencies]
 wayland-client = { version = "0.23.0", features = [ "dlopen", "egl", "cursor", "eventloop"] }
-mio = "0.6"
-mio-extras = "2.0"
+calloop = "0.4.2"
 smithay-client-toolkit = "0.6"
 x11-dl = "2.18.3"
 percent-encoding = "2.0"
@@ -90,7 +94,6 @@ version = "0.3.22"
 optional = true
 features = [
     'console',
-    'CssStyleDeclaration',
     'BeforeUnloadEvent',
     'Document',
     'DomRect',
@@ -103,9 +106,24 @@ features = [
     'KeyboardEvent',
     'MouseEvent',
     'Node',
+    'Navigator',
     'PointerEvent',
     'Window',
-    'WheelEvent'
+    'WheelEvent',
+    'Gamepad',
+    'GamepadAxisMoveEvent',
+    'GamepadAxisMoveEventInit',
+    'GamepadButton',
+    'GamepadButtonEvent',
+    'GamepadButtonEventInit',
+    'GamepadEvent',
+    'GamepadEventInit',
+    'GamepadHand',
+    'GamepadHapticActuator',
+    'GamepadHapticActuatorType',
+    'GamepadMappingType',
+    'GamepadPose',
+    'GamepadServiceTest'
 ]
 
 [target.'cfg(target_arch = "wasm32")'.dependencies.wasm-bindgen]
@@ -117,6 +135,3 @@ package = "stdweb"
 version = "=0.4.20"
 optional = true
 features = ["experimental_features_which_may_break_on_minor_version_bumps"]
-
-[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-console_log = "0.1"

FEATURES.md

@@ -80,7 +80,6 @@ If your PR makes notable changes to Winit's features, please update this section
 - **Window maximization**: The windows created by winit can be maximized upon creation.
 - **Window maximization toggle**: The windows created by winit can be maximized and unmaximized after
   creation.
-- **Window minimization**: The windows created by winit can be minimized after creation.
 - **Fullscreen**: The windows created by winit can be put into fullscreen mode.
 - **Fullscreen toggle**: The windows created by winit can be switched to and from fullscreen after
   creation.
@@ -117,7 +116,6 @@ If your PR makes notable changes to Winit's features, please update this section
 * Setting the taskbar icon
 * Setting the parent window
 * `WS_EX_NOREDIRECTIONBITMAP` support
-* Theme the title bar according to Windows 10 Dark Mode setting
 
 ### macOS
 * Window activation policy
@@ -175,7 +173,6 @@ Legend:
 |Window transparency              |✔️     |✔️     |✔️         |✔️             |**N/A**|**N/A**|N/A        |
 |Window maximization              |✔️     |✔️     |✔️         |✔️             |**N/A**|**N/A**|**N/A**|
 |Window maximization toggle       |✔️     |✔️     |✔️         |✔️             |**N/A**|**N/A**|**N/A**|
-|Window minimization              |✔️     |✔️     |✔️         |✔️             |**N/A**|**N/A**|**N/A**|
 |Fullscreen                       |✔️     |✔️     |✔️         |✔️             |**N/A**|✔️     |✔️        |
 |Fullscreen toggle                |✔️     |✔️     |✔️         |✔️             |**N/A**|✔️     |✔️        |
 |Exclusive fullscreen             |✔️     |✔️     |✔️         |**N/A**         |❌    |✔️     |**N/A**|

README.md

@@ -7,7 +7,7 @@
 
 ```toml
 [dependencies]
-winit = "0.20.0"
+winit = "0.20.0-alpha4"
 ```
 
 ## [Documentation](https://docs.rs/winit)

appveyor.yml

@@ -0,0 +1,35 @@
+environment:
+  matrix:
+  - TARGET: x86_64-pc-windows-msvc
+    CHANNEL: stable
+  - TARGET: i686-pc-windows-msvc
+    CHANNEL: stable
+  - TARGET: x86_64-pc-windows-gnu
+    CHANNEL: stable
+  - TARGET: i686-pc-windows-gnu
+    CHANNEL: stable
+  - TARGET: x86_64-pc-windows-msvc
+    CHANNEL: nightly
+  - TARGET: i686-pc-windows-msvc
+    CHANNEL: nightly
+  - TARGET: x86_64-pc-windows-gnu
+    CHANNEL: nightly
+  - TARGET: i686-pc-windows-gnu
+    CHANNEL: nightly
+matrix:
+  allow_failures:
+    - CHANNEL: nightly
+install:
+  - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
+  - rustup-init -yv --default-toolchain %CHANNEL% --default-host %TARGET%
+  - SET PATH=%PATH%;%USERPROFILE%\.cargo\bin
+  - SET PATH=%PATH%;C:\MinGW\bin
+  - rustc -V
+  - cargo -V
+
+build: false
+
+test_script:
+  - cargo test --verbose
+  - cargo test --features serde --verbose
+  - cargo doc --no-deps

examples/cursor.rs

@@ -12,39 +12,31 @@ fn main() {
 
     let mut cursor_idx = 0;
 
-    event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
-
-        match event {
-            Event::WindowEvent {
-                event:
-                    WindowEvent::KeyboardInput {
-                        input:
-                            KeyboardInput {
-                                state: ElementState::Pressed,
-                                ..
-                            },
-                        ..
-                    },
-                ..
-            } => {
-                println!("Setting cursor to \"{:?}\"", CURSORS[cursor_idx]);
-                window.set_cursor_icon(CURSORS[cursor_idx]);
-                if cursor_idx < CURSORS.len() - 1 {
-                    cursor_idx += 1;
-                } else {
-                    cursor_idx = 0;
-                }
+    event_loop.run(move |event, _, control_flow| match event {
+        Event::WindowEvent {
+            event:
+                WindowEvent::KeyboardInput(KeyboardInput {
+                    state: ElementState::Pressed,
+                    ..
+                }),
+            ..
+        } => {
+            println!("Setting cursor to \"{:?}\"", CURSORS[cursor_idx]);
+            window.set_cursor_icon(CURSORS[cursor_idx]);
+            if cursor_idx < CURSORS.len() - 1 {
+                cursor_idx += 1;
+            } else {
+                cursor_idx = 0;
             }
-            Event::WindowEvent {
-                event: WindowEvent::CloseRequested,
-                ..
-            } => {
-                *control_flow = ControlFlow::Exit;
-                return;
-            }
-            _ => (),
         }
+        Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            ..
+        } => {
+            *control_flow = ControlFlow::Exit;
+            return;
+        }
+        _ => (),
     });
 }
 

examples/cursor_grab.rs

@@ -1,5 +1,5 @@
 use winit::{
-    event::{DeviceEvent, ElementState, Event, KeyboardInput, ModifiersState, WindowEvent},
+    event::{DeviceEvent, ElementState, Event, KeyboardInput, WindowEvent},
     event_loop::{ControlFlow, EventLoop},
     window::WindowBuilder,
 };
@@ -12,28 +12,22 @@ fn main() {
         .build(&event_loop)
         .unwrap();
 
-    let mut modifiers = ModifiersState::default();
-
     event_loop.run(move |event, _, control_flow| {
         *control_flow = ControlFlow::Wait;
-
         match event {
             Event::WindowEvent { event, .. } => match event {
                 WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
-                WindowEvent::KeyboardInput {
-                    input:
-                        KeyboardInput {
-                            state: ElementState::Released,
-                            virtual_keycode: Some(key),
-                            ..
-                        },
+                WindowEvent::KeyboardInput(KeyboardInput {
+                    state: ElementState::Released,
+                    virtual_keycode: Some(key),
+                    modifiers,
                     ..
-                } => {
+                }) => {
                     use winit::event::VirtualKeyCode::*;
                     match key {
                         Escape => *control_flow = ControlFlow::Exit,
-                        G => window.set_cursor_grab(!modifiers.shift()).unwrap(),
-                        H => window.set_cursor_visible(modifiers.shift()),
+                        G => window.set_cursor_grab(!modifiers.shift).unwrap(),
+                        H => window.set_cursor_visible(modifiers.shift),
                         _ => (),
                     }
                 }
@@ -45,7 +39,6 @@ fn main() {
                     ElementState::Pressed => println!("mouse button {} pressed", button),
                     ElementState::Released => println!("mouse button {} released", button),
                 },
-                DeviceEvent::ModifiersChanged(m) => modifiers = m,
                 _ => (),
             },
             _ => (),

examples/custom_events.rs

@@ -31,17 +31,13 @@ fn main() {
         }
     });
 
-    event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
-
-        match event {
-            Event::UserEvent(event) => println!("user event: {:?}", event),
-            Event::WindowEvent {
-                event: WindowEvent::CloseRequested,
-                ..
-            } => *control_flow = ControlFlow::Exit,
-            _ => (),
-        }
+    event_loop.run(move |event, _, control_flow| match event {
+        Event::UserEvent(event) => println!("user event: {:?}", event),
+        Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            ..
+        } => *control_flow = ControlFlow::Exit,
+        _ => *control_flow = ControlFlow::Wait,
     });
 }
 

examples/fullscreen.rs

@@ -35,15 +35,11 @@ fn main() {
         match event {
             Event::WindowEvent { event, .. } => match event {
                 WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
-                WindowEvent::KeyboardInput {
-                    input:
-                        KeyboardInput {
-                            virtual_keycode: Some(virtual_code),
-                            state,
-                            ..
-                        },
+                WindowEvent::KeyboardInput(KeyboardInput {
+                    virtual_keycode: Some(virtual_code),
+                    state,
                     ..
-                } => match (virtual_code, state) {
+                }) => match (virtual_code, state) {
                     (VirtualKeyCode::Escape, _) => *control_flow = ControlFlow::Exit,
                     (VirtualKeyCode::F, ElementState::Pressed) => {
                         if window.fullscreen().is_some() {

examples/gamepad.rs

@@ -0,0 +1,52 @@
+use winit::{
+    event::{
+        device::{GamepadEvent, GamepadHandle},
+        Event, WindowEvent,
+    },
+    event_loop::{ControlFlow, EventLoop},
+    window::WindowBuilder,
+};
+
+fn main() {
+    let event_loop = EventLoop::new();
+
+    let _window = WindowBuilder::new()
+        .with_title("The world's worst video game")
+        .build(&event_loop)
+        .unwrap();
+
+    println!("enumerating gamepads:");
+    for gamepad in GamepadHandle::enumerate(&event_loop) {
+        println!(
+            "    gamepad={:?}\tport={:?}\tbattery level={:?}",
+            gamepad,
+            gamepad.port(),
+            gamepad.battery_level()
+        );
+    }
+
+    let deadzone = 0.12;
+
+    event_loop.run(move |event, _, control_flow| {
+        match event {
+            Event::GamepadEvent(gamepad_handle, event) => {
+                match event {
+                    // Discard any Axis events that has a corresponding Stick event.
+                    GamepadEvent::Axis { stick: true, .. } => (),
+
+                    // Discard any Stick event that falls inside the stick's deadzone.
+                    GamepadEvent::Stick {
+                        x_value, y_value, ..
+                    } if (x_value.powi(2) + y_value.powi(2)).sqrt() < deadzone => (),
+
+                    _ => println!("[{:?}] {:#?}", gamepad_handle, event),
+                }
+            }
+            Event::WindowEvent {
+                event: WindowEvent::CloseRequested,
+                ..
+            } => *control_flow = ControlFlow::Exit,
+            _ => (),
+        }
+    });
+}

examples/gamepad_rumble.rs

@@ -0,0 +1,60 @@
+use std::time::Instant;
+use winit::event_loop::EventLoop;
+
+#[derive(Debug, Clone)]
+enum Rumble {
+    None,
+    Left,
+    Right,
+}
+
+fn main() {
+    let event_loop = EventLoop::new();
+
+    // You should generally use `GamepadEvent::Added/Removed` to detect gamepads, as doing that will
+    // allow you to more easily support gamepad hotswapping. However, we're using `enumerate` here
+    // because it makes this example more concise.
+    let gamepads = winit::event::device::GamepadHandle::enumerate(&event_loop).collect::<Vec<_>>();
+
+    let rumble_patterns = &[
+        (0.5, Rumble::None),
+        (2.0, Rumble::Left),
+        (0.5, Rumble::None),
+        (2.0, Rumble::Right),
+    ];
+    let mut rumble_iter = rumble_patterns.iter().cloned().cycle();
+
+    let mut active_pattern = rumble_iter.next().unwrap();
+    let mut timeout = active_pattern.0;
+    let mut timeout_start = Instant::now();
+
+    event_loop.run(move |_, _, _| {
+        if timeout <= active_pattern.0 {
+            let t = (timeout / active_pattern.0) * std::f64::consts::PI;
+            let intensity = t.sin();
+
+            for g in &gamepads {
+                let result = match active_pattern.1 {
+                    Rumble::Left => g.rumble(intensity, 0.0),
+                    Rumble::Right => g.rumble(0.0, intensity),
+                    Rumble::None => Ok(()),
+                };
+
+                if let Err(e) = result {
+                    println!("Rumble failed: {:?}", e);
+                }
+            }
+
+            timeout = (Instant::now() - timeout_start).as_millis() as f64 / 1000.0;
+        } else {
+            active_pattern = rumble_iter.next().unwrap();
+            println!(
+                "Rumbling {:?} for {:?} seconds",
+                active_pattern.1, active_pattern.0
+            );
+
+            timeout = 0.0;
+            timeout_start = Instant::now();
+        }
+    });
+}

examples/handling_close.rs

@@ -41,15 +41,11 @@ fn main() {
                         // closing the window. How to close the window is detailed in the handler for
                         // the Y key.
                     }
-                    WindowEvent::KeyboardInput {
-                        input:
-                            KeyboardInput {
-                                virtual_keycode: Some(virtual_code),
-                                state: Released,
-                                ..
-                            },
+                    WindowEvent::KeyboardInput(KeyboardInput {
+                        virtual_keycode: Some(virtual_code),
+                        state: Released,
                         ..
-                    } => {
+                    }) => {
                         match virtual_code {
                             Y => {
                                 if close_requested {

examples/min_max_size.rs

@@ -14,7 +14,6 @@ fn main() {
     window.set_max_inner_size(Some(LogicalSize::new(800.0, 400.0)));
 
     event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
         println!("{:?}", event);
 
         match event {
@@ -22,7 +21,7 @@ fn main() {
                 event: WindowEvent::CloseRequested,
                 ..
             } => *control_flow = ControlFlow::Exit,
-            _ => (),
+            _ => *control_flow = ControlFlow::Wait,
         }
     });
 }

examples/minimize.rs

@@ -1,39 +0,0 @@
-extern crate winit;
-
-use winit::event::{Event, VirtualKeyCode, WindowEvent};
-use winit::event_loop::{ControlFlow, EventLoop};
-use winit::window::WindowBuilder;
-
-fn main() {
-    let event_loop = EventLoop::new();
-
-    let window = WindowBuilder::new()
-        .with_title("A fantastic window!")
-        .build(&event_loop)
-        .unwrap();
-
-    event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
-
-        match event {
-            Event::WindowEvent {
-                event: WindowEvent::CloseRequested,
-                ..
-            } => *control_flow = ControlFlow::Exit,
-
-            // Keyboard input event to handle minimize via a hotkey
-            Event::WindowEvent {
-                event: WindowEvent::KeyboardInput { input, .. },
-                window_id,
-            } => {
-                if window_id == window.id() {
-                    // Pressing the 'M' key will minimize the window
-                    if input.virtual_keycode == Some(VirtualKeyCode::M) {
-                        window.set_minimized(true);
-                    }
-                }
-            }
-            _ => (),
-        }
-    });
-}

examples/multithreaded.rs

@@ -5,21 +5,20 @@ fn main() {
     use std::{collections::HashMap, sync::mpsc, thread, time::Duration};
 
     use winit::{
-        dpi::{PhysicalPosition, PhysicalSize, Position, Size},
         event::{ElementState, Event, KeyboardInput, VirtualKeyCode, WindowEvent},
         event_loop::{ControlFlow, EventLoop},
         window::{CursorIcon, Fullscreen, WindowBuilder},
     };
 
     const WINDOW_COUNT: usize = 3;
-    const WINDOW_SIZE: PhysicalSize<u32> = PhysicalSize::new(600, 400);
+    const WINDOW_SIZE: (u32, u32) = (600, 400);
 
     env_logger::init();
     let event_loop = EventLoop::new();
     let mut window_senders = HashMap::with_capacity(WINDOW_COUNT);
     for _ in 0..WINDOW_COUNT {
         let window = WindowBuilder::new()
-            .with_inner_size(WINDOW_SIZE)
+            .with_inner_size(WINDOW_SIZE.into())
             .build(&event_loop)
             .unwrap();
 
@@ -50,19 +49,14 @@ fn main() {
                             );
                         }
                     }
-                    #[allow(deprecated)]
-                    WindowEvent::KeyboardInput {
-                        input:
-                            KeyboardInput {
-                                state: ElementState::Released,
-                                virtual_keycode: Some(key),
-                                modifiers,
-                                ..
-                            },
+                    WindowEvent::KeyboardInput(KeyboardInput {
+                        state: ElementState::Released,
+                        virtual_keycode: Some(key),
+                        modifiers,
                         ..
-                    } => {
+                    }) => {
                         window.set_title(&format!("{:?}", key));
-                        let state = !modifiers.shift();
+                        let state = !modifiers.shift;
                         use VirtualKeyCode::*;
                         match key {
                             A => window.set_always_on_top(state),
@@ -83,7 +77,7 @@ fn main() {
                                     video_modes.iter().nth(video_mode_id).unwrap()
                                 );
                             }
-                            F => window.set_fullscreen(match (state, modifiers.alt()) {
+                            F => window.set_fullscreen(match (state, modifiers.alt) {
                                 (true, false) => {
                                     Some(Fullscreen::Borderless(window.current_monitor()))
                                 }
@@ -103,38 +97,31 @@ fn main() {
                                 println!("-> fullscreen     : {:?}", window.fullscreen());
                             }
                             L => window.set_min_inner_size(match state {
-                                true => Some(WINDOW_SIZE),
+                                true => Some(WINDOW_SIZE.into()),
                                 false => None,
                             }),
                             M => window.set_maximized(state),
                             P => window.set_outer_position({
                                 let mut position = window.outer_position().unwrap();
-                                let sign = if state { 1 } else { -1 };
-                                position.x += 10 * sign;
-                                position.y += 10 * sign;
+                                let sign = if state { 1.0 } else { -1.0 };
+                                position.x += 10.0 * sign;
+                                position.y += 10.0 * sign;
                                 position
                             }),
                             Q => window.request_redraw(),
                             R => window.set_resizable(state),
-                            S => window.set_inner_size(match state {
-                                true => PhysicalSize::new(
-                                    WINDOW_SIZE.width + 100,
-                                    WINDOW_SIZE.height + 100,
-                                ),
-                                false => WINDOW_SIZE,
-                            }),
-                            W => {
-                                if let Size::Physical(size) = WINDOW_SIZE.into() {
-                                    window
-                                        .set_cursor_position(Position::Physical(
-                                            PhysicalPosition::new(
-                                                size.width as i32 / 2,
-                                                size.height as i32 / 2,
-                                            ),
-                                        ))
-                                        .unwrap()
+                            S => window.set_inner_size(
+                                match state {
+                                    true => (WINDOW_SIZE.0 + 100, WINDOW_SIZE.1 + 100),
+                                    false => WINDOW_SIZE,
                                 }
-                            }
+                                .into(),
+                            ),
+                            W => window
+                                .set_cursor_position(
+                                    (WINDOW_SIZE.0 as i32 / 2, WINDOW_SIZE.1 as i32 / 2).into(),
+                                )
+                                .unwrap(),
                             Z => {
                                 window.set_visible(false);
                                 thread::sleep(Duration::from_secs(1));
@@ -157,22 +144,16 @@ fn main() {
             Event::WindowEvent { event, window_id } => match event {
                 WindowEvent::CloseRequested
                 | WindowEvent::Destroyed
-                | WindowEvent::KeyboardInput {
-                    input:
-                        KeyboardInput {
-                            state: ElementState::Released,
-                            virtual_keycode: Some(VirtualKeyCode::Escape),
-                            ..
-                        },
+                | WindowEvent::KeyboardInput(KeyboardInput {
+                state: ElementState::Released,
+                    virtual_keycode: Some(VirtualKeyCode::Escape),
                     ..
-                } => {
+                }) => {
                     window_senders.remove(&window_id);
                 }
                 _ => {
                     if let Some(tx) = window_senders.get(&window_id) {
-                        if let Some(event) = event.to_static() {
-                            tx.send(event).unwrap();
-                        }
+                        tx.send(event).unwrap();
                     }
                 }
             },

examples/multiwindow.rs

@@ -16,7 +16,6 @@ fn main() {
 
     event_loop.run(move |event, event_loop, control_flow| {
         *control_flow = ControlFlow::Wait;
-
         match event {
             Event::WindowEvent { event, window_id } => {
                 match event {
@@ -30,14 +29,10 @@ fn main() {
                             *control_flow = ControlFlow::Exit;
                         }
                     }
-                    WindowEvent::KeyboardInput {
-                        input:
-                            KeyboardInput {
-                                state: ElementState::Pressed,
-                                ..
-                            },
+                    WindowEvent::KeyboardInput(KeyboardInput {
+                        state: ElementState::Pressed,
                         ..
-                    } => {
+                    }) => {
                         let window = Window::new(&event_loop).unwrap();
                         windows.insert(window.id(), window);
                     }

examples/request_redraw.rs

@@ -1,5 +1,8 @@
+use instant::Instant;
+use std::time::Duration;
+
 use winit::{
-    event::{ElementState, Event, WindowEvent},
+    event::{Event, WindowEvent},
     event_loop::{ControlFlow, EventLoop},
     window::WindowBuilder,
 };
@@ -12,26 +15,21 @@ fn main() {
         .build(&event_loop)
         .unwrap();
 
-    event_loop.run(move |event, _, control_flow| {
-        println!("{:?}", event);
-
-        *control_flow = ControlFlow::Wait;
-
-        match event {
-            Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
-                WindowEvent::MouseInput {
-                    state: ElementState::Released,
-                    ..
-                } => {
-                    window.request_redraw();
-                }
-                _ => (),
-            },
-            Event::RedrawRequested(_) => {
-                println!("\nredrawing!\n");
-            }
-            _ => (),
+    event_loop.run(move |event, _, control_flow| match event {
+        Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            ..
+        } => *control_flow = ControlFlow::Exit,
+        Event::EventsCleared => {
+            window.request_redraw();
+            *control_flow = ControlFlow::WaitUntil(Instant::now() + Duration::new(1, 0))
         }
+        Event::WindowEvent {
+            event: WindowEvent::RedrawRequested,
+            ..
+        } => {
+            println!("{:?}", event);
+        }
+        _ => (),
     });
 }

examples/resizable.rs

@@ -1,5 +1,4 @@
 use winit::{
-    dpi::LogicalSize,
     event::{ElementState, Event, KeyboardInput, VirtualKeyCode, WindowEvent},
     event_loop::{ControlFlow, EventLoop},
     window::WindowBuilder,
@@ -12,26 +11,21 @@ fn main() {
 
     let window = WindowBuilder::new()
         .with_title("Hit space to toggle resizability.")
-        .with_inner_size(LogicalSize::new(400.0, 200.0))
+        .with_inner_size((400, 200).into())
         .with_resizable(resizable)
         .build(&event_loop)
         .unwrap();
 
     event_loop.run(move |event, _, control_flow| {
         *control_flow = ControlFlow::Wait;
-
         match event {
             Event::WindowEvent { event, .. } => match event {
                 WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
-                WindowEvent::KeyboardInput {
-                    input:
-                        KeyboardInput {
-                            virtual_keycode: Some(VirtualKeyCode::Space),
-                            state: ElementState::Released,
-                            ..
-                        },
+                WindowEvent::KeyboardInput(KeyboardInput {
+                    virtual_keycode: Some(VirtualKeyCode::Space),
+                    state: ElementState::Released,
                     ..
-                } => {
+                }) => {
                     resizable = !resizable;
                     println!("Resizable: {}", resizable);
                     window.set_resizable(resizable);

examples/transparent.rs

@@ -16,7 +16,6 @@ fn main() {
     window.set_title("A fantastic window!");
 
     event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
         println!("{:?}", event);
 
         match event {
@@ -24,7 +23,7 @@ fn main() {
                 event: WindowEvent::CloseRequested,
                 ..
             } => *control_flow = ControlFlow::Exit,
-            _ => (),
+            _ => *control_flow = ControlFlow::Wait,
         }
     });
 }

examples/web.rs

@@ -1,74 +0,0 @@
-use winit::{
-    event::{Event, WindowEvent},
-    event_loop::{ControlFlow, EventLoop},
-    window::WindowBuilder,
-};
-
-pub fn main() {
-    let event_loop = EventLoop::new();
-
-    let window = WindowBuilder::new()
-        .with_title("A fantastic window!")
-        .build(&event_loop)
-        .unwrap();
-
-    #[cfg(feature = "web-sys")]
-    {
-        use winit::platform::web::WindowExtWebSys;
-
-        let canvas = window.canvas();
-
-        let window = web_sys::window().unwrap();
-        let document = window.document().unwrap();
-        let body = document.body().unwrap();
-
-        body.append_child(&canvas)
-            .expect("Append canvas to HTML body");
-    }
-
-    #[cfg(feature = "stdweb")]
-    {
-        use std_web::web::INode;
-        use winit::platform::web::WindowExtStdweb;
-
-        let canvas = window.canvas();
-
-        let document = std_web::web::document();
-        let body: std_web::web::Node = document.body().expect("Get HTML body").into();
-
-        body.append_child(&canvas);
-    }
-
-    event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
-
-        #[cfg(feature = "web-sys")]
-        log::debug!("{:?}", event);
-
-        #[cfg(feature = "stdweb")]
-        std_web::console!(log, "%s", format!("{:?}", event));
-
-        match event {
-            Event::WindowEvent {
-                event: WindowEvent::CloseRequested,
-                window_id,
-            } if window_id == window.id() => *control_flow = ControlFlow::Exit,
-            Event::MainEventsCleared => {
-                window.request_redraw();
-            }
-            _ => (),
-        }
-    });
-}
-
-#[cfg(feature = "web-sys")]
-mod wasm {
-    use wasm_bindgen::prelude::*;
-
-    #[wasm_bindgen(start)]
-    pub fn run() {
-        console_log::init_with_level(log::Level::Debug);
-
-        super::main();
-    }
-}

examples/web/gamepad/stdweb/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "stdweb-gamepad"
+version = "0.1.0"
+authors = ["furiouzz <christophe.massolin@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+winit = { path = "../../../../", features = [ "stdweb" ] }
+stdweb = "0.4.20"

examples/web/gamepad/stdweb/src/main.rs

@@ -0,0 +1,80 @@
+use winit::{
+    event::{device::GamepadEvent, Event, WindowEvent},
+    event_loop::{ControlFlow, EventLoop},
+    window::WindowBuilder,
+};
+
+use stdweb::js;
+
+/**
+ * Build example (from examples/web/gamepad/stdweb):
+ *    cargo web build
+ * Run example (from examples/web/gamepad/stdweb):
+ *    cargo web start
+ * Development (from project root):
+ *    npx nodemon --watch src --watch examples/web/gamepad/stdweb/src -e rs --exec 'cargo web check'
+ */
+
+pub fn main() {
+    let event_loop = EventLoop::new();
+
+    let _window = WindowBuilder::new()
+        .with_title("Gamepad tests")
+        .build(&event_loop)
+        .unwrap();
+
+    let deadzone = 0.12;
+
+    event_loop.run(move |event, _, control_flow| match event {
+        Event::GamepadEvent(gamepad_handle, event) => match event {
+            GamepadEvent::Axis {
+                axis_id,
+                axis,
+                value,
+                stick,
+            } if value > deadzone => {
+                let string = format!("Axis {:#?} {:#?} {:#?} {:#?}", axis_id, axis, value, stick);
+                js! { console.log( @{string} ); }
+            }
+
+            GamepadEvent::Stick {
+                x_id,
+                y_id,
+                x_value,
+                y_value,
+                side,
+            } if (x_value.powi(2) + y_value.powi(2)).sqrt() > deadzone => {
+                let string = format!(
+                    "Stick {:#?} {:#?} {:#?} {:#?} {:#?}",
+                    x_id, y_id, x_value, y_value, side
+                );
+                js! { console.log( @{string} ); }
+            }
+
+            GamepadEvent::Button {
+                button_id,
+                button,
+                state,
+            } => {
+                let string = format!("Button {:#?} {:#?} {:#?}", button_id, button, state);
+                js! { console.log( @{string} ); }
+            }
+
+            GamepadEvent::Added => {
+                let string = format!("[{:?}] {:#?}", gamepad_handle, event);
+                js! { console.log( @{string} ); }
+            }
+            GamepadEvent::Removed => {
+                let string = format!("[{:?}] {:#?}", gamepad_handle, event);
+                js! { console.log( @{string} ); }
+            }
+
+            _ => {}
+        },
+        Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            ..
+        } => *control_flow = ControlFlow::Exit,
+        _ => (),
+    });
+}

examples/web/gamepad/websys/.gitignore

@@ -0,0 +1,7 @@
+/target
+**/*.rs.bk
+Cargo.lock
+bin/
+pkg/
+wasm-pack.log
+.DS_Store

examples/web/gamepad/websys/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "websys-gamepad"
+version = "0.0.1"
+authors = ["The winit contributors", "Pierre Krieger <pierre.krieger1708@gmail.com>"]
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+winit = { path = "../../../../", features = [ "web-sys" ] }
+wasm-bindgen = "0.2.45"
+wasm-bindgen-test = "0.3.8"
+web-sys = { version = "0.3.22", features = [ "console" ] }
+
+# The `console_error_panic_hook` crate provides better debugging of panics by
+# logging them with `console.error`. This is great for development, but requires
+# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
+# code size when deploying.
+console_error_panic_hook = "0.1.6"

examples/web/gamepad/websys/files/gamepad.html

@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta http-equiv="X-UA-Compatible" content="ie=edge">
+  <title>Gamepad</title>
+</head>
+<body>
+  <canvas id="my_id"></canvas>
+  <script>
+    window.Module = {
+      canvas: document.getElementById('my_id')
+    }
+  </script>
+  <script type="module">
+    import example_gamepad from "../pkg/websys_examples.js"
+    example_gamepad()
+    .then((m) => console.log('Success', m))
+    .catch((e) => console.log('Ar error occured', e))
+  </script>
+</body>
+</html>

examples/web/gamepad/websys/src/lib.rs

@@ -0,0 +1,78 @@
+mod utils;
+
+use wasm_bindgen::prelude::*;
+use winit::{
+    event::{device::GamepadEvent, Event, WindowEvent},
+    event_loop::{ControlFlow, EventLoop},
+    window::WindowBuilder,
+};
+
+/**
+ * Build example (from examples/gamepad/websys):
+ *    wasm-pack build --target web
+ * Run web server (from examples/gamepad/websys):
+ *    npx http-server
+ *    Open your browser at http://localhost:8000/files/${EXAMPLE}.html
+ * Development (from project root):
+ *    npx nodemon --watch src --watch examples/web/gamepad/websys/src -e rs --exec 'cd examples/web/gamepad/websys && wasm-pack build --target web'
+ */
+
+macro_rules! console_log {
+  ($($t:tt)*) => (web_sys::console::log_1(&format_args!($($t)*).to_string().into()))
+}
+
+#[wasm_bindgen(start)]
+pub fn example_gamepad() {
+    utils::set_panic_hook(); // needed for error stack trace
+    let event_loop = EventLoop::new();
+
+    let _window = WindowBuilder::new()
+        .with_title("Gamepad tests")
+        .build(&event_loop)
+        .unwrap();
+
+    let deadzone = 0.12;
+
+    event_loop.run(move |event, _, control_flow| {
+        match event {
+            Event::GamepadEvent(gamepad_handle, event) => {
+                match event {
+                    GamepadEvent::Axis {
+                        axis_id,
+                        axis,
+                        value,
+                        stick,
+                    } if value > deadzone => {
+                        console_log!("Axis {:#?} {:#?} {:#?} {:#?}", axis_id, axis, value, stick)
+                    },
+
+                    GamepadEvent::Stick {
+                        x_id, y_id, x_value, y_value, side
+                    } if (x_value.powi(2) + y_value.powi(2)).sqrt() > deadzone => {
+                        console_log!("Stick {:#?} {:#?} {:#?} {:#?} {:#?}", x_id, y_id, x_value, y_value, side)
+                    },
+
+                    GamepadEvent::Button {
+                        button_id,
+                        button,
+                        state,
+                    } => {
+                        console_log!("Button {:#?} {:#?} {:#?}", button_id, button, state)
+                    },
+
+                    GamepadEvent::Added => {
+                        console_log!("[{:?}] {:#?}", gamepad_handle, event)
+                    },
+                    GamepadEvent::Removed => console_log!("[{:?}] {:#?}", gamepad_handle, event),
+
+                    _ => {},
+                }
+            }
+            Event::WindowEvent {
+                event: WindowEvent::CloseRequested,
+                ..
+            } => *control_flow = ControlFlow::Exit,
+            _ => (),
+        }
+    });
+}

examples/web/gamepad/websys/src/utils.rs

@@ -0,0 +1,10 @@
+pub fn set_panic_hook() {
+  // When the `console_error_panic_hook` feature is enabled, we can call the
+  // `set_panic_hook` function at least once during initialization, and then
+  // we will get better error messages if our code ever panics.
+  //
+  // For more details see
+  // https://github.com/rustwasm/console_error_panic_hook#readme
+  // #[cfg(feature = "console_error_panic_hook")]
+  console_error_panic_hook::set_once();
+}

examples/window.rs

@@ -9,12 +9,10 @@ fn main() {
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")
-        .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
         .build(&event_loop)
         .unwrap();
 
     event_loop.run(move |event, _, control_flow| {
-        *control_flow = ControlFlow::Wait;
         println!("{:?}", event);
 
         match event {
@@ -22,10 +20,7 @@ fn main() {
                 event: WindowEvent::CloseRequested,
                 window_id,
             } if window_id == window.id() => *control_flow = ControlFlow::Exit,
-            Event::MainEventsCleared => {
-                window.request_redraw();
-            }
-            _ => (),
+            _ => *control_flow = ControlFlow::Wait,
         }
     });
 }

examples/window_debug.rs

@@ -12,18 +12,20 @@ fn main() {
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")
-        .with_inner_size(LogicalSize::new(100.0, 100.0))
+        .with_inner_size(LogicalSize::from((100, 100)))
         .build(&event_loop)
         .unwrap();
 
     eprintln!("debugging keys:");
     eprintln!("  (E) Enter exclusive fullscreen");
     eprintln!("  (F) Toggle borderless fullscreen");
+    #[cfg(waiting_for_set_minimized)]
     eprintln!("  (M) Toggle minimized");
     eprintln!("  (Q) Quit event loop");
     eprintln!("  (V) Toggle visibility");
     eprintln!("  (X) Toggle maximized");
 
+    #[cfg(waiting_for_set_minimized)]
     let mut minimized = false;
     let mut maximized = false;
     let mut visible = true;
@@ -41,6 +43,7 @@ fn main() {
                     }),
                 ..
             } => match key {
+                #[cfg(waiting_for_set_minimized)]
                 VirtualKeyCode::M => {
                     if minimized {
                         minimized = !minimized;
@@ -65,15 +68,16 @@ fn main() {
                     ..
                 } => match key {
                     VirtualKeyCode::E => {
-                        fn area(size: PhysicalSize<u32>) -> u32 {
+                        fn area(size: PhysicalSize) -> f64 {
                             size.width * size.height
                         }
 
                         let monitor = window.current_monitor();
-                        if let Some(mode) = monitor
-                            .video_modes()
-                            .max_by(|a, b| area(a.size()).cmp(&area(b.size())))
-                        {
+                        if let Some(mode) = monitor.video_modes().max_by(|a, b| {
+                            area(a.size())
+                                .partial_cmp(&area(b.size()))
+                                .expect("NaN in video mode size")
+                        }) {
                             window.set_fullscreen(Some(Fullscreen::Exclusive(mode)));
                         } else {
                             eprintln!("no video modes available");
@@ -87,6 +91,7 @@ fn main() {
                             window.set_fullscreen(Some(Fullscreen::Borderless(monitor)));
                         }
                     }
+                    #[cfg(waiting_for_set_minimized)]
                     VirtualKeyCode::M => {
                         minimized = !minimized;
                         window.set_minimized(minimized);

examples/window_icon.rs

@@ -27,7 +27,6 @@ fn main() {
 
     event_loop.run(move |event, _, control_flow| {
         *control_flow = ControlFlow::Wait;
-
         if let Event::WindowEvent { event, .. } = event {
             use winit::event::WindowEvent::*;
             match event {

examples/window_run_return.rs

@@ -38,8 +38,9 @@ fn main() {
                     ..
                 } => {
                     quit = true;
+                    *control_flow = ControlFlow::Exit;
                 }
-                Event::MainEventsCleared => {
+                Event::EventsCleared => {
                     *control_flow = ControlFlow::Exit;
                 }
                 _ => *control_flow = ControlFlow::Wait,
@@ -47,7 +48,6 @@ fn main() {
         });
 
         // Sleep for 1/60 second to simulate rendering
-        println!("rendering");
         sleep(Duration::from_millis(16));
     }
 }

src/dpi.rs

@@ -1,498 +1,331 @@
-//! UI scaling is important, so read the docs for this module if you don't want to be confused.
+//! DPI is important, so read the docs for this module if you don't want to be confused.
 //!
-//! ## Why should I care about UI scaling?
+//! Originally, `winit` dealt entirely in physical pixels (excluding unintentional inconsistencies), but now all
+//! window-related functions both produce and consume logical pixels. Monitor-related functions still use physical
+//! pixels, as do any context-related functions in `glutin`.
 //!
-//! Modern computer screens don't have a consistent relationship between resolution and size.
-//! 1920x1080 is a common resolution for both desktop and mobile screens, despite mobile screens
-//! normally being less than a quarter the size of their desktop counterparts. What's more, neither
-//! desktop nor mobile screens are consistent resolutions within their own size classes - common
-//! mobile screens range from below 720p to above 1440p, and desktop screens range from 720p to 5K
-//! and beyond.
+//! If you've never heard of these terms before, then you're not alone, and this documentation will explain the
+//! concepts.
 //!
-//! Given that, it's a mistake to assume that 2D content will only be displayed on screens with
-//! a consistent pixel density. If you were to render a 96-pixel-square image on a 1080p screen,
-//! then render the same image on a similarly-sized 4K screen, the 4K rendition would only take up
-//! about a quarter of the physical space as it did on the 1080p screen. That issue is especially
-//! problematic with text rendering, where quarter-sized text becomes a significant legibility
-//! problem.
+//! Modern screens have a defined physical resolution, most commonly 1920x1080. Indepedent of that is the amount of
+//! space the screen occupies, which is to say, the height and width in millimeters. The relationship between these two
+//! measurements is the *pixel density*. Mobile screens require a high pixel density, as they're held close to the
+//! eyes. Larger displays also require a higher pixel density, hence the growing presence of 1440p and 4K displays.
 //!
-//! Failure to account for the scale factor can create a significantly degraded user experience.
-//! Most notably, it can make users feel like they have bad eyesight, which will potentially cause
-//! them to think about growing elderly, resulting in them having an existential crisis. Once users
-//! enter that state, they will no longer be focused on your application.
+//! So, this presents a problem. Let's say we want to render a square 100px button. It will occupy 100x100 of the
+//! screen's pixels, which in many cases, seems perfectly fine. However, because this size doesn't account for the
+//! screen's dimensions or pixel density, the button's size can vary quite a bit. On a 4K display, it would be unusably
+//! small.
 //!
-//! ## How should I handle it?
+//! That's a description of what happens when the button is 100x100 *physical* pixels. Instead, let's try using 100x100
+//! *logical* pixels. To map logical pixels to physical pixels, we simply multiply by the DPI (dots per inch) factor.
+//! On a "typical" desktop display, the DPI factor will be 1.0, so 100x100 logical pixels equates to 100x100 physical
+//! pixels. However, a 1440p display may have a DPI factor of 1.25, so the button is rendered as 125x125 physical pixels.
+//! Ideally, the button now has approximately the same perceived size across varying displays.
 //!
-//! The solution to this problem is to account for the device's *scale factor*. The scale factor is
-//! the factor UI elements should be scaled by to be consistent with the rest of the user's system -
-//! for example, a button that's normally 50 pixels across would be 100 pixels across on a device
-//! with a scale factor of `2.0`, or 75 pixels across with a scale factor of `1.5`.
+//! Failure to account for the DPI factor can create a badly degraded user experience. Most notably, it can make users
+//! feel like they have bad eyesight, which will potentially cause them to think about growing elderly, resulting in
+//! them entering an existential panic. Once users enter that state, they will no longer be focused on your application.
 //!
-//! Many UI systems, such as CSS, expose DPI-dependent units like [points] or [picas]. That's
-//! usually a mistake, since there's no consistent mapping between the scale factor and the screen's
-//! actual DPI. Unless you're printing to a physical medium, you should work in scaled pixels rather
-//! than any DPI-dependent units.
+//! There are two ways to get the DPI factor:
+//! - You can track the [`HiDpiFactorChanged`](crate::event::WindowEvent::HiDpiFactorChanged) event of your
+//!   windows. This event is sent any time the DPI factor changes, either because the window moved to another monitor,
+//!   or because the user changed the configuration of their screen.
+//! - You can also retrieve the DPI factor of a monitor by calling
+//!   [`MonitorHandle::hidpi_factor`](crate::monitor::MonitorHandle::hidpi_factor), or the
+//!   current DPI factor applied to a window by calling
+//!   [`Window::hidpi_factor`](crate::window::Window::hidpi_factor), which is roughly equivalent
+//!   to `window.current_monitor().hidpi_factor()`.
 //!
-//! ### Position and Size types
+//! Depending on the platform, the window's actual DPI factor may only be known after
+//! the event loop has started and your window has been drawn once. To properly handle these cases,
+//! the most robust way is to monitor the [`HiDpiFactorChanged`](crate::event::WindowEvent::HiDpiFactorChanged)
+//! event and dynamically adapt your drawing logic to follow the DPI factor.
 //!
-//! Winit's `Physical(Position|Size)` types correspond with the actual pixels on the device, and the
-//! `Logical(Position|Size)` types correspond to the physical pixels divided by the scale factor.
-//! All of Winit's functions return physical types, but can take either logical or physical
-//! coordinates as input, allowing you to use the most convenient coordinate system for your
-//! particular application.
+//! Here's an overview of what sort of DPI factors you can expect, and where they come from:
+//! - **Windows:** On Windows 8 and 10, per-monitor scaling is readily configured by users from the display settings.
+//! While users are free to select any option they want, they're only given a selection of "nice" DPI factors, i.e.
+//! 1.0, 1.25, 1.5... on Windows 7, the DPI factor is global and changing it requires logging out.
+//! - **macOS:** The buzzword is "retina displays", which have a DPI factor of 2.0. Otherwise, the DPI factor is 1.0.
+//! Intermediate DPI factors are never used, thus 1440p displays/etc. aren't properly supported. It's possible for any
+//! display to use that 2.0 DPI factor, given the use of the command line.
+//! - **X11:** On X11, we calculate the DPI factor based on the millimeter dimensions provided by XRandR. This can
+//! result in a wide range of possible values, including some interesting ones like 1.0833333333333333. This can be
+//! overridden using the `WINIT_HIDPI_FACTOR` environment variable, though that's not recommended.
+//! - **Wayland:** On Wayland, DPI factors are set per-screen by the server, and are always integers (most often 1 or 2).
+//! - **iOS:** DPI factors are both constant and device-specific on iOS.
+//! - **Android:** This feature isn't yet implemented on Android, so the DPI factor will always be returned as 1.0.
+//! - **Web:** DPI factors are handled by the browser and will always be 1.0 for your application.
 //!
-//! Winit's position and size types types are generic over their exact pixel type, `P`, to allow the
-//! API to have integer precision where appropriate (e.g. most window manipulation functions) and
-//! floating precision when necessary (e.g. logical sizes for fractional scale factors and touch
-//! input). If `P` is a floating-point type, please do not cast the values with `as {int}`. Doing so
-//! will truncate the fractional part of the float, rather than properly round to the nearest
-//! integer. Use the provided `cast` function or `From`/`Into` conversions, which handle the
-//! rounding properly. Note that precision loss will still occur when rounding from a float to an
-//! int, although rounding lessens the problem.
+//! The window's logical size is conserved across DPI changes, resulting in the physical size changing instead. This
+//! may be surprising on X11, but is quite standard elsewhere. Physical size changes always produce a
+//! [`Resized`](crate::event::WindowEvent::Resized) event, even on platforms where no resize actually occurs,
+//! such as macOS and Wayland. As a result, it's not necessary to separately handle
+//! [`HiDpiFactorChanged`](crate::event::WindowEvent::HiDpiFactorChanged) if you're only listening for size.
 //!
-//! ### Events
+//! Your GPU has no awareness of the concept of logical pixels, and unless you like wasting pixel density, your
+//! framebuffer's size should be in physical pixels.
 //!
-//! Winit will dispatch a [`ScaleFactorChanged`](crate::event::WindowEvent::ScaleFactorChanged)
-//! event whenever a window's scale factor has changed. This can happen if the user drags their
-//! window from a standard-resolution monitor to a high-DPI monitor, or if the user changes their
-//! DPI settings. This gives you a chance to rescale your application's UI elements and adjust how
-//! the platform changes the window's size to reflect the new scale factor. If a window hasn't
-//! received a [`ScaleFactorChanged`](crate::event::WindowEvent::ScaleFactorChanged) event,
-//! then its scale factor is `1.0`.
+//! `winit` will send [`Resized`](crate::event::WindowEvent::Resized) events whenever a window's logical size
+//! changes, and [`HiDpiFactorChanged`](crate::event::WindowEvent::HiDpiFactorChanged) events
+//! whenever the DPI factor changes. Receiving either of these events means that the physical size of your window has
+//! changed, and you should recompute it using the latest values you received for each. If the logical size and the
+//! DPI factor change simultaneously, `winit` will send both events together; thus, it's recommended to buffer
+//! these events and process them at the end of the queue.
 //!
-//! ## How is the scale factor calculated?
-//!
-//! Scale factor is calculated differently on different platforms:
-//!
-//! - **Windows:** On Windows 8 and 10, per-monitor scaling is readily configured by users from the
-//!   display settings. While users are free to select any option they want, they're only given a
-//!   selection of "nice" scale factors, i.e. 1.0, 1.25, 1.5... on Windows 7, the scale factor is
-//!   global and changing it requires logging out. See [this article][windows_1] for technical
-//!   details.
-//! - **macOS:** "retina displays" have a scale factor of 2.0. Otherwise, the scale factor is 1.0.
-//!   Intermediate scale factors are never used. It's possible for any display to use that 2.0 scale
-//!   factor, given the use of the command line.
-//! - **X11:** Many man-hours have been spent trying to figure out how to handle DPI in X11. Winit
-//!   currently uses a three-pronged approach:
-//!   + Use the value in the `WINIT_X11_SCALE_FACTOR` environment variable, if present.
-//!   + If not present, use the value set in `Xft.dpi` in Xresources.
-//!   + Otherwise, calcuate the scale factor based on the millimeter monitor dimensions provided by XRandR.
-//!
-//!   If `WINIT_X11_SCALE_FACTOR` is set to `randr`, it'll ignore the `Xft.dpi` field and use the
-//!   XRandR scaling method. Generally speaking, you should try to configure the standard system
-//!   variables to do what you want before resorting to `WINIT_X11_SCALE_FACTOR`.
-//! - **Wayland:** On Wayland, scale factors are set per-screen by the server, and are always
-//!   integers (most often 1 or 2).
-//! - **iOS:** Scale factors are set by Apple to the value that best suits the device, and range
-//!   from `1.0` to `3.0`. See [this article][apple_1] and [this article][apple_2] for more
-//!   information.
-//! - **Android:** Scale factors are set by the manufacturer to the value that best suits the
-//!   device, and range from `1.0` to `4.0`. See [this article][android_1] for more information.
-//! - **Web:** The scale factor is the ratio between CSS pixels and the physical device pixels.
-//!
-//! [points]: https://en.wikipedia.org/wiki/Point_(typography)
-//! [picas]: https://en.wikipedia.org/wiki/Pica_(typography)
-//! [windows_1]: https://docs.microsoft.com/en-us/windows/win32/hidpi/high-dpi-desktop-application-development-on-windows
-//! [apple_1]: https://developer.apple.com/library/archive/documentation/DeviceInformation/Reference/iOSDeviceCompatibility/Displays/Displays.html
-//! [apple_2]: https://developer.apple.com/design/human-interface-guidelines/macos/icons-and-images/image-size-and-resolution/
-//! [android_1]: https://developer.android.com/training/multiscreen/screendensities
+//! If you never received any [`HiDpiFactorChanged`](crate::event::WindowEvent::HiDpiFactorChanged) events,
+//! then your window's DPI factor is 1.
 
-pub trait Pixel: Copy + Into<f64> {
-    fn from_f64(f: f64) -> Self;
-    fn cast<P: Pixel>(self) -> P {
-        P::from_f64(self.into())
-    }
-}
-
-impl Pixel for u8 {
-    fn from_f64(f: f64) -> Self {
-        f.round() as u8
-    }
-}
-impl Pixel for u16 {
-    fn from_f64(f: f64) -> Self {
-        f.round() as u16
-    }
-}
-impl Pixel for u32 {
-    fn from_f64(f: f64) -> Self {
-        f.round() as u32
-    }
-}
-impl Pixel for i8 {
-    fn from_f64(f: f64) -> Self {
-        f.round() as i8
-    }
-}
-impl Pixel for i16 {
-    fn from_f64(f: f64) -> Self {
-        f.round() as i16
-    }
-}
-impl Pixel for i32 {
-    fn from_f64(f: f64) -> Self {
-        f.round() as i32
-    }
-}
-impl Pixel for f32 {
-    fn from_f64(f: f64) -> Self {
-        f as f32
-    }
-}
-impl Pixel for f64 {
-    fn from_f64(f: f64) -> Self {
-        f
-    }
-}
-
-/// Checks that the scale factor is a normal positive `f64`.
+/// Checks that the DPI factor is a normal positive `f64`.
 ///
-/// All functions that take a scale factor assert that this will return `true`. If you're sourcing scale factors from
+/// All functions that take a DPI factor assert that this will return `true`. If you're sourcing DPI factors from
 /// anywhere other than winit, it's recommended to validate them using this function before passing them to winit;
 /// otherwise, you risk panics.
 #[inline]
-pub fn validate_scale_factor(dpi_factor: f64) -> bool {
+pub fn validate_hidpi_factor(dpi_factor: f64) -> bool {
     dpi_factor.is_sign_positive() && dpi_factor.is_normal()
 }
 
 /// A position represented in logical pixels.
 ///
-/// The position is stored as floats, so please be careful. Casting floats to integers truncates the
-/// fractional part, which can cause noticable issues. To help with that, an `Into<(i32, i32)>`
-/// implementation is provided which does the rounding for you.
+/// The position is stored as floats, so please be careful. Casting floats to integers truncates the fractional part,
+/// which can cause noticable issues. To help with that, an `Into<(i32, i32)>` implementation is provided which
+/// does the rounding for you.
 #[derive(Debug, Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub struct LogicalPosition<P> {
-    pub x: P,
-    pub y: P,
+pub struct LogicalPosition {
+    pub x: f64,
+    pub y: f64,
 }
 
-impl<P> LogicalPosition<P> {
+impl LogicalPosition {
     #[inline]
-    pub const fn new(x: P, y: P) -> Self {
+    pub fn new(x: f64, y: f64) -> Self {
         LogicalPosition { x, y }
     }
-}
 
-impl<P: Pixel> LogicalPosition<P> {
     #[inline]
-    pub fn from_physical<T: Into<PhysicalPosition<X>>, X: Pixel>(
-        physical: T,
-        dpi_factor: f64,
-    ) -> Self {
+    pub fn from_physical<T: Into<PhysicalPosition>>(physical: T, dpi_factor: f64) -> Self {
         physical.into().to_logical(dpi_factor)
     }
 
     #[inline]
-    pub fn to_physical<X: Pixel>(&self, dpi_factor: f64) -> PhysicalPosition<X> {
-        assert!(validate_scale_factor(dpi_factor));
-        let x = self.x.into() * dpi_factor;
-        let y = self.y.into() * dpi_factor;
-        PhysicalPosition::new(x, y).cast()
+    pub fn to_physical(&self, dpi_factor: f64) -> PhysicalPosition {
+        assert!(validate_hidpi_factor(dpi_factor));
+        let x = self.x * dpi_factor;
+        let y = self.y * dpi_factor;
+        PhysicalPosition::new(x, y)
     }
+}
 
+impl From<(f64, f64)> for LogicalPosition {
     #[inline]
-    pub fn cast<X: Pixel>(&self) -> LogicalPosition<X> {
-        LogicalPosition {
-            x: self.x.cast(),
-            y: self.y.cast(),
-        }
+    fn from((x, y): (f64, f64)) -> Self {
+        Self::new(x, y)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<(X, X)> for LogicalPosition<P> {
-    fn from((x, y): (X, X)) -> LogicalPosition<P> {
-        LogicalPosition::new(x.cast(), y.cast())
+impl From<(i32, i32)> for LogicalPosition {
+    #[inline]
+    fn from((x, y): (i32, i32)) -> Self {
+        Self::new(x as f64, y as f64)
     }
 }
 
-impl<P: Pixel, X: Pixel> Into<(X, X)> for LogicalPosition<P> {
-    fn into(self: Self) -> (X, X) {
-        (self.x.cast(), self.y.cast())
+impl Into<(f64, f64)> for LogicalPosition {
+    #[inline]
+    fn into(self) -> (f64, f64) {
+        (self.x, self.y)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<[X; 2]> for LogicalPosition<P> {
-    fn from([x, y]: [X; 2]) -> LogicalPosition<P> {
-        LogicalPosition::new(x.cast(), y.cast())
-    }
-}
-
-impl<P: Pixel, X: Pixel> Into<[X; 2]> for LogicalPosition<P> {
-    fn into(self: Self) -> [X; 2] {
-        [self.x.cast(), self.y.cast()]
+impl Into<(i32, i32)> for LogicalPosition {
+    /// Note that this rounds instead of truncating.
+    #[inline]
+    fn into(self) -> (i32, i32) {
+        (self.x.round() as _, self.y.round() as _)
     }
 }
 
 /// A position represented in physical pixels.
+///
+/// The position is stored as floats, so please be careful. Casting floats to integers truncates the fractional part,
+/// which can cause noticable issues. To help with that, an `Into<(i32, i32)>` implementation is provided which
+/// does the rounding for you.
 #[derive(Debug, Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub struct PhysicalPosition<P> {
-    pub x: P,
-    pub y: P,
+pub struct PhysicalPosition {
+    pub x: f64,
+    pub y: f64,
 }
 
-impl<P> PhysicalPosition<P> {
+impl PhysicalPosition {
     #[inline]
-    pub const fn new(x: P, y: P) -> Self {
+    pub fn new(x: f64, y: f64) -> Self {
         PhysicalPosition { x, y }
     }
-}
 
-impl<P: Pixel> PhysicalPosition<P> {
     #[inline]
-    pub fn from_logical<T: Into<LogicalPosition<X>>, X: Pixel>(
-        logical: T,
-        dpi_factor: f64,
-    ) -> Self {
+    pub fn from_logical<T: Into<LogicalPosition>>(logical: T, dpi_factor: f64) -> Self {
         logical.into().to_physical(dpi_factor)
     }
 
     #[inline]
-    pub fn to_logical<X: Pixel>(&self, dpi_factor: f64) -> LogicalPosition<X> {
-        assert!(validate_scale_factor(dpi_factor));
-        let x = self.x.into() / dpi_factor;
-        let y = self.y.into() / dpi_factor;
-        LogicalPosition::new(x, y).cast()
+    pub fn to_logical(&self, dpi_factor: f64) -> LogicalPosition {
+        assert!(validate_hidpi_factor(dpi_factor));
+        let x = self.x / dpi_factor;
+        let y = self.y / dpi_factor;
+        LogicalPosition::new(x, y)
     }
+}
 
+impl From<(f64, f64)> for PhysicalPosition {
     #[inline]
-    pub fn cast<X: Pixel>(&self) -> PhysicalPosition<X> {
-        PhysicalPosition {
-            x: self.x.cast(),
-            y: self.y.cast(),
-        }
+    fn from((x, y): (f64, f64)) -> Self {
+        Self::new(x, y)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<(X, X)> for PhysicalPosition<P> {
-    fn from((x, y): (X, X)) -> PhysicalPosition<P> {
-        PhysicalPosition::new(x.cast(), y.cast())
+impl From<(i32, i32)> for PhysicalPosition {
+    #[inline]
+    fn from((x, y): (i32, i32)) -> Self {
+        Self::new(x as f64, y as f64)
     }
 }
 
-impl<P: Pixel, X: Pixel> Into<(X, X)> for PhysicalPosition<P> {
-    fn into(self: Self) -> (X, X) {
-        (self.x.cast(), self.y.cast())
+impl Into<(f64, f64)> for PhysicalPosition {
+    #[inline]
+    fn into(self) -> (f64, f64) {
+        (self.x, self.y)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<[X; 2]> for PhysicalPosition<P> {
-    fn from([x, y]: [X; 2]) -> PhysicalPosition<P> {
-        PhysicalPosition::new(x.cast(), y.cast())
-    }
-}
-
-impl<P: Pixel, X: Pixel> Into<[X; 2]> for PhysicalPosition<P> {
-    fn into(self: Self) -> [X; 2] {
-        [self.x.cast(), self.y.cast()]
+impl Into<(i32, i32)> for PhysicalPosition {
+    /// Note that this rounds instead of truncating.
+    #[inline]
+    fn into(self) -> (i32, i32) {
+        (self.x.round() as _, self.y.round() as _)
     }
 }
 
 /// A size represented in logical pixels.
+///
+/// The size is stored as floats, so please be careful. Casting floats to integers truncates the fractional part,
+/// which can cause noticable issues. To help with that, an `Into<(u32, u32)>` implementation is provided which
+/// does the rounding for you.
 #[derive(Debug, Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub struct LogicalSize<P> {
-    pub width: P,
-    pub height: P,
+pub struct LogicalSize {
+    pub width: f64,
+    pub height: f64,
 }
 
-impl<P> LogicalSize<P> {
+impl LogicalSize {
     #[inline]
-    pub const fn new(width: P, height: P) -> Self {
+    pub fn new(width: f64, height: f64) -> Self {
         LogicalSize { width, height }
     }
-}
 
-impl<P: Pixel> LogicalSize<P> {
     #[inline]
-    pub fn from_physical<T: Into<PhysicalSize<X>>, X: Pixel>(physical: T, dpi_factor: f64) -> Self {
+    pub fn from_physical<T: Into<PhysicalSize>>(physical: T, dpi_factor: f64) -> Self {
         physical.into().to_logical(dpi_factor)
     }
 
     #[inline]
-    pub fn to_physical<X: Pixel>(&self, dpi_factor: f64) -> PhysicalSize<X> {
-        assert!(validate_scale_factor(dpi_factor));
-        let width = self.width.into() * dpi_factor;
-        let height = self.height.into() * dpi_factor;
-        PhysicalSize::new(width, height).cast()
+    pub fn to_physical(&self, dpi_factor: f64) -> PhysicalSize {
+        assert!(validate_hidpi_factor(dpi_factor));
+        let width = self.width * dpi_factor;
+        let height = self.height * dpi_factor;
+        PhysicalSize::new(width, height)
     }
+}
 
+impl From<(f64, f64)> for LogicalSize {
     #[inline]
-    pub fn cast<X: Pixel>(&self) -> LogicalSize<X> {
-        LogicalSize {
-            width: self.width.cast(),
-            height: self.height.cast(),
-        }
+    fn from((width, height): (f64, f64)) -> Self {
+        Self::new(width, height)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<(X, X)> for LogicalSize<P> {
-    fn from((x, y): (X, X)) -> LogicalSize<P> {
-        LogicalSize::new(x.cast(), y.cast())
+impl From<(u32, u32)> for LogicalSize {
+    #[inline]
+    fn from((width, height): (u32, u32)) -> Self {
+        Self::new(width as f64, height as f64)
     }
 }
 
-impl<P: Pixel, X: Pixel> Into<(X, X)> for LogicalSize<P> {
-    fn into(self: LogicalSize<P>) -> (X, X) {
-        (self.width.cast(), self.height.cast())
+impl Into<(f64, f64)> for LogicalSize {
+    #[inline]
+    fn into(self) -> (f64, f64) {
+        (self.width, self.height)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<[X; 2]> for LogicalSize<P> {
-    fn from([x, y]: [X; 2]) -> LogicalSize<P> {
-        LogicalSize::new(x.cast(), y.cast())
-    }
-}
-
-impl<P: Pixel, X: Pixel> Into<[X; 2]> for LogicalSize<P> {
-    fn into(self: Self) -> [X; 2] {
-        [self.width.cast(), self.height.cast()]
+impl Into<(u32, u32)> for LogicalSize {
+    /// Note that this rounds instead of truncating.
+    #[inline]
+    fn into(self) -> (u32, u32) {
+        (self.width.round() as _, self.height.round() as _)
     }
 }
 
 /// A size represented in physical pixels.
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+///
+/// The size is stored as floats, so please be careful. Casting floats to integers truncates the fractional part,
+/// which can cause noticable issues. To help with that, an `Into<(u32, u32)>` implementation is provided which
+/// does the rounding for you.
+#[derive(Debug, Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub struct PhysicalSize<P> {
-    pub width: P,
-    pub height: P,
+pub struct PhysicalSize {
+    pub width: f64,
+    pub height: f64,
 }
 
-impl<P> PhysicalSize<P> {
+impl PhysicalSize {
     #[inline]
-    pub const fn new(width: P, height: P) -> Self {
+    pub fn new(width: f64, height: f64) -> Self {
         PhysicalSize { width, height }
     }
-}
 
-impl<P: Pixel> PhysicalSize<P> {
     #[inline]
-    pub fn from_logical<T: Into<LogicalSize<X>>, X: Pixel>(logical: T, dpi_factor: f64) -> Self {
+    pub fn from_logical<T: Into<LogicalSize>>(logical: T, dpi_factor: f64) -> Self {
         logical.into().to_physical(dpi_factor)
     }
 
     #[inline]
-    pub fn to_logical<X: Pixel>(&self, dpi_factor: f64) -> LogicalSize<X> {
-        assert!(validate_scale_factor(dpi_factor));
-        let width = self.width.into() / dpi_factor;
-        let height = self.height.into() / dpi_factor;
-        LogicalSize::new(width, height).cast()
+    pub fn to_logical(&self, dpi_factor: f64) -> LogicalSize {
+        assert!(validate_hidpi_factor(dpi_factor));
+        let width = self.width / dpi_factor;
+        let height = self.height / dpi_factor;
+        LogicalSize::new(width, height)
     }
+}
 
+impl From<(f64, f64)> for PhysicalSize {
     #[inline]
-    pub fn cast<X: Pixel>(&self) -> PhysicalSize<X> {
-        PhysicalSize {
-            width: self.width.cast(),
-            height: self.height.cast(),
-        }
+    fn from((width, height): (f64, f64)) -> Self {
+        Self::new(width, height)
     }
 }
 
-impl<P: Pixel, X: Pixel> From<(X, X)> for PhysicalSize<P> {
-    fn from((x, y): (X, X)) -> PhysicalSize<P> {
-        PhysicalSize::new(x.cast(), y.cast())
-    }
-}
-
-impl<P: Pixel, X: Pixel> Into<(X, X)> for PhysicalSize<P> {
-    fn into(self: Self) -> (X, X) {
-        (self.width.cast(), self.height.cast())
-    }
-}
-
-impl<P: Pixel, X: Pixel> From<[X; 2]> for PhysicalSize<P> {
-    fn from([x, y]: [X; 2]) -> PhysicalSize<P> {
-        PhysicalSize::new(x.cast(), y.cast())
-    }
-}
-
-impl<P: Pixel, X: Pixel> Into<[X; 2]> for PhysicalSize<P> {
-    fn into(self: Self) -> [X; 2] {
-        [self.width.cast(), self.height.cast()]
-    }
-}
-
-/// A size that's either physical or logical.
-#[derive(Debug, Copy, Clone, PartialEq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub enum Size {
-    Physical(PhysicalSize<u32>),
-    Logical(LogicalSize<f64>),
-}
-
-impl Size {
-    pub fn new<S: Into<Size>>(size: S) -> Size {
-        size.into()
-    }
-
-    pub fn to_logical<P: Pixel>(&self, dpi_factor: f64) -> LogicalSize<P> {
-        match *self {
-            Size::Physical(size) => size.to_logical(dpi_factor),
-            Size::Logical(size) => size.cast(),
-        }
-    }
-
-    pub fn to_physical<P: Pixel>(&self, dpi_factor: f64) -> PhysicalSize<P> {
-        match *self {
-            Size::Physical(size) => size.cast(),
-            Size::Logical(size) => size.to_physical(dpi_factor),
-        }
-    }
-}
-
-impl<P: Pixel> From<PhysicalSize<P>> for Size {
+impl From<(u32, u32)> for PhysicalSize {
     #[inline]
-    fn from(size: PhysicalSize<P>) -> Size {
-        Size::Physical(size.cast())
+    fn from((width, height): (u32, u32)) -> Self {
+        Self::new(width as f64, height as f64)
     }
 }
 
-impl<P: Pixel> From<LogicalSize<P>> for Size {
+impl Into<(f64, f64)> for PhysicalSize {
     #[inline]
-    fn from(size: LogicalSize<P>) -> Size {
-        Size::Logical(size.cast())
+    fn into(self) -> (f64, f64) {
+        (self.width, self.height)
     }
 }
 
-/// A position that's either physical or logical.
-#[derive(Debug, Copy, Clone, PartialEq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub enum Position {
-    Physical(PhysicalPosition<i32>),
-    Logical(LogicalPosition<f64>),
-}
-
-impl Position {
-    pub fn new<S: Into<Position>>(position: S) -> Position {
-        position.into()
-    }
-
-    pub fn to_logical<P: Pixel>(&self, dpi_factor: f64) -> LogicalPosition<P> {
-        match *self {
-            Position::Physical(position) => position.to_logical(dpi_factor),
-            Position::Logical(position) => position.cast(),
-        }
-    }
-
-    pub fn to_physical<P: Pixel>(&self, dpi_factor: f64) -> PhysicalPosition<P> {
-        match *self {
-            Position::Physical(position) => position.cast(),
-            Position::Logical(position) => position.to_physical(dpi_factor),
-        }
-    }
-}
-
-impl<P: Pixel> From<PhysicalPosition<P>> for Position {
+impl Into<(u32, u32)> for PhysicalSize {
+    /// Note that this rounds instead of truncating.
     #[inline]
-    fn from(position: PhysicalPosition<P>) -> Position {
-        Position::Physical(position.cast())
-    }
-}
-
-impl<P: Pixel> From<LogicalPosition<P>> for Position {
-    #[inline]
-    fn from(position: LogicalPosition<P>) -> Position {
-        Position::Logical(position.cast())
+    fn into(self) -> (u32, u32) {
+        (self.width.round() as _, self.height.round() as _)
     }
 }

src/event.rs

@@ -3,156 +3,73 @@
 //! These are sent to the closure given to [`EventLoop::run(...)`][event_loop_run], where they get
 //! processed and used to modify the program state. For more details, see the root-level documentation.
 //!
-//! Some of these events represent different "parts" of a traditional event-handling loop. You could
-//! approximate the basic ordering loop of [`EventLoop::run(...)`][event_loop_run] like this:
-//!
-//! ```rust,ignore
-//! let mut control_flow = ControlFlow::Poll;
-//! let mut start_cause = StartCause::Init;
-//!
-//! while control_flow != ControlFlow::Exit {
-//!     event_handler(NewEvents(start_cause), ..., &mut control_flow);
-//!
-//!     for e in (window events, user events, device events) {
-//!         event_handler(e, ..., &mut control_flow);
-//!     }
-//!     event_handler(MainEventsCleared, ..., &mut control_flow);
-//!
-//!     for w in (redraw windows) {
-//!         event_handler(RedrawRequested(w), ..., &mut control_flow);
-//!     }
-//!     event_handler(RedrawEventsCleared, ..., &mut control_flow);
-//!
-//!     start_cause = wait_if_necessary(control_flow);
-//! }
-//!
-//! event_handler(LoopDestroyed, ..., &mut control_flow);
-//! ```
-//!
-//! This leaves out timing details like `ControlFlow::WaitUntil` but hopefully
-//! describes what happens in what order.
-//!
 //! [event_loop_run]: crate::event_loop::EventLoop::run
 use instant::Instant;
 use std::path::PathBuf;
 
 use crate::{
-    dpi::{LogicalPosition, PhysicalPosition, PhysicalSize},
-    platform_impl,
-    window::{Theme, WindowId},
+    dpi::{LogicalPosition, LogicalSize},
+    window::WindowId,
 };
 
-/// Describes a generic event.
-///
-/// See the module-level docs for more information on the event loop manages each event.
-#[derive(Debug, PartialEq)]
-pub enum Event<'a, T: 'static> {
-    /// Emitted when new events arrive from the OS to be processed.
-    ///
-    /// This event type is useful as a place to put code that should be done before you start
-    /// processing events, such as updating frame timing information for benchmarking or checking
-    /// the [`StartCause`][crate::event::StartCause] to see if a timer set by
-    /// [`ControlFlow::WaitUntil`](crate::event_loop::ControlFlow::WaitUntil) has elapsed.
-    NewEvents(StartCause),
+pub mod device;
 
+/// A generic event.
+#[derive(Clone, Debug, PartialEq)]
+pub enum Event<T> {
     /// Emitted when the OS sends an event to a winit window.
     WindowEvent {
         window_id: WindowId,
-        event: WindowEvent<'a>,
+        event: WindowEvent,
     },
 
-    /// Emitted when the OS sends an event to a device.
-    DeviceEvent {
-        device_id: DeviceId,
-        event: DeviceEvent,
-    },
+    /// Emitted when a mouse device has generated input.
+    MouseEvent(device::MouseId, device::MouseEvent),
+    /// Emitted when a keyboard device has generated input.
+    KeyboardEvent(device::KeyboardId, device::KeyboardEvent),
+    HidEvent(device::HidId, device::HidEvent),
+    /// Emitted when a gamepad/joystick device has generated input.
+    GamepadEvent(device::GamepadHandle, device::GamepadEvent),
 
-    /// Emitted when an event is sent from [`EventLoopProxy::send_event`](crate::event_loop::EventLoopProxy::send_event)
+    /// Emitted when an event is sent from [`EventLoopProxy::send_event`](../event_loop/struct.EventLoopProxy.html#method.send_event)
     UserEvent(T),
+    /// Emitted when new events arrive from the OS to be processed.
+    NewEvents(StartCause),
+    /// Emitted when all of the event loop's events have been processed and control flow is about
+    /// to be taken away from the program.
+    EventsCleared,
+
+    /// Emitted when the event loop is being shut down. This is irreversable - if this event is
+    /// emitted, it is guaranteed to be the last event emitted.
+    LoopDestroyed,
 
     /// Emitted when the application has been suspended.
     Suspended,
 
     /// Emitted when the application has been resumed.
     Resumed,
-
-    /// Emitted when all of the event loop's input events have been processed and redraw processing
-    /// is about to begin.
-    ///
-    /// This event is useful as a place to put your code that should be run after all
-    /// state-changing events have been handled and you want to do stuff (updating state, performing
-    /// calculations, etc) that happens as the "main body" of your event loop. If your program draws
-    /// graphics, it's usually better to do it in response to
-    /// [`Event::RedrawRequested`](crate::event::Event::RedrawRequested), which gets emitted
-    /// immediately after this event.
-    MainEventsCleared,
-
-    /// Emitted after `MainEventsCleared` when a window should be redrawn.
-    ///
-    /// This gets triggered in two scenarios:
-    /// - The OS has performed an operation that's invalidated the window's contents (such as
-    ///   resizing the window).
-    /// - The application has explicitly requested a redraw via
-    ///   [`Window::request_redraw`](crate::window::Window::request_redraw).
-    ///
-    /// During each iteration of the event loop, Winit will aggregate duplicate redraw requests
-    /// into a single event, to help avoid duplicating rendering work.
-    RedrawRequested(WindowId),
-
-    /// Emitted after all `RedrawRequested` events have been processed and control flow is about to
-    /// be taken away from the program. If there are no `RedrawRequested` events, it is emitted
-    /// immediately after `MainEventsCleared`.
-    ///
-    /// This event is useful for doing any cleanup or bookkeeping work after all the rendering
-    /// tasks have been completed.
-    RedrawEventsCleared,
-
-    /// Emitted when the event loop is being shut down.
-    ///
-    /// This is irreversable - if this event is emitted, it is guaranteed to be the last event that
-    /// gets emitted. You generally want to treat this as an "do on quit" event.
-    LoopDestroyed,
 }
 
-impl<'a, T> Event<'a, T> {
-    pub fn map_nonuser_event<U>(self) -> Result<Event<'a, U>, Event<'a, T>> {
+impl<T> Event<T> {
+    pub fn map_nonuser_event<U>(self) -> Result<Event<U>, Event<T>> {
         use self::Event::*;
         match self {
             UserEvent(_) => Err(self),
             WindowEvent { window_id, event } => Ok(WindowEvent { window_id, event }),
-            DeviceEvent { device_id, event } => Ok(DeviceEvent { device_id, event }),
+            MouseEvent(id, event) => Ok(MouseEvent(id, event)),
+            KeyboardEvent(id, event) => Ok(KeyboardEvent(id, event)),
+            HidEvent(id, event) => Ok(HidEvent(id, event)),
+            GamepadEvent(id, event) => Ok(GamepadEvent(id, event)),
             NewEvents(cause) => Ok(NewEvents(cause)),
-            MainEventsCleared => Ok(MainEventsCleared),
-            RedrawRequested(wid) => Ok(RedrawRequested(wid)),
-            RedrawEventsCleared => Ok(RedrawEventsCleared),
+            EventsCleared => Ok(EventsCleared),
             LoopDestroyed => Ok(LoopDestroyed),
             Suspended => Ok(Suspended),
             Resumed => Ok(Resumed),
         }
     }
-
-    /// If the event doesn't contain a reference, turn it into an event with a `'static` lifetime.
-    /// Otherwise, return `None`.
-    pub fn to_static(self) -> Option<Event<'static, T>> {
-        use self::Event::*;
-        match self {
-            WindowEvent { window_id, event } => event
-                .to_static()
-                .map(|event| WindowEvent { window_id, event }),
-            UserEvent(_) => None,
-            DeviceEvent { device_id, event } => Some(DeviceEvent { device_id, event }),
-            NewEvents(cause) => Some(NewEvents(cause)),
-            MainEventsCleared => Some(MainEventsCleared),
-            RedrawRequested(wid) => Some(RedrawRequested(wid)),
-            RedrawEventsCleared => Some(RedrawEventsCleared),
-            LoopDestroyed => Some(LoopDestroyed),
-            Suspended => Some(Suspended),
-            Resumed => Some(Resumed),
-        }
-    }
 }
 
-/// Describes the reason the event loop is resuming.
+/// The reason the event loop is resuming.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum StartCause {
     /// Sent if the time specified by `ControlFlow::WaitUntil` has been reached. Contains the
@@ -178,14 +95,14 @@ pub enum StartCause {
     Init,
 }
 
-/// Describes an event from a `Window`.
-#[derive(Debug, PartialEq)]
-pub enum WindowEvent<'a> {
+/// An event from a `Window`.
+#[derive(Clone, Debug, PartialEq)]
+pub enum WindowEvent {
     /// The size of the window has changed. Contains the client area's new dimensions.
-    Resized(PhysicalSize<u32>),
+    Resized(LogicalSize),
 
     /// The position of the window has changed. Contains the window's new position.
-    Moved(PhysicalPosition<u32>),
+    Moved(LogicalPosition),
 
     /// The window has been requested to close.
     CloseRequested,
@@ -220,54 +137,34 @@ pub enum WindowEvent<'a> {
     Focused(bool),
 
     /// An event from the keyboard has been received.
-    KeyboardInput {
-        device_id: DeviceId,
-        input: KeyboardInput,
-        /// If `true`, the event was generated synthetically by winit
-        /// in one of the following circumstances:
-        ///
-        /// * Synthetic key press events are generated for all keys pressed
-        ///   when a window gains focus. Likewise, synthetic key release events
-        ///   are generated for all keys pressed when a window goes out of focus.
-        ///   ***Currently, this is only functional on X11 and Windows***
-        ///
-        /// Otherwise, this value is always `false`.
-        is_synthetic: bool,
-    },
+    KeyboardInput(KeyboardInput),
 
     /// The cursor has moved on the window.
     CursorMoved {
-        device_id: DeviceId,
-
         /// (x,y) coords in pixels relative to the top-left corner of the window. Because the range of this data is
         /// limited by the display area and it may have been transformed by the OS to implement effects such as cursor
         /// acceleration, it should not be used to implement non-cursor-like interactions such as 3D camera control.
-        position: PhysicalPosition<i32>,
-        #[deprecated = "Deprecated in favor of DeviceEvent::ModifiersChanged"]
+        position: LogicalPosition,
         modifiers: ModifiersState,
     },
 
     /// The cursor has entered the window.
-    CursorEntered { device_id: DeviceId },
+    CursorEntered,
 
     /// The cursor has left the window.
-    CursorLeft { device_id: DeviceId },
+    CursorLeft,
 
     /// A mouse wheel movement or touchpad scroll occurred.
     MouseWheel {
-        device_id: DeviceId,
         delta: MouseScrollDelta,
         phase: TouchPhase,
-        #[deprecated = "Deprecated in favor of DeviceEvent::ModifiersChanged"]
         modifiers: ModifiersState,
     },
 
     /// An mouse button press has been received.
     MouseInput {
-        device_id: DeviceId,
         state: ElementState,
         button: MouseButton,
-        #[deprecated = "Deprecated in favor of DeviceEvent::ModifiersChanged"]
         modifiers: ModifiersState,
     },
 
@@ -276,210 +173,27 @@ pub enum WindowEvent<'a> {
     /// At the moment, only supported on Apple forcetouch-capable macbooks.
     /// The parameters are: pressure level (value between 0 and 1 representing how hard the touchpad
     /// is being pressed) and stage (integer representing the click level).
-    TouchpadPressure {
-        device_id: DeviceId,
-        pressure: f32,
-        stage: i64,
-    },
+    TouchpadPressure { pressure: f32, stage: i64 },
 
-    /// Motion on some analog axis. May report data redundant to other, more specific events.
-    AxisMotion {
-        device_id: DeviceId,
-        axis: AxisId,
-        value: f64,
-    },
+    /// The OS or application has requested that the window be redrawn.
+    RedrawRequested,
 
     /// Touch event has been received
     Touch(Touch),
 
-    /// The window's scale factor has changed.
+    /// The DPI factor of the window has changed.
     ///
     /// The following user actions can cause DPI changes:
     ///
     /// * Changing the display's resolution.
-    /// * Changing the display's scale factor (e.g. in Control Panel on Windows).
-    /// * Moving the window to a display with a different scale factor.
-    ///
-    /// After this event callback has been processed, the window will be resized to whatever value
-    /// is pointed to by the `new_inner_size` reference. By default, this will contain the size suggested
-    /// by the OS, but it can be changed to any value.
+    /// * Changing the display's DPI factor (e.g. in Control Panel on Windows).
+    /// * Moving the window to a display with a different DPI factor.
     ///
     /// For more information about DPI in general, see the [`dpi`](crate::dpi) module.
-    ScaleFactorChanged {
-        scale_factor: f64,
-        new_inner_size: &'a mut PhysicalSize<u32>,
-    },
-
-    /// The system window theme has changed.
-    ///
-    /// Applications might wish to react to this to change the theme of the content of the window
-    /// when the system changes the window theme.
-    ///
-    /// At the moment this is only supported on Windows.
-    ThemeChanged(Theme),
+    HiDpiFactorChanged(f64),
 }
 
-impl<'a> WindowEvent<'a> {
-    pub fn to_static(self) -> Option<WindowEvent<'static>> {
-        use self::WindowEvent::*;
-        match self {
-            Resized(size) => Some(Resized(size)),
-            Moved(position) => Some(Moved(position)),
-            CloseRequested => Some(CloseRequested),
-            Destroyed => Some(Destroyed),
-            DroppedFile(file) => Some(DroppedFile(file)),
-            HoveredFile(file) => Some(HoveredFile(file)),
-            HoveredFileCancelled => Some(HoveredFileCancelled),
-            ReceivedCharacter(c) => Some(ReceivedCharacter(c)),
-            Focused(focused) => Some(Focused(focused)),
-            KeyboardInput {
-                device_id,
-                input,
-                is_synthetic,
-            } => Some(KeyboardInput {
-                device_id,
-                input,
-                is_synthetic,
-            }),
-            #[allow(deprecated)]
-            CursorMoved {
-                device_id,
-                position,
-                modifiers,
-            } => Some(CursorMoved {
-                device_id,
-                position,
-                modifiers,
-            }),
-            CursorEntered { device_id } => Some(CursorEntered { device_id }),
-            CursorLeft { device_id } => Some(CursorLeft { device_id }),
-            #[allow(deprecated)]
-            MouseWheel {
-                device_id,
-                delta,
-                phase,
-                modifiers,
-            } => Some(MouseWheel {
-                device_id,
-                delta,
-                phase,
-                modifiers,
-            }),
-            #[allow(deprecated)]
-            MouseInput {
-                device_id,
-                state,
-                button,
-                modifiers,
-            } => Some(MouseInput {
-                device_id,
-                state,
-                button,
-                modifiers,
-            }),
-            TouchpadPressure {
-                device_id,
-                pressure,
-                stage,
-            } => Some(TouchpadPressure {
-                device_id,
-                pressure,
-                stage,
-            }),
-            AxisMotion {
-                device_id,
-                axis,
-                value,
-            } => Some(AxisMotion {
-                device_id,
-                axis,
-                value,
-            }),
-            Touch(touch) => Some(Touch(touch)),
-            ThemeChanged(theme) => Some(ThemeChanged(theme)),
-            ScaleFactorChanged { .. } => None,
-        }
-    }
-}
-
-/// Identifier of an input device.
-///
-/// Whenever you receive an event arising from a particular input device, this event contains a `DeviceId` which
-/// identifies its origin. Note that devices may be virtual (representing an on-screen cursor and keyboard focus) or
-/// physical. Virtual devices typically aggregate inputs from multiple physical devices.
-#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub struct DeviceId(pub(crate) platform_impl::DeviceId);
-
-impl DeviceId {
-    /// Returns a dummy `DeviceId`, useful for unit testing. The only guarantee made about the return
-    /// value of this function is that it will always be equal to itself and to future values returned
-    /// by this function.  No other guarantees are made. This may be equal to a real `DeviceId`.
-    ///
-    /// **Passing this into a winit function will result in undefined behavior.**
-    pub unsafe fn dummy() -> Self {
-        DeviceId(platform_impl::DeviceId::dummy())
-    }
-}
-
-/// Represents raw hardware events that are not associated with any particular window.
-///
-/// Useful for interactions that diverge significantly from a conventional 2D GUI, such as 3D camera or first-person
-/// game controls. Many physical actions, such as mouse movement, can produce both device and window events. Because
-/// window events typically arise from virtual devices (corresponding to GUI cursors and keyboard focus) the device IDs
-/// may not match.
-///
-/// Note that these events are delivered regardless of input focus.
-#[derive(Clone, Debug, PartialEq)]
-pub enum DeviceEvent {
-    Added,
-    Removed,
-
-    /// Change in physical position of a pointing device.
-    ///
-    /// This represents raw, unfiltered physical motion. Not to be confused with `WindowEvent::CursorMoved`.
-    MouseMotion {
-        /// (x, y) change in position in unspecified units.
-        ///
-        /// Different devices may use different units.
-        delta: (f64, f64),
-    },
-
-    /// Physical scroll event
-    MouseWheel {
-        delta: MouseScrollDelta,
-    },
-
-    /// Motion on some analog axis.  This event will be reported for all arbitrary input devices
-    /// that winit supports on this platform, including mouse devices.  If the device is a mouse
-    /// device then this will be reported alongside the MouseMotion event.
-    Motion {
-        axis: AxisId,
-        value: f64,
-    },
-
-    Button {
-        button: ButtonId,
-        state: ElementState,
-    },
-
-    Key(KeyboardInput),
-
-    /// The keyboard modifiers have changed.
-    ///
-    /// This is tracked internally to avoid tracking errors arising from modifier key state changes when events from
-    /// this device are not being delivered to the application, e.g. due to keyboard focus being elsewhere.
-    ///
-    /// Platform-specific behavior:
-    /// - **Web**: This API is currently unimplemented on the web. This isn't by design - it's an
-    ///   issue, and it should get fixed - but it's the current state of the API.
-    ModifiersChanged(ModifiersState),
-
-    Text {
-        codepoint: char,
-    },
-}
-
-/// Describes a keyboard input event.
+/// A keyboard input event.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct KeyboardInput {
@@ -502,17 +216,19 @@ pub struct KeyboardInput {
     ///
     /// This is tracked internally to avoid tracking errors arising from modifier key state changes when events from
     /// this device are not being delivered to the application, e.g. due to keyboard focus being elsewhere.
-    #[deprecated = "Deprecated in favor of DeviceEvent::ModifiersChanged"]
     pub modifiers: ModifiersState,
 }
 
-/// Describes touch-screen input state.
+/// Touch input state.
 #[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum TouchPhase {
     Started,
     Moved,
     Ended,
+    /// The touch has been cancelled by the OS.
+    ///
+    /// This can occur in a variety of situations, such as the window losing focus.
     Cancelled,
 }
 
@@ -534,9 +250,8 @@ pub enum TouchPhase {
 /// device against their face.
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Touch {
-    pub device_id: DeviceId,
     pub phase: TouchPhase,
-    pub location: PhysicalPosition<f64>,
+    pub location: LogicalPosition,
     /// Describes how hard the screen was pressed. May be `None` if the platform
     /// does not support pressure sensitivity.
     ///
@@ -545,6 +260,8 @@ pub struct Touch {
     /// - Only available on **iOS** 9.0+ and **Windows** 8+.
     pub force: Option<Force>,
     /// Unique identifier of a finger.
+    ///
+    /// This may get reused by the system after the touch ends.
     pub id: u64,
 }
 
@@ -613,16 +330,16 @@ pub type AxisId = u32;
 /// Identifier for a specific button on some device.
 pub type ButtonId = u32;
 
-/// Describes the input state of a key.
-#[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
+/// The input state of a key or button.
+#[derive(Debug, Hash, PartialEq, Eq, Clone, Copy, PartialOrd, Ord)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum ElementState {
     Pressed,
     Released,
 }
 
-/// Describes a button of a mouse controller.
-#[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
+/// A button on a mouse.
+#[derive(Debug, Hash, PartialEq, Eq, Clone, Copy, PartialOrd, Ord)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum MouseButton {
     Left,
@@ -631,7 +348,7 @@ pub enum MouseButton {
     Other(u8),
 }
 
-/// Describes a difference in the mouse scroll wheel state.
+/// A difference in the mouse scroll wheel state.
 #[derive(Debug, Clone, Copy, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum MouseScrollDelta {
@@ -647,10 +364,10 @@ pub enum MouseScrollDelta {
     /// Scroll events are expressed as a PixelDelta if
     /// supported by the device (eg. a touchpad) and
     /// platform.
-    PixelDelta(LogicalPosition<f64>),
+    PixelDelta(LogicalPosition),
 }
 
-/// Symbolic name for a keyboard key.
+/// Symbolic name of a keyboard key.
 #[derive(Debug, Hash, Ord, PartialOrd, PartialEq, Eq, Clone, Copy)]
 #[repr(u32)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
@@ -849,99 +566,21 @@ pub enum VirtualKeyCode {
     Cut,
 }
 
-impl ModifiersState {
-    /// Returns `true` if the shift key is pressed.
-    pub fn shift(&self) -> bool {
-        self.intersects(Self::SHIFT)
-    }
-    /// Returns `true` if the control key is pressed.
-    pub fn ctrl(&self) -> bool {
-        self.intersects(Self::CTRL)
-    }
-    /// Returns `true` if the alt key is pressed.
-    pub fn alt(&self) -> bool {
-        self.intersects(Self::ALT)
-    }
-    /// Returns `true` if the logo key is pressed.
-    pub fn logo(&self) -> bool {
-        self.intersects(Self::LOGO)
-    }
-}
-
-bitflags! {
-    /// Represents the current state of the keyboard modifiers
+/// The current state of the keyboard modifiers
+///
+/// Each field of this struct represents a modifier and is `true` if this modifier is active.
+#[derive(Default, Debug, Hash, PartialEq, Eq, Clone, Copy)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
+pub struct ModifiersState {
+    /// The "shift" key
+    pub shift: bool,
+    /// The "control" key
+    pub ctrl: bool,
+    /// The "alt" key
+    pub alt: bool,
+    /// The "logo" key
     ///
-    /// Each flag represents a modifier and is set if this modifier is active.
-    #[derive(Default)]
-    pub struct ModifiersState: u32 {
-        // left and right modifiers are currently commented out, but we should be able to support
-        // them in a future release
-        /// The "shift" key.
-        const SHIFT = 0b100 << 0;
-        // const LSHIFT = 0b010 << 0;
-        // const RSHIFT = 0b001 << 0;
-        /// The "control" key.
-        const CTRL = 0b100 << 3;
-        // const LCTRL = 0b010 << 3;
-        // const RCTRL = 0b001 << 3;
-        /// The "alt" key.
-        const ALT = 0b100 << 6;
-        // const LALT = 0b010 << 6;
-        // const RALT = 0b001 << 6;
-        /// This is the "windows" key on PC and "command" key on Mac.
-        const LOGO = 0b100 << 9;
-        // const LLOGO = 0b010 << 9;
-        // const RLOGO = 0b001 << 9;
-    }
-}
-
-#[cfg(feature = "serde")]
-mod modifiers_serde {
-    use super::ModifiersState;
-    use serde::{Deserialize, Deserializer, Serialize, Serializer};
-
-    #[derive(Default, Serialize, Deserialize)]
-    #[serde(default)]
-    #[serde(rename = "ModifiersState")]
-    pub struct ModifiersStateSerialize {
-        pub shift: bool,
-        pub ctrl: bool,
-        pub alt: bool,
-        pub logo: bool,
-    }
-
-    impl Serialize for ModifiersState {
-        fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-        where
-            S: Serializer,
-        {
-            let s = ModifiersStateSerialize {
-                shift: self.shift(),
-                ctrl: self.ctrl(),
-                alt: self.alt(),
-                logo: self.logo(),
-            };
-            s.serialize(serializer)
-        }
-    }
-
-    impl<'de> Deserialize<'de> for ModifiersState {
-        fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-        where
-            D: Deserializer<'de>,
-        {
-            let ModifiersStateSerialize {
-                shift,
-                ctrl,
-                alt,
-                logo,
-            } = ModifiersStateSerialize::deserialize(deserializer)?;
-            let mut m = ModifiersState::empty();
-            m.set(ModifiersState::SHIFT, shift);
-            m.set(ModifiersState::CTRL, ctrl);
-            m.set(ModifiersState::ALT, alt);
-            m.set(ModifiersState::LOGO, logo);
-            Ok(m)
-        }
-    }
+    /// This is the "windows" key on PC and "command" key on Mac.
+    pub logo: bool,
 }

src/event/device.rs

@@ -0,0 +1,363 @@
+//! Raw hardware events that are not associated with any particular window.
+//!
+//! Useful for interactions that diverge significantly from a conventional 2D GUI, such as 3D camera or first-person
+//! game controls. Many physical actions, such as mouse movement, can produce both device and window events. Because
+//! window events typically arise from virtual devices (corresponding to GUI cursors and keyboard focus) the device IDs
+//! may not match.
+//!
+//! All attached devices are guaranteed to emit an `Added` event upon the initialization of the event loop.
+//!
+//! Note that device events are always delivered regardless of window focus.
+
+use crate::{
+    dpi::PhysicalPosition,
+    event::{AxisId, ButtonId, ElementState, KeyboardInput, MouseButton, ModifiersState},
+    event_loop::EventLoop,
+    platform_impl,
+};
+use std::{fmt, io};
+
+/// A hint suggesting the type of button that was pressed.
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub enum GamepadButton {
+    Start,
+    Select,
+
+    /// The north face button.
+    ///
+    /// * Nintendo: X
+    /// * Playstation: Triangle
+    /// * XBox: Y
+    North,
+    /// The south face button.
+    ///
+    /// * Nintendo: B
+    /// * Playstation: X
+    /// * XBox: A
+    South,
+    /// The east face button.
+    ///
+    /// * Nintendo: A
+    /// * Playstation: Circle
+    /// * XBox: B
+    East,
+    /// The west face button.
+    ///
+    /// * Nintendo: Y
+    /// * Playstation: Square
+    /// * XBox: X
+    West,
+
+    LeftStick,
+    RightStick,
+
+    LeftTrigger,
+    RightTrigger,
+
+    LeftShoulder,
+    RightShoulder,
+
+    DPadUp,
+    DPadDown,
+    DPadLeft,
+    DPadRight,
+}
+
+/// A hint suggesting the type of axis that moved.
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub enum GamepadAxis {
+    LeftStickX,
+    LeftStickY,
+
+    RightStickX,
+    RightStickY,
+
+    LeftTrigger,
+    RightTrigger,
+}
+
+/// A given joystick's side on the gamepad.
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub enum Side {
+    Left,
+    Right,
+}
+
+/// Raw mouse events.
+///
+/// See the module-level docs for more information.
+#[derive(Debug, Copy, Clone, PartialEq)]
+pub enum MouseEvent {
+    /// A mouse device has been added.
+    Added,
+    /// A mouse device has been removed.
+    Removed,
+    /// A mouse button has been pressed or released.
+    Button {
+        state: ElementState,
+        button: MouseButton,
+    },
+    /// Relative change in physical position of a pointing device.
+    ///
+    /// This represents raw, unfiltered physical motion, NOT the position of the mouse. Accordingly,
+    /// the values provided here are the change in position of the mouse since the previous
+    /// `MovedRelative` event.
+    MovedRelative(f64, f64),
+    /// Change in absolute position of a pointing device.
+    ///
+    /// The `PhysicalPosition` value is the new position of the cursor relative to the desktop. This
+    /// generally doesn't get output by standard mouse devices, but can get output from tablet devices.
+    MovedAbsolute(PhysicalPosition),
+    /// Change in rotation of mouse wheel.
+    Wheel(f64, f64),
+}
+
+/// Raw keyboard events.
+///
+/// See the module-level docs for more information.
+#[derive(Debug, Copy, Clone, PartialEq, Hash)]
+pub enum KeyboardEvent {
+    /// A keyboard device has been added.
+    Added,
+    /// A keyboard device has been removed.
+    Removed,
+    /// A key has been pressed or released.
+    Input(KeyboardInput),
+    ModifiersChanged(ModifiersState),
+}
+
+/// Raw HID event.
+///
+/// See the module-level docs for more information.
+#[derive(Debug, Clone, PartialEq, Hash)]
+pub enum HidEvent {
+    /// A Human Interface Device device has been added.
+    Added,
+    /// A Human Interface Device device has been removed.
+    Removed,
+    /// A raw data packet has been received from the Human Interface Device.
+    Data(Box<[u8]>),
+}
+
+/// Gamepad/joystick events.
+///
+/// These can be generated by any of a variety of game controllers, including (but not limited to)
+/// gamepads, joysicks, and HOTAS devices.
+#[derive(Debug, Copy, Clone, PartialEq, PartialOrd)]
+pub enum GamepadEvent {
+    /// A gamepad/joystick device has been added.
+    Added,
+    /// A gamepad/joystick device has been removed.
+    Removed,
+    /// An analog axis value on the gamepad/joystick has changed.
+    ///
+    /// Winit does NOT provide [deadzone filtering](https://www.quora.com/What-does-the-term-joystick-deadzone-mean),
+    /// and such filtering may have to be provided by API users for joystick axes.
+    Axis {
+        axis_id: AxisId,
+        /// A hint regarding the physical axis that moved.
+        ///
+        /// On traditional gamepads (such as an X360 controller) this can be assumed to have a
+        /// non-`None` value; however, other joystick devices with more varied layouts generally won't
+        /// provide a value here.
+        ///
+        /// TODO: DISCUSS CONTROLLER MAPPING ONCE WE FIGURE OUT WHAT WE'RE DOING THERE.
+        axis: Option<GamepadAxis>,
+        value: f64,
+        /// Whether or not this axis has also produced a [`GamepadEvent::Stick`] event.
+        stick: bool,
+    },
+    /// A two-axis joystick's value has changed.
+    ///
+    /// This is mainly provided to assist with deadzone calculation, as proper deadzones should be
+    /// calculated via the combined distance of each joystick axis from the center of the joystick,
+    /// rather than per-axis.
+    ///
+    /// Note that this is only guaranteed to be emitted for traditionally laid out gamepads. More
+    /// complex joysticks generally don't report specifics of their layout to the operating system,
+    /// preventing Winit from automatically aggregating their axis input into two-axis stick events.
+    Stick {
+        /// The X axis' ID.
+        x_id: AxisId,
+        /// The Y axis' ID.
+        y_id: AxisId,
+        x_value: f64,
+        y_value: f64,
+        /// Which joystick side produced this event.
+        side: Side,
+    },
+    Button {
+        button_id: ButtonId,
+        /// A hint regarding the location of the button.
+        ///
+        /// The caveats on the `Axis.hint` field also apply here.
+        button: Option<GamepadButton>,
+        state: ElementState,
+    },
+}
+
+/// Error reported if a rumble attempt unexpectedly failed.
+#[derive(Debug)]
+pub enum RumbleError {
+    /// The device is no longer connected.
+    DeviceNotConnected,
+    /// An unknown OS error has occured.
+    OsError(io::Error),
+}
+
+/// A typed identifier for a mouse device.
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct MouseId(pub(crate) platform_impl::MouseId);
+/// A typed identifier for a keyboard device.
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct KeyboardId(pub(crate) platform_impl::KeyboardId);
+/// A typed if for a Human Interface Device.
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct HidId(pub(crate) platform_impl::HidId);
+/// A handle to a gamepad/joystick device.
+#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct GamepadHandle(pub(crate) platform_impl::GamepadHandle);
+
+impl MouseId {
+    /// Returns a dummy `MouseId`, useful for unit testing. The only guarantee made about the return
+    /// value of this function is that it will always be equal to itself and to future values returned
+    /// by this function.  No other guarantees are made. This may be equal to a real `MouseId`.
+    ///
+    /// **Passing this into a winit function will result in undefined behavior.**
+    pub unsafe fn dummy() -> Self {
+        MouseId(platform_impl::MouseId::dummy())
+    }
+
+    /// Enumerate all attached mouse devices.
+    pub fn enumerate<T>(event_loop: &EventLoop<T>) -> impl '_ + Iterator<Item = Self> {
+        platform_impl::MouseId::enumerate(&event_loop.event_loop)
+    }
+
+    /// Check to see if this mouse device is still connected.
+    pub fn is_connected(&self) -> bool {
+        self.0.is_connected()
+    }
+}
+
+impl KeyboardId {
+    /// Returns a dummy `KeyboardId`, useful for unit testing. The only guarantee made about the return
+    /// value of this function is that it will always be equal to itself and to future values returned
+    /// by this function.  No other guarantees are made. This may be equal to a real `KeyboardId`.
+    ///
+    /// **Passing this into a winit function will result in undefined behavior.**
+    pub unsafe fn dummy() -> Self {
+        KeyboardId(platform_impl::KeyboardId::dummy())
+    }
+
+    /// Enumerate all attached keyboard devices.
+    pub fn enumerate<T>(event_loop: &EventLoop<T>) -> impl '_ + Iterator<Item = Self> {
+        platform_impl::KeyboardId::enumerate(&event_loop.event_loop)
+    }
+
+    /// Check to see if this keyboard device is still connected.
+    pub fn is_connected(&self) -> bool {
+        self.0.is_connected()
+    }
+}
+
+impl HidId {
+    /// Returns a dummy `HidId`, useful for unit testing. The only guarantee made about the return
+    /// value of this function is that it will always be equal to itself and to future values returned
+    /// by this function.  No other guarantees are made. This may be equal to a real `HidId`.
+    ///
+    /// **Passing this into a winit function will result in undefined behavior.**
+    pub unsafe fn dummy() -> Self {
+        HidId(platform_impl::HidId::dummy())
+    }
+
+    /// Enumerate all attached keyboard devices.
+    pub fn enumerate<T>(event_loop: &EventLoop<T>) -> impl '_ + Iterator<Item = Self> {
+        platform_impl::HidId::enumerate(&event_loop.event_loop)
+    }
+
+    /// Check to see if this keyboard device is still connected.
+    pub fn is_connected(&self) -> bool {
+        self.0.is_connected()
+    }
+}
+
+impl GamepadHandle {
+    /// Returns a dummy `GamepadHandle`, useful for unit testing. The only guarantee made about the return
+    /// value of this function is that it will always be equal to itself and to future values returned
+    /// by this function.  No other guarantees are made. This may be equal to a real `GamepadHandle`.
+    ///
+    /// **Passing this into a winit function will result in undefined behavior.**
+    pub unsafe fn dummy() -> Self {
+        GamepadHandle(platform_impl::GamepadHandle::dummy())
+    }
+
+    /// Enumerate all attached gamepad/joystick devices.
+    pub fn enumerate<T>(event_loop: &EventLoop<T>) -> impl '_ + Iterator<Item = Self> {
+        platform_impl::GamepadHandle::enumerate(&event_loop.event_loop)
+    }
+
+    /// Check to see if this gamepad/joystick device is still connected.
+    pub fn is_connected(&self) -> bool {
+        self.0.is_connected()
+    }
+
+    /// Attempts to set the rumble values for an attached controller. Input values are automatically
+    /// bound to a [`0.0`, `1.0`] range.
+    ///
+    /// Certain gamepads assign different usages to the left and right motors - for example, X360
+    /// controllers treat the left motor as a low-frequency rumble and the right motor as a
+    /// high-frequency rumble. However, this cannot necessarily be assumed for all gamepad devices.
+    ///
+    /// Note that, if the given gamepad does not support rumble, no error value gets thrown.
+    pub fn rumble(&self, left_speed: f64, right_speed: f64) -> Result<(), RumbleError> {
+        self.0.rumble(left_speed, right_speed)
+    }
+
+    /// Gets the port number assigned to the gamepad.
+    pub fn port(&self) -> Option<u8> {
+        self.0.port()
+    }
+
+    /// Gets the controller's battery level.
+    ///
+    /// If the controller doesn't report a battery level, this returns `None`.
+    pub fn battery_level(&self) -> Option<BatteryLevel> {
+        self.0.battery_level()
+    }
+}
+
+/// TODO: IS THIS THE RIGHT ABSTRACTION FOR ALL PLATFORMS?
+/// This is exposed in its current form because it's what Microsoft does for XInput, and that's my
+/// (@Osspial's) main point of reference. If you're implementing this on a different platform and
+/// that platform exposes battery level differently, please bring it up in the tracking issue!
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub enum BatteryLevel {
+    Empty,
+    Low,
+    Medium,
+    Full,
+}
+
+impl fmt::Debug for MouseId {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        self.0.fmt(f)
+    }
+}
+
+impl fmt::Debug for KeyboardId {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        self.0.fmt(f)
+    }
+}
+
+impl fmt::Debug for HidId {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        self.0.fmt(f)
+    }
+}
+
+impl fmt::Debug for GamepadHandle {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        self.0.fmt(f)
+    }
+}

src/event_loop.rs

@@ -59,7 +59,7 @@ impl<T> fmt::Debug for EventLoopWindowTarget<T> {
 
 /// Set by the user callback given to the `EventLoop::run` method.
 ///
-/// Indicates the desired behavior of the event loop after [`Event::RedrawEventsCleared`][events_cleared]
+/// Indicates the desired behavior of the event loop after [`Event::EventsCleared`][events_cleared]
 /// is emitted. Defaults to `Poll`.
 ///
 /// ## Persistency
@@ -68,7 +68,7 @@ impl<T> fmt::Debug for EventLoopWindowTarget<T> {
 /// are **not** persistent between multiple calls to `run_return` - issuing a new call will reset
 /// the control flow to `Poll`.
 ///
-/// [events_cleared]: crate::event::Event::RedrawEventsCleared
+/// [events_cleared]: crate::event::Event::EventsCleared
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 pub enum ControlFlow {
     /// When the current loop iteration finishes, immediately begin a new iteration regardless of
@@ -143,7 +143,7 @@ impl<T> EventLoop<T> {
     #[inline]
     pub fn run<F>(self, event_handler: F) -> !
     where
-        F: 'static + FnMut(Event<'_, T>, &EventLoopWindowTarget<T>, &mut ControlFlow),
+        F: 'static + FnMut(Event<T>, &EventLoopWindowTarget<T>, &mut ControlFlow),
     {
         self.event_loop.run(event_handler)
     }
@@ -199,7 +199,7 @@ impl<T: 'static> EventLoopProxy<T> {
     /// function.
     ///
     /// Returns an `Err` if the associated `EventLoop` no longer exists.
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
         self.event_loop_proxy.send_event(event)
     }
 }
@@ -211,17 +211,17 @@ impl<T: 'static> fmt::Debug for EventLoopProxy<T> {
 }
 
 /// The error that is returned when an `EventLoopProxy` attempts to wake up an `EventLoop` that
-/// no longer exists. Contains the original event given to `send_event`.
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
-pub struct EventLoopClosed<T>(pub T);
+/// no longer exists.
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub struct EventLoopClosed;
 
-impl<T: fmt::Debug> fmt::Display for EventLoopClosed<T> {
+impl fmt::Display for EventLoopClosed {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "{}", error::Error::description(self))
     }
 }
 
-impl<T: fmt::Debug> error::Error for EventLoopClosed<T> {
+impl error::Error for EventLoopClosed {
     fn description(&self) -> &str {
         "Tried to wake up a closed `EventLoop`"
     }

src/lib.rs

@@ -1,6 +1,6 @@
-//! Winit is a cross-platform window creation and event loop management library.
+//! Winit allows you to build a window on as many platforms as possible.
 //!
-//! # Building windows
+//! # Building a window
 //!
 //! Before you can build a [`Window`], you first need to build an [`EventLoop`]. This is done with the
 //! [`EventLoop::new()`] function.
@@ -15,31 +15,26 @@
 //!  - Calling [`Window::new(&event_loop)`][window_new].
 //!  - Calling [`let builder = WindowBuilder::new()`][window_builder_new] then [`builder.build(&event_loop)`][window_builder_build].
 //!
-//! The first method is the simplest, and will give you default values for everything. The second
-//! method allows you to customize the way your [`Window`] will look and behave by modifying the
-//! fields of the [`WindowBuilder`] object before you create the [`Window`].
+//! The first way is the simplest way and will give you default values for everything.
+//!
+//! The second way allows you to customize the way your [`Window`] will look and behave by modifying
+//! the fields of the [`WindowBuilder`] object before you create the [`Window`].
 //!
 //! # Event handling
 //!
 //! Once a [`Window`] has been created, it will generate different *events*. A [`Window`] object can
-//! generate [`WindowEvent`]s when certain input events occur, such as a cursor moving over the
-//! window or a key getting pressed while the window is focused. Devices can generate
-//! [`DeviceEvent`]s, which contain unfiltered event data that isn't specific to a certain window.
-//! Some user activity, like mouse movement, can generate both a [`WindowEvent`] *and* a
-//! [`DeviceEvent`]. You can also create and handle your own custom [`UserEvent`]s, if desired.
+//! generate a [`WindowEvent`] when certain things happen, like whenever the user moves their mouse
+//! or presses a key inside the [`Window`]. Devices can generate a [`DeviceEvent`] directly as well,
+//! which contains unfiltered event data that isn't specific to a certain window. Some user
+//! activity, like mouse movement, can generate both a [`WindowEvent`] *and* a [`DeviceEvent`]. You
+//! can also create and handle your own custom [`UserEvent`]s, if desired.
 //!
-//! You can retreive events by calling [`EventLoop::run`][event_loop_run]. This function will
-//! dispatch events for every [`Window`] that was created with that particular [`EventLoop`], and
-//! will run until the `control_flow` argument given to the closure is set to
-//! [`ControlFlow`]`::`[`Exit`], at which point [`Event`]`::`[`LoopDestroyed`] is emitted and the
-//! entire program terminates.
-//!
-//! Winit no longer uses a `EventLoop::poll_events() -> impl Iterator<Event>`-based event loop
-//! model, since that can't be implemented properly on web and mobile platforms and works poorly on
-//! most desktop platforms. However, this model can be re-implemented to an extent on desktops with
-//! [`EventLoopExtDesktop::run_return`]. See that method's documentation for more reasons about why
-//! it's discouraged, beyond mobile/web compatibility reasons.
+//! Events can be retreived by using an [`EventLoop`]. A [`Window`] will send its events to the
+//! [`EventLoop`] object it was created with.
 //!
+//! You do this by calling [`event_loop.run(...)`][event_loop_run]. This function will run forever
+//! unless `control_flow` is set to [`ControlFlow`]`::`[`Exit`], at which point [`Event`]`::`[`LoopDestroyed`]
+//! is emitted and the entire program terminates.
 //!
 //! ```no_run
 //! use winit::{
@@ -52,16 +47,23 @@
 //! let window = WindowBuilder::new().build(&event_loop).unwrap();
 //!
 //! event_loop.run(move |event, _, control_flow| {
-//!     // ControlFlow::Poll continuously runs the event loop, even if the OS hasn't
-//!     // dispatched any events. This is ideal for games and similar applications.
-//!     *control_flow = ControlFlow::Poll;
-//!
-//!     // ControlFlow::Wait pauses the event loop if no events are available to process.
-//!     // This is ideal for non-game applications that only update in response to user
-//!     // input, and uses significantly less power/CPU time than ControlFlow::Poll.
-//!     *control_flow = ControlFlow::Wait;
-//!
 //!     match event {
+//!         Event::EventsCleared => {
+//!             // Application update code.
+//!
+//!             // Queue a RedrawRequested event.
+//!             window.request_redraw();
+//!         },
+//!         Event::WindowEvent {
+//!             event: WindowEvent::RedrawRequested,
+//!             ..
+//!         } => {
+//!             // Redraw the application.
+//!             //
+//!             // It's preferrable to render in this event rather than in EventsCleared, since
+//!             // rendering in here allows the program to gracefully handle redraws requested
+//!             // by the OS.
+//!         },
 //!         Event::WindowEvent {
 //!             event: WindowEvent::CloseRequested,
 //!             ..
@@ -69,42 +71,33 @@
 //!             println!("The close button was pressed; stopping");
 //!             *control_flow = ControlFlow::Exit
 //!         },
-//!         Event::MainEventsCleared => {
-//!             // Application update code.
-//!
-//!             // Queue a RedrawRequested event.
-//!             window.request_redraw();
-//!         },
-//!         Event::RedrawRequested(_) => {
-//!             // Redraw the application.
-//!             //
-//!             // It's preferrable to render in this event rather than in MainEventsCleared, since
-//!             // rendering in here allows the program to gracefully handle redraws requested
-//!             // by the OS.
-//!         },
-//!         _ => ()
+//!         // ControlFlow::Poll continuously runs the event loop, even if the OS hasn't
+//!         // dispatched any events. This is ideal for games and similar applications.
+//!         _ => *control_flow = ControlFlow::Poll,
+//!         // ControlFlow::Wait pauses the event loop if no events are available to process.
+//!         // This is ideal for non-game applications that only update in response to user
+//!         // input, and uses significantly less power/CPU time than ControlFlow::Poll.
+//!         // _ => *control_flow = ControlFlow::Wait,
 //!     }
 //! });
 //! ```
 //!
-//! [`Event`]`::`[`WindowEvent`] has a [`WindowId`] member. In multi-window environments, it should be
-//! compared to the value returned by [`Window::id()`][window_id_fn] to determine which [`Window`]
-//! dispatched the event.
+//! If you use multiple [`Window`]s, [`Event`]`::`[`WindowEvent`] has a member named `window_id`. You can
+//! compare it with the value returned by the [`id()`][window_id_fn] method of [`Window`] in order to know which
+//! [`Window`] has received the event.
 //!
 //! # Drawing on the window
 //!
-//! Winit doesn't directly provide any methods for drawing on a [`Window`]. However it allows you to
+//! Winit doesn't provide any function that allows drawing on a [`Window`]. However it allows you to
 //! retrieve the raw handle of the window (see the [`platform`] module), which in turn allows you
-//! to create an OpenGL/Vulkan/DirectX/Metal/etc. context that can be used to render graphics.
+//! to create an OpenGL/Vulkan/DirectX/Metal/etc. context that will draw on the [`Window`].
 //!
 //! [`EventLoop`]: event_loop::EventLoop
-//! [`EventLoopExtDesktop::run_return`]: ./platform/desktop/trait.EventLoopExtDesktop.html#tymethod.run_return
 //! [`EventLoop::new()`]: event_loop::EventLoop::new
 //! [event_loop_run]: event_loop::EventLoop::run
 //! [`ControlFlow`]: event_loop::ControlFlow
 //! [`Exit`]: event_loop::ControlFlow::Exit
 //! [`Window`]: window::Window
-//! [`WindowId`]: window::WindowId
 //! [`WindowBuilder`]: window::WindowBuilder
 //! [window_new]: window::Window::new
 //! [window_builder_new]: window::WindowBuilder::new
@@ -129,6 +122,7 @@ extern crate log;
 #[macro_use]
 extern crate serde;
 #[macro_use]
+#[cfg(any(target_os = "ios", target_os = "windows"))]
 extern crate bitflags;
 #[cfg(any(target_os = "macos", target_os = "ios"))]
 #[macro_use]
@@ -144,6 +138,7 @@ pub mod event_loop;
 mod icon;
 pub mod monitor;
 mod platform_impl;
+mod util;
 pub mod window;
 
 pub mod platform;

src/monitor.rs

@@ -58,7 +58,7 @@ impl Ord for VideoMode {
 impl VideoMode {
     /// Returns the resolution of this video mode.
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.video_mode.size()
     }
 
@@ -133,7 +133,7 @@ impl MonitorHandle {
     ///
     /// - **Web:** Always returns (0,0)
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.inner.size()
     }
 
@@ -144,22 +144,22 @@ impl MonitorHandle {
     ///
     /// - **Web:** Always returns (0,0)
     #[inline]
-    pub fn position(&self) -> PhysicalPosition<i32> {
+    pub fn position(&self) -> PhysicalPosition {
         self.inner.position()
     }
 
-    /// Returns the scale factor that can be used to map logical pixels to physical pixels, and vice versa.
+    /// Returns the DPI factor that can be used to map logical pixels to physical pixels, and vice versa.
     ///
     /// See the [`dpi`](crate::dpi) module for more information.
     ///
     /// ## Platform-specific
     ///
-    /// - **X11:** Can be overridden using the `WINIT_X11_SCALE_FACTOR` environment variable.
+    /// - **X11:** Can be overridden using the `WINIT_HIDPI_FACTOR` environment variable.
     /// - **Android:** Always returns 1.0.
     /// - **Web:** Always returns 1.0
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
-        self.inner.scale_factor()
+    pub fn hidpi_factor(&self) -> f64 {
+        self.inner.hidpi_factor()
     }
 
     /// Returns all fullscreen video modes supported by this monitor.

src/platform/desktop.rs

@@ -30,11 +30,7 @@ pub trait EventLoopExtDesktop {
     /// You are strongly encouraged to use `run`, unless the use of this is absolutely necessary.
     fn run_return<F>(&mut self, event_handler: F)
     where
-        F: FnMut(
-            Event<'_, Self::UserEvent>,
-            &EventLoopWindowTarget<Self::UserEvent>,
-            &mut ControlFlow,
-        );
+        F: FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget<Self::UserEvent>, &mut ControlFlow);
 }
 
 impl<T> EventLoopExtDesktop for EventLoop<T> {
@@ -42,11 +38,7 @@ impl<T> EventLoopExtDesktop for EventLoop<T> {
 
     fn run_return<F>(&mut self, event_handler: F)
     where
-        F: FnMut(
-            Event<'_, Self::UserEvent>,
-            &EventLoopWindowTarget<Self::UserEvent>,
-            &mut ControlFlow,
-        ),
+        F: FnMut(Event<T>, &EventLoopWindowTarget<T>, &mut ControlFlow),
     {
         self.event_loop.run_return(event_handler)
     }

src/platform/ios.rs

@@ -43,14 +43,14 @@ pub trait WindowExtIOS {
     /// [`UIView`]: https://developer.apple.com/documentation/uikit/uiview?language=objc
     fn ui_view(&self) -> *mut c_void;
 
-    /// Sets the [`contentScaleFactor`] of the underlying [`UIWindow`] to `scale_factor`.
+    /// Sets the [`contentScaleFactor`] of the underlying [`UIWindow`] to `hidpi_factor`.
     ///
     /// The default value is device dependent, and it's recommended GLES or Metal applications set
-    /// this to [`MonitorHandle::scale_factor()`].
+    /// this to [`MonitorHandle::hidpi_factor()`].
     ///
     /// [`UIWindow`]: https://developer.apple.com/documentation/uikit/uiwindow?language=objc
     /// [`contentScaleFactor`]: https://developer.apple.com/documentation/uikit/uiview/1622657-contentscalefactor?language=objc
-    fn set_scale_factor(&self, scale_factor: f64);
+    fn set_hidpi_factor(&self, hidpi_factor: f64);
 
     /// Sets the valid orientations for the [`Window`].
     ///
@@ -113,8 +113,8 @@ impl WindowExtIOS for Window {
     }
 
     #[inline]
-    fn set_scale_factor(&self, scale_factor: f64) {
-        self.window.set_scale_factor(scale_factor)
+    fn set_hidpi_factor(&self, hidpi_factor: f64) {
+        self.window.set_hidpi_factor(hidpi_factor)
     }
 
     #[inline]
@@ -148,14 +148,14 @@ pub trait WindowBuilderExtIOS {
     /// [`UIView`]: https://developer.apple.com/documentation/uikit/uiview?language=objc
     fn with_root_view_class(self, root_view_class: *const c_void) -> WindowBuilder;
 
-    /// Sets the [`contentScaleFactor`] of the underlying [`UIWindow`] to `scale_factor`.
+    /// Sets the [`contentScaleFactor`] of the underlying [`UIWindow`] to `hidpi_factor`.
     ///
     /// The default value is device dependent, and it's recommended GLES or Metal applications set
-    /// this to [`MonitorHandle::scale_factor()`].
+    /// this to [`MonitorHandle::hidpi_factor()`].
     ///
     /// [`UIWindow`]: https://developer.apple.com/documentation/uikit/uiwindow?language=objc
     /// [`contentScaleFactor`]: https://developer.apple.com/documentation/uikit/uiview/1622657-contentscalefactor?language=objc
-    fn with_scale_factor(self, scale_factor: f64) -> WindowBuilder;
+    fn with_hidpi_factor(self, hidpi_factor: f64) -> WindowBuilder;
 
     /// Sets the valid orientations for the [`Window`].
     ///
@@ -204,8 +204,8 @@ impl WindowBuilderExtIOS for WindowBuilder {
     }
 
     #[inline]
-    fn with_scale_factor(mut self, scale_factor: f64) -> WindowBuilder {
-        self.platform_specific.scale_factor = Some(scale_factor);
+    fn with_hidpi_factor(mut self, hidpi_factor: f64) -> WindowBuilder {
+        self.platform_specific.hidpi_factor = Some(hidpi_factor);
         self
     }
 

src/platform/macos.rs

@@ -128,7 +128,7 @@ pub trait WindowBuilderExtMacOS {
     /// Makes the window content appear behind the titlebar.
     fn with_fullsize_content_view(self, fullsize_content_view: bool) -> WindowBuilder;
     /// Build window with `resizeIncrements` property. Values must not be 0.
-    fn with_resize_increments(self, increments: LogicalSize<f64>) -> WindowBuilder;
+    fn with_resize_increments(self, increments: LogicalSize) -> WindowBuilder;
     fn with_disallow_hidpi(self, disallow_hidpi: bool) -> WindowBuilder;
 }
 
@@ -179,7 +179,7 @@ impl WindowBuilderExtMacOS for WindowBuilder {
     }
 
     #[inline]
-    fn with_resize_increments(mut self, increments: LogicalSize<f64>) -> WindowBuilder {
+    fn with_resize_increments(mut self, increments: LogicalSize) -> WindowBuilder {
         self.platform_specific.resize_increments = Some(increments.into());
         self
     }

src/platform/unix.rs

@@ -5,7 +5,7 @@ use std::{os::raw, ptr, sync::Arc};
 use smithay_client_toolkit::window::{ButtonState, Theme};
 
 use crate::{
-    dpi::Size,
+    dpi::LogicalSize,
     event_loop::{EventLoop, EventLoopWindowTarget},
     monitor::MonitorHandle,
     window::{Window, WindowBuilder},
@@ -380,9 +380,9 @@ pub trait WindowBuilderExtUnix {
     /// Build window with `_GTK_THEME_VARIANT` hint set to the specified value. Currently only relevant on X11.
     fn with_gtk_theme_variant(self, variant: String) -> Self;
     /// Build window with resize increment hint. Only implemented on X11.
-    fn with_resize_increments<S: Into<Size>>(self, increments: S) -> Self;
+    fn with_resize_increments(self, increments: LogicalSize) -> Self;
     /// Build window with base size hint. Only implemented on X11.
-    fn with_base_size<S: Into<Size>>(self, base_size: S) -> Self;
+    fn with_base_size(self, base_size: LogicalSize) -> Self;
 
     /// Build window with a given application ID. It should match the `.desktop` file distributed with
     /// your program. Only relevant on Wayland.
@@ -431,13 +431,13 @@ impl WindowBuilderExtUnix for WindowBuilder {
     }
 
     #[inline]
-    fn with_resize_increments<S: Into<Size>>(mut self, increments: S) -> Self {
+    fn with_resize_increments(mut self, increments: LogicalSize) -> Self {
         self.platform_specific.resize_increments = Some(increments.into());
         self
     }
 
     #[inline]
-    fn with_base_size<S: Into<Size>>(mut self, base_size: S) -> Self {
+    fn with_base_size(mut self, base_size: LogicalSize) -> Self {
         self.platform_specific.base_size = Some(base_size.into());
         self
     }

src/platform/windows.rs

@@ -6,7 +6,7 @@ use libc;
 use winapi::shared::windef::HWND;
 
 use crate::{
-    event::DeviceId,
+    event::device::{GamepadHandle, KeyboardId, MouseId},
     event_loop::EventLoop,
     monitor::MonitorHandle,
     platform_impl::EventLoop as WindowsEventLoop,
@@ -77,9 +77,6 @@ pub trait WindowExtWindows {
 
     /// This sets `ICON_BIG`. A good ceiling here is 256x256.
     fn set_taskbar_icon(&self, taskbar_icon: Option<Icon>);
-
-    /// Whether the system theme is currently Windows 10's "Dark Mode".
-    fn is_dark_mode(&self) -> bool;
 }
 
 impl WindowExtWindows for Window {
@@ -97,11 +94,6 @@ impl WindowExtWindows for Window {
     fn set_taskbar_icon(&self, taskbar_icon: Option<Icon>) {
         self.window.set_taskbar_icon(taskbar_icon)
     }
-
-    #[inline]
-    fn is_dark_mode(&self) -> bool {
-        self.window.is_dark_mode()
-    }
 }
 
 /// Additional methods on `WindowBuilder` that are specific to Windows.
@@ -157,17 +149,49 @@ impl MonitorHandleExtWindows for MonitorHandle {
     }
 }
 
-/// Additional methods on `DeviceId` that are specific to Windows.
-pub trait DeviceIdExtWindows {
+/// Additional methods on device types that are specific to Windows.
+pub trait DeviceExtWindows {
     /// Returns an identifier that persistently refers to this specific device.
     ///
     /// Will return `None` if the device is no longer available.
     fn persistent_identifier(&self) -> Option<String>;
+
+    /// Returns the handle of the device - `HANDLE`.
+    fn handle(&self) -> *mut c_void;
 }
 
-impl DeviceIdExtWindows for DeviceId {
+impl DeviceExtWindows for MouseId {
     #[inline]
     fn persistent_identifier(&self) -> Option<String> {
         self.0.persistent_identifier()
     }
+
+    #[inline]
+    fn handle(&self) -> *mut c_void {
+        self.0.handle() as _
+    }
+}
+
+impl DeviceExtWindows for KeyboardId {
+    #[inline]
+    fn persistent_identifier(&self) -> Option<String> {
+        self.0.persistent_identifier()
+    }
+
+    #[inline]
+    fn handle(&self) -> *mut c_void {
+        self.0.handle() as _
+    }
+}
+
+impl DeviceExtWindows for GamepadHandle {
+    #[inline]
+    fn persistent_identifier(&self) -> Option<String> {
+        self.0.persistent_identifier()
+    }
+
+    #[inline]
+    fn handle(&self) -> *mut c_void {
+        self.0.handle() as _
+    }
 }

src/platform_impl/android/mod.rs

@@ -61,7 +61,7 @@ impl EventLoop {
         while let Ok(event) = self.event_rx.try_recv() {
             let e = match event {
                 android_glue::Event::EventMotion(motion) => {
-                    let dpi_factor = MonitorHandle.scale_factor();
+                    let dpi_factor = MonitorHandle.hidpi_factor();
                     let location = LogicalPosition::from_physical(
                         (motion.x as f64, motion.y as f64),
                         dpi_factor,
@@ -102,7 +102,7 @@ impl EventLoop {
                     if native_window.is_null() {
                         None
                     } else {
-                        let dpi_factor = MonitorHandle.scale_factor();
+                        let dpi_factor = MonitorHandle.hidpi_factor();
                         let physical_size = MonitorHandle.size();
                         let size = LogicalSize::from_physical(physical_size, dpi_factor);
                         Some(Event::WindowEvent {
@@ -157,7 +157,7 @@ impl EventLoop {
 }
 
 impl EventLoopProxy {
-    pub fn wakeup(&self) -> Result<(), ::EventLoopClosed<()>> {
+    pub fn wakeup(&self) -> Result<(), ::EventLoopClosed> {
         android_glue::wake_event_loop();
         Ok(())
     }
@@ -193,16 +193,16 @@ impl fmt::Debug for MonitorHandle {
         #[derive(Debug)]
         struct MonitorHandle {
             name: Option<String>,
-            dimensions: PhysicalSize<u32>,
-            position: PhysicalPosition<i32>,
-            scale_factor: f64,
+            dimensions: PhysicalSize,
+            position: PhysicalPosition,
+            hidpi_factor: f64,
         }
 
         let monitor_id_proxy = MonitorHandle {
             name: self.name(),
             dimensions: self.size(),
             position: self.outer_position(),
-            scale_factor: self.scale_factor(),
+            hidpi_factor: self.hidpi_factor(),
         };
 
         monitor_id_proxy.fmt(f)
@@ -216,7 +216,7 @@ impl MonitorHandle {
     }
 
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         unsafe {
             let window = android_glue::native_window();
             (
@@ -228,13 +228,13 @@ impl MonitorHandle {
     }
 
     #[inline]
-    pub fn outer_position(&self) -> PhysicalPosition<i32> {
+    pub fn outer_position(&self) -> PhysicalPosition {
         // Android assumes single screen
         (0, 0).into()
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         1.0
     }
 }
@@ -283,29 +283,29 @@ impl Window {
     }
 
     #[inline]
-    pub fn outer_position(&self) -> Option<LogicalPosition<f64>> {
+    pub fn outer_position(&self) -> Option<LogicalPosition> {
         // N/A
         None
     }
 
     #[inline]
-    pub fn inner_position(&self) -> Option<LogicalPosition<f64>> {
+    pub fn inner_position(&self) -> Option<LogicalPosition> {
         // N/A
         None
     }
 
     #[inline]
-    pub fn set_outer_position(&self, _position: LogicalPosition<f64>) {
+    pub fn set_outer_position(&self, _position: LogicalPosition) {
         // N/A
     }
 
     #[inline]
-    pub fn set_min_inner_size(&self, _dimensions: Option<LogicalSize<f64>>) {
+    pub fn set_min_inner_size(&self, _dimensions: Option<LogicalSize>) {
         // N/A
     }
 
     #[inline]
-    pub fn set_max_inner_size(&self, _dimensions: Option<LogicalSize<f64>>) {
+    pub fn set_max_inner_size(&self, _dimensions: Option<LogicalSize>) {
         // N/A
     }
 
@@ -315,29 +315,29 @@ impl Window {
     }
 
     #[inline]
-    pub fn inner_size(&self) -> Option<LogicalSize<f64>> {
+    pub fn inner_size(&self) -> Option<LogicalSize> {
         if self.native_window.is_null() {
             None
         } else {
-            let dpi_factor = self.scale_factor();
+            let dpi_factor = self.hidpi_factor();
             let physical_size = self.current_monitor().size();
             Some(LogicalSize::from_physical(physical_size, dpi_factor))
         }
     }
 
     #[inline]
-    pub fn outer_size(&self) -> Option<LogicalSize<f64>> {
+    pub fn outer_size(&self) -> Option<LogicalSize> {
         self.inner_size()
     }
 
     #[inline]
-    pub fn set_inner_size(&self, _size: LogicalSize<f64>) {
+    pub fn set_inner_size(&self, _size: LogicalSize) {
         // N/A
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
-        self.current_monitor().scale_factor()
+    pub fn hidpi_factor(&self) -> f64 {
+        self.current_monitor().hidpi_factor()
     }
 
     #[inline]
@@ -356,18 +356,10 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_cursor_position(
-        &self,
-        _position: LogicalPosition<f64>,
-    ) -> Result<(), ExternalError> {
+    pub fn set_cursor_position(&self, _position: LogicalPosition) -> Result<(), ExternalError> {
         Err(ExternalError::NotSupported(NotSupportedError::new()))
     }
 
-    #[inline]
-    pub fn set_minimized(&self, _minimized: bool) {
-        unimplemented!()
-    }
-
     #[inline]
     pub fn set_maximized(&self, _maximized: bool) {
         // N/A
@@ -403,7 +395,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_ime_position(&self, _spot: LogicalPosition<f64>) {
+    pub fn set_ime_position(&self, _spot: LogicalPosition) {
         // N/A
     }
 

src/platform_impl/ios/app_state.rs

@@ -12,16 +12,15 @@ use std::{
 use objc::runtime::{BOOL, YES};
 
 use crate::{
-    dpi::LogicalSize,
     event::{Event, StartCause, WindowEvent},
     event_loop::ControlFlow,
     platform_impl::platform::{
-        event_loop::{EventHandler, EventProxy, EventWrapper, Never},
+        event_loop::{EventHandler, Never},
         ffi::{
             id, kCFRunLoopCommonModes, CFAbsoluteTimeGetCurrent, CFRelease, CFRunLoopAddTimer,
             CFRunLoopGetMain, CFRunLoopRef, CFRunLoopTimerCreate, CFRunLoopTimerInvalidate,
-            CFRunLoopTimerRef, CFRunLoopTimerSetNextFireDate, CGRect, CGSize, NSInteger,
-            NSOperatingSystemVersion, NSUInteger,
+            CFRunLoopTimerRef, CFRunLoopTimerSetNextFireDate, NSInteger, NSOperatingSystemVersion,
+            NSUInteger,
         },
     },
     window::WindowId as RootWindowId,
@@ -46,13 +45,17 @@ enum UserCallbackTransitionResult<'a> {
         processing_redraws: bool,
     },
     ReentrancyPrevented {
-        queued_events: &'a mut Vec<EventWrapper>,
+        queued_events: &'a mut Vec<Event<Never>>,
     },
 }
 
-impl Event<'static, Never> {
+impl Event<Never> {
     fn is_redraw(&self) -> bool {
-        if let Event::RedrawRequested(_) = self {
+        if let Event::WindowEvent {
+            window_id: _,
+            event: WindowEvent::RedrawRequested,
+        } = self
+        {
             true
         } else {
             false
@@ -66,12 +69,12 @@ impl Event<'static, Never> {
 enum AppStateImpl {
     NotLaunched {
         queued_windows: Vec<id>,
-        queued_events: Vec<EventWrapper>,
+        queued_events: Vec<Event<Never>>,
         queued_gpu_redraws: HashSet<id>,
     },
     Launching {
         queued_windows: Vec<id>,
-        queued_events: Vec<EventWrapper>,
+        queued_events: Vec<Event<Never>>,
         queued_event_handler: Box<dyn EventHandler>,
         queued_gpu_redraws: HashSet<id>,
     },
@@ -82,7 +85,7 @@ enum AppStateImpl {
     },
     // special state to deal with reentrancy and prevent mutable aliasing.
     InUserCallback {
-        queued_events: Vec<EventWrapper>,
+        queued_events: Vec<Event<Never>>,
         queued_gpu_redraws: HashSet<id>,
     },
     ProcessingRedraws {
@@ -223,7 +226,7 @@ impl AppState {
         });
     }
 
-    fn did_finish_launching_transition(&mut self) -> (Vec<id>, Vec<EventWrapper>) {
+    fn did_finish_launching_transition(&mut self) -> (Vec<id>, Vec<Event<Never>>) {
         let (windows, events, event_handler, queued_gpu_redraws) = match self.take_state() {
             AppStateImpl::Launching {
                 queued_windows,
@@ -246,7 +249,7 @@ impl AppState {
         (windows, events)
     }
 
-    fn wakeup_transition(&mut self) -> Option<EventWrapper> {
+    fn wakeup_transition(&mut self) -> Option<Event<Never>> {
         // before `AppState::did_finish_launching` is called, pretend there is no running
         // event loop.
         if !self.has_launched() {
@@ -259,10 +262,7 @@ impl AppState {
                 AppStateImpl::PollFinished {
                     waiting_event_handler,
                 },
-            ) => (
-                waiting_event_handler,
-                EventWrapper::StaticEvent(Event::NewEvents(StartCause::Poll)),
-            ),
+            ) => (waiting_event_handler, Event::NewEvents(StartCause::Poll)),
             (
                 ControlFlow::Wait,
                 AppStateImpl::Waiting {
@@ -271,10 +271,10 @@ impl AppState {
                 },
             ) => (
                 waiting_event_handler,
-                EventWrapper::StaticEvent(Event::NewEvents(StartCause::WaitCancelled {
+                Event::NewEvents(StartCause::WaitCancelled {
                     start,
                     requested_resume: None,
-                })),
+                }),
             ),
             (
                 ControlFlow::WaitUntil(requested_resume),
@@ -284,15 +284,15 @@ impl AppState {
                 },
             ) => {
                 let event = if Instant::now() >= requested_resume {
-                    EventWrapper::StaticEvent(Event::NewEvents(StartCause::ResumeTimeReached {
+                    Event::NewEvents(StartCause::ResumeTimeReached {
                         start,
                         requested_resume,
-                    }))
+                    })
                 } else {
-                    EventWrapper::StaticEvent(Event::NewEvents(StartCause::WaitCancelled {
+                    Event::NewEvents(StartCause::WaitCancelled {
                         start,
                         requested_resume: Some(requested_resume),
-                    }))
+                    })
                 };
                 (waiting_event_handler, event)
             }
@@ -591,10 +591,7 @@ pub unsafe fn did_finish_launching() {
 
     let (windows, events) = AppState::get_mut().did_finish_launching_transition();
 
-    let events = std::iter::once(EventWrapper::StaticEvent(Event::NewEvents(
-        StartCause::Init,
-    )))
-    .chain(events);
+    let events = std::iter::once(Event::NewEvents(StartCause::Init)).chain(events);
     handle_nonuser_events(events);
 
     // the above window dance hack, could possibly trigger new windows to be created.
@@ -623,12 +620,12 @@ pub unsafe fn handle_wakeup_transition() {
 }
 
 // requires main thread
-pub unsafe fn handle_nonuser_event(event: EventWrapper) {
+pub unsafe fn handle_nonuser_event(event: Event<Never>) {
     handle_nonuser_events(std::iter::once(event))
 }
 
 // requires main thread
-pub unsafe fn handle_nonuser_events<I: IntoIterator<Item = EventWrapper>>(events: I) {
+pub unsafe fn handle_nonuser_events<I: IntoIterator<Item = Event<Never>>>(events: I) {
     let mut this = AppState::get_mut();
     let (mut event_handler, active_control_flow, processing_redraws) =
         match this.try_user_callback_transition() {
@@ -645,23 +642,16 @@ pub unsafe fn handle_nonuser_events<I: IntoIterator<Item = EventWrapper>>(events
     let mut control_flow = this.control_flow;
     drop(this);
 
-    for wrapper in events {
-        match wrapper {
-            EventWrapper::StaticEvent(event) => {
-                if !processing_redraws && event.is_redraw() {
-                    log::info!("processing `RedrawRequested` during the main event loop");
-                } else if processing_redraws && !event.is_redraw() {
-                    log::warn!(
-                        "processing non `RedrawRequested` event after the main event loop: {:#?}",
-                        event
-                    );
-                }
-                event_handler.handle_nonuser_event(event, &mut control_flow)
-            }
-            EventWrapper::EventProxy(proxy) => {
-                handle_event_proxy(&mut event_handler, control_flow, proxy)
-            }
+    for event in events {
+        if !processing_redraws && event.is_redraw() {
+            log::info!("processing `RedrawRequested` during the main event loop");
+        } else if processing_redraws && !event.is_redraw() {
+            log::warn!(
+                "processing non `RedrawRequested` event after the main event loop: {:#?}",
+                event
+            );
         }
+        event_handler.handle_nonuser_event(event, &mut control_flow)
     }
 
     loop {
@@ -702,23 +692,16 @@ pub unsafe fn handle_nonuser_events<I: IntoIterator<Item = EventWrapper>>(events
         }
         drop(this);
 
-        for wrapper in queued_events {
-            match wrapper {
-                EventWrapper::StaticEvent(event) => {
-                    if !processing_redraws && event.is_redraw() {
-                        log::info!("processing `RedrawRequested` during the main event loop");
-                    } else if processing_redraws && !event.is_redraw() {
-                        log::warn!(
-                            "processing non-`RedrawRequested` event after the main event loop: {:#?}",
-                            event
-                        );
-                    }
-                    event_handler.handle_nonuser_event(event, &mut control_flow)
-                }
-                EventWrapper::EventProxy(proxy) => {
-                    handle_event_proxy(&mut event_handler, control_flow, proxy)
-                }
+        for event in queued_events {
+            if !processing_redraws && event.is_redraw() {
+                log::info!("processing `RedrawRequested` during the main event loop");
+            } else if processing_redraws && !event.is_redraw() {
+                log::warn!(
+                    "processing non-`RedrawRequested` event after the main event loop: {:#?}",
+                    event
+                );
             }
+            event_handler.handle_nonuser_event(event, &mut control_flow)
         }
     }
 }
@@ -772,15 +755,8 @@ unsafe fn handle_user_events() {
         }
         drop(this);
 
-        for wrapper in queued_events {
-            match wrapper {
-                EventWrapper::StaticEvent(event) => {
-                    event_handler.handle_nonuser_event(event, &mut control_flow)
-                }
-                EventWrapper::EventProxy(proxy) => {
-                    handle_event_proxy(&mut event_handler, control_flow, proxy)
-                }
-            }
+        for event in queued_events {
+            event_handler.handle_nonuser_event(event, &mut control_flow)
         }
         event_handler.handle_user_events(&mut control_flow);
     }
@@ -800,20 +776,16 @@ pub unsafe fn handle_main_events_cleared() {
 
     // User events are always sent out at the end of the "MainEventLoop"
     handle_user_events();
-    handle_nonuser_event(EventWrapper::StaticEvent(Event::MainEventsCleared));
+    handle_nonuser_event(Event::EventsCleared);
 
     let mut this = AppState::get_mut();
-    let mut redraw_events: Vec<EventWrapper> = this
+    let redraw_events = this
         .main_events_cleared_transition()
         .into_iter()
-        .map(|window| {
-            EventWrapper::StaticEvent(Event::RedrawRequested(RootWindowId(window.into())))
-        })
-        .collect();
-
-    if !redraw_events.is_empty() {
-        redraw_events.push(EventWrapper::StaticEvent(Event::RedrawEventsCleared));
-    }
+        .map(|window| Event::WindowEvent {
+            window_id: RootWindowId(window.into()),
+            event: WindowEvent::RedrawRequested,
+        });
     drop(this);
 
     handle_nonuser_events(redraw_events);
@@ -834,66 +806,6 @@ pub unsafe fn terminated() {
     event_handler.handle_nonuser_event(Event::LoopDestroyed, &mut control_flow)
 }
 
-fn handle_event_proxy(
-    event_handler: &mut Box<dyn EventHandler>,
-    control_flow: ControlFlow,
-    proxy: EventProxy,
-) {
-    match proxy {
-        EventProxy::DpiChangedProxy {
-            suggested_size,
-            scale_factor,
-            window_id,
-        } => handle_hidpi_proxy(
-            event_handler,
-            control_flow,
-            suggested_size,
-            scale_factor,
-            window_id,
-        ),
-    }
-}
-
-fn handle_hidpi_proxy(
-    event_handler: &mut Box<dyn EventHandler>,
-    mut control_flow: ControlFlow,
-    suggested_size: LogicalSize<f64>,
-    scale_factor: f64,
-    window_id: id,
-) {
-    let mut size = suggested_size.to_physical(scale_factor);
-    let new_inner_size = &mut size;
-    let event = Event::WindowEvent {
-        window_id: RootWindowId(window_id.into()),
-        event: WindowEvent::ScaleFactorChanged {
-            scale_factor,
-            new_inner_size,
-        },
-    };
-    event_handler.handle_nonuser_event(event, &mut control_flow);
-    let (view, screen_frame) = get_view_and_screen_frame(window_id);
-    let physical_size = *new_inner_size;
-    let logical_size = physical_size.to_logical(scale_factor);
-    let size = CGSize::new(logical_size);
-    let new_frame: CGRect = CGRect::new(screen_frame.origin, size);
-    unsafe {
-        let () = msg_send![view, setFrame: new_frame];
-    }
-}
-
-fn get_view_and_screen_frame(window_id: id) -> (id, CGRect) {
-    unsafe {
-        let view_controller: id = msg_send![window_id, rootViewController];
-        let view: id = msg_send![view_controller, view];
-        let bounds: CGRect = msg_send![window_id, bounds];
-        let screen: id = msg_send![window_id, screen];
-        let screen_space: id = msg_send![screen, coordinateSpace];
-        let screen_frame: CGRect =
-            msg_send![window_id, convertRect:bounds toCoordinateSpace:screen_space];
-        (view, screen_frame)
-    }
-}
-
 struct EventLoopWaker {
     timer: CFRunLoopTimerRef,
 }

src/platform_impl/ios/event_loop.rs

@@ -8,7 +8,6 @@ use std::{
 };
 
 use crate::{
-    dpi::LogicalSize,
     event::Event,
     event_loop::{
         ControlFlow, EventLoopClosed, EventLoopWindowTarget as RootEventLoopWindowTarget,
@@ -29,21 +28,6 @@ use crate::platform_impl::platform::{
     monitor, view, MonitorHandle,
 };
 
-#[derive(Debug)]
-pub enum EventWrapper {
-    StaticEvent(Event<'static, Never>),
-    EventProxy(EventProxy),
-}
-
-#[derive(Debug, PartialEq)]
-pub enum EventProxy {
-    DpiChangedProxy {
-        window_id: id,
-        suggested_size: LogicalSize<f64>,
-        scale_factor: f64,
-    },
-}
-
 pub struct EventLoopWindowTarget<T: 'static> {
     receiver: Receiver<T>,
     sender_to_clone: Sender<T>,
@@ -85,7 +69,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(self, event_handler: F) -> !
     where
-        F: 'static + FnMut(Event<'_, T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
+        F: 'static + FnMut(Event<T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
     {
         unsafe {
             let application: *mut c_void = msg_send![class!(UIApplication), sharedApplication];
@@ -181,10 +165,8 @@ impl<T> EventLoopProxy<T> {
         }
     }
 
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
-        self.sender
-            .send(event)
-            .map_err(|::std::sync::mpsc::SendError(x)| EventLoopClosed(x))?;
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
+        self.sender.send(event).map_err(|_| EventLoopClosed)?;
         unsafe {
             // let the main thread know there's a new event
             CFRunLoopSourceSignal(self.source);
@@ -293,7 +275,7 @@ fn setup_control_flow_observers() {
 pub enum Never {}
 
 pub trait EventHandler: Debug {
-    fn handle_nonuser_event(&mut self, event: Event<'_, Never>, control_flow: &mut ControlFlow);
+    fn handle_nonuser_event(&mut self, event: Event<Never>, control_flow: &mut ControlFlow);
     fn handle_user_events(&mut self, control_flow: &mut ControlFlow);
 }
 
@@ -312,10 +294,10 @@ impl<F, T: 'static> Debug for EventLoopHandler<F, T> {
 
 impl<F, T> EventHandler for EventLoopHandler<F, T>
 where
-    F: 'static + FnMut(Event<'_, T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
+    F: 'static + FnMut(Event<T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
     T: 'static,
 {
-    fn handle_nonuser_event(&mut self, event: Event<'_, Never>, control_flow: &mut ControlFlow) {
+    fn handle_nonuser_event(&mut self, event: Event<Never>, control_flow: &mut ControlFlow) {
         (self.f)(
             event.map_nonuser_event().unwrap(),
             &self.event_loop,

src/platform_impl/ios/ffi.rs

@@ -4,10 +4,7 @@ use std::{convert::TryInto, ffi::CString, ops::BitOr, os::raw::*};
 
 use objc::{runtime::Object, Encode, Encoding};
 
-use crate::{
-    dpi::LogicalSize,
-    platform::ios::{Idiom, ScreenEdge, ValidOrientations},
-};
+use crate::platform::ios::{Idiom, ScreenEdge, ValidOrientations};
 
 pub type id = *mut Object;
 pub const nil: id = 0 as id;
@@ -42,15 +39,6 @@ pub struct CGSize {
     pub height: CGFloat,
 }
 
-impl CGSize {
-    pub fn new(size: LogicalSize<f64>) -> CGSize {
-        CGSize {
-            width: size.width as _,
-            height: size.height as _,
-        }
-    }
-}
-
 #[repr(C)]
 #[derive(Debug, Clone)]
 pub struct CGRect {
@@ -58,12 +46,6 @@ pub struct CGRect {
     pub size: CGSize,
 }
 
-impl CGRect {
-    pub fn new(origin: CGPoint, size: CGSize) -> CGRect {
-        CGRect { origin, size }
-    }
-}
-
 unsafe impl Encode for CGRect {
     fn encode() -> Encoding {
         unsafe {

src/platform_impl/ios/monitor.rs

@@ -18,44 +18,31 @@ pub struct VideoMode {
     pub(crate) size: (u32, u32),
     pub(crate) bit_depth: u16,
     pub(crate) refresh_rate: u16,
-    pub(crate) screen_mode: NativeDisplayMode,
+    pub(crate) screen_mode: id,
     pub(crate) monitor: MonitorHandle,
 }
 
-#[derive(Debug, PartialEq, Eq, Hash)]
-pub struct NativeDisplayMode(pub id);
-
-unsafe impl Send for NativeDisplayMode {}
-
-impl Drop for NativeDisplayMode {
-    fn drop(&mut self) {
-        unsafe {
-            let () = msg_send![self.0, release];
-        }
-    }
-}
-
-impl Clone for NativeDisplayMode {
-    fn clone(&self) -> Self {
-        unsafe {
-            let _: id = msg_send![self.0, retain];
-        }
-        NativeDisplayMode(self.0)
-    }
-}
-
 impl Clone for VideoMode {
     fn clone(&self) -> VideoMode {
         VideoMode {
             size: self.size,
             bit_depth: self.bit_depth,
             refresh_rate: self.refresh_rate,
-            screen_mode: self.screen_mode.clone(),
+            screen_mode: unsafe { msg_send![self.screen_mode, retain] },
             monitor: self.monitor.clone(),
         }
     }
 }
 
+impl Drop for VideoMode {
+    fn drop(&mut self) {
+        unsafe {
+            assert_main_thread!("`VideoMode` can only be dropped on the main thread on iOS");
+            let () = msg_send![self.screen_mode, release];
+        }
+    }
+}
+
 impl VideoMode {
     unsafe fn retained_new(uiscreen: id, screen_mode: id) -> VideoMode {
         assert_main_thread!("`VideoMode` can only be created on the main thread on iOS");
@@ -77,18 +64,16 @@ impl VideoMode {
             60
         };
         let size: CGSize = msg_send![screen_mode, size];
-        let screen_mode: id = msg_send![screen_mode, retain];
-        let screen_mode = NativeDisplayMode(screen_mode);
         VideoMode {
             size: (size.width as u32, size.height as u32),
             bit_depth: 32,
             refresh_rate: refresh_rate as u16,
-            screen_mode,
+            screen_mode: msg_send![screen_mode, retain],
             monitor: MonitorHandle::retained_new(uiscreen),
         }
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.size.into()
     }
 
@@ -171,16 +156,16 @@ impl fmt::Debug for MonitorHandle {
         #[derive(Debug)]
         struct MonitorHandle {
             name: Option<String>,
-            size: PhysicalSize<u32>,
-            position: PhysicalPosition<i32>,
-            scale_factor: f64,
+            size: PhysicalSize,
+            position: PhysicalPosition,
+            hidpi_factor: f64,
         }
 
         let monitor_id_proxy = MonitorHandle {
             name: self.name(),
             size: self.size(),
             position: self.position(),
-            scale_factor: self.scale_factor(),
+            hidpi_factor: self.hidpi_factor(),
         };
 
         monitor_id_proxy.fmt(f)
@@ -216,21 +201,21 @@ impl Inner {
         }
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         unsafe {
             let bounds: CGRect = msg_send![self.ui_screen(), nativeBounds];
-            PhysicalSize::new(bounds.size.width as u32, bounds.size.height as u32)
+            (bounds.size.width as f64, bounds.size.height as f64).into()
         }
     }
 
-    pub fn position(&self) -> PhysicalPosition<i32> {
+    pub fn position(&self) -> PhysicalPosition {
         unsafe {
             let bounds: CGRect = msg_send![self.ui_screen(), nativeBounds];
             (bounds.origin.x as f64, bounds.origin.y as f64).into()
         }
     }
 
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         unsafe {
             let scale: CGFloat = msg_send![self.ui_screen(), nativeScale];
             scale as f64

src/platform_impl/ios/view.rs

@@ -10,7 +10,7 @@ use crate::{
     platform::ios::MonitorHandleExtIOS,
     platform_impl::platform::{
         app_state::{self, OSCapabilities},
-        event_loop::{self, EventProxy, EventWrapper},
+        event_loop,
         ffi::{
             id, nil, CGFloat, CGPoint, CGRect, UIForceTouchCapability, UIInterfaceOrientationMask,
             UIRectEdge, UITouchPhase, UITouchType,
@@ -102,14 +102,10 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
             unsafe {
                 let window: id = msg_send![object, window];
                 assert!(!window.is_null());
-                app_state::handle_nonuser_events(
-                    std::iter::once(EventWrapper::StaticEvent(Event::RedrawRequested(
-                        RootWindowId(window.into()),
-                    )))
-                    .chain(std::iter::once(EventWrapper::StaticEvent(
-                        Event::RedrawEventsCleared,
-                    ))),
-                );
+                app_state::handle_nonuser_event(Event::WindowEvent {
+                    window_id: RootWindowId(window.into()),
+                    event: WindowEvent::RedrawRequested,
+                });
                 let superclass: &'static Class = msg_send![object, superclass];
                 let () = msg_send![super(object, superclass), drawRect: rect];
             }
@@ -127,29 +123,27 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
                 let screen_space: id = msg_send![screen, coordinateSpace];
                 let screen_frame: CGRect =
                     msg_send![object, convertRect:bounds toCoordinateSpace:screen_space];
-                let dpi_factor: CGFloat = msg_send![screen, scale];
                 let size = crate::dpi::LogicalSize {
-                    width: screen_frame.size.width as f64,
-                    height: screen_frame.size.height as f64,
-                }
-                .to_physical(dpi_factor.into());
-                app_state::handle_nonuser_event(EventWrapper::StaticEvent(Event::WindowEvent {
+                    width: screen_frame.size.width as _,
+                    height: screen_frame.size.height as _,
+                };
+                app_state::handle_nonuser_event(Event::WindowEvent {
                     window_id: RootWindowId(window.into()),
                     event: WindowEvent::Resized(size),
-                }));
+                });
             }
         }
 
         extern "C" fn set_content_scale_factor(
             object: &mut Object,
             _: Sel,
-            untrusted_scale_factor: CGFloat,
+            untrusted_hidpi_factor: CGFloat,
         ) {
             unsafe {
                 let superclass: &'static Class = msg_send![object, superclass];
                 let () = msg_send![
                     super(object, superclass),
-                    setContentScaleFactor: untrusted_scale_factor
+                    setContentScaleFactor: untrusted_hidpi_factor
                 ];
 
                 let window: id = msg_send![object, window];
@@ -162,15 +156,14 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
                 // `setContentScaleFactor` may be called with a value of 0, which means "reset the
                 // content scale factor to a device-specific default value", so we can't use the
                 // parameter here. We can query the actual factor using the getter
-                let dpi_factor: CGFloat = msg_send![object, contentScaleFactor];
+                let hidpi_factor: CGFloat = msg_send![object, contentScaleFactor];
                 assert!(
-                    !dpi_factor.is_nan()
-                        && dpi_factor.is_finite()
-                        && dpi_factor.is_sign_positive()
-                        && dpi_factor > 0.0,
-                    "invalid scale_factor set on UIView",
+                    !hidpi_factor.is_nan()
+                        && hidpi_factor.is_finite()
+                        && hidpi_factor.is_sign_positive()
+                        && hidpi_factor > 0.0,
+                    "invalid hidpi_factor set on UIView",
                 );
-                let scale_factor: f64 = dpi_factor.into();
                 let bounds: CGRect = msg_send![object, bounds];
                 let screen: id = msg_send![window, screen];
                 let screen_space: id = msg_send![screen, coordinateSpace];
@@ -181,17 +174,14 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
                     height: screen_frame.size.height as _,
                 };
                 app_state::handle_nonuser_events(
-                    std::iter::once(EventWrapper::EventProxy(EventProxy::DpiChangedProxy {
-                        window_id: window,
-                        scale_factor,
-                        suggested_size: size,
-                    }))
-                    .chain(std::iter::once(EventWrapper::StaticEvent(
-                        Event::WindowEvent {
-                            window_id: RootWindowId(window.into()),
-                            event: WindowEvent::Resized(size.to_physical(scale_factor)),
-                        },
-                    ))),
+                    std::iter::once(Event::WindowEvent {
+                        window_id: RootWindowId(window.into()),
+                        event: WindowEvent::HiDpiFactorChanged(hidpi_factor as _),
+                    })
+                    .chain(std::iter::once(Event::WindowEvent {
+                        window_id: RootWindowId(window.into()),
+                        event: WindowEvent::Resized(size),
+                    })),
                 );
             }
         }
@@ -248,7 +238,7 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
                         _ => panic!("unexpected touch phase: {:?}", phase as i32),
                     };
 
-                    touch_events.push(EventWrapper::StaticEvent(Event::WindowEvent {
+                    touch_events.push(Event::WindowEvent {
                         window_id: RootWindowId(window.into()),
                         event: WindowEvent::Touch(Touch {
                             device_id: RootDeviceId(DeviceId { uiscreen }),
@@ -257,7 +247,7 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
                             force,
                             phase,
                         }),
-                    }));
+                    });
                 }
                 app_state::handle_nonuser_events(touch_events);
             }
@@ -377,20 +367,20 @@ unsafe fn get_window_class() -> &'static Class {
 
         extern "C" fn become_key_window(object: &Object, _: Sel) {
             unsafe {
-                app_state::handle_nonuser_event(EventWrapper::StaticEvent(Event::WindowEvent {
+                app_state::handle_nonuser_event(Event::WindowEvent {
                     window_id: RootWindowId(object.into()),
                     event: WindowEvent::Focused(true),
-                }));
+                });
                 let () = msg_send![super(object, class!(UIWindow)), becomeKeyWindow];
             }
         }
 
         extern "C" fn resign_key_window(object: &Object, _: Sel) {
             unsafe {
-                app_state::handle_nonuser_event(EventWrapper::StaticEvent(Event::WindowEvent {
+                app_state::handle_nonuser_event(Event::WindowEvent {
                     window_id: RootWindowId(object.into()),
                     event: WindowEvent::Focused(false),
-                }));
+                });
                 let () = msg_send![super(object, class!(UIWindow)), resignKeyWindow];
             }
         }
@@ -424,8 +414,8 @@ pub unsafe fn create_view(
     let view: id = msg_send![view, initWithFrame: frame];
     assert!(!view.is_null(), "Failed to initialize `UIView` instance");
     let () = msg_send![view, setMultipleTouchEnabled: YES];
-    if let Some(scale_factor) = platform_attributes.scale_factor {
-        let () = msg_send![view, setContentScaleFactor: scale_factor as CGFloat];
+    if let Some(hidpi_factor) = platform_attributes.hidpi_factor {
+        let () = msg_send![view, setContentScaleFactor: hidpi_factor as CGFloat];
     }
 
     view
@@ -507,7 +497,7 @@ pub unsafe fn create_window(
     match window_attributes.fullscreen {
         Some(Fullscreen::Exclusive(ref video_mode)) => {
             let uiscreen = video_mode.monitor().ui_screen() as id;
-            let () = msg_send![uiscreen, setCurrentMode: video_mode.video_mode.screen_mode.0];
+            let () = msg_send![uiscreen, setCurrentMode: video_mode.video_mode.screen_mode];
             msg_send![window, setScreen:video_mode.monitor().ui_screen()]
         }
         Some(Fullscreen::Borderless(ref monitor)) => {
@@ -528,11 +518,11 @@ pub fn create_delegate_class() {
     }
 
     extern "C" fn did_become_active(_: &Object, _: Sel, _: id) {
-        unsafe { app_state::handle_nonuser_event(EventWrapper::StaticEvent(Event::Resumed)) }
+        unsafe { app_state::handle_nonuser_event(Event::Resumed) }
     }
 
     extern "C" fn will_resign_active(_: &Object, _: Sel, _: id) {
-        unsafe { app_state::handle_nonuser_event(EventWrapper::StaticEvent(Event::Suspended)) }
+        unsafe { app_state::handle_nonuser_event(Event::Suspended) }
     }
 
     extern "C" fn will_enter_foreground(_: &Object, _: Sel, _: id) {}
@@ -551,10 +541,10 @@ pub fn create_delegate_class() {
                 }
                 let is_winit_window: BOOL = msg_send![window, isKindOfClass: class!(WinitUIWindow)];
                 if is_winit_window == YES {
-                    events.push(EventWrapper::StaticEvent(Event::WindowEvent {
+                    events.push(Event::WindowEvent {
                         window_id: RootWindowId(window.into()),
                         event: WindowEvent::Destroyed,
-                    }));
+                    });
                 }
             }
             app_state::handle_nonuser_events(events);

src/platform_impl/ios/window.rs

@@ -7,15 +7,14 @@ use std::{
 use objc::runtime::{Class, Object, BOOL, NO, YES};
 
 use crate::{
-    dpi::{self, LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size},
+    dpi::{self, LogicalPosition, LogicalSize},
     error::{ExternalError, NotSupportedError, OsError as RootOsError},
     event::{Event, WindowEvent},
     icon::Icon,
     monitor::MonitorHandle as RootMonitorHandle,
     platform::ios::{MonitorHandleExtIOS, ScreenEdge, ValidOrientations},
     platform_impl::platform::{
-        app_state,
-        event_loop::{self, EventProxy, EventWrapper},
+        app_state, event_loop,
         ffi::{
             id, CGFloat, CGPoint, CGRect, CGSize, UIEdgeInsets, UIInterfaceOrientationMask,
             UIRectEdge, UIScreenOverscanCompensation,
@@ -76,34 +75,28 @@ impl Inner {
         }
     }
 
-    pub fn inner_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn inner_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         unsafe {
             let safe_area = self.safe_area_screen_space();
-            let position = LogicalPosition {
-                x: safe_area.origin.x as f64,
-                y: safe_area.origin.y as f64,
-            };
-            let dpi_factor = self.scale_factor();
-            Ok(position.to_physical(dpi_factor))
+            Ok(LogicalPosition {
+                x: safe_area.origin.x as _,
+                y: safe_area.origin.y as _,
+            })
         }
     }
 
-    pub fn outer_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn outer_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         unsafe {
             let screen_frame = self.screen_frame();
-            let position = LogicalPosition {
-                x: screen_frame.origin.x as f64,
-                y: screen_frame.origin.y as f64,
-            };
-            let dpi_factor = self.scale_factor();
-            Ok(position.to_physical(dpi_factor))
+            Ok(LogicalPosition {
+                x: screen_frame.origin.x as _,
+                y: screen_frame.origin.y as _,
+            })
         }
     }
 
-    pub fn set_outer_position(&self, physical_position: Position) {
+    pub fn set_outer_position(&self, position: LogicalPosition) {
         unsafe {
-            let dpi_factor = self.scale_factor();
-            let position = physical_position.to_logical::<f64>(dpi_factor);
             let screen_frame = self.screen_frame();
             let new_screen_frame = CGRect {
                 origin: CGPoint {
@@ -117,39 +110,35 @@ impl Inner {
         }
     }
 
-    pub fn inner_size(&self) -> PhysicalSize<u32> {
+    pub fn inner_size(&self) -> LogicalSize {
         unsafe {
-            let dpi_factor = self.scale_factor();
             let safe_area = self.safe_area_screen_space();
-            let size = LogicalSize {
-                width: safe_area.size.width as f64,
-                height: safe_area.size.height as f64,
-            };
-            size.to_physical(dpi_factor)
+            LogicalSize {
+                width: safe_area.size.width as _,
+                height: safe_area.size.height as _,
+            }
         }
     }
 
-    pub fn outer_size(&self) -> PhysicalSize<u32> {
+    pub fn outer_size(&self) -> LogicalSize {
         unsafe {
-            let dpi_factor = self.scale_factor();
             let screen_frame = self.screen_frame();
-            let size = LogicalSize {
-                width: screen_frame.size.width as f64,
-                height: screen_frame.size.height as f64,
-            };
-            size.to_physical(dpi_factor)
+            LogicalSize {
+                width: screen_frame.size.width as _,
+                height: screen_frame.size.height as _,
+            }
         }
     }
 
-    pub fn set_inner_size(&self, _size: Size) {
+    pub fn set_inner_size(&self, _size: LogicalSize) {
         unimplemented!("not clear what `Window::set_inner_size` means on iOS");
     }
 
-    pub fn set_min_inner_size(&self, _dimensions: Option<Size>) {
+    pub fn set_min_inner_size(&self, _dimensions: Option<LogicalSize>) {
         warn!("`Window::set_min_inner_size` is ignored on iOS")
     }
 
-    pub fn set_max_inner_size(&self, _dimensions: Option<Size>) {
+    pub fn set_max_inner_size(&self, _dimensions: Option<LogicalSize>) {
         warn!("`Window::set_max_inner_size` is ignored on iOS")
     }
 
@@ -157,7 +146,7 @@ impl Inner {
         warn!("`Window::set_resizable` is ignored on iOS")
     }
 
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         unsafe {
             let hidpi: CGFloat = msg_send![self.view, contentScaleFactor];
             hidpi as _
@@ -168,7 +157,7 @@ impl Inner {
         debug!("`Window::set_cursor_icon` ignored on iOS")
     }
 
-    pub fn set_cursor_position(&self, _position: Position) -> Result<(), ExternalError> {
+    pub fn set_cursor_position(&self, _position: LogicalPosition) -> Result<(), ExternalError> {
         Err(ExternalError::NotSupported(NotSupportedError::new()))
     }
 
@@ -180,10 +169,6 @@ impl Inner {
         debug!("`Window::set_cursor_visible` is ignored on iOS")
     }
 
-    pub fn set_minimized(&self, _minimized: bool) {
-        warn!("`Window::set_minimized` is ignored on iOS")
-    }
-
     pub fn set_maximized(&self, _maximized: bool) {
         warn!("`Window::set_maximized` is ignored on iOS")
     }
@@ -254,7 +239,7 @@ impl Inner {
         warn!("`Window::set_window_icon` is ignored on iOS")
     }
 
-    pub fn set_ime_position(&self, _position: Position) {
+    pub fn set_ime_position(&self, _position: LogicalPosition) {
         warn!("`Window::set_ime_position` is ignored on iOS")
     }
 
@@ -354,17 +339,13 @@ impl Window {
             let screen_bounds: CGRect = msg_send![screen, bounds];
 
             let frame = match window_attributes.inner_size {
-                Some(dim) => {
-                    let dpi_factor = msg_send![screen, scale];
-                    let size = dim.to_logical::<f64>(dpi_factor);
-                    CGRect {
-                        origin: screen_bounds.origin,
-                        size: CGSize {
-                            width: size.width as _,
-                            height: size.height as _,
-                        },
-                    }
-                }
+                Some(dim) => CGRect {
+                    origin: screen_bounds.origin,
+                    size: CGSize {
+                        width: dim.width as _,
+                        height: dim.height as _,
+                    },
+                },
                 None => screen_bounds,
             };
 
@@ -398,11 +379,10 @@ impl Window {
             };
             app_state::set_key_window(window);
 
-            // Like the Windows and macOS backends, we send a `ScaleFactorChanged` and `Resized`
+            // Like the Windows and macOS backends, we send a `HiDpiFactorChanged` and `Resized`
             // event on window creation if the DPI factor != 1.0
-            let dpi_factor: CGFloat = msg_send![view, contentScaleFactor];
-            let scale_factor: f64 = dpi_factor.into();
-            if scale_factor != 1.0 {
+            let hidpi_factor: CGFloat = msg_send![view, contentScaleFactor];
+            if hidpi_factor != 1.0 {
                 let bounds: CGRect = msg_send![view, bounds];
                 let screen: id = msg_send![window, screen];
                 let screen_space: id = msg_send![screen, coordinateSpace];
@@ -413,17 +393,14 @@ impl Window {
                     height: screen_frame.size.height as _,
                 };
                 app_state::handle_nonuser_events(
-                    std::iter::once(EventWrapper::EventProxy(EventProxy::DpiChangedProxy {
-                        window_id: window,
-                        scale_factor,
-                        suggested_size: size,
-                    }))
-                    .chain(std::iter::once(EventWrapper::StaticEvent(
-                        Event::WindowEvent {
-                            window_id: RootWindowId(window.into()),
-                            event: WindowEvent::Resized(size.to_physical(scale_factor)),
-                        },
-                    ))),
+                    std::iter::once(Event::WindowEvent {
+                        window_id: RootWindowId(window.into()),
+                        event: WindowEvent::HiDpiFactorChanged(hidpi_factor as _),
+                    })
+                    .chain(std::iter::once(Event::WindowEvent {
+                        window_id: RootWindowId(window.into()),
+                        event: WindowEvent::Resized(size),
+                    })),
                 );
             }
 
@@ -444,14 +421,14 @@ impl Inner {
         self.view
     }
 
-    pub fn set_scale_factor(&self, scale_factor: f64) {
+    pub fn set_hidpi_factor(&self, hidpi_factor: f64) {
         unsafe {
             assert!(
-                dpi::validate_scale_factor(scale_factor),
-                "`WindowExtIOS::set_scale_factor` received an invalid hidpi factor"
+                dpi::validate_hidpi_factor(hidpi_factor),
+                "`WindowExtIOS::set_hidpi_factor` received an invalid hidpi factor"
             );
-            let scale_factor = scale_factor as CGFloat;
-            let () = msg_send![self.view, setContentScaleFactor: scale_factor];
+            let hidpi_factor = hidpi_factor as CGFloat;
+            let () = msg_send![self.view, setContentScaleFactor: hidpi_factor];
         }
     }
 
@@ -617,7 +594,7 @@ impl From<id> for WindowId {
 #[derive(Clone)]
 pub struct PlatformSpecificWindowBuilderAttributes {
     pub root_view_class: &'static Class,
-    pub scale_factor: Option<f64>,
+    pub hidpi_factor: Option<f64>,
     pub valid_orientations: ValidOrientations,
     pub prefers_home_indicator_hidden: bool,
     pub prefers_status_bar_hidden: bool,
@@ -628,7 +605,7 @@ impl Default for PlatformSpecificWindowBuilderAttributes {
     fn default() -> PlatformSpecificWindowBuilderAttributes {
         PlatformSpecificWindowBuilderAttributes {
             root_view_class: class!(UIView),
-            scale_factor: None,
+            hidpi_factor: None,
             valid_orientations: Default::default(),
             prefers_home_indicator_hidden: false,
             prefers_status_bar_hidden: false,

src/platform_impl/linux/mod.rs

@@ -7,9 +7,11 @@ use raw_window_handle::RawWindowHandle;
 use smithay_client_toolkit::reexports::client::ConnectError;
 
 pub use self::x11::XNotSupported;
-use self::x11::{ffi::XVisualInfo, util::WindowType as XWindowType, XConnection, XError};
+use self::x11::{
+    ffi::XVisualInfo, get_xtarget, util::WindowType as XWindowType, XConnection, XError,
+};
 use crate::{
-    dpi::{PhysicalPosition, PhysicalSize, Position, Size},
+    dpi::{LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize},
     error::{ExternalError, NotSupportedError, OsError as RootOsError},
     event::Event,
     event_loop::{ControlFlow, EventLoopClosed, EventLoopWindowTarget as RootELW},
@@ -34,8 +36,8 @@ const BACKEND_PREFERENCE_ENV_VAR: &str = "WINIT_UNIX_BACKEND";
 pub struct PlatformSpecificWindowBuilderAttributes {
     pub visual_infos: Option<XVisualInfo>,
     pub screen_id: Option<i32>,
-    pub resize_increments: Option<Size>,
-    pub base_size: Option<Size>,
+    pub resize_increments: Option<(u32, u32)>,
+    pub base_size: Option<(u32, u32)>,
     pub class: Option<(String, String)>,
     pub override_redirect: bool,
     pub x11_window_types: Vec<XWindowType>,
@@ -132,7 +134,7 @@ impl MonitorHandle {
     }
 
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         match self {
             &MonitorHandle::X(ref m) => m.size(),
             &MonitorHandle::Wayland(ref m) => m.size(),
@@ -140,7 +142,7 @@ impl MonitorHandle {
     }
 
     #[inline]
-    pub fn position(&self) -> PhysicalPosition<i32> {
+    pub fn position(&self) -> PhysicalPosition {
         match self {
             &MonitorHandle::X(ref m) => m.position(),
             &MonitorHandle::Wayland(ref m) => m.position(),
@@ -148,10 +150,10 @@ impl MonitorHandle {
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         match self {
-            &MonitorHandle::X(ref m) => m.scale_factor(),
-            &MonitorHandle::Wayland(ref m) => m.scale_factor() as f64,
+            &MonitorHandle::X(ref m) => m.hidpi_factor(),
+            &MonitorHandle::Wayland(ref m) => m.hidpi_factor() as f64,
         }
     }
 
@@ -172,7 +174,7 @@ pub enum VideoMode {
 
 impl VideoMode {
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         match self {
             &VideoMode::X(ref m) => m.size(),
             &VideoMode::Wayland(ref m) => m.size(),
@@ -246,7 +248,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn outer_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn outer_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         match self {
             &Window::X(ref w) => w.outer_position(),
             &Window::Wayland(ref w) => w.outer_position(),
@@ -254,7 +256,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn inner_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn inner_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         match self {
             &Window::X(ref m) => m.inner_position(),
             &Window::Wayland(ref m) => m.inner_position(),
@@ -262,7 +264,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_outer_position(&self, position: Position) {
+    pub fn set_outer_position(&self, position: LogicalPosition) {
         match self {
             &Window::X(ref w) => w.set_outer_position(position),
             &Window::Wayland(ref w) => w.set_outer_position(position),
@@ -270,7 +272,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn inner_size(&self) -> PhysicalSize<u32> {
+    pub fn inner_size(&self) -> LogicalSize {
         match self {
             &Window::X(ref w) => w.inner_size(),
             &Window::Wayland(ref w) => w.inner_size(),
@@ -278,7 +280,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn outer_size(&self) -> PhysicalSize<u32> {
+    pub fn outer_size(&self) -> LogicalSize {
         match self {
             &Window::X(ref w) => w.outer_size(),
             &Window::Wayland(ref w) => w.outer_size(),
@@ -286,7 +288,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_inner_size(&self, size: Size) {
+    pub fn set_inner_size(&self, size: LogicalSize) {
         match self {
             &Window::X(ref w) => w.set_inner_size(size),
             &Window::Wayland(ref w) => w.set_inner_size(size),
@@ -294,7 +296,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_min_inner_size(&self, dimensions: Option<Size>) {
+    pub fn set_min_inner_size(&self, dimensions: Option<LogicalSize>) {
         match self {
             &Window::X(ref w) => w.set_min_inner_size(dimensions),
             &Window::Wayland(ref w) => w.set_min_inner_size(dimensions),
@@ -302,7 +304,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_max_inner_size(&self, dimensions: Option<Size>) {
+    pub fn set_max_inner_size(&self, dimensions: Option<LogicalSize>) {
         match self {
             &Window::X(ref w) => w.set_max_inner_size(dimensions),
             &Window::Wayland(ref w) => w.set_max_inner_size(dimensions),
@@ -342,15 +344,15 @@ impl Window {
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         match self {
-            &Window::X(ref w) => w.scale_factor(),
-            &Window::Wayland(ref w) => w.scale_factor() as f64,
+            &Window::X(ref w) => w.hidpi_factor(),
+            &Window::Wayland(ref w) => w.hidpi_factor() as f64,
         }
     }
 
     #[inline]
-    pub fn set_cursor_position(&self, position: Position) -> Result<(), ExternalError> {
+    pub fn set_cursor_position(&self, position: LogicalPosition) -> Result<(), ExternalError> {
         match self {
             &Window::X(ref w) => w.set_cursor_position(position),
             &Window::Wayland(ref w) => w.set_cursor_position(position),
@@ -365,14 +367,6 @@ impl Window {
         }
     }
 
-    #[inline]
-    pub fn set_minimized(&self, minimized: bool) {
-        match self {
-            &Window::X(ref w) => w.set_minimized(minimized),
-            &Window::Wayland(ref w) => w.set_minimized(minimized),
-        }
-    }
-
     #[inline]
     pub fn fullscreen(&self) -> Option<Fullscreen> {
         match self {
@@ -414,7 +408,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_ime_position(&self, position: Position) {
+    pub fn set_ime_position(&self, position: LogicalPosition) {
         match self {
             &Window::X(ref w) => w.set_ime_position(position),
             &Window::Wayland(_) => (),
@@ -601,7 +595,7 @@ impl<T: 'static> EventLoop<T> {
                 .into_iter()
                 .map(MonitorHandle::Wayland)
                 .collect(),
-            EventLoop::X(ref evlp) => evlp
+            EventLoop::X(ref evlp) => get_xtarget(&evlp.target)
                 .x_connection()
                 .available_monitors()
                 .into_iter()
@@ -614,7 +608,9 @@ impl<T: 'static> EventLoop<T> {
     pub fn primary_monitor(&self) -> MonitorHandle {
         match *self {
             EventLoop::Wayland(ref evlp) => MonitorHandle::Wayland(evlp.primary_monitor()),
-            EventLoop::X(ref evlp) => MonitorHandle::X(evlp.x_connection().primary_monitor()),
+            EventLoop::X(ref evlp) => {
+                MonitorHandle::X(get_xtarget(&evlp.target).x_connection().primary_monitor())
+            }
         }
     }
 
@@ -627,7 +623,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run_return<F>(&mut self, callback: F)
     where
-        F: FnMut(crate::event::Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+        F: FnMut(crate::event::Event<T>, &RootELW<T>, &mut ControlFlow),
     {
         match *self {
             EventLoop::Wayland(ref mut evlp) => evlp.run_return(callback),
@@ -637,7 +633,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(self, callback: F) -> !
     where
-        F: 'static + FnMut(crate::event::Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+        F: 'static + FnMut(crate::event::Event<T>, &RootELW<T>, &mut ControlFlow),
     {
         match self {
             EventLoop::Wayland(evlp) => evlp.run(callback),
@@ -654,7 +650,7 @@ impl<T: 'static> EventLoop<T> {
 }
 
 impl<T: 'static> EventLoopProxy<T> {
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
         match *self {
             EventLoopProxy::Wayland(ref proxy) => proxy.send_event(event),
             EventLoopProxy::X(ref proxy) => proxy.send_event(event),
@@ -678,12 +674,12 @@ impl<T> EventLoopWindowTarget<T> {
 }
 
 fn sticky_exit_callback<T, F>(
-    evt: Event<'_, T>,
+    evt: Event<T>,
     target: &RootELW<T>,
     control_flow: &mut ControlFlow,
     callback: &mut F,
 ) where
-    F: FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+    F: FnMut(Event<T>, &RootELW<T>, &mut ControlFlow),
 {
     // make ControlFlow::Exit sticky by providing a dummy
     // control flow reference if it is already Exit.

src/platform_impl/linux/wayland/event_loop.rs

@@ -2,16 +2,11 @@ use std::{
     cell::RefCell,
     collections::VecDeque,
     fmt,
-    io::ErrorKind,
     rc::Rc,
     sync::{Arc, Mutex},
-    time::{Duration, Instant},
+    time::Instant,
 };
 
-use mio::{Events, Poll, PollOpt, Ready, Token};
-
-use mio_extras::channel::{channel, Receiver, SendError, Sender};
-
 use smithay_client_toolkit::reexports::protocols::unstable::pointer_constraints::v1::client::{
     zwp_locked_pointer_v1::ZwpLockedPointerV1, zwp_pointer_constraints_v1::ZwpPointerConstraintsV1,
 };
@@ -26,17 +21,15 @@ use smithay_client_toolkit::reexports::client::protocol::{
 };
 
 use crate::{
-    dpi::{LogicalSize, PhysicalPosition, PhysicalSize},
-    event::{
-        DeviceEvent, DeviceId as RootDeviceId, Event, ModifiersState, StartCause, WindowEvent,
-    },
+    dpi::{PhysicalPosition, PhysicalSize},
+    event::ModifiersState,
     event_loop::{ControlFlow, EventLoopClosed, EventLoopWindowTarget as RootELW},
     monitor::{MonitorHandle as RootMonitorHandle, VideoMode as RootVideoMode},
     platform_impl::platform::{
-        sticky_exit_callback, DeviceId as PlatformDeviceId, MonitorHandle as PlatformMonitorHandle,
-        VideoMode as PlatformVideoMode, WindowId as PlatformWindowId,
+        sticky_exit_callback, MonitorHandle as PlatformMonitorHandle,
+        VideoMode as PlatformVideoMode,
     },
-    window::{CursorIcon, WindowId as RootWindowId},
+    window::CursorIcon,
 };
 
 use super::{window::WindowStore, DeviceId, WindowId};
@@ -50,37 +43,43 @@ use smithay_client_toolkit::{
     Environment,
 };
 
-const KBD_TOKEN: Token = Token(0);
-const USER_TOKEN: Token = Token(1);
-const EVQ_TOKEN: Token = Token(2);
-
-#[derive(Clone)]
-pub struct EventsSink {
-    sender: Sender<Event<'static, ()>>,
+pub struct WindowEventsSink<T> {
+    buffer: VecDeque<crate::event::Event<T>>,
 }
 
-impl EventsSink {
-    pub fn new(sender: Sender<Event<'static, ()>>) -> EventsSink {
-        EventsSink { sender }
+impl<T> WindowEventsSink<T> {
+    pub fn new() -> WindowEventsSink<T> {
+        WindowEventsSink {
+            buffer: VecDeque::new(),
+        }
     }
 
-    pub fn send_event(&self, event: Event<'static, ()>) {
-        self.sender.send(event).unwrap()
+    pub fn send_event(&mut self, evt: crate::event::Event<T>) {
+        self.buffer.push_back(evt);
     }
 
-    pub fn send_device_event(&self, event: DeviceEvent, device_id: DeviceId) {
-        self.send_event(Event::DeviceEvent {
-            event,
-            device_id: RootDeviceId(PlatformDeviceId::Wayland(device_id)),
+    pub fn send_window_event(&mut self, evt: crate::event::WindowEvent, wid: WindowId) {
+        self.buffer.push_back(crate::event::Event::WindowEvent {
+            event: evt,
+            window_id: crate::window::WindowId(crate::platform_impl::WindowId::Wayland(wid)),
         });
     }
 
-    pub fn send_window_event(&self, event: WindowEvent<'static>, window_id: WindowId) {
-        self.send_event(Event::WindowEvent {
-            event,
-            window_id: RootWindowId(PlatformWindowId::Wayland(window_id)),
+    pub fn send_device_event(&mut self, evt: crate::event::DeviceEvent, dev_id: DeviceId) {
+        self.buffer.push_back(crate::event::Event::DeviceEvent {
+            event: evt,
+            device_id: crate::event::DeviceId(crate::platform_impl::DeviceId::Wayland(dev_id)),
         });
     }
+
+    fn empty_with<F>(&mut self, mut callback: F)
+    where
+        F: FnMut(crate::event::Event<T>),
+    {
+        for evt in self.buffer.drain(..) {
+            callback(evt)
+        }
+    }
 }
 
 pub struct CursorManager {
@@ -231,17 +230,21 @@ impl CursorManager {
 }
 
 pub struct EventLoop<T: 'static> {
-    // Poll instance
-    poll: Poll,
+    // The loop
+    inner_loop: ::calloop::EventLoop<()>,
     // The wayland display
     pub display: Arc<Display>,
     // The output manager
     pub outputs: OutputMgr,
+    // Our sink, shared with some handlers, buffering the events
+    sink: Arc<Mutex<WindowEventsSink<T>>>,
+    pending_user_events: Rc<RefCell<VecDeque<T>>>,
     // The cursor manager
     cursor_manager: Arc<Mutex<CursorManager>>,
-    kbd_channel: Receiver<Event<'static, ()>>,
-    user_channel: Receiver<T>,
-    user_sender: Sender<T>,
+    // Utility for grabbing the cursor and changing visibility
+    _user_source: ::calloop::Source<::calloop::channel::Channel<T>>,
+    user_sender: ::calloop::channel::Sender<T>,
+    _kbd_source: ::calloop::Source<::calloop::channel::Channel<crate::event::Event<()>>>,
     window_target: RootELW<T>,
 }
 
@@ -249,12 +252,12 @@ pub struct EventLoop<T: 'static> {
 //
 // We should only try and wake up the `EventLoop` if it still exists, so we hold Weak ptrs.
 pub struct EventLoopProxy<T: 'static> {
-    user_sender: Sender<T>,
+    user_sender: calloop::channel::Sender<T>,
 }
 
 pub struct EventLoopWindowTarget<T> {
-    // the event queue
-    pub evq: RefCell<EventQueue>,
+    // The event queue
+    pub evq: RefCell<::calloop::Source<EventQueue>>,
     // The window store
     pub store: Arc<Mutex<WindowStore>>,
     // The cursor manager
@@ -279,14 +282,8 @@ impl<T: 'static> Clone for EventLoopProxy<T> {
 }
 
 impl<T: 'static> EventLoopProxy<T> {
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
-        self.user_sender.send(event).map_err(|e| {
-            EventLoopClosed(if let SendError::Disconnected(x) = e {
-                x
-            } else {
-                unreachable!()
-            })
-        })
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
+        self.user_sender.send(event).map_err(|_| EventLoopClosed)
     }
 }
 
@@ -295,26 +292,33 @@ impl<T: 'static> EventLoop<T> {
         let (display, mut event_queue) = Display::connect_to_env()?;
 
         let display = Arc::new(display);
+        let sink = Arc::new(Mutex::new(WindowEventsSink::new()));
         let store = Arc::new(Mutex::new(WindowStore::new()));
         let seats = Arc::new(Mutex::new(Vec::new()));
 
-        let poll = Poll::new().unwrap();
+        let inner_loop = ::calloop::EventLoop::new().unwrap();
 
-        let (kbd_sender, kbd_channel) = channel();
-
-        let sink = EventsSink::new(kbd_sender);
-
-        poll.register(&kbd_channel, KBD_TOKEN, Ready::readable(), PollOpt::level())
+        let (kbd_sender, kbd_channel) = ::calloop::channel::channel::<crate::event::Event<()>>();
+        let kbd_sink = sink.clone();
+        let kbd_source = inner_loop
+            .handle()
+            .insert_source(kbd_channel, move |evt, &mut ()| {
+                if let ::calloop::channel::Event::Msg(evt) = evt {
+                    let evt = evt.map_nonuser_event().ok().unwrap();
+                    kbd_sink.lock().unwrap().send_event(evt);
+                }
+            })
             .unwrap();
 
         let pointer_constraints_proxy = Arc::new(Mutex::new(None));
 
         let mut seat_manager = SeatManager {
-            sink,
-            store: store.clone(),
-            seats: seats.clone(),
+            sink: sink.clone(),
             relative_pointer_manager_proxy: Rc::new(RefCell::new(None)),
             pointer_constraints_proxy: pointer_constraints_proxy.clone(),
+            store: store.clone(),
+            seats: seats.clone(),
+            kbd_sender,
             cursor_manager: Arc::new(Mutex::new(CursorManager::new(pointer_constraints_proxy))),
         };
 
@@ -394,31 +398,39 @@ impl<T: 'static> EventLoop<T> {
         )
         .unwrap();
 
-        poll.register(&event_queue, EVQ_TOKEN, Ready::readable(), PollOpt::level())
+        let source = inner_loop
+            .handle()
+            .insert_source(event_queue, |(), &mut ()| {})
             .unwrap();
 
-        let (user_sender, user_channel) = channel();
+        let pending_user_events = Rc::new(RefCell::new(VecDeque::new()));
+        let pending_user_events2 = pending_user_events.clone();
 
-        poll.register(
-            &user_channel,
-            USER_TOKEN,
-            Ready::readable(),
-            PollOpt::level(),
-        )
-        .unwrap();
+        let (user_sender, user_channel) = ::calloop::channel::channel();
+
+        let user_source = inner_loop
+            .handle()
+            .insert_source(user_channel, move |evt, &mut ()| {
+                if let ::calloop::channel::Event::Msg(msg) = evt {
+                    pending_user_events2.borrow_mut().push_back(msg);
+                }
+            })
+            .unwrap();
 
         let cursor_manager_clone = cursor_manager.clone();
         Ok(EventLoop {
-            poll,
+            inner_loop,
+            sink,
+            pending_user_events,
             display: display.clone(),
             outputs: env.outputs.clone(),
+            _user_source: user_source,
             user_sender,
-            user_channel,
-            kbd_channel,
             cursor_manager,
+            _kbd_source: kbd_source,
             window_target: RootELW {
                 p: crate::platform_impl::EventLoopWindowTarget::Wayland(EventLoopWindowTarget {
-                    evq: RefCell::new(event_queue),
+                    evq: RefCell::new(source),
                     store,
                     env,
                     cursor_manager: cursor_manager_clone,
@@ -440,7 +452,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(mut self, callback: F) -> !
     where
-        F: 'static + FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+        F: 'static + FnMut(crate::event::Event<T>, &RootELW<T>, &mut ControlFlow),
     {
         self.run_return(callback);
         std::process::exit(0);
@@ -448,84 +460,67 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run_return<F>(&mut self, mut callback: F)
     where
-        F: FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+        F: FnMut(crate::event::Event<T>, &RootELW<T>, &mut ControlFlow),
     {
         // send pending events to the server
         self.display.flush().expect("Wayland connection lost.");
 
         let mut control_flow = ControlFlow::default();
-        let mut events = Events::with_capacity(8);
+
+        let sink = self.sink.clone();
+        let user_events = self.pending_user_events.clone();
 
         callback(
-            Event::NewEvents(StartCause::Init),
+            crate::event::Event::NewEvents(crate::event::StartCause::Init),
             &self.window_target,
             &mut control_flow,
         );
 
         loop {
-            // Read events from the event queue
+            self.post_dispatch_triggers();
+
+            // empty buffer of events
             {
-                let mut evq = get_target(&self.window_target).evq.borrow_mut();
-
-                evq.dispatch_pending()
-                    .expect("failed to dispatch wayland events");
-
-                if let Some(read) = evq.prepare_read() {
-                    if let Err(e) = read.read_events() {
-                        if e.kind() != ErrorKind::WouldBlock {
-                            panic!("failed to read wayland events: {}", e);
-                        }
-                    }
-
-                    evq.dispatch_pending()
-                        .expect("failed to dispatch wayland events");
-                }
-            }
-
-            self.post_dispatch_triggers(&mut callback, &mut control_flow);
-
-            while let Ok(event) = self.kbd_channel.try_recv() {
-                let event = event.map_nonuser_event().unwrap();
-                sticky_exit_callback(event, &self.window_target, &mut control_flow, &mut callback);
-            }
-
-            while let Ok(event) = self.user_channel.try_recv() {
-                sticky_exit_callback(
-                    Event::UserEvent(event),
-                    &self.window_target,
-                    &mut control_flow,
-                    &mut callback,
-                );
-            }
-
-            // send Events cleared
-            {
-                sticky_exit_callback(
-                    Event::MainEventsCleared,
-                    &self.window_target,
-                    &mut control_flow,
-                    &mut callback,
-                );
-            }
-
-            // handle request-redraw
-            {
-                self.redraw_triggers(|wid, window_target| {
+                let mut guard = sink.lock().unwrap();
+                guard.empty_with(|evt| {
                     sticky_exit_callback(
-                        Event::RedrawRequested(crate::window::WindowId(
-                            crate::platform_impl::WindowId::Wayland(wid),
-                        )),
-                        window_target,
+                        evt,
+                        &self.window_target,
                         &mut control_flow,
                         &mut callback,
                     );
                 });
             }
-
-            // send RedrawEventsCleared
+            // empty user events
+            {
+                let mut guard = user_events.borrow_mut();
+                for evt in guard.drain(..) {
+                    sticky_exit_callback(
+                        crate::event::Event::UserEvent(evt),
+                        &self.window_target,
+                        &mut control_flow,
+                        &mut callback,
+                    );
+                }
+            }
+            // do a second run of post-dispatch-triggers, to handle user-generated "request-redraw"
+            // in response of resize & friends
+            self.post_dispatch_triggers();
+            {
+                let mut guard = sink.lock().unwrap();
+                guard.empty_with(|evt| {
+                    sticky_exit_callback(
+                        evt,
+                        &self.window_target,
+                        &mut control_flow,
+                        &mut callback,
+                    );
+                });
+            }
+            // send Events cleared
             {
                 sticky_exit_callback(
-                    Event::RedrawEventsCleared,
+                    crate::event::Event::EventsCleared,
                     &self.window_target,
                     &mut control_flow,
                     &mut callback,
@@ -558,25 +553,24 @@ impl<T: 'static> EventLoop<T> {
                 ControlFlow::Exit => break,
                 ControlFlow::Poll => {
                     // non-blocking dispatch
-                    self.poll
-                        .poll(&mut events, Some(Duration::from_millis(0)))
+                    self.inner_loop
+                        .dispatch(Some(::std::time::Duration::from_millis(0)), &mut ())
                         .unwrap();
-                    events.clear();
-
                     callback(
-                        Event::NewEvents(StartCause::Poll),
+                        crate::event::Event::NewEvents(crate::event::StartCause::Poll),
                         &self.window_target,
                         &mut control_flow,
                     );
                 }
                 ControlFlow::Wait => {
-                    if !instant_wakeup {
-                        self.poll.poll(&mut events, None).unwrap();
-                        events.clear();
-                    }
-
+                    let timeout = if instant_wakeup {
+                        Some(::std::time::Duration::from_millis(0))
+                    } else {
+                        None
+                    };
+                    self.inner_loop.dispatch(timeout, &mut ()).unwrap();
                     callback(
-                        Event::NewEvents(StartCause::WaitCancelled {
+                        crate::event::Event::NewEvents(crate::event::StartCause::WaitCancelled {
                             start: Instant::now(),
                             requested_resume: None,
                         }),
@@ -590,27 +584,29 @@ impl<T: 'static> EventLoop<T> {
                     let duration = if deadline > start && !instant_wakeup {
                         deadline - start
                     } else {
-                        Duration::from_millis(0)
+                        ::std::time::Duration::from_millis(0)
                     };
-                    self.poll.poll(&mut events, Some(duration)).unwrap();
-                    events.clear();
-
+                    self.inner_loop.dispatch(Some(duration), &mut ()).unwrap();
                     let now = Instant::now();
                     if now < deadline {
                         callback(
-                            Event::NewEvents(StartCause::WaitCancelled {
-                                start,
-                                requested_resume: Some(deadline),
-                            }),
+                            crate::event::Event::NewEvents(
+                                crate::event::StartCause::WaitCancelled {
+                                    start,
+                                    requested_resume: Some(deadline),
+                                },
+                            ),
                             &self.window_target,
                             &mut control_flow,
                         );
                     } else {
                         callback(
-                            Event::NewEvents(StartCause::ResumeTimeReached {
-                                start,
-                                requested_resume: deadline,
-                            }),
+                            crate::event::Event::NewEvents(
+                                crate::event::StartCause::ResumeTimeReached {
+                                    start,
+                                    requested_resume: deadline,
+                                },
+                            ),
                             &self.window_target,
                             &mut control_flow,
                         );
@@ -619,7 +615,11 @@ impl<T: 'static> EventLoop<T> {
             }
         }
 
-        callback(Event::LoopDestroyed, &self.window_target, &mut control_flow);
+        callback(
+            crate::event::Event::LoopDestroyed,
+            &self.window_target,
+            &mut control_flow,
+        );
     }
 
     pub fn primary_monitor(&self) -> MonitorHandle {
@@ -646,44 +646,12 @@ impl<T> EventLoopWindowTarget<T> {
  */
 
 impl<T> EventLoop<T> {
-    fn redraw_triggers<F>(&mut self, mut callback: F)
-    where
-        F: FnMut(WindowId, &RootELW<T>),
-    {
+    fn post_dispatch_triggers(&mut self) {
+        let mut sink = self.sink.lock().unwrap();
         let window_target = match self.window_target.p {
             crate::platform_impl::EventLoopWindowTarget::Wayland(ref wt) => wt,
             _ => unreachable!(),
         };
-        window_target.store.lock().unwrap().for_each_redraw_trigger(
-            |refresh, frame_refresh, wid, frame| {
-                if let Some(frame) = frame {
-                    if frame_refresh {
-                        frame.refresh();
-                        if !refresh {
-                            frame.surface().commit()
-                        }
-                    }
-                }
-                if refresh {
-                    callback(wid, &self.window_target);
-                }
-            },
-        )
-    }
-
-    fn post_dispatch_triggers<F>(&mut self, mut callback: F, control_flow: &mut ControlFlow)
-    where
-        F: FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
-    {
-        let window_target = match self.window_target.p {
-            crate::platform_impl::EventLoopWindowTarget::Wayland(ref wt) => wt,
-            _ => unreachable!(),
-        };
-
-        let mut callback = |event: Event<'_, T>| {
-            sticky_exit_callback(event, &self.window_target, control_flow, &mut callback);
-        };
-
         // prune possible dead windows
         {
             let mut cleanup_needed = window_target.cleanup_needed.lock().unwrap();
@@ -691,83 +659,65 @@ impl<T> EventLoop<T> {
                 let pruned = window_target.store.lock().unwrap().cleanup();
                 *cleanup_needed = false;
                 for wid in pruned {
-                    callback(Event::WindowEvent {
-                        window_id: crate::window::WindowId(
-                            crate::platform_impl::WindowId::Wayland(wid),
-                        ),
-                        event: WindowEvent::Destroyed,
-                    });
+                    sink.send_window_event(crate::event::WindowEvent::Destroyed, wid);
                 }
             }
         }
         // process pending resize/refresh
-        window_target.store.lock().unwrap().for_each(|window| {
-            let window_id =
-                crate::window::WindowId(crate::platform_impl::WindowId::Wayland(window.wid));
-            if let Some(frame) = window.frame {
-                if let Some((w, h)) = window.newsize {
-                    // mutter (GNOME Wayland) relies on `set_geometry` to reposition window in case
-                    // it overlaps mutter's `bounding box`, so we can't avoid this resize call,
-                    // which calls `set_geometry` under the hood, for now.
-                    frame.resize(w, h);
-                    frame.refresh();
-
-                    // Don't send resize event downstream if the new size is identical to the
-                    // current one.
-                    if (w, h) != *window.size {
-                        let logical_size = crate::dpi::LogicalSize::new(w as f64, h as f64);
-                        let physical_size = logical_size
-                            .to_physical(window.new_dpi.unwrap_or(window.prev_dpi) as f64);
-
-                        callback(Event::WindowEvent {
-                            window_id,
-                            event: WindowEvent::Resized(physical_size),
-                        });
-                        *window.size = (w, h);
+        window_target.store.lock().unwrap().for_each(
+            |newsize,
+             size,
+             new_dpi,
+             refresh,
+             frame_refresh,
+             closed,
+             grab_cursor,
+             surface,
+             wid,
+             frame| {
+                if let Some(frame) = frame {
+                    if let Some(newsize) = newsize {
+                        // Drop resize events equaled to the current size
+                        if newsize != *size {
+                            let (w, h) = newsize;
+                            frame.resize(w, h);
+                            frame.refresh();
+                            let logical_size = crate::dpi::LogicalSize::new(w as f64, h as f64);
+                            sink.send_window_event(
+                                crate::event::WindowEvent::Resized(logical_size),
+                                wid,
+                            );
+                            *size = (w, h);
+                        } else {
+                            // Refresh csd, etc, otherwise
+                            frame.refresh();
+                        }
+                    } else if frame_refresh {
+                        frame.refresh();
+                        if !refresh {
+                            frame.surface().commit()
+                        }
                     }
                 }
-
-                if let Some(dpi) = window.new_dpi {
-                    let dpi = dpi as f64;
-                    let logical_size = LogicalSize::<f64>::from(*window.size);
-                    let mut new_inner_size = logical_size.to_physical(dpi);
-
-                    callback(Event::WindowEvent {
-                        window_id,
-                        event: WindowEvent::ScaleFactorChanged {
-                            scale_factor: dpi,
-                            new_inner_size: &mut new_inner_size,
-                        },
-                    });
-
-                    let (w, h) = new_inner_size.to_logical::<u32>(dpi).into();
-                    frame.resize(w, h);
-                    *window.size = (w, h);
+                if let Some(dpi) = new_dpi {
+                    sink.send_window_event(
+                        crate::event::WindowEvent::HiDpiFactorChanged(dpi as f64),
+                        wid,
+                    );
+                }
+                if refresh {
+                    sink.send_window_event(crate::event::WindowEvent::RedrawRequested, wid);
+                }
+                if closed {
+                    sink.send_window_event(crate::event::WindowEvent::CloseRequested, wid);
                 }
-            }
-            if window.closed {
-                callback(Event::WindowEvent {
-                    window_id,
-                    event: WindowEvent::CloseRequested,
-                });
-            }
 
-            if let Some(grab_cursor) = window.grab_cursor {
-                let surface = if grab_cursor {
-                    Some(window.surface)
-                } else {
-                    None
-                };
-                self.cursor_manager.lock().unwrap().grab_pointer(surface);
-            }
-        })
-    }
-}
-
-fn get_target<T>(target: &RootELW<T>) -> &EventLoopWindowTarget<T> {
-    match target.p {
-        crate::platform_impl::EventLoopWindowTarget::Wayland(ref wt) => wt,
-        _ => unreachable!(),
+                if let Some(grab_cursor) = grab_cursor {
+                    let surface = if grab_cursor { Some(surface) } else { None };
+                    self.cursor_manager.lock().unwrap().grab_pointer(surface);
+                }
+            },
+        )
     }
 }
 
@@ -775,16 +725,17 @@ fn get_target<T>(target: &RootELW<T>) -> &EventLoopWindowTarget<T> {
  * Wayland protocol implementations
  */
 
-struct SeatManager {
-    sink: EventsSink,
+struct SeatManager<T: 'static> {
+    sink: Arc<Mutex<WindowEventsSink<T>>>,
     store: Arc<Mutex<WindowStore>>,
     seats: Arc<Mutex<Vec<(u32, wl_seat::WlSeat)>>>,
+    kbd_sender: ::calloop::channel::Sender<crate::event::Event<()>>,
     relative_pointer_manager_proxy: Rc<RefCell<Option<ZwpRelativePointerManagerV1>>>,
     pointer_constraints_proxy: Arc<Mutex<Option<ZwpPointerConstraintsV1>>>,
     cursor_manager: Arc<Mutex<CursorManager>>,
 }
 
-impl SeatManager {
+impl<T: 'static> SeatManager<T> {
     fn add_seat(&mut self, id: u32, version: u32, registry: wl_registry::WlRegistry) {
         use std::cmp::min;
 
@@ -796,6 +747,7 @@ impl SeatManager {
             relative_pointer_manager_proxy: self.relative_pointer_manager_proxy.clone(),
             keyboard: None,
             touch: None,
+            kbd_sender: self.kbd_sender.clone(),
             modifiers_tracker: Arc::new(Mutex::new(ModifiersState::default())),
             cursor_manager: self.cursor_manager.clone(),
         };
@@ -819,9 +771,10 @@ impl SeatManager {
     }
 }
 
-struct SeatData {
-    sink: EventsSink,
+struct SeatData<T> {
+    sink: Arc<Mutex<WindowEventsSink<T>>>,
     store: Arc<Mutex<WindowStore>>,
+    kbd_sender: ::calloop::channel::Sender<crate::event::Event<()>>,
     pointer: Option<wl_pointer::WlPointer>,
     relative_pointer: Option<ZwpRelativePointerV1>,
     relative_pointer_manager_proxy: Rc<RefCell<Option<ZwpRelativePointerManagerV1>>>,
@@ -831,7 +784,7 @@ struct SeatData {
     cursor_manager: Arc<Mutex<CursorManager>>,
 }
 
-impl SeatData {
+impl<T: 'static> SeatData<T> {
     fn receive(&mut self, evt: wl_seat::Event, seat: wl_seat::WlSeat) {
         match evt {
             wl_seat::Event::Name { .. } => (),
@@ -877,7 +830,7 @@ impl SeatData {
                 if capabilities.contains(wl_seat::Capability::Keyboard) && self.keyboard.is_none() {
                     self.keyboard = Some(super::keyboard::init_keyboard(
                         &seat,
-                        self.sink.clone(),
+                        self.kbd_sender.clone(),
                         self.modifiers_tracker.clone(),
                     ))
                 }
@@ -911,7 +864,7 @@ impl SeatData {
     }
 }
 
-impl Drop for SeatData {
+impl<T> Drop for SeatData<T> {
     fn drop(&mut self) {
         if let Some(pointer) = self.pointer.take() {
             if pointer.as_ref().version() >= 3 {
@@ -945,7 +898,7 @@ pub struct VideoMode {
 
 impl VideoMode {
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.size.into()
     }
 
@@ -1005,9 +958,9 @@ impl fmt::Debug for MonitorHandle {
         struct MonitorHandle {
             name: Option<String>,
             native_identifier: u32,
-            size: PhysicalSize<u32>,
-            position: PhysicalPosition<i32>,
-            scale_factor: i32,
+            size: PhysicalSize,
+            position: PhysicalPosition,
+            hidpi_factor: i32,
         }
 
         let monitor_id_proxy = MonitorHandle {
@@ -1015,7 +968,7 @@ impl fmt::Debug for MonitorHandle {
             native_identifier: self.native_identifier(),
             size: self.size(),
             position: self.position(),
-            scale_factor: self.scale_factor(),
+            hidpi_factor: self.hidpi_factor(),
         };
 
         monitor_id_proxy.fmt(f)
@@ -1034,7 +987,7 @@ impl MonitorHandle {
         self.mgr.with_info(&self.proxy, |id, _| id).unwrap_or(0)
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         match self.mgr.with_info(&self.proxy, |_, info| {
             info.modes
                 .iter()
@@ -1047,7 +1000,7 @@ impl MonitorHandle {
         .into()
     }
 
-    pub fn position(&self) -> PhysicalPosition<i32> {
+    pub fn position(&self) -> PhysicalPosition {
         self.mgr
             .with_info(&self.proxy, |_, info| info.location)
             .unwrap_or((0, 0))
@@ -1055,7 +1008,7 @@ impl MonitorHandle {
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> i32 {
+    pub fn hidpi_factor(&self) -> i32 {
         self.mgr
             .with_info(&self.proxy, |_, info| info.scale_factor)
             .unwrap_or(1)

src/platform_impl/linux/wayland/keyboard.rs

@@ -1,6 +1,6 @@
 use std::sync::{Arc, Mutex};
 
-use super::{event_loop::EventsSink, make_wid, DeviceId};
+use super::{make_wid, DeviceId};
 use smithay_client_toolkit::{
     keyboard::{
         self, map_keyboard_auto_with_repeat, Event as KbEvent, KeyRepeatEvent, KeyRepeatKind,
@@ -9,12 +9,12 @@ use smithay_client_toolkit::{
 };
 
 use crate::event::{
-    DeviceEvent, ElementState, KeyboardInput, ModifiersState, VirtualKeyCode, WindowEvent,
+    DeviceEvent, ElementState, Event, KeyboardInput, ModifiersState, VirtualKeyCode, WindowEvent,
 };
 
 pub fn init_keyboard(
     seat: &wl_seat::WlSeat,
-    sink: EventsSink,
+    sink: ::calloop::channel::Sender<crate::event::Event<()>>,
     modifiers_tracker: Arc<Mutex<ModifiersState>>,
 ) -> wl_keyboard::WlKeyboard {
     // { variables to be captured by the closures
@@ -31,12 +31,22 @@ pub fn init_keyboard(
             match evt {
                 KbEvent::Enter { surface, .. } => {
                     let wid = make_wid(&surface);
-                    my_sink.send_window_event(WindowEvent::Focused(true), wid);
+                    my_sink
+                        .send(Event::WindowEvent {
+                            window_id: mk_root_wid(wid),
+                            event: WindowEvent::Focused(true),
+                        })
+                        .unwrap();
                     *target.lock().unwrap() = Some(wid);
                 }
                 KbEvent::Leave { surface, .. } => {
                     let wid = make_wid(&surface);
-                    my_sink.send_window_event(WindowEvent::Focused(false), wid);
+                    my_sink
+                        .send(Event::WindowEvent {
+                            window_id: mk_root_wid(wid),
+                            event: WindowEvent::Focused(false),
+                        })
+                        .unwrap();
                     *target.lock().unwrap() = None;
                 }
                 KbEvent::Key {
@@ -53,29 +63,32 @@ pub fn init_keyboard(
                             _ => unreachable!(),
                         };
                         let vkcode = key_to_vkey(rawkey, keysym);
-                        my_sink.send_window_event(
-                            #[allow(deprecated)]
-                            WindowEvent::KeyboardInput {
-                                device_id: crate::event::DeviceId(
-                                    crate::platform_impl::DeviceId::Wayland(DeviceId),
-                                ),
-                                input: KeyboardInput {
-                                    state,
-                                    scancode: rawkey,
-                                    virtual_keycode: vkcode,
-                                    modifiers: modifiers_tracker.lock().unwrap().clone(),
+                        my_sink
+                            .send(Event::WindowEvent {
+                                window_id: mk_root_wid(wid),
+                                event: WindowEvent::KeyboardInput {
+                                    device_id: device_id(),
+                                    input: KeyboardInput {
+                                        state,
+                                        scancode: rawkey,
+                                        virtual_keycode: vkcode,
+                                        modifiers: modifiers_tracker.lock().unwrap().clone(),
+                                    },
                                 },
-                                is_synthetic: false,
-                            },
-                            wid,
-                        );
+                            })
+                            .unwrap();
                         // send char event only on key press, not release
                         if let ElementState::Released = state {
                             return;
                         }
                         if let Some(txt) = utf8 {
                             for chr in txt.chars() {
-                                my_sink.send_window_event(WindowEvent::ReceivedCharacter(chr), wid);
+                                my_sink
+                                    .send(Event::WindowEvent {
+                                        window_id: mk_root_wid(wid),
+                                        event: WindowEvent::ReceivedCharacter(chr),
+                                    })
+                                    .unwrap();
                             }
                         }
                     }
@@ -88,7 +101,12 @@ pub fn init_keyboard(
 
                     *modifiers_tracker.lock().unwrap() = modifiers;
 
-                    my_sink.send_device_event(DeviceEvent::ModifiersChanged(modifiers), DeviceId);
+                    my_sink
+                        .send(Event::DeviceEvent {
+                            device_id: device_id(),
+                            event: DeviceEvent::ModifiersChanged { modifiers },
+                        })
+                        .unwrap();
                 }
             }
         },
@@ -96,25 +114,28 @@ pub fn init_keyboard(
             if let Some(wid) = *repeat_target.lock().unwrap() {
                 let state = ElementState::Pressed;
                 let vkcode = key_to_vkey(repeat_event.rawkey, repeat_event.keysym);
-                repeat_sink.send_window_event(
-                    #[allow(deprecated)]
-                    WindowEvent::KeyboardInput {
-                        device_id: crate::event::DeviceId(crate::platform_impl::DeviceId::Wayland(
-                            DeviceId,
-                        )),
-                        input: KeyboardInput {
-                            state,
-                            scancode: repeat_event.rawkey,
-                            virtual_keycode: vkcode,
-                            modifiers: my_modifiers.lock().unwrap().clone(),
+                repeat_sink
+                    .send(Event::WindowEvent {
+                        window_id: mk_root_wid(wid),
+                        event: WindowEvent::KeyboardInput {
+                            device_id: device_id(),
+                            input: KeyboardInput {
+                                state,
+                                scancode: repeat_event.rawkey,
+                                virtual_keycode: vkcode,
+                                modifiers: my_modifiers.lock().unwrap().clone(),
+                            },
                         },
-                        is_synthetic: false,
-                    },
-                    wid,
-                );
+                    })
+                    .unwrap();
                 if let Some(txt) = repeat_event.utf8 {
                     for chr in txt.chars() {
-                        repeat_sink.send_window_event(WindowEvent::ReceivedCharacter(chr), wid);
+                        repeat_sink
+                            .send(Event::WindowEvent {
+                                window_id: mk_root_wid(wid),
+                                event: WindowEvent::ReceivedCharacter(chr),
+                            })
+                            .unwrap();
                     }
                 }
             }
@@ -141,12 +162,22 @@ pub fn init_keyboard(
                     move |evt, _| match evt {
                         wl_keyboard::Event::Enter { surface, .. } => {
                             let wid = make_wid(&surface);
-                            my_sink.send_window_event(WindowEvent::Focused(true), wid);
+                            my_sink
+                                .send(Event::WindowEvent {
+                                    window_id: mk_root_wid(wid),
+                                    event: WindowEvent::Focused(true),
+                                })
+                                .unwrap();
                             target = Some(wid);
                         }
                         wl_keyboard::Event::Leave { surface, .. } => {
                             let wid = make_wid(&surface);
-                            my_sink.send_window_event(WindowEvent::Focused(false), wid);
+                            my_sink
+                                .send(Event::WindowEvent {
+                                    window_id: mk_root_wid(wid),
+                                    event: WindowEvent::Focused(false),
+                                })
+                                .unwrap();
                             target = None;
                         }
                         wl_keyboard::Event::Key { key, state, .. } => {
@@ -156,22 +187,20 @@ pub fn init_keyboard(
                                     wl_keyboard::KeyState::Released => ElementState::Released,
                                     _ => unreachable!(),
                                 };
-                                my_sink.send_window_event(
-                                    #[allow(deprecated)]
-                                    WindowEvent::KeyboardInput {
-                                        device_id: crate::event::DeviceId(
-                                            crate::platform_impl::DeviceId::Wayland(DeviceId),
-                                        ),
-                                        input: KeyboardInput {
-                                            state,
-                                            scancode: key,
-                                            virtual_keycode: None,
-                                            modifiers: ModifiersState::default(),
+                                my_sink
+                                    .send(Event::WindowEvent {
+                                        window_id: mk_root_wid(wid),
+                                        event: WindowEvent::KeyboardInput {
+                                            device_id: device_id(),
+                                            input: KeyboardInput {
+                                                state,
+                                                scancode: key,
+                                                virtual_keycode: None,
+                                                modifiers: ModifiersState::default(),
+                                            },
                                         },
-                                        is_synthetic: false,
-                                    },
-                                    wid,
-                                );
+                                    })
+                                    .unwrap();
                             }
                         }
                         _ => (),
@@ -372,11 +401,19 @@ fn keysym_to_vkey(keysym: u32) -> Option<VirtualKeyCode> {
 
 impl ModifiersState {
     pub(crate) fn from_wayland(mods: keyboard::ModifiersState) -> ModifiersState {
-        let mut m = ModifiersState::empty();
-        m.set(ModifiersState::SHIFT, mods.shift);
-        m.set(ModifiersState::CTRL, mods.ctrl);
-        m.set(ModifiersState::ALT, mods.alt);
-        m.set(ModifiersState::LOGO, mods.logo);
-        m
+        ModifiersState {
+            shift: mods.shift,
+            ctrl: mods.ctrl,
+            alt: mods.alt,
+            logo: mods.logo,
+        }
     }
 }
+
+fn device_id() -> crate::event::DeviceId {
+    crate::event::DeviceId(crate::platform_impl::DeviceId::Wayland(DeviceId))
+}
+
+fn mk_root_wid(wid: crate::platform_impl::wayland::WindowId) -> crate::window::WindowId {
+    crate::window::WindowId(crate::platform_impl::WindowId::Wayland(wid))
+}

src/platform_impl/linux/wayland/mod.rs

@@ -2,7 +2,10 @@
            target_os = "netbsd", target_os = "openbsd"))]
 
 pub use self::{
-    event_loop::{EventLoop, EventLoopProxy, EventLoopWindowTarget, MonitorHandle, VideoMode},
+    event_loop::{
+        EventLoop, EventLoopProxy, EventLoopWindowTarget, MonitorHandle, VideoMode,
+        WindowEventsSink,
+    },
     window::Window,
 };
 

src/platform_impl/linux/wayland/pointer.rs

@@ -6,7 +6,7 @@ use crate::event::{
 };
 
 use super::{
-    event_loop::{CursorManager, EventsSink},
+    event_loop::{CursorManager, WindowEventsSink},
     window::WindowStore,
     DeviceId,
 };
@@ -28,9 +28,9 @@ use smithay_client_toolkit::reexports::protocols::unstable::pointer_constraints:
 
 use smithay_client_toolkit::reexports::client::protocol::wl_surface::WlSurface;
 
-pub fn implement_pointer(
+pub fn implement_pointer<T: 'static>(
     seat: &wl_seat::WlSeat,
-    sink: EventsSink,
+    sink: Arc<Mutex<WindowEventsSink<T>>>,
     store: Arc<Mutex<WindowStore>>,
     modifiers_tracker: Arc<Mutex<ModifiersState>>,
     cursor_manager: Arc<Mutex<CursorManager>>,
@@ -43,6 +43,7 @@ pub fn implement_pointer(
 
         pointer.implement_closure(
             move |evt, pointer| {
+                let mut sink = sink.lock().unwrap();
                 let store = store.lock().unwrap();
                 let mut cursor_manager = cursor_manager.lock().unwrap();
                 match evt {
@@ -55,13 +56,6 @@ pub fn implement_pointer(
                         let wid = store.find_wid(&surface);
                         if let Some(wid) = wid {
                             mouse_focus = Some(wid);
-
-                            // Reload cursor style only when we enter winit's surface. Calling
-                            // this function every time on `PtrEvent::Enter` could interfere with
-                            // SCTK CSD handling, since it changes cursor icons when you hover
-                            // cursor over the window borders.
-                            cursor_manager.reload_cursor_style();
-
                             sink.send_window_event(
                                 WindowEvent::CursorEntered {
                                     device_id: crate::event::DeviceId(
@@ -81,6 +75,8 @@ pub fn implement_pointer(
                                 wid,
                             );
                         }
+
+                        cursor_manager.reload_cursor_style();
                     }
                     PtrEvent::Leave { surface, .. } => {
                         mouse_focus = None;
@@ -241,18 +237,20 @@ pub fn implement_pointer(
     .unwrap()
 }
 
-pub fn implement_relative_pointer(
-    sink: EventsSink,
+pub fn implement_relative_pointer<T: 'static>(
+    sink: Arc<Mutex<WindowEventsSink<T>>>,
     pointer: &WlPointer,
     manager: &ZwpRelativePointerManagerV1,
 ) -> Result<ZwpRelativePointerV1, ()> {
     manager.get_relative_pointer(pointer, |rel_pointer| {
         rel_pointer.implement_closure(
-            move |evt, _rel_pointer| match evt {
-                Event::RelativeMotion { dx, dy, .. } => {
-                    sink.send_device_event(DeviceEvent::MouseMotion { delta: (dx, dy) }, DeviceId)
+            move |evt, _rel_pointer| {
+                let mut sink = sink.lock().unwrap();
+                match evt {
+                    Event::RelativeMotion { dx, dy, .. } => sink
+                        .send_device_event(DeviceEvent::MouseMotion { delta: (dx, dy) }, DeviceId),
+                    _ => unreachable!(),
                 }
-                _ => unreachable!(),
             },
             (),
         )

src/platform_impl/linux/wayland/touch.rs

@@ -2,7 +2,7 @@ use std::sync::{Arc, Mutex};
 
 use crate::event::{TouchPhase, WindowEvent};
 
-use super::{event_loop::EventsSink, window::WindowStore, DeviceId, WindowId};
+use super::{event_loop::WindowEventsSink, window::WindowStore, DeviceId, WindowId};
 
 use smithay_client_toolkit::reexports::client::protocol::{
     wl_seat,
@@ -15,15 +15,16 @@ struct TouchPoint {
     id: i32,
 }
 
-pub(crate) fn implement_touch(
+pub(crate) fn implement_touch<T: 'static>(
     seat: &wl_seat::WlSeat,
-    sink: EventsSink,
+    sink: Arc<Mutex<WindowEventsSink<T>>>,
     store: Arc<Mutex<WindowStore>>,
 ) -> WlTouch {
     let mut pending_ids = Vec::new();
     seat.get_touch(|touch| {
         touch.implement_closure(
             move |evt, _| {
+                let mut sink = sink.lock().unwrap();
                 let store = store.lock().unwrap();
                 match evt {
                     TouchEvent::Down {

src/platform_impl/linux/wayland/window.rs

@@ -6,7 +6,7 @@ use std::{
 };
 
 use crate::{
-    dpi::{LogicalSize, PhysicalPosition, PhysicalSize, Position, Size},
+    dpi::{LogicalPosition, LogicalSize},
     error::{ExternalError, NotSupportedError, OsError as RootOsError},
     monitor::MonitorHandle as RootMonitorHandle,
     platform_impl::{
@@ -49,7 +49,11 @@ impl Window {
         attributes: WindowAttributes,
         pl_attribs: PlAttributes,
     ) -> Result<Window, RootOsError> {
-        // Create the surface first to get initial DPI
+        let (width, height) = attributes.inner_size.map(Into::into).unwrap_or((800, 600));
+        // Create the window
+        let size = Arc::new(Mutex::new((width, height)));
+        let fullscreen = Arc::new(Mutex::new(false));
+
         let window_store = evlp.store.clone();
         let cursor_manager = evlp.cursor_manager.clone();
         let surface = evlp.env.create_surface(move |dpi, surface| {
@@ -57,18 +61,7 @@ impl Window {
             surface.set_buffer_scale(dpi);
         });
 
-        let dpi = get_dpi_factor(&surface) as f64;
-        let (width, height) = attributes
-            .inner_size
-            .map(|size| size.to_logical::<f64>(dpi).into())
-            .unwrap_or((800, 600));
-
-        // Create the window
-        let size = Arc::new(Mutex::new((width, height)));
-        let fullscreen = Arc::new(Mutex::new(false));
-
         let window_store = evlp.store.clone();
-
         let my_surface = surface.clone();
         let mut frame = SWindow::<ConceptFrame>::init_from_env(
             &evlp.env,
@@ -144,16 +137,8 @@ impl Window {
         frame.set_title(attributes.title);
 
         // min-max dimensions
-        frame.set_min_size(
-            attributes
-                .min_inner_size
-                .map(|size| size.to_logical::<f64>(dpi).into()),
-        );
-        frame.set_max_size(
-            attributes
-                .max_inner_size
-                .map(|size| size.to_logical::<f64>(dpi).into()),
-        );
+        frame.set_min_size(attributes.min_inner_size.map(Into::into));
+        frame.set_max_size(attributes.max_inner_size.map(Into::into));
 
         let kill_switch = Arc::new(Mutex::new(false));
         let need_frame_refresh = Arc::new(Mutex::new(true));
@@ -206,24 +191,22 @@ impl Window {
     }
 
     #[inline]
-    pub fn outer_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn outer_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         Err(NotSupportedError::new())
     }
 
     #[inline]
-    pub fn inner_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn inner_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         Err(NotSupportedError::new())
     }
 
     #[inline]
-    pub fn set_outer_position(&self, _pos: Position) {
+    pub fn set_outer_position(&self, _pos: LogicalPosition) {
         // Not possible with wayland
     }
 
-    pub fn inner_size(&self) -> PhysicalSize<u32> {
-        let dpi = self.scale_factor() as f64;
-        let size = LogicalSize::<f64>::from(*self.size.lock().unwrap());
-        size.to_physical(dpi)
+    pub fn inner_size(&self) -> LogicalSize {
+        self.size.lock().unwrap().clone().into()
     }
 
     pub fn request_redraw(&self) {
@@ -231,39 +214,34 @@ impl Window {
     }
 
     #[inline]
-    pub fn outer_size(&self) -> PhysicalSize<u32> {
-        let dpi = self.scale_factor() as f64;
+    pub fn outer_size(&self) -> LogicalSize {
         let (w, h) = self.size.lock().unwrap().clone();
         // let (w, h) = super::wayland_window::add_borders(w as i32, h as i32);
-        let size = LogicalSize::<f64>::from((w, h));
-        size.to_physical(dpi)
+        (w, h).into()
     }
 
     #[inline]
     // NOTE: This will only resize the borders, the contents must be updated by the user
-    pub fn set_inner_size(&self, size: Size) {
-        let dpi = self.scale_factor() as f64;
-        let (w, h) = size.to_logical::<u32>(dpi).into();
+    pub fn set_inner_size(&self, size: LogicalSize) {
+        let (w, h) = size.into();
         self.frame.lock().unwrap().resize(w, h);
         *(self.size.lock().unwrap()) = (w, h);
     }
 
     #[inline]
-    pub fn set_min_inner_size(&self, dimensions: Option<Size>) {
-        let dpi = self.scale_factor() as f64;
+    pub fn set_min_inner_size(&self, dimensions: Option<LogicalSize>) {
         self.frame
             .lock()
             .unwrap()
-            .set_min_size(dimensions.map(|dim| dim.to_logical::<f64>(dpi).into()));
+            .set_min_size(dimensions.map(Into::into));
     }
 
     #[inline]
-    pub fn set_max_inner_size(&self, dimensions: Option<Size>) {
-        let dpi = self.scale_factor() as f64;
+    pub fn set_max_inner_size(&self, dimensions: Option<LogicalSize>) {
         self.frame
             .lock()
             .unwrap()
-            .set_max_size(dimensions.map(|dim| dim.to_logical::<f64>(dpi).into()));
+            .set_max_size(dimensions.map(Into::into));
     }
 
     #[inline]
@@ -272,7 +250,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> i32 {
+    pub fn hidpi_factor(&self) -> i32 {
         get_dpi_factor(&self.surface)
     }
 
@@ -281,13 +259,6 @@ impl Window {
         *(self.need_frame_refresh.lock().unwrap()) = true;
     }
 
-    pub fn set_minimized(&self, minimized: bool) {
-        // An app cannot un-minimize itself on Wayland
-        if minimized {
-            self.frame.lock().unwrap().set_minimized();
-        }
-    }
-
     pub fn set_maximized(&self, maximized: bool) {
         if maximized {
             self.frame.lock().unwrap().set_maximized();
@@ -347,7 +318,7 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_cursor_position(&self, _pos: Position) -> Result<(), ExternalError> {
+    pub fn set_cursor_position(&self, _pos: LogicalPosition) -> Result<(), ExternalError> {
         Err(ExternalError::NotSupported(NotSupportedError::new()))
     }
 
@@ -397,7 +368,6 @@ impl Drop for Window {
 
 struct InternalWindow {
     surface: wl_surface::WlSurface,
-    // TODO: CONVERT TO LogicalSize<u32>s
     newsize: Option<(u32, u32)>,
     size: Arc<Mutex<(u32, u32)>>,
     need_refresh: Arc<Mutex<bool>>,
@@ -415,18 +385,6 @@ pub struct WindowStore {
     windows: Vec<InternalWindow>,
 }
 
-pub struct WindowStoreForEach<'a> {
-    pub newsize: Option<(u32, u32)>,
-    pub size: &'a mut (u32, u32),
-    pub prev_dpi: i32,
-    pub new_dpi: Option<i32>,
-    pub closed: bool,
-    pub grab_cursor: Option<bool>,
-    pub surface: &'a wl_surface::WlSurface,
-    pub wid: WindowId,
-    pub frame: Option<&'a mut SWindow<ConceptFrame>>,
-}
-
 impl WindowStore {
     pub fn new() -> WindowStore {
         WindowStore {
@@ -476,22 +434,34 @@ impl WindowStore {
 
     pub fn for_each<F>(&mut self, mut f: F)
     where
-        F: FnMut(WindowStoreForEach<'_>),
+        F: FnMut(
+            Option<(u32, u32)>,
+            &mut (u32, u32),
+            Option<i32>,
+            bool,
+            bool,
+            bool,
+            Option<bool>,
+            &wl_surface::WlSurface,
+            WindowId,
+            Option<&mut SWindow<ConceptFrame>>,
+        ),
     {
         for window in &mut self.windows {
             let opt_arc = window.frame.upgrade();
             let mut opt_mutex_lock = opt_arc.as_ref().map(|m| m.lock().unwrap());
-            f(WindowStoreForEach {
-                newsize: window.newsize.take(),
-                size: &mut *(window.size.lock().unwrap()),
-                prev_dpi: window.current_dpi,
-                new_dpi: window.new_dpi,
-                closed: window.closed,
-                grab_cursor: window.cursor_grab_changed.lock().unwrap().take(),
-                surface: &window.surface,
-                wid: make_wid(&window.surface),
-                frame: opt_mutex_lock.as_mut().map(|m| &mut **m),
-            });
+            f(
+                window.newsize.take(),
+                &mut *(window.size.lock().unwrap()),
+                window.new_dpi,
+                replace(&mut *window.need_refresh.lock().unwrap(), false),
+                replace(&mut *window.need_frame_refresh.lock().unwrap(), false),
+                window.closed,
+                window.cursor_grab_changed.lock().unwrap().take(),
+                &window.surface,
+                make_wid(&window.surface),
+                opt_mutex_lock.as_mut().map(|m| &mut **m),
+            );
             if let Some(dpi) = window.new_dpi.take() {
                 window.current_dpi = dpi;
             }
@@ -499,20 +469,4 @@ impl WindowStore {
             window.closed = false;
         }
     }
-
-    pub fn for_each_redraw_trigger<F>(&mut self, mut f: F)
-    where
-        F: FnMut(bool, bool, WindowId, Option<&mut SWindow<ConceptFrame>>),
-    {
-        for window in &mut self.windows {
-            let opt_arc = window.frame.upgrade();
-            let mut opt_mutex_lock = opt_arc.as_ref().map(|m| m.lock().unwrap());
-            f(
-                replace(&mut *window.need_refresh.lock().unwrap(), false),
-                replace(&mut *window.need_frame_refresh.lock().unwrap(), false),
-                make_wid(&window.surface),
-                opt_mutex_lock.as_mut().map(|m| &mut **m),
-            );
-        }
-    }
 }

src/platform_impl/linux/x11/event_processor.rs

@@ -1,4 +1,4 @@
-use std::{cell::RefCell, collections::HashMap, rc::Rc, slice, sync::Arc};
+use std::{cell::RefCell, collections::HashMap, ptr, rc::Rc, slice};
 
 use libc::{c_char, c_int, c_long, c_uint, c_ulong};
 
@@ -11,10 +11,8 @@ use super::{
 use util::modifiers::{ModifierKeyState, ModifierKeymap};
 
 use crate::{
-    dpi::{PhysicalPosition, PhysicalSize},
-    event::{
-        DeviceEvent, ElementState, Event, KeyboardInput, ModifiersState, TouchPhase, WindowEvent,
-    },
+    dpi::{LogicalPosition, LogicalSize},
+    event::{DeviceEvent, Event, KeyboardInput, ModifiersState, WindowEvent},
     event_loop::EventLoopWindowTarget as RootELW,
 };
 
@@ -27,9 +25,6 @@ pub(super) struct EventProcessor<T: 'static> {
     pub(super) target: Rc<RootELW<T>>,
     pub(super) mod_keymap: ModifierKeymap,
     pub(super) device_mod_state: ModifierKeyState,
-    // Number of touch events currently in progress
-    pub(super) num_touch: u32,
-    pub(super) first_touch: Option<u64>,
 }
 
 impl<T: 'static> EventProcessor<T> {
@@ -45,7 +40,7 @@ impl<T: 'static> EventProcessor<T> {
 
     fn with_window<F, Ret>(&self, window_id: ffi::Window, callback: F) -> Option<Ret>
     where
-        F: Fn(&Arc<UnownedWindow>) -> Ret,
+        F: Fn(&UnownedWindow) -> Ret,
     {
         let mut deleted = false;
         let window_id = WindowId(window_id);
@@ -59,7 +54,7 @@ impl<T: 'static> EventProcessor<T> {
                 deleted = arc.is_none();
                 arc
             })
-            .map(|window| callback(&window));
+            .map(|window| callback(&*window));
         if deleted {
             // Garbage collection
             wt.windows.borrow_mut().remove(&window_id);
@@ -107,7 +102,7 @@ impl<T: 'static> EventProcessor<T> {
 
     pub(super) fn process_event<F>(&mut self, xev: &mut ffi::XEvent, mut callback: F)
     where
-        F: FnMut(Event<'_, T>),
+        F: FnMut(Event<T>),
     {
         let wt = get_xtarget(&self.target);
         // XFilterEvent tells us when an event has been discarded by the input method.
@@ -137,7 +132,7 @@ impl<T: 'static> EventProcessor<T> {
                             let device_id = mkdid(util::VIRTUAL_CORE_KEYBOARD);
                             callback(Event::DeviceEvent {
                                 device_id,
-                                event: DeviceEvent::ModifiersChanged(modifiers),
+                                event: DeviceEvent::ModifiersChanged { modifiers },
                             });
                         }
                     }
@@ -321,11 +316,16 @@ impl<T: 'static> EventProcessor<T> {
             }
 
             ffi::ConfigureNotify => {
+                #[derive(Debug, Default)]
+                struct Events {
+                    resized: Option<WindowEvent>,
+                    moved: Option<WindowEvent>,
+                    dpi_changed: Option<WindowEvent>,
+                }
+
                 let xev: &ffi::XConfigureEvent = xev.as_ref();
                 let xwindow = xev.window;
-                let window_id = mkwid(xwindow);
-
-                if let Some(window) = self.with_window(xwindow, Arc::clone) {
+                let events = self.with_window(xwindow, |window| {
                     // So apparently...
                     // `XSendEvent` (synthetic `ConfigureNotify`) -> position relative to root
                     // `XConfigureNotify` (real `ConfigureNotify`) -> position relative to parent
@@ -339,6 +339,7 @@ impl<T: 'static> EventProcessor<T> {
                     let new_inner_size = (xev.width as u32, xev.height as u32);
                     let new_inner_position = (xev.x as i32, xev.y as i32);
 
+                    let mut monitor = window.current_monitor(); // This must be done *before* locking!
                     let mut shared_state_lock = window.shared_state.lock();
 
                     let (mut resized, moved) = {
@@ -368,6 +369,8 @@ impl<T: 'static> EventProcessor<T> {
                         (resized, moved)
                     };
 
+                    let mut events = Events::default();
+
                     let new_outer_position = if moved || shared_state_lock.position.is_none() {
                         // We need to convert client area position to window position.
                         let frame_extents = shared_state_lock
@@ -384,10 +387,9 @@ impl<T: 'static> EventProcessor<T> {
                             .inner_pos_to_outer(new_inner_position.0, new_inner_position.1);
                         shared_state_lock.position = Some(outer);
                         if moved {
-                            callback(Event::WindowEvent {
-                                window_id,
-                                event: WindowEvent::Moved(outer.into()),
-                            });
+                            let logical_position =
+                                LogicalPosition::from_physical(outer, monitor.hidpi_factor);
+                            events.moved = Some(WindowEvent::Moved(logical_position));
                         }
                         outer
                     } else {
@@ -399,51 +401,34 @@ impl<T: 'static> EventProcessor<T> {
                         // resizing by dragging across monitors *without* dropping the window.
                         let (width, height) = shared_state_lock
                             .dpi_adjusted
-                            .unwrap_or_else(|| (xev.width as u32, xev.height as u32));
+                            .unwrap_or_else(|| (xev.width as f64, xev.height as f64));
 
-                        let last_scale_factor = shared_state_lock.last_monitor.scale_factor;
-                        let new_scale_factor = {
+                        let last_hidpi_factor = shared_state_lock.last_monitor.hidpi_factor;
+                        let new_hidpi_factor = {
                             let window_rect = util::AaRect::new(new_outer_position, new_inner_size);
-                            let monitor = wt.xconn.get_monitor_for_window(Some(window_rect));
+                            monitor = wt.xconn.get_monitor_for_window(Some(window_rect));
+                            let new_hidpi_factor = monitor.hidpi_factor;
 
-                            if monitor.is_dummy() {
-                                // Avoid updating monitor using a dummy monitor handle
-                                last_scale_factor
-                            } else {
+                            // Avoid caching an invalid dummy monitor handle
+                            if monitor.id != 0 {
                                 shared_state_lock.last_monitor = monitor.clone();
-                                monitor.scale_factor
                             }
+                            new_hidpi_factor
                         };
-                        if last_scale_factor != new_scale_factor {
-                            let (new_width, new_height) = window.adjust_for_dpi(
-                                last_scale_factor,
-                                new_scale_factor,
+                        if last_hidpi_factor != new_hidpi_factor {
+                            events.dpi_changed =
+                                Some(WindowEvent::HiDpiFactorChanged(new_hidpi_factor));
+                            let (new_width, new_height, flusher) = window.adjust_for_dpi(
+                                last_hidpi_factor,
+                                new_hidpi_factor,
                                 width,
                                 height,
-                                &shared_state_lock,
                             );
-
-                            let old_inner_size = PhysicalSize::new(width, height);
-                            let mut new_inner_size = PhysicalSize::new(new_width, new_height);
-
-                            callback(Event::WindowEvent {
-                                window_id,
-                                event: WindowEvent::ScaleFactorChanged {
-                                    scale_factor: new_scale_factor,
-                                    new_inner_size: &mut new_inner_size,
-                                },
-                            });
-
-                            if new_inner_size != old_inner_size {
-                                window.set_inner_size_physical(
-                                    new_inner_size.width,
-                                    new_inner_size.height,
-                                );
-                                shared_state_lock.dpi_adjusted = Some(new_inner_size.into());
-                                // if the DPI factor changed, force a resize event to ensure the logical
-                                // size is computed with the right DPI factor
-                                resized = true;
-                            }
+                            flusher.queue();
+                            shared_state_lock.dpi_adjusted = Some((new_width, new_height));
+                            // if the DPI factor changed, force a resize event to ensure the logical
+                            // size is computed with the right DPI factor
+                            resized = true;
                         }
                     }
 
@@ -452,19 +437,44 @@ impl<T: 'static> EventProcessor<T> {
                     // WMs constrain the window size, making the resize fail. This would cause an endless stream of
                     // XResizeWindow requests, making Xorg, the winit client, and the WM consume 100% of CPU.
                     if let Some(adjusted_size) = shared_state_lock.dpi_adjusted {
-                        if new_inner_size == adjusted_size || !util::wm_name_is_one_of(&["Xfwm4"]) {
+                        let rounded_size = (
+                            adjusted_size.0.round() as u32,
+                            adjusted_size.1.round() as u32,
+                        );
+                        if new_inner_size == rounded_size || !util::wm_name_is_one_of(&["Xfwm4"]) {
                             // When this finally happens, the event will not be synthetic.
                             shared_state_lock.dpi_adjusted = None;
                         } else {
-                            window.set_inner_size_physical(adjusted_size.0, adjusted_size.1);
+                            unsafe {
+                                (wt.xconn.xlib.XResizeWindow)(
+                                    wt.xconn.display,
+                                    xwindow,
+                                    rounded_size.0 as c_uint,
+                                    rounded_size.1 as c_uint,
+                                );
+                            }
                         }
                     }
 
                     if resized {
-                        callback(Event::WindowEvent {
-                            window_id,
-                            event: WindowEvent::Resized(new_inner_size.into()),
-                        });
+                        let logical_size =
+                            LogicalSize::from_physical(new_inner_size, monitor.hidpi_factor);
+                        events.resized = Some(WindowEvent::Resized(logical_size));
+                    }
+
+                    events
+                });
+
+                if let Some(events) = events {
+                    let window_id = mkwid(xwindow);
+                    if let Some(event) = events.dpi_changed {
+                        callback(Event::WindowEvent { window_id, event });
+                    }
+                    if let Some(event) = events.resized {
+                        callback(Event::WindowEvent { window_id, event });
+                    }
+                    if let Some(event) = events.moved {
+                        callback(Event::WindowEvent { window_id, event });
                     }
                 }
             }
@@ -517,14 +527,13 @@ impl<T: 'static> EventProcessor<T> {
             ffi::Expose => {
                 let xev: &ffi::XExposeEvent = xev.as_ref();
 
-                // Multiple Expose events may be received for subareas of a window.
-                // We issue `RedrawRequested` only for the last event of such a series.
-                if xev.count == 0 {
-                    let window = xev.window;
-                    let window_id = mkwid(window);
+                let window = xev.window;
+                let window_id = mkwid(window);
 
-                    callback(Event::RedrawRequested(window_id));
-                }
+                callback(Event::WindowEvent {
+                    window_id,
+                    event: WindowEvent::RedrawRequested,
+                });
             }
 
             ffi::KeyPress | ffi::KeyRelease => {
@@ -546,13 +555,22 @@ impl<T: 'static> EventProcessor<T> {
                 // value, though this should only be an issue under multiseat configurations.
                 let device = util::VIRTUAL_CORE_KEYBOARD;
                 let device_id = mkdid(device);
-                let keycode = xkev.keycode;
 
                 // When a compose sequence or IME pre-edit is finished, it ends in a KeyPress with
                 // a keycode of 0.
-                if keycode != 0 {
-                    let scancode = keycode - 8;
-                    let keysym = wt.xconn.lookup_keysym(xkev);
+                if xkev.keycode != 0 {
+                    let keysym = unsafe {
+                        let mut keysym = 0;
+                        (wt.xconn.xlib.XLookupString)(
+                            xkev,
+                            ptr::null_mut(),
+                            0,
+                            &mut keysym,
+                            ptr::null_mut(),
+                        );
+                        wt.xconn.check_errors().expect("Failed to lookup keysym");
+                        keysym
+                    };
                     let virtual_keycode = events::keysym_to_element(keysym as c_uint);
 
                     update_modifiers!(
@@ -562,18 +580,16 @@ impl<T: 'static> EventProcessor<T> {
 
                     let modifiers = self.device_mod_state.modifiers();
 
-                    #[allow(deprecated)]
                     callback(Event::WindowEvent {
                         window_id,
                         event: WindowEvent::KeyboardInput {
                             device_id,
                             input: KeyboardInput {
                                 state,
-                                scancode,
+                                scancode: xkev.keycode - 8,
                                 virtual_keycode,
                                 modifiers,
                             },
-                            is_synthetic: false,
                         },
                     });
                 }
@@ -610,7 +626,7 @@ impl<T: 'static> EventProcessor<T> {
                     ElementState::{Pressed, Released},
                     MouseButton::{Left, Middle, Other, Right},
                     MouseScrollDelta::LineDelta,
-                    Touch,
+                    Touch, TouchPhase,
                     WindowEvent::{
                         AxisMotion, CursorEntered, CursorLeft, CursorMoved, Focused, MouseInput,
                         MouseWheel,
@@ -712,17 +728,24 @@ impl<T: 'static> EventProcessor<T> {
                             util::maybe_change(&mut shared_state_lock.cursor_pos, new_cursor_pos)
                         });
                         if cursor_moved == Some(true) {
-                            let position =
-                                PhysicalPosition::new(xev.event_x as i32, xev.event_y as i32);
-
-                            callback(Event::WindowEvent {
-                                window_id,
-                                event: CursorMoved {
-                                    device_id,
-                                    position,
-                                    modifiers,
-                                },
-                            });
+                            let dpi_factor =
+                                self.with_window(xev.event, |window| window.hidpi_factor());
+                            if let Some(dpi_factor) = dpi_factor {
+                                let position = LogicalPosition::from_physical(
+                                    (xev.event_x as f64, xev.event_y as f64),
+                                    dpi_factor,
+                                );
+                                callback(Event::WindowEvent {
+                                    window_id,
+                                    event: CursorMoved {
+                                        device_id,
+                                        position,
+                                        modifiers,
+                                    },
+                                });
+                            } else {
+                                return;
+                            }
                         } else if cursor_moved.is_none() {
                             return;
                         }
@@ -812,15 +835,18 @@ impl<T: 'static> EventProcessor<T> {
                                 }
                             }
                         }
+                        callback(Event::WindowEvent {
+                            window_id,
+                            event: CursorEntered { device_id },
+                        });
 
-                        if self.window_exists(xev.event) {
-                            callback(Event::WindowEvent {
-                                window_id,
-                                event: CursorEntered { device_id },
-                            });
-
-                            let position =
-                                PhysicalPosition::new(xev.event_x as i32, xev.event_y as i32);
+                        if let Some(dpi_factor) =
+                            self.with_window(xev.event, |window| window.hidpi_factor())
+                        {
+                            let position = LogicalPosition::from_physical(
+                                (xev.event_x as f64, xev.event_y as f64),
+                                dpi_factor,
+                            );
 
                             // The mods field on this event isn't actually populated, so query the
                             // pointer device. In the future, we can likely remove this round-trip by
@@ -863,6 +889,11 @@ impl<T: 'static> EventProcessor<T> {
                     ffi::XI_FocusIn => {
                         let xev: &ffi::XIFocusInEvent = unsafe { &*(xev.data as *const _) };
 
+                        let dpi_factor =
+                            match self.with_window(xev.event, |window| window.hidpi_factor()) {
+                                Some(dpi_factor) => dpi_factor,
+                                None => return,
+                            };
                         let window_id = mkwid(xev.event);
 
                         wt.ime
@@ -875,10 +906,6 @@ impl<T: 'static> EventProcessor<T> {
                             event: Focused(true),
                         });
 
-                        let modifiers = ModifiersState::from_x11(&xev.mods);
-
-                        update_modifiers!(modifiers, None);
-
                         // The deviceid for this event is for a keyboard instead of a pointer,
                         // so we have to do a little extra work.
                         let pointer_id = self
@@ -888,20 +915,18 @@ impl<T: 'static> EventProcessor<T> {
                             .map(|device| device.attachment)
                             .unwrap_or(2);
 
-                        let position =
-                            PhysicalPosition::new(xev.event_x as i32, xev.event_y as i32);
-
+                        let position = LogicalPosition::from_physical(
+                            (xev.event_x as f64, xev.event_y as f64),
+                            dpi_factor,
+                        );
                         callback(Event::WindowEvent {
                             window_id,
                             event: CursorMoved {
                                 device_id: mkdid(pointer_id),
                                 position,
-                                modifiers,
+                                modifiers: ModifiersState::from_x11(&xev.mods),
                             },
                         });
-
-                        // Issue key press events for all pressed keys
-                        self.handle_pressed_keys(window_id, ElementState::Pressed, &mut callback);
                     }
                     ffi::XI_FocusOut => {
                         let xev: &ffi::XIFocusOutEvent = unsafe { &*(xev.data as *const _) };
@@ -913,13 +938,8 @@ impl<T: 'static> EventProcessor<T> {
                             .unfocus(xev.event)
                             .expect("Failed to unfocus input context");
 
-                        let window_id = mkwid(xev.event);
-
-                        // Issue key release events for all pressed keys
-                        self.handle_pressed_keys(window_id, ElementState::Released, &mut callback);
-
                         callback(Event::WindowEvent {
-                            window_id,
+                            window_id: mkwid(xev.event),
                             event: Focused(false),
                         })
                     }
@@ -933,26 +953,13 @@ impl<T: 'static> EventProcessor<T> {
                             ffi::XI_TouchEnd => TouchPhase::Ended,
                             _ => unreachable!(),
                         };
-                        if self.window_exists(xev.event) {
-                            let id = xev.detail as u64;
-                            let modifiers = self.device_mod_state.modifiers();
-                            let location =
-                                PhysicalPosition::new(xev.event_x as f64, xev.event_y as f64);
-
-                            // Mouse cursor position changes when touch events are received.
-                            // Only the first concurrently active touch ID moves the mouse cursor.
-                            if is_first_touch(&mut self.first_touch, &mut self.num_touch, id, phase)
-                            {
-                                callback(Event::WindowEvent {
-                                    window_id,
-                                    event: WindowEvent::CursorMoved {
-                                        device_id: mkdid(util::VIRTUAL_CORE_POINTER),
-                                        position: location.cast(),
-                                        modifiers,
-                                    },
-                                });
-                            }
-
+                        let dpi_factor =
+                            self.with_window(xev.event, |window| window.hidpi_factor());
+                        if let Some(dpi_factor) = dpi_factor {
+                            let location = LogicalPosition::from_physical(
+                                (xev.event_x as f64, xev.event_y as f64),
+                                dpi_factor,
+                            );
                             callback(Event::WindowEvent {
                                 window_id,
                                 event: WindowEvent::Touch(Touch {
@@ -960,7 +967,7 @@ impl<T: 'static> EventProcessor<T> {
                                     phase,
                                     location,
                                     force: None, // TODO
-                                    id,
+                                    id: xev.detail as u64,
                                 }),
                             })
                         }
@@ -1049,11 +1056,22 @@ impl<T: 'static> EventProcessor<T> {
                             return;
                         }
                         let scancode = (keycode - 8) as u32;
-                        let keysym = wt.xconn.keycode_to_keysym(keycode as ffi::KeyCode);
+
+                        let keysym = unsafe {
+                            (wt.xconn.xlib.XKeycodeToKeysym)(
+                                wt.xconn.display,
+                                xev.detail as ffi::KeyCode,
+                                0,
+                            )
+                        };
+                        wt.xconn
+                            .check_errors()
+                            .expect("Failed to lookup raw keysym");
+
                         let virtual_keycode = events::keysym_to_element(keysym as c_uint);
+
                         let modifiers = self.device_mod_state.modifiers();
 
-                        #[allow(deprecated)]
                         callback(Event::DeviceEvent {
                             device_id,
                             event: DeviceEvent::Key(KeyboardInput {
@@ -1078,7 +1096,9 @@ impl<T: 'static> EventProcessor<T> {
                             if modifiers != new_modifiers {
                                 callback(Event::DeviceEvent {
                                     device_id,
-                                    event: DeviceEvent::ModifiersChanged(new_modifiers),
+                                    event: DeviceEvent::ModifiersChanged {
+                                        modifiers: new_modifiers,
+                                    },
                                 });
                             }
                         }
@@ -1121,48 +1141,27 @@ impl<T: 'static> EventProcessor<T> {
                                 .iter()
                                 .find(|prev_monitor| prev_monitor.name == new_monitor.name)
                                 .map(|prev_monitor| {
-                                    if new_monitor.scale_factor != prev_monitor.scale_factor {
+                                    if new_monitor.hidpi_factor != prev_monitor.hidpi_factor {
                                         for (window_id, window) in wt.windows.borrow().iter() {
                                             if let Some(window) = window.upgrade() {
                                                 // Check if the window is on this monitor
                                                 let monitor = window.current_monitor();
                                                 if monitor.name == new_monitor.name {
+                                                    callback(Event::WindowEvent {
+                                                        window_id: mkwid(window_id.0),
+                                                        event: WindowEvent::HiDpiFactorChanged(
+                                                            new_monitor.hidpi_factor,
+                                                        ),
+                                                    });
                                                     let (width, height) =
                                                         window.inner_size_physical();
-                                                    let (new_width, new_height) = window
-                                                        .adjust_for_dpi(
-                                                            prev_monitor.scale_factor,
-                                                            new_monitor.scale_factor,
-                                                            width,
-                                                            height,
-                                                            &*window.shared_state.lock(),
-                                                        );
-
-                                                    let window_id = crate::window::WindowId(
-                                                        crate::platform_impl::platform::WindowId::X(
-                                                            *window_id,
-                                                        ),
+                                                    let (_, _, flusher) = window.adjust_for_dpi(
+                                                        prev_monitor.hidpi_factor,
+                                                        new_monitor.hidpi_factor,
+                                                        width as f64,
+                                                        height as f64,
                                                     );
-                                                    let old_inner_size =
-                                                        PhysicalSize::new(width, height);
-                                                    let mut new_inner_size =
-                                                        PhysicalSize::new(new_width, new_height);
-
-                                                    callback(Event::WindowEvent {
-                                                        window_id,
-                                                        event: WindowEvent::ScaleFactorChanged {
-                                                            scale_factor: new_monitor.scale_factor,
-                                                            new_inner_size: &mut new_inner_size,
-                                                        },
-                                                    });
-
-                                                    if new_inner_size != old_inner_size {
-                                                        let (new_width, new_height) =
-                                                            new_inner_size.into();
-                                                        window.set_inner_size_physical(
-                                                            new_width, new_height,
-                                                        );
-                                                    }
+                                                    flusher.queue();
                                                 }
                                             }
                                         }
@@ -1181,66 +1180,4 @@ impl<T: 'static> EventProcessor<T> {
             Err(_) => (),
         }
     }
-
-    fn handle_pressed_keys<F>(
-        &self,
-        window_id: crate::window::WindowId,
-        state: ElementState,
-        callback: &mut F,
-    ) where
-        F: FnMut(Event<'_, T>),
-    {
-        let wt = get_xtarget(&self.target);
-
-        let device_id = mkdid(util::VIRTUAL_CORE_KEYBOARD);
-        let modifiers = self.device_mod_state.modifiers();
-
-        // Get the set of keys currently pressed and apply Key events to each
-        let keys = wt.xconn.query_keymap();
-
-        for keycode in &keys {
-            if keycode < 8 {
-                continue;
-            }
-
-            let scancode = (keycode - 8) as u32;
-            let keysym = wt.xconn.keycode_to_keysym(keycode);
-            let virtual_keycode = events::keysym_to_element(keysym as c_uint);
-
-            #[allow(deprecated)]
-            callback(Event::WindowEvent {
-                window_id,
-                event: WindowEvent::KeyboardInput {
-                    device_id,
-                    input: KeyboardInput {
-                        scancode,
-                        state,
-                        virtual_keycode,
-                        modifiers,
-                    },
-                    is_synthetic: true,
-                },
-            });
-        }
-    }
-}
-
-fn is_first_touch(first: &mut Option<u64>, num: &mut u32, id: u64, phase: TouchPhase) -> bool {
-    match phase {
-        TouchPhase::Started => {
-            if *num == 0 {
-                *first = Some(id);
-            }
-            *num += 1;
-        }
-        TouchPhase::Cancelled | TouchPhase::Ended => {
-            if *first == Some(id) {
-                *first = None;
-            }
-            *num = num.saturating_sub(1);
-        }
-        _ => (),
-    }
-
-    *first == Some(id)
 }

src/platform_impl/linux/x11/mod.rs

@@ -1,10 +1,4 @@
-#![cfg(any(
-    target_os = "linux",
-    target_os = "dragonfly",
-    target_os = "freebsd",
-    target_os = "netbsd",
-    target_os = "openbsd"
-))]
+#![cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "netbsd", target_os = "openbsd"))]
 
 mod dnd;
 mod event_processor;
@@ -24,7 +18,7 @@ pub use self::{
 
 use std::{
     cell::RefCell,
-    collections::{HashMap, HashSet},
+    collections::{HashMap, HashSet, VecDeque},
     ffi::CStr,
     mem::{self, MaybeUninit},
     ops::Deref,
@@ -37,10 +31,6 @@ use std::{
 
 use libc::{self, setlocale, LC_CTYPE};
 
-use mio::{unix::EventedFd, Events, Poll, PollOpt, Ready, Token};
-
-use mio_extras::channel::{channel, Receiver, SendError, Sender};
-
 use self::{
     dnd::{Dnd, DndState},
     event_processor::EventProcessor,
@@ -49,15 +39,12 @@ use self::{
 };
 use crate::{
     error::OsError as RootOsError,
-    event::{Event, StartCause},
+    event::{Event, StartCause, WindowEvent},
     event_loop::{ControlFlow, EventLoopClosed, EventLoopWindowTarget as RootELW},
     platform_impl::{platform::sticky_exit_callback, PlatformSpecificWindowBuilderAttributes},
     window::WindowAttributes,
 };
 
-const X_TOKEN: Token = Token(0);
-const USER_TOKEN: Token = Token(1);
-
 pub struct EventLoopWindowTarget<T> {
     xconn: Arc<XConnection>,
     wm_delete_window: ffi::Atom,
@@ -71,15 +58,18 @@ pub struct EventLoopWindowTarget<T> {
 }
 
 pub struct EventLoop<T: 'static> {
-    poll: Poll,
-    event_processor: EventProcessor<T>,
-    user_channel: Receiver<T>,
-    user_sender: Sender<T>,
-    target: Rc<RootELW<T>>,
+    inner_loop: ::calloop::EventLoop<()>,
+    _x11_source: ::calloop::Source<::calloop::generic::Generic<::calloop::generic::EventedRawFd>>,
+    _user_source: ::calloop::Source<::calloop::channel::Channel<T>>,
+    pending_user_events: Rc<RefCell<VecDeque<T>>>,
+    event_processor: Rc<RefCell<EventProcessor<T>>>,
+    user_sender: ::calloop::channel::Sender<T>,
+    pending_events: Rc<RefCell<VecDeque<Event<T>>>>,
+    pub(crate) target: Rc<RootELW<T>>,
 }
 
 pub struct EventLoopProxy<T: 'static> {
-    user_sender: Sender<T>,
+    user_sender: ::calloop::channel::Sender<T>,
 }
 
 impl<T: 'static> Clone for EventLoopProxy<T> {
@@ -155,8 +145,6 @@ impl<T: 'static> EventLoop<T> {
 
         xconn.update_cached_wm_info(root);
 
-        let pending_redraws: Arc<Mutex<HashSet<WindowId>>> = Default::default();
-
         let mut mod_keymap = ModifierKeymap::new();
         mod_keymap.reset_from_x_connection(&xconn);
 
@@ -170,32 +158,33 @@ impl<T: 'static> EventLoop<T> {
                 xconn,
                 wm_delete_window,
                 net_wm_ping,
-                pending_redraws: pending_redraws.clone(),
+                pending_redraws: Default::default(),
             }),
             _marker: ::std::marker::PhantomData,
         });
 
-        let poll = Poll::new().unwrap();
+        // A calloop event loop to drive us
+        let inner_loop = ::calloop::EventLoop::new().unwrap();
 
-        let (user_sender, user_channel) = channel();
+        // Handle user events
+        let pending_user_events = Rc::new(RefCell::new(VecDeque::new()));
+        let pending_user_events2 = pending_user_events.clone();
 
-        poll.register(
-            &EventedFd(&get_xtarget(&target).xconn.x11_fd),
-            X_TOKEN,
-            Ready::readable(),
-            PollOpt::level(),
-        )
-        .unwrap();
+        let (user_sender, user_channel) = ::calloop::channel::channel();
 
-        poll.register(
-            &user_channel,
-            USER_TOKEN,
-            Ready::readable(),
-            PollOpt::level(),
-        )
-        .unwrap();
+        let _user_source = inner_loop
+            .handle()
+            .insert_source(user_channel, move |evt, &mut ()| {
+                if let ::calloop::channel::Event::Msg(msg) = evt {
+                    pending_user_events2.borrow_mut().push_back(msg);
+                }
+            })
+            .unwrap();
 
-        let event_processor = EventProcessor {
+        // Handle X11 events
+        let pending_events: Rc<RefCell<VecDeque<_>>> = Default::default();
+
+        let processor = EventProcessor {
             target: target.clone(),
             dnd,
             devices: Default::default(),
@@ -204,8 +193,6 @@ impl<T: 'static> EventLoop<T> {
             xi2ext,
             mod_keymap,
             device_mod_state: Default::default(),
-            num_touch: 0,
-            first_touch: None,
         };
 
         // Register for device hotplug events
@@ -215,12 +202,36 @@ impl<T: 'static> EventLoop<T> {
             .select_xinput_events(root, ffi::XIAllDevices, ffi::XI_HierarchyChangedMask)
             .queue();
 
-        event_processor.init_device(ffi::XIAllDevices);
+        processor.init_device(ffi::XIAllDevices);
+
+        let processor = Rc::new(RefCell::new(processor));
+        let event_processor = processor.clone();
+
+        // Setup the X11 event source
+        let mut x11_events =
+            ::calloop::generic::Generic::from_raw_fd(get_xtarget(&target).xconn.x11_fd);
+        x11_events.set_interest(::calloop::mio::Ready::readable());
+        let _x11_source = inner_loop
+            .handle()
+            .insert_source(x11_events, {
+                let pending_events = pending_events.clone();
+                move |evt, &mut ()| {
+                    if evt.readiness.is_readable() {
+                        let mut processor = processor.borrow_mut();
+                        let mut pending_events = pending_events.borrow_mut();
+                        drain_events(&mut processor, &mut pending_events);
+                    }
+                }
+            })
+            .unwrap();
 
         let result = EventLoop {
-            poll,
-            user_channel,
+            inner_loop,
+            pending_events,
+            _x11_source,
+            _user_source,
             user_sender,
+            pending_user_events,
             event_processor,
             target,
         };
@@ -238,16 +249,12 @@ impl<T: 'static> EventLoop<T> {
         &self.target
     }
 
-    pub(crate) fn x_connection(&self) -> &Arc<XConnection> {
-        get_xtarget(&self.target).x_connection()
-    }
-
     pub fn run_return<F>(&mut self, mut callback: F)
     where
-        F: FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+        F: FnMut(Event<T>, &RootELW<T>, &mut ControlFlow),
     {
         let mut control_flow = ControlFlow::default();
-        let mut events = Events::with_capacity(8);
+        let wt = get_xtarget(&self.target);
 
         callback(
             crate::event::Event::NewEvents(crate::event::StartCause::Init),
@@ -256,31 +263,28 @@ impl<T: 'static> EventLoop<T> {
         );
 
         loop {
-            // Process all pending events
-            self.drain_events(&mut callback, &mut control_flow);
+            self.drain_events();
 
-            let wt = get_xtarget(&self.target);
+            // Empty the event buffer
+            {
+                let mut guard = self.pending_events.borrow_mut();
+                for evt in guard.drain(..) {
+                    sticky_exit_callback(evt, &self.target, &mut control_flow, &mut callback);
+                }
+            }
 
             // Empty the user event buffer
             {
-                while let Ok(event) = self.user_channel.try_recv() {
+                let mut guard = self.pending_user_events.borrow_mut();
+                for evt in guard.drain(..) {
                     sticky_exit_callback(
-                        crate::event::Event::UserEvent(event),
+                        crate::event::Event::UserEvent(evt),
                         &self.target,
                         &mut control_flow,
                         &mut callback,
                     );
                 }
             }
-            // send MainEventsCleared
-            {
-                sticky_exit_callback(
-                    crate::event::Event::MainEventsCleared,
-                    &self.target,
-                    &mut control_flow,
-                    &mut callback,
-                );
-            }
             // Empty the redraw requests
             {
                 // Release the lock to prevent deadlock
@@ -288,17 +292,20 @@ impl<T: 'static> EventLoop<T> {
 
                 for wid in windows {
                     sticky_exit_callback(
-                        Event::RedrawRequested(crate::window::WindowId(super::WindowId::X(wid))),
+                        Event::WindowEvent {
+                            window_id: crate::window::WindowId(super::WindowId::X(wid)),
+                            event: WindowEvent::RedrawRequested,
+                        },
                         &self.target,
                         &mut control_flow,
                         &mut callback,
                     );
                 }
             }
-            // send RedrawEventsCleared
+            // send Events cleared
             {
                 sticky_exit_callback(
-                    crate::event::Event::RedrawEventsCleared,
+                    crate::event::Event::EventsCleared,
                     &self.target,
                     &mut control_flow,
                     &mut callback,
@@ -306,7 +313,7 @@ impl<T: 'static> EventLoop<T> {
             }
 
             let start = Instant::now();
-            let (mut cause, deadline, timeout);
+            let (mut cause, deadline, mut timeout);
 
             match control_flow {
                 ControlFlow::Exit => break,
@@ -337,39 +344,26 @@ impl<T: 'static> EventLoop<T> {
                 }
             }
 
-            if self.event_processor.poll() {
-                // If the XConnection already contains buffered events, we don't
-                // need to wait for data on the socket.
-                // However, we still need to check for user events.
-                self.poll
-                    .poll(&mut events, Some(Duration::from_millis(0)))
-                    .unwrap();
-                events.clear();
+            if self.events_waiting() {
+                timeout = Some(Duration::from_millis(0));
+            }
 
-                callback(
-                    crate::event::Event::NewEvents(cause),
-                    &self.target,
-                    &mut control_flow,
-                );
-            } else {
-                self.poll.poll(&mut events, timeout).unwrap();
-                events.clear();
+            self.inner_loop.dispatch(timeout, &mut ()).unwrap();
 
-                let wait_cancelled = deadline.map_or(false, |deadline| Instant::now() < deadline);
-
-                if wait_cancelled {
+            if let Some(deadline) = deadline {
+                if deadline > Instant::now() {
                     cause = StartCause::WaitCancelled {
                         start,
-                        requested_resume: deadline,
+                        requested_resume: Some(deadline),
                     };
                 }
-
-                callback(
-                    crate::event::Event::NewEvents(cause),
-                    &self.target,
-                    &mut control_flow,
-                );
             }
+
+            callback(
+                crate::event::Event::NewEvents(cause),
+                &self.target,
+                &mut control_flow,
+            );
         }
 
         callback(
@@ -381,42 +375,37 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(mut self, callback: F) -> !
     where
-        F: 'static + FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
+        F: 'static + FnMut(Event<T>, &RootELW<T>, &mut ControlFlow),
     {
         self.run_return(callback);
         ::std::process::exit(0);
     }
 
-    fn drain_events<F>(&mut self, callback: &mut F, control_flow: &mut ControlFlow)
-    where
-        F: FnMut(Event<'_, T>, &RootELW<T>, &mut ControlFlow),
-    {
-        let target = &self.target;
-        let mut xev = MaybeUninit::uninit();
+    fn drain_events(&self) {
+        let mut processor = self.event_processor.borrow_mut();
+        let mut pending_events = self.pending_events.borrow_mut();
 
-        let wt = get_xtarget(&self.target);
-        let mut pending_redraws = wt.pending_redraws.lock().unwrap();
+        drain_events(&mut processor, &mut pending_events);
+    }
 
-        while unsafe { self.event_processor.poll_one_event(xev.as_mut_ptr()) } {
-            let mut xev = unsafe { xev.assume_init() };
-            self.event_processor.process_event(&mut xev, |event| {
-                sticky_exit_callback(
-                    event,
-                    target,
-                    control_flow,
-                    &mut |event, window_target, control_flow| {
-                        if let Event::RedrawRequested(crate::window::WindowId(
-                            super::WindowId::X(wid),
-                        )) = event
-                        {
-                            pending_redraws.insert(wid);
-                        } else {
-                            callback(event, window_target, control_flow);
-                        }
-                    },
-                );
-            });
-        }
+    fn events_waiting(&self) -> bool {
+        !self.pending_events.borrow().is_empty() || self.event_processor.borrow().poll()
+    }
+}
+
+fn drain_events<T: 'static>(
+    processor: &mut EventProcessor<T>,
+    pending_events: &mut VecDeque<Event<T>>,
+) {
+    let mut callback = |event| {
+        pending_events.push_back(event);
+    };
+
+    // process all pending events
+    let mut xev = MaybeUninit::uninit();
+    while unsafe { processor.poll_one_event(xev.as_mut_ptr()) } {
+        let mut xev = unsafe { xev.assume_init() };
+        processor.process_event(&mut xev, &mut callback);
     }
 }
 
@@ -436,14 +425,8 @@ impl<T> EventLoopWindowTarget<T> {
 }
 
 impl<T: 'static> EventLoopProxy<T> {
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
-        self.user_sender.send(event).map_err(|e| {
-            EventLoopClosed(if let SendError::Disconnected(x) = e {
-                x
-            } else {
-                unreachable!()
-            })
-        })
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
+        self.user_sender.send(event).map_err(|_| EventLoopClosed)
     }
 }
 

src/platform_impl/linux/x11/monitor.rs

@@ -38,7 +38,7 @@ pub struct VideoMode {
 
 impl VideoMode {
     #[inline]
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.size.into()
     }
 
@@ -73,7 +73,7 @@ pub struct MonitorHandle {
     /// If the monitor is the primary one
     primary: bool,
     /// The DPI scale factor
-    pub(crate) scale_factor: f64,
+    pub(crate) hidpi_factor: f64,
     /// Used to determine which windows are on this monitor
     pub(crate) rect: util::AaRect,
     /// Supported video modes on this monitor
@@ -114,14 +114,14 @@ impl MonitorHandle {
         crtc: *mut XRRCrtcInfo,
         primary: bool,
     ) -> Option<Self> {
-        let (name, scale_factor, video_modes) = unsafe { xconn.get_output_info(resources, crtc)? };
+        let (name, hidpi_factor, video_modes) = unsafe { xconn.get_output_info(resources, crtc)? };
         let dimensions = unsafe { ((*crtc).width as u32, (*crtc).height as u32) };
         let position = unsafe { ((*crtc).x as i32, (*crtc).y as i32) };
         let rect = util::AaRect::new(position, dimensions);
         Some(MonitorHandle {
             id,
             name,
-            scale_factor,
+            hidpi_factor,
             dimensions,
             position,
             primary,
@@ -134,7 +134,7 @@ impl MonitorHandle {
         MonitorHandle {
             id: 0,
             name: "<dummy monitor>".into(),
-            scale_factor: 1.0,
+            hidpi_factor: 1.0,
             dimensions: (1, 1),
             position: (0, 0),
             primary: true,
@@ -143,11 +143,6 @@ impl MonitorHandle {
         }
     }
 
-    pub(crate) fn is_dummy(&self) -> bool {
-        // Zero is an invalid XID value; no real monitor will have it
-        self.id == 0
-    }
-
     pub fn name(&self) -> Option<String> {
         Some(self.name.clone())
     }
@@ -157,17 +152,17 @@ impl MonitorHandle {
         self.id as u32
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.dimensions.into()
     }
 
-    pub fn position(&self) -> PhysicalPosition<i32> {
+    pub fn position(&self) -> PhysicalPosition {
         self.position.into()
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
-        self.scale_factor
+    pub fn hidpi_factor(&self) -> f64 {
+        self.hidpi_factor
     }
 
     #[inline]

src/platform_impl/linux/x11/util/geometry.rs

@@ -137,9 +137,9 @@ impl FrameExtentsHeuristic {
 
     pub fn inner_pos_to_outer_logical(
         &self,
-        mut logical: LogicalPosition<f64>,
+        mut logical: LogicalPosition,
         factor: f64,
-    ) -> LogicalPosition<f64> {
+    ) -> LogicalPosition {
         use self::FrameExtentsHeuristicPath::*;
         if self.heuristic_path != UnsupportedBordered {
             let frame_extents = self.frame_extents.as_logical(factor);
@@ -166,9 +166,9 @@ impl FrameExtentsHeuristic {
 
     pub fn inner_size_to_outer_logical(
         &self,
-        mut logical: LogicalSize<f64>,
+        mut logical: LogicalSize,
         factor: f64,
-    ) -> LogicalSize<f64> {
+    ) -> LogicalSize {
         let frame_extents = self.frame_extents.as_logical(factor);
         logical.width += frame_extents.left + frame_extents.right;
         logical.height += frame_extents.top + frame_extents.bottom;

src/platform_impl/linux/x11/util/input.rs

@@ -17,12 +17,12 @@ impl ModifiersState {
     }
 
     pub(crate) fn from_x11_mask(mask: c_uint) -> Self {
-        let mut m = ModifiersState::empty();
-        m.set(ModifiersState::ALT, mask & ffi::Mod1Mask != 0);
-        m.set(ModifiersState::SHIFT, mask & ffi::ShiftMask != 0);
-        m.set(ModifiersState::CTRL, mask & ffi::ControlMask != 0);
-        m.set(ModifiersState::LOGO, mask & ffi::Mod4Mask != 0);
-        m
+        ModifiersState {
+            alt: mask & ffi::Mod1Mask != 0,
+            shift: mask & ffi::ShiftMask != 0,
+            ctrl: mask & ffi::ControlMask != 0,
+            logo: mask & ffi::Mod4Mask != 0,
+        }
     }
 }
 

src/platform_impl/linux/x11/util/keys.rs

@@ -1,92 +0,0 @@
-use std::{iter::Enumerate, ptr, slice::Iter};
-
-use super::*;
-
-pub struct Keymap {
-    keys: [u8; 32],
-}
-
-pub struct KeymapIter<'a> {
-    iter: Enumerate<Iter<'a, u8>>,
-    index: usize,
-    item: Option<u8>,
-}
-
-impl Keymap {
-    pub fn iter(&self) -> KeymapIter<'_> {
-        KeymapIter {
-            iter: self.keys.iter().enumerate(),
-            index: 0,
-            item: None,
-        }
-    }
-}
-
-impl<'a> IntoIterator for &'a Keymap {
-    type Item = ffi::KeyCode;
-    type IntoIter = KeymapIter<'a>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.iter()
-    }
-}
-
-impl Iterator for KeymapIter<'_> {
-    type Item = ffi::KeyCode;
-
-    fn next(&mut self) -> Option<ffi::KeyCode> {
-        if self.item.is_none() {
-            while let Some((index, &item)) = self.iter.next() {
-                if item != 0 {
-                    self.index = index;
-                    self.item = Some(item);
-                    break;
-                }
-            }
-        }
-
-        self.item.take().map(|item| {
-            debug_assert!(item != 0);
-
-            let bit = first_bit(item);
-
-            if item != bit {
-                // Remove the first bit; save the rest for further iterations
-                self.item = Some(item ^ bit);
-            }
-
-            let shift = bit.trailing_zeros() + (self.index * 8) as u32;
-            shift as ffi::KeyCode
-        })
-    }
-}
-
-impl XConnection {
-    pub fn keycode_to_keysym(&self, keycode: ffi::KeyCode) -> ffi::KeySym {
-        unsafe { (self.xlib.XKeycodeToKeysym)(self.display, keycode, 0) }
-    }
-
-    pub fn lookup_keysym(&self, xkev: &mut ffi::XKeyEvent) -> ffi::KeySym {
-        let mut keysym = 0;
-
-        unsafe {
-            (self.xlib.XLookupString)(xkev, ptr::null_mut(), 0, &mut keysym, ptr::null_mut());
-        }
-
-        keysym
-    }
-
-    pub fn query_keymap(&self) -> Keymap {
-        let mut keys = [0; 32];
-
-        unsafe {
-            (self.xlib.XQueryKeymap)(self.display, keys.as_mut_ptr() as *mut c_char);
-        }
-
-        Keymap { keys }
-    }
-}
-
-fn first_bit(b: u8) -> u8 {
-    1 << b.trailing_zeros()
-}

src/platform_impl/linux/x11/util/mod.rs

@@ -9,7 +9,6 @@ mod geometry;
 mod hint;
 mod icon;
 mod input;
-pub mod keys;
 mod memory;
 pub mod modifiers;
 mod randr;

src/platform_impl/linux/x11/util/modifiers.rs

@@ -116,10 +116,10 @@ impl ModifierKeyState {
         let mut new_state = *state;
 
         match except {
-            Some(Modifier::Alt) => new_state.set(ModifiersState::ALT, self.state.alt()),
-            Some(Modifier::Ctrl) => new_state.set(ModifiersState::CTRL, self.state.ctrl()),
-            Some(Modifier::Shift) => new_state.set(ModifiersState::SHIFT, self.state.shift()),
-            Some(Modifier::Logo) => new_state.set(ModifiersState::LOGO, self.state.logo()),
+            Some(Modifier::Alt) => new_state.alt = self.state.alt,
+            Some(Modifier::Ctrl) => new_state.ctrl = self.state.ctrl,
+            Some(Modifier::Shift) => new_state.shift = self.state.shift,
+            Some(Modifier::Logo) => new_state.logo = self.state.logo,
             None => (),
         }
 
@@ -170,18 +170,18 @@ impl ModifierKeyState {
 
 fn get_modifier(state: &ModifiersState, modifier: Modifier) -> bool {
     match modifier {
-        Modifier::Alt => state.alt(),
-        Modifier::Ctrl => state.ctrl(),
-        Modifier::Shift => state.shift(),
-        Modifier::Logo => state.logo(),
+        Modifier::Alt => state.alt,
+        Modifier::Ctrl => state.ctrl,
+        Modifier::Shift => state.shift,
+        Modifier::Logo => state.logo,
     }
 }
 
 fn set_modifier(state: &mut ModifiersState, modifier: Modifier, value: bool) {
     match modifier {
-        Modifier::Alt => state.set(ModifiersState::ALT, value),
-        Modifier::Ctrl => state.set(ModifiersState::CTRL, value),
-        Modifier::Shift => state.set(ModifiersState::SHIFT, value),
-        Modifier::Logo => state.set(ModifiersState::LOGO, value),
+        Modifier::Alt => state.alt = value,
+        Modifier::Ctrl => state.ctrl = value,
+        Modifier::Shift => state.shift = value,
+        Modifier::Logo => state.logo = value,
     }
 }

src/platform_impl/linux/x11/util/randr.rs

@@ -4,19 +4,26 @@ use super::{
     ffi::{CurrentTime, RRCrtc, RRMode, Success, XRRCrtcInfo, XRRScreenResources},
     *,
 };
-use crate::{dpi::validate_scale_factor, platform_impl::platform::x11::VideoMode};
-
-/// Represents values of `WINIT_HIDPI_FACTOR`.
-pub enum EnvVarDPI {
-    Randr,
-    Scale(f64),
-    NotSet,
-}
+use crate::{dpi::validate_hidpi_factor, platform_impl::platform::x11::VideoMode};
 
 pub fn calc_dpi_factor(
     (width_px, height_px): (u32, u32),
     (width_mm, height_mm): (u64, u64),
 ) -> f64 {
+    // Override DPI if `WINIT_HIDPI_FACTOR` variable is set
+    let dpi_override = env::var("WINIT_HIDPI_FACTOR")
+        .ok()
+        .and_then(|var| f64::from_str(&var).ok());
+    if let Some(dpi_override) = dpi_override {
+        if !validate_hidpi_factor(dpi_override) {
+            panic!(
+                "`WINIT_HIDPI_FACTOR` invalid; DPI factors must be normal floats greater than 0. Got `{}`",
+                dpi_override,
+            );
+        }
+        return dpi_override;
+    }
+
     // See http://xpra.org/trac/ticket/728 for more information.
     if width_mm == 0 || height_mm == 0 {
         warn!("XRandR reported that the display's 0mm in size, which is certifiably insane");
@@ -26,7 +33,7 @@ pub fn calc_dpi_factor(
     let ppmm = ((width_px as f64 * height_px as f64) / (width_mm as f64 * height_mm as f64)).sqrt();
     // Quantize 1/12 step size
     let dpi_factor = ((ppmm * (12.0 * 25.4 / 96.0)).round() / 12.0).max(1.0);
-    assert!(validate_scale_factor(dpi_factor));
+    assert!(validate_hidpi_factor(dpi_factor));
     dpi_factor
 }
 
@@ -100,65 +107,20 @@ impl XConnection {
             (*output_info).nameLen as usize,
         );
         let name = String::from_utf8_lossy(name_slice).into();
-        // Override DPI if `WINIT_X11_SCALE_FACTOR` variable is set
-        let deprecated_dpi_override = env::var("WINIT_HIDPI_FACTOR").ok();
-        if deprecated_dpi_override.is_some() {
-            warn!(
-	            "The WINIT_HIDPI_FACTOR environment variable is deprecated; use WINIT_X11_SCALE_FACTOR"
-	        )
-        }
-        let dpi_env = env::var("WINIT_X11_SCALE_FACTOR").ok().map_or_else(
-            || EnvVarDPI::NotSet,
-            |var| {
-                if var.to_lowercase() == "randr" {
-                    EnvVarDPI::Randr
-                } else if let Ok(dpi) = f64::from_str(&var) {
-                    EnvVarDPI::Scale(dpi)
-                } else if var.is_empty() {
-                    EnvVarDPI::NotSet
-                } else {
-                    panic!(
-                        "`WINIT_X11_SCALE_FACTOR` invalid; DPI factors must be either normal floats greater than 0, or `randr`. Got `{}`",
-                        var
-                    );
-                }
-            },
-        );
-
-        let scale_factor = match dpi_env {
-            EnvVarDPI::Randr => calc_dpi_factor(
+        let hidpi_factor = if let Some(dpi) = self.get_xft_dpi() {
+            dpi / 96.
+        } else {
+            calc_dpi_factor(
                 ((*crtc).width as u32, (*crtc).height as u32),
                 (
                     (*output_info).mm_width as u64,
                     (*output_info).mm_height as u64,
                 ),
-            ),
-            EnvVarDPI::Scale(dpi_override) => {
-                if !validate_scale_factor(dpi_override) {
-                    panic!(
-                        "`WINIT_X11_SCALE_FACTOR` invalid; DPI factors must be either normal floats greater than 0, or `randr`. Got `{}`",
-                        dpi_override,
-                    );
-                }
-                dpi_override
-            }
-            EnvVarDPI::NotSet => {
-                if let Some(dpi) = self.get_xft_dpi() {
-                    dpi / 96.
-                } else {
-                    calc_dpi_factor(
-                        ((*crtc).width as u32, (*crtc).height as u32),
-                        (
-                            (*output_info).mm_width as u64,
-                            (*output_info).mm_height as u64,
-                        ),
-                    )
-                }
-            }
+            )
         };
 
         (self.xrandr.XRRFreeOutputInfo)(output_info);
-        Some((name, scale_factor, modes))
+        Some((name, hidpi_factor, modes))
     }
     pub fn set_crtc_config(&self, crtc_id: RRCrtc, mode_id: RRMode) -> Result<(), ()> {
         unsafe {

src/platform_impl/linux/x11/window.rs

@@ -15,7 +15,7 @@ use libc;
 use parking_lot::Mutex;
 
 use crate::{
-    dpi::{PhysicalPosition, PhysicalSize, Position, Size},
+    dpi::{LogicalPosition, LogicalSize},
     error::{ExternalError, NotSupportedError, OsError as RootOsError},
     monitor::{MonitorHandle as RootMonitorHandle, VideoMode as RootVideoMode},
     platform_impl::{
@@ -36,7 +36,7 @@ pub struct SharedState {
     pub inner_position: Option<(i32, i32)>,
     pub inner_position_rel_parent: Option<(i32, i32)>,
     pub last_monitor: X11MonitorHandle,
-    pub dpi_adjusted: Option<(u32, u32)>,
+    pub dpi_adjusted: Option<(f64, f64)>,
     pub fullscreen: Option<Fullscreen>,
     // Set when application calls `set_fullscreen` when window is not visible
     pub desired_fullscreen: Option<Option<Fullscreen>>,
@@ -45,10 +45,8 @@ pub struct SharedState {
     // Used to restore video mode after exiting fullscreen
     pub desktop_video_mode: Option<(ffi::RRCrtc, ffi::RRMode)>,
     pub frame_extents: Option<util::FrameExtentsHeuristic>,
-    pub min_inner_size: Option<Size>,
-    pub max_inner_size: Option<Size>,
-    pub resize_increments: Option<Size>,
-    pub base_size: Option<Size>,
+    pub min_inner_size: Option<LogicalSize>,
+    pub max_inner_size: Option<LogicalSize>,
     pub visibility: Visibility,
 }
 
@@ -85,8 +83,6 @@ impl SharedState {
             frame_extents: None,
             min_inner_size: None,
             max_inner_size: None,
-            resize_increments: None,
-            base_size: None,
         })
     }
 }
@@ -136,24 +132,24 @@ impl UnownedWindow {
                 })
                 .unwrap_or_else(|| monitors.swap_remove(0))
         };
-        let dpi_factor = guessed_monitor.scale_factor();
+        let dpi_factor = guessed_monitor.hidpi_factor();
 
-        info!("Guessed window scale factor: {}", dpi_factor);
+        info!("Guessed window DPI factor: {}", dpi_factor);
 
         let max_inner_size: Option<(u32, u32)> = window_attrs
             .max_inner_size
-            .map(|size| size.to_physical::<u32>(dpi_factor).into());
+            .map(|size| size.to_physical(dpi_factor).into());
         let min_inner_size: Option<(u32, u32)> = window_attrs
             .min_inner_size
-            .map(|size| size.to_physical::<u32>(dpi_factor).into());
+            .map(|size| size.to_physical(dpi_factor).into());
 
         let dimensions = {
             // x11 only applies constraints when the window is actively resized
             // by the user, so we have to manually apply the initial constraints
             let mut dimensions: (u32, u32) = window_attrs
                 .inner_size
-                .map(|size| size.to_physical::<u32>(dpi_factor))
                 .or_else(|| Some((800, 600).into()))
+                .map(|size| size.to_physical(dpi_factor))
                 .map(Into::into)
                 .unwrap();
             if let Some(max) = max_inner_size {
@@ -239,7 +235,7 @@ impl UnownedWindow {
             )
         };
 
-        let mut window = UnownedWindow {
+        let window = UnownedWindow {
             xconn: Arc::clone(xconn),
             xwindow,
             root,
@@ -324,11 +320,10 @@ impl UnownedWindow {
             {
                 let mut min_inner_size = window_attrs
                     .min_inner_size
-                    .map(|size| size.to_physical::<u32>(dpi_factor));
+                    .map(|size| size.to_physical(dpi_factor));
                 let mut max_inner_size = window_attrs
                     .max_inner_size
-                    .map(|size| size.to_physical::<u32>(dpi_factor));
-
+                    .map(|size| size.to_physical(dpi_factor));
                 if !window_attrs.resizable {
                     if util::wm_name_is_one_of(&["Xfwm4"]) {
                         warn!("To avoid a WM bug, disabling resizing has no effect on Xfwm4");
@@ -336,11 +331,9 @@ impl UnownedWindow {
                         max_inner_size = Some(dimensions.into());
                         min_inner_size = Some(dimensions.into());
 
-                        let mut shared_state = window.shared_state.get_mut();
-                        shared_state.min_inner_size = window_attrs.min_inner_size;
-                        shared_state.max_inner_size = window_attrs.max_inner_size;
-                        shared_state.resize_increments = pl_attribs.resize_increments;
-                        shared_state.base_size = pl_attribs.base_size;
+                        let mut shared_state_lock = window.shared_state.lock();
+                        shared_state_lock.min_inner_size = window_attrs.min_inner_size;
+                        shared_state_lock.max_inner_size = window_attrs.max_inner_size;
                     }
                 }
 
@@ -348,16 +341,8 @@ impl UnownedWindow {
                 normal_hints.set_size(Some(dimensions));
                 normal_hints.set_min_size(min_inner_size.map(Into::into));
                 normal_hints.set_max_size(max_inner_size.map(Into::into));
-                normal_hints.set_resize_increments(
-                    pl_attribs
-                        .resize_increments
-                        .map(|size| size.to_physical::<u32>(dpi_factor).into()),
-                );
-                normal_hints.set_base_size(
-                    pl_attribs
-                        .base_size
-                        .map(|size| size.to_physical::<u32>(dpi_factor).into()),
-                );
+                normal_hints.set_resize_increments(pl_attribs.resize_increments);
+                normal_hints.set_base_size(pl_attribs.base_size);
                 xconn.set_normal_hints(window.xwindow, normal_hints).queue();
             }
 
@@ -455,6 +440,16 @@ impl UnownedWindow {
             .map_err(|x_err| os_error!(OsError::XError(x_err)))
     }
 
+    fn logicalize_coords(&self, (x, y): (i32, i32)) -> LogicalPosition {
+        let dpi = self.hidpi_factor();
+        LogicalPosition::from_physical((x, y), dpi)
+    }
+
+    fn logicalize_size(&self, (width, height): (u32, u32)) -> LogicalSize {
+        let dpi = self.hidpi_factor();
+        LogicalSize::from_physical((width, height), dpi)
+    }
+
     fn set_pid(&self) -> Option<util::Flusher<'_>> {
         let pid_atom = unsafe { self.xconn.get_atom_unchecked(b"_NET_WM_PID\0") };
         let client_machine_atom = unsafe { self.xconn.get_atom_unchecked(b"WM_CLIENT_MACHINE\0") };
@@ -656,7 +651,7 @@ impl UnownedWindow {
                 };
 
                 // Don't set fullscreen on an invalid dummy monitor handle
-                if monitor.is_dummy() {
+                if monitor.id == 0 {
                     return None;
                 }
 
@@ -754,35 +749,6 @@ impl UnownedWindow {
         self.xconn.primary_monitor()
     }
 
-    fn set_minimized_inner(&self, minimized: bool) -> util::Flusher<'_> {
-        unsafe {
-            if minimized {
-                let screen = (self.xconn.xlib.XDefaultScreen)(self.xconn.display);
-
-                (self.xconn.xlib.XIconifyWindow)(self.xconn.display, self.xwindow, screen);
-
-                util::Flusher::new(&self.xconn)
-            } else {
-                let atom = self.xconn.get_atom_unchecked(b"_NET_ACTIVE_WINDOW\0");
-
-                self.xconn.send_client_msg(
-                    self.xwindow,
-                    self.root,
-                    atom,
-                    Some(ffi::SubstructureRedirectMask | ffi::SubstructureNotifyMask),
-                    [1, ffi::CurrentTime as c_long, 0, 0, 0],
-                )
-            }
-        }
-    }
-
-    #[inline]
-    pub fn set_minimized(&self, minimized: bool) {
-        self.set_minimized_inner(minimized)
-            .flush()
-            .expect("Failed to change window minimization");
-    }
-
     fn set_maximized_inner(&self, maximized: bool) -> util::Flusher<'_> {
         let horz_atom = unsafe {
             self.xconn
@@ -956,11 +922,11 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn outer_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn outer_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         let extents = (*self.shared_state.lock()).frame_extents.clone();
         if let Some(extents) = extents {
-            let (x, y) = self.inner_position_physical();
-            Ok(extents.inner_pos_to_outer(x, y).into())
+            let logical = self.inner_position().unwrap();
+            Ok(extents.inner_pos_to_outer_logical(logical, self.hidpi_factor()))
         } else {
             self.update_cached_frame_extents();
             self.outer_position()
@@ -977,8 +943,8 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn inner_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
-        Ok(self.inner_position_physical().into())
+    pub fn inner_position(&self) -> Result<LogicalPosition, NotSupportedError> {
+        Ok(self.logicalize_coords(self.inner_position_physical()))
     }
 
     pub(crate) fn set_position_inner(&self, mut x: i32, mut y: i32) -> util::Flusher<'_> {
@@ -1007,8 +973,8 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_outer_position(&self, position: Position) {
-        let (x, y) = position.to_physical::<i32>(self.scale_factor()).into();
+    pub fn set_outer_position(&self, logical_position: LogicalPosition) {
+        let (x, y) = logical_position.to_physical(self.hidpi_factor()).into();
         self.set_position_physical(x, y);
     }
 
@@ -1022,16 +988,16 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn inner_size(&self) -> PhysicalSize<u32> {
-        self.inner_size_physical().into()
+    pub fn inner_size(&self) -> LogicalSize {
+        self.logicalize_size(self.inner_size_physical())
     }
 
     #[inline]
-    pub fn outer_size(&self) -> PhysicalSize<u32> {
+    pub fn outer_size(&self) -> LogicalSize {
         let extents = self.shared_state.lock().frame_extents.clone();
         if let Some(extents) = extents {
-            let (width, height) = self.inner_size_physical();
-            extents.inner_size_to_outer(width, height).into()
+            let logical = self.inner_size();
+            extents.inner_size_to_outer_logical(logical, self.hidpi_factor())
         } else {
             self.update_cached_frame_extents();
             self.outer_size()
@@ -1052,9 +1018,9 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_inner_size(&self, size: Size) {
-        let dpi_factor = self.scale_factor();
-        let (width, height) = size.to_physical::<u32>(dpi_factor).into();
+    pub fn set_inner_size(&self, logical_size: LogicalSize) {
+        let dpi_factor = self.hidpi_factor();
+        let (width, height) = logical_size.to_physical(dpi_factor).into();
         self.set_inner_size_physical(width, height);
     }
 
@@ -1075,10 +1041,10 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_min_inner_size(&self, dimensions: Option<Size>) {
-        self.shared_state.lock().min_inner_size = dimensions;
-        let physical_dimensions =
-            dimensions.map(|dimensions| dimensions.to_physical::<u32>(self.scale_factor()).into());
+    pub fn set_min_inner_size(&self, logical_dimensions: Option<LogicalSize>) {
+        self.shared_state.lock().min_inner_size = logical_dimensions;
+        let physical_dimensions = logical_dimensions
+            .map(|logical_dimensions| logical_dimensions.to_physical(self.hidpi_factor()).into());
         self.set_min_inner_size_physical(physical_dimensions);
     }
 
@@ -1088,10 +1054,10 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_max_inner_size(&self, dimensions: Option<Size>) {
-        self.shared_state.lock().max_inner_size = dimensions;
-        let physical_dimensions =
-            dimensions.map(|dimensions| dimensions.to_physical::<u32>(self.scale_factor()).into());
+    pub fn set_max_inner_size(&self, logical_dimensions: Option<LogicalSize>) {
+        self.shared_state.lock().max_inner_size = logical_dimensions;
+        let physical_dimensions = logical_dimensions
+            .map(|logical_dimensions| logical_dimensions.to_physical(self.hidpi_factor()).into());
         self.set_max_inner_size_physical(physical_dimensions);
     }
 
@@ -1099,29 +1065,37 @@ impl UnownedWindow {
         &self,
         old_dpi_factor: f64,
         new_dpi_factor: f64,
-        width: u32,
-        height: u32,
-        shared_state: &SharedState,
-    ) -> (u32, u32) {
+        width: f64,
+        height: f64,
+    ) -> (f64, f64, util::Flusher<'_>) {
         let scale_factor = new_dpi_factor / old_dpi_factor;
+        let new_width = width * scale_factor;
+        let new_height = height * scale_factor;
         self.update_normal_hints(|normal_hints| {
-            let dpi_adjuster =
-                |size: Size| -> (u32, u32) { size.to_physical::<u32>(new_dpi_factor).into() };
-            let max_size = shared_state.max_inner_size.map(&dpi_adjuster);
-            let min_size = shared_state.min_inner_size.map(&dpi_adjuster);
-            let resize_increments = shared_state.resize_increments.map(&dpi_adjuster);
-            let base_size = shared_state.base_size.map(&dpi_adjuster);
+            let dpi_adjuster = |(width, height): (u32, u32)| -> (u32, u32) {
+                let new_width = width as f64 * scale_factor;
+                let new_height = height as f64 * scale_factor;
+                (new_width.round() as u32, new_height.round() as u32)
+            };
+            let max_size = normal_hints.get_max_size().map(&dpi_adjuster);
+            let min_size = normal_hints.get_min_size().map(&dpi_adjuster);
+            let resize_increments = normal_hints.get_resize_increments().map(&dpi_adjuster);
+            let base_size = normal_hints.get_base_size().map(&dpi_adjuster);
             normal_hints.set_max_size(max_size);
             normal_hints.set_min_size(min_size);
             normal_hints.set_resize_increments(resize_increments);
             normal_hints.set_base_size(base_size);
         })
         .expect("Failed to update normal hints");
-
-        let new_width = (width as f64 * scale_factor).round() as u32;
-        let new_height = (height as f64 * scale_factor).round() as u32;
-
-        (new_width, new_height)
+        unsafe {
+            (self.xconn.xlib.XResizeWindow)(
+                self.xconn.display,
+                self.xwindow,
+                new_width.round() as c_uint,
+                new_height.round() as c_uint,
+            );
+        }
+        (new_width, new_height, util::Flusher::new(&self.xconn))
     }
 
     pub fn set_resizable(&self, resizable: bool) {
@@ -1133,25 +1107,25 @@ impl UnownedWindow {
             return;
         }
 
-        let (min_size, max_size) = if resizable {
+        let (logical_min, logical_max) = if resizable {
             let shared_state_lock = self.shared_state.lock();
             (
                 shared_state_lock.min_inner_size,
                 shared_state_lock.max_inner_size,
             )
         } else {
-            let window_size = Some(Size::from(self.inner_size()));
+            let window_size = Some(self.inner_size());
             (window_size.clone(), window_size)
         };
 
         self.set_maximizable_inner(resizable).queue();
 
-        let dpi_factor = self.scale_factor();
-        let min_inner_size = min_size
-            .map(|size| size.to_physical::<u32>(dpi_factor))
+        let dpi_factor = self.hidpi_factor();
+        let min_inner_size = logical_min
+            .map(|logical_size| logical_size.to_physical(dpi_factor))
             .map(Into::into);
-        let max_inner_size = max_size
-            .map(|size| size.to_physical::<u32>(dpi_factor))
+        let max_inner_size = logical_max
+            .map(|logical_size| logical_size.to_physical(dpi_factor))
             .map(Into::into);
         self.update_normal_hints(|normal_hints| {
             normal_hints.set_min_size(min_inner_size);
@@ -1272,8 +1246,8 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
-        self.current_monitor().scale_factor
+    pub fn hidpi_factor(&self) -> f64 {
+        self.current_monitor().hidpi_factor
     }
 
     pub fn set_cursor_position_physical(&self, x: i32, y: i32) -> Result<(), ExternalError> {
@@ -1286,8 +1260,11 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_cursor_position(&self, position: Position) -> Result<(), ExternalError> {
-        let (x, y) = position.to_physical::<i32>(self.scale_factor()).into();
+    pub fn set_cursor_position(
+        &self,
+        logical_position: LogicalPosition,
+    ) -> Result<(), ExternalError> {
+        let (x, y) = logical_position.to_physical(self.hidpi_factor()).into();
         self.set_cursor_position_physical(x, y)
     }
 
@@ -1299,8 +1276,8 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_ime_position(&self, spot: Position) {
-        let (x, y) = spot.to_physical::<i32>(self.scale_factor()).into();
+    pub fn set_ime_position(&self, logical_spot: LogicalPosition) {
+        let (x, y) = logical_spot.to_physical(self.hidpi_factor()).into();
         self.set_ime_position_physical(x, y);
     }
 

src/platform_impl/macos/app.rs

@@ -11,7 +11,7 @@ use objc::{
 
 use crate::{
     event::{DeviceEvent, ElementState, Event},
-    platform_impl::platform::{app_state::AppState, event::EventWrapper, util, DEVICE_ID},
+    platform_impl::platform::{app_state::AppState, util, DEVICE_ID},
 };
 
 pub struct AppClass(pub *const Class);
@@ -71,32 +71,32 @@ unsafe fn maybe_dispatch_device_event(event: id) {
             let delta_y = event.deltaY() as f64;
 
             if delta_x != 0.0 {
-                events.push_back(EventWrapper::StaticEvent(Event::DeviceEvent {
+                events.push_back(Event::DeviceEvent {
                     device_id: DEVICE_ID,
                     event: DeviceEvent::Motion {
                         axis: 0,
                         value: delta_x,
                     },
-                }));
+                });
             }
 
             if delta_y != 0.0 {
-                events.push_back(EventWrapper::StaticEvent(Event::DeviceEvent {
+                events.push_back(Event::DeviceEvent {
                     device_id: DEVICE_ID,
                     event: DeviceEvent::Motion {
                         axis: 1,
                         value: delta_y,
                     },
-                }));
+                });
             }
 
             if delta_x != 0.0 || delta_y != 0.0 {
-                events.push_back(EventWrapper::StaticEvent(Event::DeviceEvent {
+                events.push_back(Event::DeviceEvent {
                     device_id: DEVICE_ID,
                     event: DeviceEvent::MouseMotion {
                         delta: (delta_x, delta_y),
                     },
-                }));
+                });
             }
 
             AppState::queue_events(events);
@@ -104,26 +104,26 @@ unsafe fn maybe_dispatch_device_event(event: id) {
         appkit::NSLeftMouseDown | appkit::NSRightMouseDown | appkit::NSOtherMouseDown => {
             let mut events = VecDeque::with_capacity(1);
 
-            events.push_back(EventWrapper::StaticEvent(Event::DeviceEvent {
+            events.push_back(Event::DeviceEvent {
                 device_id: DEVICE_ID,
                 event: DeviceEvent::Button {
                     button: event.buttonNumber() as u32,
                     state: ElementState::Pressed,
                 },
-            }));
+            });
 
             AppState::queue_events(events);
         }
         appkit::NSLeftMouseUp | appkit::NSRightMouseUp | appkit::NSOtherMouseUp => {
             let mut events = VecDeque::with_capacity(1);
 
-            events.push_back(EventWrapper::StaticEvent(Event::DeviceEvent {
+            events.push_back(Event::DeviceEvent {
                 device_id: DEVICE_ID,
                 event: DeviceEvent::Button {
                     button: event.buttonNumber() as u32,
                     state: ElementState::Released,
                 },
-            }));
+            });
 
             AppState::queue_events(events);
         }

src/platform_impl/macos/app_state.rs

@@ -11,32 +11,21 @@ use std::{
     time::Instant,
 };
 
-use cocoa::{
-    appkit::{NSApp, NSWindow},
-    base::nil,
-    foundation::{NSAutoreleasePool, NSSize, NSString},
-};
+use cocoa::{appkit::NSApp, base::nil};
 
 use crate::{
-    dpi::LogicalSize,
     event::{Event, StartCause, WindowEvent},
     event_loop::{ControlFlow, EventLoopWindowTarget as RootWindowTarget},
-    platform_impl::platform::{
-        event::{EventProxy, EventWrapper},
-        observer::EventLoopWaker,
-        util::{IdRef, Never},
-        window::get_window_id,
-    },
+    platform_impl::platform::{observer::EventLoopWaker, util::Never},
     window::WindowId,
 };
-use objc::runtime::Object;
 
 lazy_static! {
     static ref HANDLER: Handler = Default::default();
 }
 
-impl<'a, Never> Event<'a, Never> {
-    fn userify<T: 'static>(self) -> Event<'a, T> {
+impl Event<Never> {
+    fn userify<T: 'static>(self) -> Event<T> {
         self.map_nonuser_event()
             // `Never` can't be constructed, so the `UserEvent` variant can't
             // be present here.
@@ -45,13 +34,12 @@ impl<'a, Never> Event<'a, Never> {
 }
 
 pub trait EventHandler: Debug {
-    // Not sure probably it should accept Event<'static, Never>
-    fn handle_nonuser_event(&mut self, event: Event<'_, Never>, control_flow: &mut ControlFlow);
+    fn handle_nonuser_event(&mut self, event: Event<Never>, control_flow: &mut ControlFlow);
     fn handle_user_events(&mut self, control_flow: &mut ControlFlow);
 }
 
 struct EventLoopHandler<T: 'static> {
-    callback: Box<dyn FnMut(Event<'_, T>, &RootWindowTarget<T>, &mut ControlFlow)>,
+    callback: Box<dyn FnMut(Event<T>, &RootWindowTarget<T>, &mut ControlFlow)>,
     will_exit: bool,
     window_target: Rc<RootWindowTarget<T>>,
 }
@@ -66,7 +54,7 @@ impl<T> Debug for EventLoopHandler<T> {
 }
 
 impl<T> EventHandler for EventLoopHandler<T> {
-    fn handle_nonuser_event(&mut self, event: Event<'_, Never>, control_flow: &mut ControlFlow) {
+    fn handle_nonuser_event(&mut self, event: Event<Never>, control_flow: &mut ControlFlow) {
         (self.callback)(event.userify(), &self.window_target, control_flow);
         self.will_exit |= *control_flow == ControlFlow::Exit;
         if self.will_exit {
@@ -95,7 +83,7 @@ struct Handler {
     control_flow_prev: Mutex<ControlFlow>,
     start_time: Mutex<Option<Instant>>,
     callback: Mutex<Option<Box<dyn EventHandler>>>,
-    pending_events: Mutex<VecDeque<EventWrapper>>,
+    pending_events: Mutex<VecDeque<Event<Never>>>,
     pending_redraw: Mutex<Vec<WindowId>>,
     waker: Mutex<EventLoopWaker>,
 }
@@ -104,7 +92,7 @@ unsafe impl Send for Handler {}
 unsafe impl Sync for Handler {}
 
 impl Handler {
-    fn events(&self) -> MutexGuard<'_, VecDeque<EventWrapper>> {
+    fn events<'a>(&'a self) -> MutexGuard<'a, VecDeque<Event<Never>>> {
         self.pending_events.lock().unwrap()
     }
 
@@ -112,7 +100,7 @@ impl Handler {
         self.pending_redraw.lock().unwrap()
     }
 
-    fn waker(&self) -> MutexGuard<'_, EventLoopWaker> {
+    fn waker<'a>(&'a self) -> MutexGuard<'a, EventLoopWaker> {
         self.waker.lock().unwrap()
     }
 
@@ -148,7 +136,7 @@ impl Handler {
         *self.start_time.lock().unwrap() = Some(Instant::now());
     }
 
-    fn take_events(&self) -> VecDeque<EventWrapper> {
+    fn take_events(&self) -> VecDeque<Event<Never>> {
         mem::replace(&mut *self.events(), Default::default())
     }
 
@@ -164,14 +152,9 @@ impl Handler {
         self.in_callback.store(in_callback, Ordering::Release);
     }
 
-    fn handle_nonuser_event(&self, wrapper: EventWrapper) {
+    fn handle_nonuser_event(&self, event: Event<Never>) {
         if let Some(ref mut callback) = *self.callback.lock().unwrap() {
-            match wrapper {
-                EventWrapper::StaticEvent(event) => {
-                    callback.handle_nonuser_event(event, &mut *self.control_flow.lock().unwrap())
-                }
-                EventWrapper::EventProxy(proxy) => self.handle_proxy(proxy, callback),
-            }
+            callback.handle_nonuser_event(event, &mut *self.control_flow.lock().unwrap());
         }
     }
 
@@ -180,46 +163,6 @@ impl Handler {
             callback.handle_user_events(&mut *self.control_flow.lock().unwrap());
         }
     }
-
-    fn handle_scale_factor_changed_event(
-        &self,
-        callback: &mut Box<dyn EventHandler + 'static>,
-        ns_window: IdRef,
-        suggested_size: LogicalSize<f64>,
-        scale_factor: f64,
-    ) {
-        let mut size = suggested_size.to_physical(scale_factor);
-        let new_inner_size = &mut size;
-        let event = Event::WindowEvent {
-            window_id: WindowId(get_window_id(*ns_window)),
-            event: WindowEvent::ScaleFactorChanged {
-                scale_factor,
-                new_inner_size,
-            },
-        };
-
-        callback.handle_nonuser_event(event, &mut *self.control_flow.lock().unwrap());
-
-        let physical_size = *new_inner_size;
-        let logical_size = physical_size.to_logical(scale_factor);
-        let size = NSSize::new(logical_size.width, logical_size.height);
-        unsafe { NSWindow::setContentSize_(*ns_window, size) };
-    }
-
-    fn handle_proxy(&self, proxy: EventProxy, callback: &mut Box<dyn EventHandler + 'static>) {
-        match proxy {
-            EventProxy::DpiChangedProxy {
-                ns_window,
-                suggested_size,
-                scale_factor,
-            } => self.handle_scale_factor_changed_event(
-                callback,
-                ns_window,
-                suggested_size,
-                scale_factor,
-            ),
-        }
-    }
 }
 
 pub enum AppState {}
@@ -228,7 +171,7 @@ impl AppState {
     // This function extends lifetime of `callback` to 'static as its side effect
     pub unsafe fn set_callback<F, T>(callback: F, window_target: Rc<RootWindowTarget<T>>)
     where
-        F: FnMut(Event<'_, T>, &RootWindowTarget<T>, &mut ControlFlow),
+        F: FnMut(Event<T>, &RootWindowTarget<T>, &mut ControlFlow),
     {
         *HANDLER.callback.lock().unwrap() = Some(Box::new(EventLoopHandler {
             // This transmute is always safe, in case it was reached through `run`, since our
@@ -236,8 +179,8 @@ impl AppState {
             // they passed to callback will actually outlive it, some apps just can't move
             // everything to event loop, so this is something that they should care about.
             callback: mem::transmute::<
-                Box<dyn FnMut(Event<'_, T>, &RootWindowTarget<T>, &mut ControlFlow)>,
-                Box<dyn FnMut(Event<'_, T>, &RootWindowTarget<T>, &mut ControlFlow)>,
+                Box<dyn FnMut(Event<T>, &RootWindowTarget<T>, &mut ControlFlow)>,
+                Box<dyn FnMut(Event<T>, &RootWindowTarget<T>, &mut ControlFlow)>,
             >(Box::new(callback)),
             will_exit: false,
             window_target,
@@ -246,7 +189,7 @@ impl AppState {
 
     pub fn exit() {
         HANDLER.set_in_callback(true);
-        HANDLER.handle_nonuser_event(EventWrapper::StaticEvent(Event::LoopDestroyed));
+        HANDLER.handle_nonuser_event(Event::LoopDestroyed);
         HANDLER.set_in_callback(false);
         HANDLER.callback.lock().unwrap().take();
     }
@@ -255,9 +198,7 @@ impl AppState {
         HANDLER.set_ready();
         HANDLER.waker().start();
         HANDLER.set_in_callback(true);
-        HANDLER.handle_nonuser_event(EventWrapper::StaticEvent(Event::NewEvents(
-            StartCause::Init,
-        )));
+        HANDLER.handle_nonuser_event(Event::NewEvents(StartCause::Init));
         HANDLER.set_in_callback(false);
     }
 
@@ -288,7 +229,7 @@ impl AppState {
             ControlFlow::Exit => StartCause::Poll, //panic!("unexpected `ControlFlow::Exit`"),
         };
         HANDLER.set_in_callback(true);
-        HANDLER.handle_nonuser_event(EventWrapper::StaticEvent(Event::NewEvents(cause)));
+        HANDLER.handle_nonuser_event(Event::NewEvents(cause));
         HANDLER.set_in_callback(false);
     }
 
@@ -300,18 +241,18 @@ impl AppState {
         }
     }
 
-    pub fn queue_event(wrapper: EventWrapper) {
+    pub fn queue_event(event: Event<Never>) {
         if !unsafe { msg_send![class!(NSThread), isMainThread] } {
-            panic!("Event queued from different thread: {:#?}", wrapper);
+            panic!("Event queued from different thread: {:#?}", event);
         }
-        HANDLER.events().push_back(wrapper);
+        HANDLER.events().push_back(event);
     }
 
-    pub fn queue_events(mut wrappers: VecDeque<EventWrapper>) {
+    pub fn queue_events(mut events: VecDeque<Event<Never>>) {
         if !unsafe { msg_send![class!(NSThread), isMainThread] } {
-            panic!("Events queued from different thread: {:#?}", wrappers);
+            panic!("Events queued from different thread: {:#?}", events);
         }
-        HANDLER.events().append(&mut wrappers);
+        HANDLER.events().append(&mut events);
     }
 
     pub fn cleared() {
@@ -324,39 +265,18 @@ impl AppState {
             for event in HANDLER.take_events() {
                 HANDLER.handle_nonuser_event(event);
             }
-            HANDLER.handle_nonuser_event(EventWrapper::StaticEvent(Event::MainEventsCleared));
             for window_id in HANDLER.should_redraw() {
-                HANDLER.handle_nonuser_event(EventWrapper::StaticEvent(Event::RedrawRequested(
+                HANDLER.handle_nonuser_event(Event::WindowEvent {
                     window_id,
-                )));
+                    event: WindowEvent::RedrawRequested,
+                });
             }
-            HANDLER.handle_nonuser_event(EventWrapper::StaticEvent(Event::RedrawEventsCleared));
+            HANDLER.handle_nonuser_event(Event::EventsCleared);
             HANDLER.set_in_callback(false);
         }
         if HANDLER.should_exit() {
-            unsafe {
-                let _: () = msg_send![NSApp(), stop: nil];
-
-                let pool = NSAutoreleasePool::new(nil);
-
-                let windows: *const Object = msg_send![NSApp(), windows];
-                let window: *const Object = msg_send![windows, objectAtIndex:0];
-                assert_ne!(window, nil);
-
-                let title: *const Object = msg_send![window, title];
-                assert_ne!(title, nil);
-                let postfix = NSString::alloc(nil).init_str("*");
-                let some_unique_title: *const Object =
-                    msg_send![title, stringByAppendingString: postfix];
-                assert_ne!(some_unique_title, nil);
-
-                // To stop event loop immediately, we need to send some UI event here.
-                let _: () = msg_send![window, setTitle: some_unique_title];
-                // And restore it.
-                let _: () = msg_send![window, setTitle: title];
-
-                pool.drain();
-            };
+            let _: () = unsafe { msg_send![NSApp(), terminate: nil] };
+            return;
         }
         HANDLER.update_start_time();
         match HANDLER.get_old_and_new_control_flow() {

src/platform_impl/macos/event.rs

@@ -6,29 +6,10 @@ use cocoa::{
 };
 
 use crate::{
-    dpi::LogicalSize,
-    event::{ElementState, Event, KeyboardInput, ModifiersState, VirtualKeyCode, WindowEvent},
-    platform_impl::platform::{
-        util::{IdRef, Never},
-        DEVICE_ID,
-    },
+    event::{ElementState, KeyboardInput, ModifiersState, VirtualKeyCode, WindowEvent},
+    platform_impl::platform::DEVICE_ID,
 };
 
-#[derive(Debug)]
-pub enum EventWrapper {
-    StaticEvent(Event<'static, Never>),
-    EventProxy(EventProxy),
-}
-
-#[derive(Debug, PartialEq)]
-pub enum EventProxy {
-    DpiChangedProxy {
-        ns_window: IdRef,
-        suggested_size: LogicalSize<f64>,
-        scale_factor: f64,
-    },
-}
-
 pub fn char_to_keycode(c: char) -> Option<VirtualKeyCode> {
     // We only translate keys that are affected by keyboard layout.
     //
@@ -243,24 +224,12 @@ pub fn check_function_keys(string: &str) -> Option<VirtualKeyCode> {
 
 pub fn event_mods(event: id) -> ModifiersState {
     let flags = unsafe { NSEvent::modifierFlags(event) };
-    let mut m = ModifiersState::empty();
-    m.set(
-        ModifiersState::SHIFT,
-        flags.contains(NSEventModifierFlags::NSShiftKeyMask),
-    );
-    m.set(
-        ModifiersState::CTRL,
-        flags.contains(NSEventModifierFlags::NSControlKeyMask),
-    );
-    m.set(
-        ModifiersState::ALT,
-        flags.contains(NSEventModifierFlags::NSAlternateKeyMask),
-    );
-    m.set(
-        ModifiersState::LOGO,
-        flags.contains(NSEventModifierFlags::NSCommandKeyMask),
-    );
-    m
+    ModifiersState {
+        shift: flags.contains(NSEventModifierFlags::NSShiftKeyMask),
+        ctrl: flags.contains(NSEventModifierFlags::NSControlKeyMask),
+        alt: flags.contains(NSEventModifierFlags::NSAlternateKeyMask),
+        logo: flags.contains(NSEventModifierFlags::NSCommandKeyMask),
+    }
 }
 
 pub fn get_scancode(event: cocoa::base::id) -> c_ushort {
@@ -275,7 +244,7 @@ pub unsafe fn modifier_event(
     ns_event: id,
     keymask: NSEventModifierFlags,
     was_key_pressed: bool,
-) -> Option<WindowEvent<'static>> {
+) -> Option<WindowEvent> {
     if !was_key_pressed && NSEvent::modifierFlags(ns_event).contains(keymask)
         || was_key_pressed && !NSEvent::modifierFlags(ns_event).contains(keymask)
     {
@@ -295,7 +264,6 @@ pub unsafe fn modifier_event(
                 virtual_keycode,
                 modifiers: event_mods(ns_event),
             },
-            is_synthetic: false,
         })
     } else {
         None

src/platform_impl/macos/event_loop.rs

@@ -84,7 +84,7 @@ impl<T> EventLoop<T> {
 
     pub fn run<F>(mut self, callback: F) -> !
     where
-        F: 'static + FnMut(Event<'_, T>, &RootWindowTarget<T>, &mut ControlFlow),
+        F: 'static + FnMut(Event<T>, &RootWindowTarget<T>, &mut ControlFlow),
     {
         self.run_return(callback);
         process::exit(0);
@@ -92,16 +92,15 @@ impl<T> EventLoop<T> {
 
     pub fn run_return<F>(&mut self, callback: F)
     where
-        F: FnMut(Event<'_, T>, &RootWindowTarget<T>, &mut ControlFlow),
+        F: FnMut(Event<T>, &RootWindowTarget<T>, &mut ControlFlow),
     {
         unsafe {
-            let pool = NSAutoreleasePool::new(nil);
+            let _pool = NSAutoreleasePool::new(nil);
             let app = NSApp();
             assert_ne!(app, nil);
             AppState::set_callback(callback, Rc::clone(&self.window_target));
             let _: () = msg_send![app, run];
             AppState::exit();
-            pool.drain();
         }
     }
 
@@ -143,10 +142,8 @@ impl<T> Proxy<T> {
         }
     }
 
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
-        self.sender
-            .send(event)
-            .map_err(|mpsc::SendError(x)| EventLoopClosed(x))?;
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
+        self.sender.send(event).map_err(|_| EventLoopClosed)?;
         unsafe {
             // let the main thread know there's a new event
             CFRunLoopSourceSignal(self.source);

src/platform_impl/macos/monitor.rs

@@ -84,7 +84,7 @@ impl Clone for NativeDisplayMode {
 }
 
 impl VideoMode {
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         self.size.into()
     }
 
@@ -166,9 +166,9 @@ impl fmt::Debug for MonitorHandle {
         struct MonitorHandle {
             name: Option<String>,
             native_identifier: u32,
-            size: PhysicalSize<u32>,
-            position: PhysicalPosition<i32>,
-            scale_factor: f64,
+            size: PhysicalSize,
+            position: PhysicalPosition,
+            hidpi_factor: f64,
         }
 
         let monitor_id_proxy = MonitorHandle {
@@ -176,7 +176,7 @@ impl fmt::Debug for MonitorHandle {
             native_identifier: self.native_identifier(),
             size: self.size(),
             position: self.position(),
-            scale_factor: self.scale_factor(),
+            hidpi_factor: self.hidpi_factor(),
         };
 
         monitor_id_proxy.fmt(f)
@@ -199,24 +199,24 @@ impl MonitorHandle {
         self.0
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         let MonitorHandle(display_id) = *self;
         let display = CGDisplay::new(display_id);
         let height = display.pixels_high();
         let width = display.pixels_wide();
-        PhysicalSize::from_logical::<_, f64>((width as f64, height as f64), self.scale_factor())
+        PhysicalSize::from_logical((width as f64, height as f64), self.hidpi_factor())
     }
 
     #[inline]
-    pub fn position(&self) -> PhysicalPosition<i32> {
+    pub fn position(&self) -> PhysicalPosition {
         let bounds = unsafe { CGDisplayBounds(self.native_identifier()) };
-        PhysicalPosition::from_logical::<_, f64>(
+        PhysicalPosition::from_logical(
             (bounds.origin.x as f64, bounds.origin.y as f64),
-            self.scale_factor(),
+            self.hidpi_factor(),
         )
     }
 
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         let screen = match self.ns_screen() {
             Some(screen) => screen,
             None => return 1.0, // default to 1.0 when we can't find the screen

src/platform_impl/macos/util/async.rs

@@ -60,23 +60,19 @@ pub unsafe fn set_style_mask_async(ns_window: id, ns_view: id, mask: NSWindowSty
 }
 pub unsafe fn set_style_mask_sync(ns_window: id, ns_view: id, mask: NSWindowStyleMask) {
     let context = SetStyleMaskData::new_ptr(ns_window, ns_view, mask);
-    if msg_send![class!(NSThread), isMainThread] {
-        set_style_mask_callback(context as *mut _);
-    } else {
-        dispatch_sync_f(
-            dispatch_get_main_queue(),
-            context as *mut _,
-            set_style_mask_callback,
-        );
-    }
+    dispatch_sync_f(
+        dispatch_get_main_queue(),
+        context as *mut _,
+        set_style_mask_callback,
+    );
 }
 
 struct SetContentSizeData {
     ns_window: id,
-    size: LogicalSize<f64>,
+    size: LogicalSize,
 }
 impl SetContentSizeData {
-    fn new_ptr(ns_window: id, size: LogicalSize<f64>) -> *mut Self {
+    fn new_ptr(ns_window: id, size: LogicalSize) -> *mut Self {
         Box::into_raw(Box::new(SetContentSizeData { ns_window, size }))
     }
 }
@@ -98,7 +94,7 @@ extern "C" fn set_content_size_callback(context: *mut c_void) {
 }
 // `setContentSize:` isn't thread-safe either, though it doesn't log any errors
 // and just fails silently. Anyway, GCD to the rescue!
-pub unsafe fn set_content_size_async(ns_window: id, size: LogicalSize<f64>) {
+pub unsafe fn set_content_size_async(ns_window: id, size: LogicalSize) {
     let context = SetContentSizeData::new_ptr(ns_window, size);
     dispatch_async_f(
         dispatch_get_main_queue(),

src/platform_impl/macos/util/cursor.rs

@@ -3,8 +3,7 @@ use cocoa::{
     base::{id, nil},
     foundation::{NSDictionary, NSPoint, NSString},
 };
-use objc::{runtime::Sel, runtime::NO};
-use std::cell::RefCell;
+use objc::runtime::Sel;
 
 use crate::window::CursorIcon;
 
@@ -127,38 +126,3 @@ pub unsafe fn load_webkit_cursor(cursor_name: &str) -> id {
         hotSpot:point
     ]
 }
-
-pub unsafe fn invisible_cursor() -> id {
-    // 16x16 GIF data for invisible cursor
-    // You can reproduce this via ImageMagick.
-    // $ convert -size 16x16 xc:none cursor.gif
-    static CURSOR_BYTES: &[u8] = &[
-        0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x10, 0x00, 0x10, 0x00, 0xF0, 0x00, 0x00, 0x00, 0x00,
-        0x00, 0x00, 0x00, 0x00, 0x21, 0xF9, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x2C, 0x00, 0x00,
-        0x00, 0x00, 0x10, 0x00, 0x10, 0x00, 0x00, 0x02, 0x0E, 0x84, 0x8F, 0xA9, 0xCB, 0xED, 0x0F,
-        0xA3, 0x9C, 0xB4, 0xDA, 0x8B, 0xB3, 0x3E, 0x05, 0x00, 0x3B,
-    ];
-
-    thread_local! {
-        // We can't initialize this at startup.
-        static CURSOR_OBJECT: RefCell<id> = RefCell::new(nil);
-    }
-
-    CURSOR_OBJECT.with(|cursor_obj| {
-        if *cursor_obj.borrow() == nil {
-            // Create a cursor from `CURSOR_BYTES`
-            let cursor_data: id = msg_send![class!(NSData),
-                dataWithBytesNoCopy:CURSOR_BYTES as *const [u8]
-                length:CURSOR_BYTES.len()
-                freeWhenDone:NO
-            ];
-
-            let ns_image: id = msg_send![class!(NSImage), alloc];
-            let _: id = msg_send![ns_image, initWithData: cursor_data];
-            let cursor: id = msg_send![class!(NSCursor), alloc];
-            *cursor_obj.borrow_mut() =
-                msg_send![cursor, initWithImage:ns_image hotSpot: NSPoint::new(0.0, 0.0)];
-        }
-        *cursor_obj.borrow()
-    })
-}

src/platform_impl/macos/util/mod.rs

@@ -31,7 +31,6 @@ pub const EMPTY_RANGE: ffi::NSRange = ffi::NSRange {
     length: 0,
 };
 
-#[derive(Debug, PartialEq)]
 pub struct IdRef(id);
 
 impl IdRef {

src/platform_impl/macos/view.rs

@@ -9,7 +9,7 @@ use std::{
 use cocoa::{
     appkit::{NSApp, NSEvent, NSEventModifierFlags, NSEventPhase, NSView, NSWindow},
     base::{id, nil},
-    foundation::{NSInteger, NSPoint, NSRect, NSSize, NSString, NSUInteger},
+    foundation::{NSPoint, NSRect, NSSize, NSString, NSUInteger},
 };
 use objc::{
     declare::ClassDecl,
@@ -18,14 +18,14 @@ use objc::{
 
 use crate::{
     event::{
-        DeviceEvent, ElementState, Event, KeyboardInput, ModifiersState, MouseButton,
-        MouseScrollDelta, TouchPhase, VirtualKeyCode, WindowEvent,
+        DeviceEvent, ElementState, Event, KeyboardInput, MouseButton, MouseScrollDelta, TouchPhase,
+        VirtualKeyCode, WindowEvent,
     },
     platform_impl::platform::{
         app_state::AppState,
         event::{
             char_to_keycode, check_function_keys, event_mods, get_scancode, modifier_event,
-            scancode_to_keycode, EventWrapper,
+            scancode_to_keycode,
         },
         ffi::*,
         util::{self, IdRef},
@@ -35,41 +35,33 @@ use crate::{
     window::WindowId,
 };
 
-pub struct CursorState {
-    pub visible: bool,
-    pub cursor: util::Cursor,
-}
-
-impl Default for CursorState {
-    fn default() -> Self {
-        Self {
-            visible: true,
-            cursor: Default::default(),
-        }
-    }
+#[derive(Default)]
+struct Modifiers {
+    shift_pressed: bool,
+    ctrl_pressed: bool,
+    win_pressed: bool,
+    alt_pressed: bool,
 }
 
 struct ViewState {
     ns_window: id,
-    pub cursor_state: Arc<Mutex<CursorState>>,
+    pub cursor: Arc<Mutex<util::Cursor>>,
     ime_spot: Option<(f64, f64)>,
     raw_characters: Option<String>,
     is_key_down: bool,
-    modifiers: ModifiersState,
-    tracking_rect: Option<NSInteger>,
+    modifiers: Modifiers,
 }
 
-pub fn new_view(ns_window: id) -> (IdRef, Weak<Mutex<CursorState>>) {
-    let cursor_state = Default::default();
-    let cursor_access = Arc::downgrade(&cursor_state);
+pub fn new_view(ns_window: id) -> (IdRef, Weak<Mutex<util::Cursor>>) {
+    let cursor = Default::default();
+    let cursor_access = Arc::downgrade(&cursor);
     let state = ViewState {
         ns_window,
-        cursor_state,
+        cursor,
         ime_spot: None,
         raw_characters: None,
         is_key_down: false,
         modifiers: Default::default(),
-        tracking_rect: None,
     };
     unsafe {
         // This is free'd in `dealloc`
@@ -244,10 +236,6 @@ lazy_static! {
             sel!(cancelOperation:),
             cancel_operation as extern "C" fn(&Object, Sel, id),
         );
-        decl.add_method(
-            sel!(frameDidChange:),
-            frame_did_change as extern "C" fn(&Object, Sel, id),
-        );
         decl.add_ivar::<*mut c_void>("winitState");
         decl.add_ivar::<id>("markedText");
         let protocol = Protocol::get("NSTextInputClient").unwrap();
@@ -273,19 +261,6 @@ extern "C" fn init_with_winit(this: &Object, _sel: Sel, state: *mut c_void) -> i
             let marked_text =
                 <id as NSMutableAttributedString>::init(NSMutableAttributedString::alloc(nil));
             (*this).set_ivar("markedText", marked_text);
-            let _: () = msg_send![this, setPostsFrameChangedNotifications: YES];
-
-            let notification_center: &Object =
-                msg_send![class!(NSNotificationCenter), defaultCenter];
-            let notification_name =
-                NSString::alloc(nil).init_str("NSViewFrameDidChangeNotification");
-            let _: () = msg_send![
-                notification_center,
-                addObserver: this
-                selector: sel!(frameDidChange:)
-                name: notification_name
-                object: this
-            ];
         }
         this
     }
@@ -294,46 +269,17 @@ extern "C" fn init_with_winit(this: &Object, _sel: Sel, state: *mut c_void) -> i
 extern "C" fn view_did_move_to_window(this: &Object, _sel: Sel) {
     trace!("Triggered `viewDidMoveToWindow`");
     unsafe {
-        let state_ptr: *mut c_void = *this.get_ivar("winitState");
-        let state = &mut *(state_ptr as *mut ViewState);
-
-        if let Some(tracking_rect) = state.tracking_rect.take() {
-            let _: () = msg_send![this, removeTrackingRect: tracking_rect];
-        }
-
         let rect: NSRect = msg_send![this, visibleRect];
-        let tracking_rect: NSInteger = msg_send![this,
+        let _: () = msg_send![this,
             addTrackingRect:rect
             owner:this
             userData:nil
             assumeInside:NO
         ];
-        state.tracking_rect = Some(tracking_rect);
     }
     trace!("Completed `viewDidMoveToWindow`");
 }
 
-extern "C" fn frame_did_change(this: &Object, _sel: Sel, _event: id) {
-    unsafe {
-        let state_ptr: *mut c_void = *this.get_ivar("winitState");
-        let state = &mut *(state_ptr as *mut ViewState);
-
-        if let Some(tracking_rect) = state.tracking_rect.take() {
-            let _: () = msg_send![this, removeTrackingRect: tracking_rect];
-        }
-
-        let rect: NSRect = msg_send![this, visibleRect];
-        let tracking_rect: NSInteger = msg_send![this,
-            addTrackingRect:rect
-            owner:this
-            userData:nil
-            assumeInside:NO
-        ];
-
-        state.tracking_rect = Some(tracking_rect);
-    }
-}
-
 extern "C" fn draw_rect(this: &Object, _sel: Sel, rect: NSRect) {
     unsafe {
         let state_ptr: *mut c_void = *this.get_ivar("winitState");
@@ -363,12 +309,7 @@ extern "C" fn reset_cursor_rects(this: &Object, _sel: Sel) {
         let state = &mut *(state_ptr as *mut ViewState);
 
         let bounds: NSRect = msg_send![this, bounds];
-        let cursor_state = state.cursor_state.lock().unwrap();
-        let cursor = if cursor_state.visible {
-            cursor_state.cursor.load()
-        } else {
-            util::invisible_cursor()
-        };
+        let cursor = state.cursor.lock().unwrap().load();
         let _: () = msg_send![this,
             addCursorRect:bounds
             cursor:cursor
@@ -512,10 +453,10 @@ extern "C" fn insert_text(this: &Object, _sel: Sel, string: id, _replacement_ran
 
         let mut events = VecDeque::with_capacity(characters.len());
         for character in string.chars().filter(|c| !is_corporate_character(*c)) {
-            events.push_back(EventWrapper::StaticEvent(Event::WindowEvent {
+            events.push_back(Event::WindowEvent {
                 window_id: WindowId(get_window_id(state.ns_window)),
                 event: WindowEvent::ReceivedCharacter(character),
-            }));
+            });
         }
 
         AppState::queue_events(events);
@@ -536,10 +477,10 @@ extern "C" fn do_command_by_selector(this: &Object, _sel: Sel, command: Sel) {
             // The `else` condition would emit the same character, but I'm keeping this here both...
             // 1) as a reminder for how `doCommandBySelector` works
             // 2) to make our use of carriage return explicit
-            events.push_back(EventWrapper::StaticEvent(Event::WindowEvent {
+            events.push_back(Event::WindowEvent {
                 window_id: WindowId(get_window_id(state.ns_window)),
                 event: WindowEvent::ReceivedCharacter('\r'),
-            }));
+            });
         } else {
             let raw_characters = state.raw_characters.take();
             if let Some(raw_characters) = raw_characters {
@@ -547,10 +488,10 @@ extern "C" fn do_command_by_selector(this: &Object, _sel: Sel, command: Sel) {
                     .chars()
                     .filter(|c| !is_corporate_character(*c))
                 {
-                    events.push_back(EventWrapper::StaticEvent(Event::WindowEvent {
+                    events.push_back(Event::WindowEvent {
                         window_id: WindowId(get_window_id(state.ns_window)),
                         event: WindowEvent::ReceivedCharacter(character),
-                    }));
+                    });
                 }
             }
         };
@@ -641,19 +582,18 @@ extern "C" fn key_down(this: &Object, _sel: Sel, event: id) {
                     virtual_keycode,
                     modifiers: event_mods(event),
                 },
-                is_synthetic: false,
             },
         };
 
         let pass_along = {
-            AppState::queue_event(EventWrapper::StaticEvent(window_event));
+            AppState::queue_event(window_event);
             // Emit `ReceivedCharacter` for key repeats
             if is_repeat && state.is_key_down {
                 for character in characters.chars().filter(|c| !is_corporate_character(*c)) {
-                    AppState::queue_event(EventWrapper::StaticEvent(Event::WindowEvent {
+                    AppState::queue_event(Event::WindowEvent {
                         window_id,
                         event: WindowEvent::ReceivedCharacter(character),
-                    }));
+                    });
                 }
                 false
             } else {
@@ -693,11 +633,10 @@ extern "C" fn key_up(this: &Object, _sel: Sel, event: id) {
                     virtual_keycode,
                     modifiers: event_mods(event),
                 },
-                is_synthetic: false,
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(window_event);
     }
     trace!("Completed `keyUp`");
 }
@@ -713,50 +652,45 @@ extern "C" fn flags_changed(this: &Object, _sel: Sel, event: id) {
         if let Some(window_event) = modifier_event(
             event,
             NSEventModifierFlags::NSShiftKeyMask,
-            state.modifiers.shift(),
+            state.modifiers.shift_pressed,
         ) {
-            state.modifiers.toggle(ModifiersState::SHIFT);
+            state.modifiers.shift_pressed = !state.modifiers.shift_pressed;
             events.push_back(window_event);
         }
 
         if let Some(window_event) = modifier_event(
             event,
             NSEventModifierFlags::NSControlKeyMask,
-            state.modifiers.ctrl(),
+            state.modifiers.ctrl_pressed,
         ) {
-            state.modifiers.toggle(ModifiersState::CTRL);
+            state.modifiers.ctrl_pressed = !state.modifiers.ctrl_pressed;
             events.push_back(window_event);
         }
 
         if let Some(window_event) = modifier_event(
             event,
             NSEventModifierFlags::NSCommandKeyMask,
-            state.modifiers.logo(),
+            state.modifiers.win_pressed,
         ) {
-            state.modifiers.toggle(ModifiersState::LOGO);
+            state.modifiers.win_pressed = !state.modifiers.win_pressed;
             events.push_back(window_event);
         }
 
         if let Some(window_event) = modifier_event(
             event,
             NSEventModifierFlags::NSAlternateKeyMask,
-            state.modifiers.alt(),
+            state.modifiers.alt_pressed,
         ) {
-            state.modifiers.toggle(ModifiersState::ALT);
+            state.modifiers.alt_pressed = !state.modifiers.alt_pressed;
             events.push_back(window_event);
         }
 
         for event in events {
-            AppState::queue_event(EventWrapper::StaticEvent(Event::WindowEvent {
+            AppState::queue_event(Event::WindowEvent {
                 window_id: WindowId(get_window_id(state.ns_window)),
                 event,
-            }));
+            });
         }
-
-        AppState::queue_event(EventWrapper::StaticEvent(Event::DeviceEvent {
-            device_id: DEVICE_ID,
-            event: DeviceEvent::ModifiersChanged(state.modifiers),
-        }));
     }
     trace!("Completed `flagsChanged`");
 }
@@ -807,11 +741,10 @@ extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
                     virtual_keycode,
                     modifiers: event_mods(event),
                 },
-                is_synthetic: false,
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(window_event);
     }
     trace!("Completed `cancelOperation`");
 }
@@ -831,7 +764,7 @@ fn mouse_click(this: &Object, event: id, button: MouseButton, button_state: Elem
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(window_event);
     }
 }
 
@@ -892,7 +825,7 @@ fn mouse_motion(this: &Object, event: id) {
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(window_event);
     }
 }
 
@@ -944,8 +877,8 @@ extern "C" fn mouse_entered(this: &Object, _sel: Sel, event: id) {
             }
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(enter_event));
-        AppState::queue_event(EventWrapper::StaticEvent(move_event));
+        AppState::queue_event(enter_event);
+        AppState::queue_event(move_event);
     }
     trace!("Completed `mouseEntered`");
 }
@@ -963,7 +896,7 @@ extern "C" fn mouse_exited(this: &Object, _sel: Sel, _event: id) {
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(window_event);
     }
     trace!("Completed `mouseExited`");
 }
@@ -1005,8 +938,8 @@ extern "C" fn scroll_wheel(this: &Object, _sel: Sel, event: id) {
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(device_event));
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(device_event);
+        AppState::queue_event(window_event);
     }
     trace!("Completed `scrollWheel`");
 }
@@ -1029,7 +962,7 @@ extern "C" fn pressure_change_with_event(this: &Object, _sel: Sel, event: id) {
             },
         };
 
-        AppState::queue_event(EventWrapper::StaticEvent(window_event));
+        AppState::queue_event(window_event);
     }
     trace!("Completed `pressureChangeWithEvent`");
 }

src/platform_impl/macos/window.rs

@@ -10,9 +10,7 @@ use std::{
 };
 
 use crate::{
-    dpi::{
-        LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size, Size::Logical,
-    },
+    dpi::{LogicalPosition, LogicalSize},
     error::{ExternalError, NotSupportedError, OsError as RootOsError},
     icon::Icon,
     monitor::{MonitorHandle as RootMonitorHandle, VideoMode as RootVideoMode},
@@ -22,7 +20,6 @@ use crate::{
         ffi,
         monitor::{self, MonitorHandle, VideoMode},
         util::{self, IdRef},
-        view::CursorState,
         view::{self, new_view},
         window_delegate::new_delegate,
         OsError,
@@ -68,7 +65,7 @@ pub struct PlatformSpecificWindowBuilderAttributes {
     pub titlebar_hidden: bool,
     pub titlebar_buttons_hidden: bool,
     pub fullsize_content_view: bool,
-    pub resize_increments: Option<LogicalSize<f64>>,
+    pub resize_increments: Option<LogicalSize>,
     pub disallow_hidpi: bool,
 }
 
@@ -93,8 +90,8 @@ fn create_app(activation_policy: ActivationPolicy) -> Option<id> {
 unsafe fn create_view(
     ns_window: id,
     pl_attribs: &PlatformSpecificWindowBuilderAttributes,
-) -> Option<(IdRef, Weak<Mutex<CursorState>>)> {
-    let (ns_view, cursor_state) = new_view(ns_window);
+) -> Option<(IdRef, Weak<Mutex<util::Cursor>>)> {
+    let (ns_view, cursor) = new_view(ns_window);
     ns_view.non_nil().map(|ns_view| {
         if !pl_attribs.disallow_hidpi {
             ns_view.setWantsBestResolutionOpenGLSurface_(YES);
@@ -111,7 +108,7 @@ unsafe fn create_view(
 
         ns_window.setContentView_(*ns_view);
         ns_window.makeFirstResponder_(*ns_view);
-        (ns_view, cursor_state)
+        (ns_view, cursor)
     })
 }
 
@@ -132,17 +129,12 @@ fn create_window(
             None => None,
         };
         let frame = match screen {
-            Some(screen) => NSScreen::frame(screen),
+            Some(screen) => appkit::NSScreen::frame(screen),
             None => {
-                let screen = NSScreen::mainScreen(nil);
-                let scale_factor = NSScreen::backingScaleFactor(screen) as f64;
-                let (width, height) = match attrs.inner_size {
-                    Some(size) => {
-                        let logical = size.to_logical(scale_factor);
-                        (logical.width, logical.height)
-                    }
-                    None => (800.0, 600.0),
-                };
+                let (width, height) = attrs
+                    .inner_size
+                    .map(|logical| (logical.width, logical.height))
+                    .unwrap_or_else(|| (800.0, 600.0));
                 NSRect::new(NSPoint::new(0.0, 0.0), NSSize::new(width, height))
             }
         };
@@ -251,13 +243,6 @@ lazy_static! {
 pub struct SharedState {
     pub resizable: bool,
     pub fullscreen: Option<Fullscreen>,
-    // This is true between windowWillEnterFullScreen and windowDidEnterFullScreen
-    // or windowWillExitFullScreen and windowDidExitFullScreen.
-    // We must not toggle fullscreen when this is true.
-    pub in_fullscreen_transition: bool,
-    // If it is attempted to toggle fullscreen when in_fullscreen_transition is true,
-    // Set target_fullscreen and do after fullscreen transition is end.
-    pub target_fullscreen: Option<Option<Fullscreen>>,
     pub maximized: bool,
     pub standard_frame: Option<NSRect>,
     is_simple_fullscreen: bool,
@@ -298,8 +283,8 @@ pub struct UnownedWindow {
     input_context: IdRef, // never changes
     pub shared_state: Arc<Mutex<SharedState>>,
     decorations: AtomicBool,
-    cursor_state: Weak<Mutex<CursorState>>,
-    pub inner_rect: Option<PhysicalSize<u32>>,
+    cursor: Weak<Mutex<util::Cursor>>,
+    cursor_visible: AtomicBool,
 }
 
 unsafe impl Send for UnownedWindow {}
@@ -328,7 +313,7 @@ impl UnownedWindow {
             os_error!(OsError::CreationError("Couldn't create `NSWindow`"))
         })?;
 
-        let (ns_view, cursor_state) =
+        let (ns_view, cursor) =
             unsafe { create_view(*ns_window, &pl_attribs) }.ok_or_else(|| {
                 unsafe { pool.drain() };
                 os_error!(OsError::CreationError("Couldn't create `NSView`"))
@@ -336,8 +321,6 @@ impl UnownedWindow {
 
         let input_context = unsafe { util::create_input_context(*ns_view) };
 
-        let dpi_factor = unsafe { NSWindow::backingScaleFactor(*ns_window) as f64 };
-
         unsafe {
             if win_attribs.transparent {
                 ns_window.setOpaque_(NO);
@@ -345,14 +328,13 @@ impl UnownedWindow {
             }
 
             ns_app.activateIgnoringOtherApps_(YES);
-            win_attribs.min_inner_size.map(|dim| {
-                let logical_dim = dim.to_logical(dpi_factor);
-                set_min_inner_size(*ns_window, logical_dim)
-            });
-            win_attribs.max_inner_size.map(|dim| {
-                let logical_dim = dim.to_logical(dpi_factor);
-                set_max_inner_size(*ns_window, logical_dim)
-            });
+
+            win_attribs
+                .min_inner_size
+                .map(|dim| set_min_inner_size(*ns_window, dim));
+            win_attribs
+                .max_inner_size
+                .map(|dim| set_max_inner_size(*ns_window, dim));
 
             use cocoa::foundation::NSArray;
             // register for drag and drop operations.
@@ -372,9 +354,6 @@ impl UnownedWindow {
         let maximized = win_attribs.maximized;
         let visible = win_attribs.visible;
         let decorations = win_attribs.decorations;
-        let inner_rect = win_attribs
-            .inner_size
-            .map(|size| size.to_physical(dpi_factor));
 
         let window = Arc::new(UnownedWindow {
             ns_view,
@@ -382,8 +361,8 @@ impl UnownedWindow {
             input_context,
             shared_state: Arc::new(Mutex::new(win_attribs.into())),
             decorations: AtomicBool::new(decorations),
-            cursor_state,
-            inner_rect,
+            cursor,
+            cursor_visible: AtomicBool::new(true),
         });
 
         let delegate = new_delegate(&window, fullscreen.is_some());
@@ -440,31 +419,27 @@ impl UnownedWindow {
         AppState::queue_redraw(RootWindowId(self.id()));
     }
 
-    pub fn outer_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn outer_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         let frame_rect = unsafe { NSWindow::frame(*self.ns_window) };
-        let position = LogicalPosition::new(
+        Ok((
             frame_rect.origin.x as f64,
             util::bottom_left_to_top_left(frame_rect),
-        );
-        let dpi_factor = self.scale_factor();
-        Ok(position.to_physical(dpi_factor))
+        )
+            .into())
     }
 
-    pub fn inner_position(&self) -> Result<PhysicalPosition<i32>, NotSupportedError> {
+    pub fn inner_position(&self) -> Result<LogicalPosition, NotSupportedError> {
         let content_rect = unsafe {
             NSWindow::contentRectForFrameRect_(*self.ns_window, NSWindow::frame(*self.ns_window))
         };
-        let position = LogicalPosition::new(
+        Ok((
             content_rect.origin.x as f64,
             util::bottom_left_to_top_left(content_rect),
-        );
-        let dpi_factor = self.scale_factor();
-        Ok(position.to_physical(dpi_factor))
+        )
+            .into())
     }
 
-    pub fn set_outer_position(&self, position: Position) {
-        let dpi_factor = self.scale_factor();
-        let position = position.to_logical(dpi_factor);
+    pub fn set_outer_position(&self, position: LogicalPosition) {
         let dummy = NSRect::new(
             NSPoint::new(
                 position.x,
@@ -480,50 +455,35 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn inner_size(&self) -> PhysicalSize<u32> {
+    pub fn inner_size(&self) -> LogicalSize {
         let view_frame = unsafe { NSView::frame(*self.ns_view) };
-        let logical: LogicalSize<f64> =
-            (view_frame.size.width as f64, view_frame.size.height as f64).into();
-        let dpi_factor = self.scale_factor();
-        logical.to_physical(dpi_factor)
+        (view_frame.size.width as f64, view_frame.size.height as f64).into()
     }
 
     #[inline]
-    pub fn outer_size(&self) -> PhysicalSize<u32> {
+    pub fn outer_size(&self) -> LogicalSize {
         let view_frame = unsafe { NSWindow::frame(*self.ns_window) };
-        let logical: LogicalSize<f64> =
-            (view_frame.size.width as f64, view_frame.size.height as f64).into();
-        let dpi_factor = self.scale_factor();
-        logical.to_physical(dpi_factor)
+        (view_frame.size.width as f64, view_frame.size.height as f64).into()
     }
 
     #[inline]
-    pub fn set_inner_size(&self, size: Size) {
+    pub fn set_inner_size(&self, size: LogicalSize) {
         unsafe {
-            let dpi_factor = self.scale_factor();
-            util::set_content_size_async(*self.ns_window, size.to_logical(dpi_factor));
+            util::set_content_size_async(*self.ns_window, size);
         }
     }
 
-    pub fn set_min_inner_size(&self, dimensions: Option<Size>) {
+    pub fn set_min_inner_size(&self, dimensions: Option<LogicalSize>) {
         unsafe {
-            let dimensions = dimensions.unwrap_or(Logical(LogicalSize {
-                width: 0.0,
-                height: 0.0,
-            }));
-            let dpi_factor = self.scale_factor();
-            set_min_inner_size(*self.ns_window, dimensions.to_logical(dpi_factor));
+            let dimensions = dimensions.unwrap_or_else(|| (0, 0).into());
+            set_min_inner_size(*self.ns_window, dimensions);
         }
     }
 
-    pub fn set_max_inner_size(&self, dimensions: Option<Size>) {
+    pub fn set_max_inner_size(&self, dimensions: Option<LogicalSize>) {
         unsafe {
-            let dimensions = dimensions.unwrap_or(Logical(LogicalSize {
-                width: std::f32::MAX as f64,
-                height: std::f32::MAX as f64,
-            }));
-            let dpi_factor = self.scale_factor();
-            set_max_inner_size(*self.ns_window, dimensions.to_logical(dpi_factor));
+            let dimensions = dimensions.unwrap_or_else(|| (!0, !0).into());
+            set_max_inner_size(*self.ns_window, dimensions);
         }
     }
 
@@ -549,8 +509,8 @@ impl UnownedWindow {
 
     pub fn set_cursor_icon(&self, cursor: CursorIcon) {
         let cursor = util::Cursor::from(cursor);
-        if let Some(cursor_access) = self.cursor_state.upgrade() {
-            cursor_access.lock().unwrap().cursor = cursor;
+        if let Some(cursor_access) = self.cursor.upgrade() {
+            *cursor_access.lock().unwrap() = cursor;
         }
         unsafe {
             let _: () = msg_send![*self.ns_window,
@@ -568,34 +528,33 @@ impl UnownedWindow {
 
     #[inline]
     pub fn set_cursor_visible(&self, visible: bool) {
-        if let Some(cursor_access) = self.cursor_state.upgrade() {
-            let mut cursor_state = cursor_access.lock().unwrap();
-            if visible != cursor_state.visible {
-                cursor_state.visible = visible;
-                drop(cursor_state);
-                unsafe {
-                    let _: () = msg_send![*self.ns_window,
-                        invalidateCursorRectsForView:*self.ns_view
-                    ];
-                }
+        let cursor_class = class!(NSCursor);
+        // macOS uses a "hide counter" like Windows does, so we avoid incrementing it more than once.
+        // (otherwise, `hide_cursor(false)` would need to be called n times!)
+        if visible != self.cursor_visible.load(Ordering::Acquire) {
+            if visible {
+                let _: () = unsafe { msg_send![cursor_class, unhide] };
+            } else {
+                let _: () = unsafe { msg_send![cursor_class, hide] };
             }
+            self.cursor_visible.store(visible, Ordering::Release);
         }
     }
 
     #[inline]
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         unsafe { NSWindow::backingScaleFactor(*self.ns_window) as _ }
     }
 
     #[inline]
-    pub fn set_cursor_position(&self, cursor_position: Position) -> Result<(), ExternalError> {
-        let physical_window_position = self.inner_position().unwrap();
-        let dpi_factor = self.scale_factor();
-        let window_position = physical_window_position.to_logical::<CGFloat>(dpi_factor);
-        let logical_cursor_position = cursor_position.to_logical::<CGFloat>(dpi_factor);
+    pub fn set_cursor_position(
+        &self,
+        cursor_position: LogicalPosition,
+    ) -> Result<(), ExternalError> {
+        let window_position = self.inner_position().unwrap();
         let point = appkit::CGPoint {
-            x: logical_cursor_position.x + window_position.x,
-            y: logical_cursor_position.y + window_position.y,
+            x: (cursor_position.x + window_position.x) as CGFloat,
+            y: (cursor_position.y + window_position.y) as CGFloat,
         };
         CGDisplay::warp_mouse_cursor_position(point)
             .map_err(|e| ExternalError::Os(os_error!(OsError::CGError(e))))?;
@@ -658,25 +617,6 @@ impl UnownedWindow {
         self.set_maximized(maximized);
     }
 
-    #[inline]
-    pub fn set_minimized(&self, minimized: bool) {
-        let is_minimized: BOOL = unsafe { msg_send![*self.ns_window, isMiniaturized] };
-        let is_minimized: bool = is_minimized == YES;
-        if is_minimized == minimized {
-            return;
-        }
-
-        if minimized {
-            unsafe {
-                NSWindow::miniaturize_(*self.ns_window, *self.ns_window);
-            }
-        } else {
-            unsafe {
-                NSWindow::deminiaturize_(*self.ns_window, *self.ns_window);
-            }
-        }
-    }
-
     #[inline]
     pub fn set_maximized(&self, maximized: bool) {
         let is_zoomed = self.is_zoomed();
@@ -702,18 +642,11 @@ impl UnownedWindow {
     #[inline]
     pub fn set_fullscreen(&self, fullscreen: Option<Fullscreen>) {
         trace!("Locked shared state in `set_fullscreen`");
-        let mut shared_state_lock = self.shared_state.lock().unwrap();
+        let shared_state_lock = self.shared_state.lock().unwrap();
         if shared_state_lock.is_simple_fullscreen {
             trace!("Unlocked shared state in `set_fullscreen`");
             return;
         }
-        if shared_state_lock.in_fullscreen_transition {
-            // We can't set fullscreen here.
-            // Set fullscreen after transition.
-            shared_state_lock.target_fullscreen = Some(fullscreen);
-            trace!("Unlocked shared state in `set_fullscreen`");
-            return;
-        }
         let old_fullscreen = shared_state_lock.fullscreen.clone();
         if fullscreen == old_fullscreen {
             trace!("Unlocked shared state in `set_fullscreen`");
@@ -928,9 +861,7 @@ impl UnownedWindow {
     }
 
     #[inline]
-    pub fn set_ime_position(&self, spot: Position) {
-        let dpi_factor = self.scale_factor();
-        let logical_spot = spot.to_logical(dpi_factor);
+    pub fn set_ime_position(&self, logical_spot: LogicalPosition) {
         unsafe {
             view::set_ime_position(
                 *self.ns_view,
@@ -1095,7 +1026,7 @@ impl Drop for UnownedWindow {
     }
 }
 
-unsafe fn set_min_inner_size<V: NSWindow + Copy>(window: V, mut min_size: LogicalSize<f64>) {
+unsafe fn set_min_inner_size<V: NSWindow + Copy>(window: V, mut min_size: LogicalSize) {
     let mut current_rect = NSWindow::frame(window);
     let content_rect = NSWindow::contentRectForFrameRect_(window, NSWindow::frame(window));
     // Convert from client area size to window size
@@ -1119,7 +1050,7 @@ unsafe fn set_min_inner_size<V: NSWindow + Copy>(window: V, mut min_size: Logica
     }
 }
 
-unsafe fn set_max_inner_size<V: NSWindow + Copy>(window: V, mut max_size: LogicalSize<f64>) {
+unsafe fn set_max_inner_size<V: NSWindow + Copy>(window: V, mut max_size: LogicalSize) {
     let mut current_rect = NSWindow::frame(window);
     let content_rect = NSWindow::contentRectForFrameRect_(window, NSWindow::frame(window));
     // Convert from client area size to window size

src/platform_impl/macos/window_delegate.rs

@@ -19,7 +19,6 @@ use crate::{
     event::{Event, WindowEvent},
     platform_impl::platform::{
         app_state::AppState,
-        event::{EventProxy, EventWrapper},
         util::{self, IdRef},
         window::{get_window_id, UnownedWindow},
     },
@@ -48,18 +47,20 @@ pub struct WindowDelegateState {
 
 impl WindowDelegateState {
     pub fn new(window: &Arc<UnownedWindow>, initial_fullscreen: bool) -> Self {
-        let scale_factor = window.scale_factor();
+        let dpi_factor = window.hidpi_factor();
+
         let mut delegate_state = WindowDelegateState {
             ns_window: window.ns_window.clone(),
             ns_view: window.ns_view.clone(),
             window: Arc::downgrade(&window),
             initial_fullscreen,
             previous_position: None,
-            previous_dpi_factor: scale_factor,
+            previous_dpi_factor: dpi_factor,
         };
 
-        if scale_factor != 1.0 {
-            delegate_state.emit_static_scale_factor_changed_event();
+        if dpi_factor != 1.0 {
+            delegate_state.emit_event(WindowEvent::HiDpiFactorChanged(dpi_factor));
+            delegate_state.emit_resize_event();
         }
 
         delegate_state
@@ -72,34 +73,17 @@ impl WindowDelegateState {
         self.window.upgrade().map(|ref window| callback(window))
     }
 
-    pub fn emit_event(&mut self, event: WindowEvent<'static>) {
+    pub fn emit_event(&mut self, event: WindowEvent) {
         let event = Event::WindowEvent {
             window_id: WindowId(get_window_id(*self.ns_window)),
             event,
         };
-        AppState::queue_event(EventWrapper::StaticEvent(event));
-    }
-
-    pub fn emit_static_scale_factor_changed_event(&mut self) {
-        let scale_factor = self.get_scale_factor();
-        if scale_factor == self.previous_dpi_factor {
-            return ();
-        };
-
-        self.previous_dpi_factor = scale_factor;
-        let wrapper = EventWrapper::EventProxy(EventProxy::DpiChangedProxy {
-            ns_window: IdRef::retain(*self.ns_window),
-            suggested_size: self.view_size(),
-            scale_factor,
-        });
-        AppState::queue_event(wrapper);
+        AppState::queue_event(event);
     }
 
     pub fn emit_resize_event(&mut self) {
         let rect = unsafe { NSView::frame(*self.ns_view) };
-        let scale_factor = self.get_scale_factor();
-        let logical_size = LogicalSize::new(rect.size.width as f64, rect.size.height as f64);
-        let size = logical_size.to_physical(scale_factor);
+        let size = LogicalSize::new(rect.size.width as f64, rect.size.height as f64);
         self.emit_event(WindowEvent::Resized(size));
     }
 
@@ -113,15 +97,6 @@ impl WindowDelegateState {
             self.emit_event(WindowEvent::Moved((x, y).into()));
         }
     }
-
-    fn get_scale_factor(&self) -> f64 {
-        (unsafe { NSWindow::backingScaleFactor(*self.ns_window) }) as f64
-    }
-
-    fn view_size(&self) -> LogicalSize<f64> {
-        let ns_size = unsafe { NSView::frame(*self.ns_view).size };
-        LogicalSize::new(ns_size.width as f64, ns_size.height as f64)
-    }
 }
 
 pub fn new_delegate(window: &Arc<UnownedWindow>, initial_fullscreen: bool) -> IdRef {
@@ -165,6 +140,10 @@ lazy_static! {
             sel!(windowDidMove:),
             window_did_move as extern "C" fn(&Object, Sel, id),
         );
+        decl.add_method(
+            sel!(windowDidChangeScreen:),
+            window_did_change_screen as extern "C" fn(&Object, Sel, id),
+        );
         decl.add_method(
             sel!(windowDidChangeBackingProperties:),
             window_did_change_backing_properties as extern "C" fn(&Object, Sel, id),
@@ -216,10 +195,6 @@ lazy_static! {
             sel!(windowDidExitFullScreen:),
             window_did_exit_fullscreen as extern "C" fn(&Object, Sel, id),
         );
-        decl.add_method(
-            sel!(windowWillExitFullScreen:),
-            window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
-        );
         decl.add_method(
             sel!(windowDidFailToEnterFullScreen:),
             window_did_fail_to_enter_fullscreen as extern "C" fn(&Object, Sel, id),
@@ -298,10 +273,29 @@ extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
     trace!("Completed `windowDidMove:`");
 }
 
+extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
+    trace!("Triggered `windowDidChangeScreen:`");
+    with_state(this, |state| {
+        let dpi_factor = unsafe { NSWindow::backingScaleFactor(*state.ns_window) } as f64;
+        if state.previous_dpi_factor != dpi_factor {
+            state.previous_dpi_factor = dpi_factor;
+            state.emit_event(WindowEvent::HiDpiFactorChanged(dpi_factor));
+            state.emit_resize_event();
+        }
+    });
+    trace!("Completed `windowDidChangeScreen:`");
+}
+
+// This will always be called before `window_did_change_screen`.
 extern "C" fn window_did_change_backing_properties(this: &Object, _: Sel, _: id) {
     trace!("Triggered `windowDidChangeBackingProperties:`");
     with_state(this, |state| {
-        state.emit_static_scale_factor_changed_event();
+        let dpi_factor = unsafe { NSWindow::backingScaleFactor(*state.ns_window) } as f64;
+        if state.previous_dpi_factor != dpi_factor {
+            state.previous_dpi_factor = dpi_factor;
+            state.emit_event(WindowEvent::HiDpiFactorChanged(dpi_factor));
+            state.emit_resize_event();
+        }
     });
     trace!("Completed `windowDidChangeBackingProperties:`");
 }
@@ -425,27 +419,13 @@ extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
                     shared_state.fullscreen = Some(Fullscreen::Borderless(window.current_monitor()))
                 }
             }
-            shared_state.in_fullscreen_transition = true;
+
             trace!("Unlocked shared state in `window_will_enter_fullscreen`");
         })
     });
     trace!("Completed `windowWillEnterFullscreen:`");
 }
 
-/// Invoked when before exit fullscreen
-extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
-    trace!("Triggered `windowWillExitFullScreen:`");
-    with_state(this, |state| {
-        state.with_window(|window| {
-            trace!("Locked shared state in `window_will_exit_fullscreen`");
-            let mut shared_state = window.shared_state.lock().unwrap();
-            shared_state.in_fullscreen_transition = true;
-            trace!("Unlocked shared state in `window_will_exit_fullscreen`");
-        });
-    });
-    trace!("Completed `windowWillExitFullScreen:`");
-}
-
 extern "C" fn window_will_use_fullscreen_presentation_options(
     _this: &Object,
     _: Sel,
@@ -471,17 +451,6 @@ extern "C" fn window_did_enter_fullscreen(this: &Object, _: Sel, _: id) {
     trace!("Triggered `windowDidEnterFullscreen:`");
     with_state(this, |state| {
         state.initial_fullscreen = false;
-        state.with_window(|window| {
-            trace!("Locked shared state in `window_did_enter_fullscreen`");
-            let mut shared_state = window.shared_state.lock().unwrap();
-            shared_state.in_fullscreen_transition = false;
-            let target_fullscreen = shared_state.target_fullscreen.take();
-            trace!("Unlocked shared state in `window_did_enter_fullscreen`");
-            drop(shared_state);
-            if let Some(target_fullscreen) = target_fullscreen {
-                window.set_fullscreen(target_fullscreen);
-            }
-        });
     });
     trace!("Completed `windowDidEnterFullscreen:`");
 }
@@ -492,15 +461,6 @@ extern "C" fn window_did_exit_fullscreen(this: &Object, _: Sel, _: id) {
     with_state(this, |state| {
         state.with_window(|window| {
             window.restore_state_from_fullscreen();
-            trace!("Locked shared state in `window_did_exit_fullscreen`");
-            let mut shared_state = window.shared_state.lock().unwrap();
-            shared_state.in_fullscreen_transition = false;
-            let target_fullscreen = shared_state.target_fullscreen.take();
-            trace!("Unlocked shared state in `window_did_exit_fullscreen`");
-            drop(shared_state);
-            if let Some(target_fullscreen) = target_fullscreen {
-                window.set_fullscreen(target_fullscreen);
-            }
         })
     });
     trace!("Completed `windowDidExitFullscreen:`");
@@ -525,13 +485,6 @@ extern "C" fn window_did_exit_fullscreen(this: &Object, _: Sel, _: id) {
 extern "C" fn window_did_fail_to_enter_fullscreen(this: &Object, _: Sel, _: id) {
     trace!("Triggered `windowDidFailToEnterFullscreen:`");
     with_state(this, |state| {
-        state.with_window(|window| {
-            trace!("Locked shared state in `window_did_fail_to_enter_fullscreen`");
-            let mut shared_state = window.shared_state.lock().unwrap();
-            shared_state.in_fullscreen_transition = false;
-            shared_state.target_fullscreen = None;
-            trace!("Unlocked shared state in `window_did_fail_to_enter_fullscreen`");
-        });
         if state.initial_fullscreen {
             let _: () = unsafe {
                 msg_send![*state.ns_window,

src/platform_impl/web/device.rs

@@ -1,8 +0,0 @@
-#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub struct Id(pub i32);
-
-impl Id {
-    pub unsafe fn dummy() -> Self {
-        Id(0)
-    }
-}

src/platform_impl/web/device/gamepad/constants.rs

@@ -0,0 +1,37 @@
+use crate::event::device::{GamepadAxis, GamepadButton};
+
+pub(crate) static BUTTONS: [GamepadButton; 16] = [
+    GamepadButton::South,
+    GamepadButton::East,
+    GamepadButton::West,
+    GamepadButton::North,
+    GamepadButton::LeftTrigger,
+    GamepadButton::RightTrigger,
+    GamepadButton::LeftShoulder,
+    GamepadButton::RightShoulder,
+    GamepadButton::Select,
+    GamepadButton::Start,
+    GamepadButton::LeftStick,
+    GamepadButton::RightStick,
+    GamepadButton::DPadUp,
+    GamepadButton::DPadDown,
+    GamepadButton::DPadLeft,
+    GamepadButton::DPadRight,
+];
+
+pub(crate) static AXES: [GamepadAxis; 6] = [
+    GamepadAxis::LeftStickX,
+    GamepadAxis::LeftStickY,
+    GamepadAxis::RightStickX,
+    GamepadAxis::RightStickY,
+    GamepadAxis::LeftTrigger,
+    GamepadAxis::RightTrigger,
+];
+
+pub(crate) fn button_code(index: usize) -> Option<GamepadButton> {
+    BUTTONS.get(index).map(|ev| ev.clone())
+}
+
+pub(crate) fn axis_code(index: usize) -> Option<GamepadAxis> {
+    AXES.get(index).map(|ev| ev.clone())
+}

src/platform_impl/web/device/gamepad/manager.rs

@@ -0,0 +1,167 @@
+use super::utils;
+use crate::event::device;
+use crate::platform_impl::platform::{backend, device::gamepad, GamepadHandle, event_loop::global};
+use std::collections::VecDeque;
+
+pub struct Manager {
+    pub(crate) gamepads: Vec<backend::gamepad::Gamepad>,
+    pub(crate) events: VecDeque<(backend::gamepad::Gamepad, device::GamepadEvent)>,
+    pub(crate) global_window: Option<global::Shared>,
+}
+
+impl Manager {
+    pub fn new() -> Self {
+        Self {
+            gamepads: Vec::new(),
+            events: VecDeque::new(),
+            global_window: None,
+        }
+    }
+
+    // Register global window to fetch gamepads.
+    // Due to Chrome issue, I prefer to use its gamepad list
+    pub fn set_global_window(&mut self, global_window: global::Shared) {
+        self.global_window.replace(global_window);
+    }
+
+    // Get an updated raw gamepad and generate a new mapping
+    pub fn collect_gamepads(&self) -> Option<Vec<backend::gamepad::Gamepad>> {
+        self.global_window.as_ref().map(|w| w.get_gamepads())
+    }
+
+    // Collect gamepad events (buttons/axes/sticks)
+    // dispatch to handler and update gamepads
+    pub fn collect_events<F>(&mut self, mut handler: F)
+    where
+        F: 'static + FnMut((device::GamepadHandle, device::GamepadEvent)),
+    {
+        let opt_new_gamepads = self.collect_gamepads();
+        if opt_new_gamepads.is_none() {
+            return;
+        }
+
+        let new_gamepads = opt_new_gamepads.unwrap();
+        let old_gamepads = &self.gamepads;
+
+        let mut old_index = 0;
+        let mut new_index = 0;
+
+        // Collect events
+        loop {
+            match (old_gamepads.get(old_index), new_gamepads.get(new_index)) {
+                (Some(old), Some(new)) if old.index() == new.index() => {
+                    // Button events
+                    let buttons = old.mapping.buttons().zip(new.mapping.buttons()).enumerate();
+                    for (btn_index, (old_button, new_button)) in buttons {
+                        match (old_button, new_button) {
+                            (false, true) => {
+                                self.events.push_back((new.clone(), utils::gamepad_button(btn_index, true)))
+                            }
+                            (true, false) => {
+                                self.events.push_back((new.clone(), utils::gamepad_button(btn_index, false)))
+                            }
+                            _ => (),
+                        }
+                    }
+
+                    // Axis events
+                    let axes = old.mapping.axes().zip(new.mapping.axes()).enumerate();
+                    for (axis_index, (old_axis, new_axis)) in axes {
+                        if old_axis != new_axis {
+                            self.events.push_back((new.clone(), utils::gamepad_axis(axis_index, new_axis)))
+                        }
+                    }
+
+                    // Stick events
+                    let mut old_axes = old.mapping.axes();
+                    let mut new_axes = new.mapping.axes();
+
+                    let old_left = (old_axes.next(), old_axes.next());
+                    let new_left = (new_axes.next(), new_axes.next());
+                    if old_left != new_left {
+                        if let (Some(x), Some(y)) = (new_left.0, new_left.1) {
+                            self.events.push_back((
+                                new.clone(),
+                                utils::gamepad_stick(0, 1, x, y, device::Side::Left),
+                            ));
+                        }
+                    }
+
+                    let old_right = (old_axes.next(), old_axes.next());
+                    let new_right = (new_axes.next(), new_axes.next());
+                    if old_right != new_right {
+                        if let (Some(x), Some(y)) = (new_right.0, new_right.1) {
+                            self.events.push_back((
+                                new.clone(),
+                                utils::gamepad_stick(2, 3, x, y, device::Side::Right),
+                            ));
+                        }
+                    }
+
+                    // Increment indices
+                    old_index += 1;
+                    new_index += 1;
+                },
+
+                // Connect
+                (None, Some(new)) => {
+                    self.events.push_back((
+                        new.clone(),
+                        device::GamepadEvent::Added,
+                    ));
+                    new_index += 1;
+                },
+
+                // Connect
+                (Some(old), Some(new)) if old.index > new.index => {
+                    self.events.push_back((
+                        new.clone(),
+                        device::GamepadEvent::Added,
+                    ));
+                    new_index += 1;
+                },
+
+                // Disconnect
+                (Some(old), Some(_new)) => {
+                    self.events.push_back((
+                        old.clone(),
+                        device::GamepadEvent::Removed,
+                    ));
+                    old_index += 1;
+                },
+
+                // Disconnect
+                (Some(old), None) => {
+                    self.events.push_back((
+                        old.clone(),
+                        device::GamepadEvent::Removed,
+                    ));
+                    old_index += 1;
+                },
+
+                // Break loop
+                (None, None) => {
+                    break
+                }
+            }
+        }
+
+        // Dispatch events and drain events vec
+        loop {
+            if let Some((gamepad, event)) = self.events.pop_front() {
+                handler((
+                    device::GamepadHandle(GamepadHandle {
+                        id: gamepad.index,
+                        gamepad: gamepad::Shared::Raw(gamepad),
+                    }),
+                    event,
+                ));
+            } else {
+                break;
+            }
+        }
+
+        // Update gamepads
+        self.gamepads = new_gamepads;
+    }
+}

src/platform_impl/web/device/gamepad/mapping.rs

@@ -0,0 +1,23 @@
+#[derive(Debug, Clone)]
+pub enum Mapping {
+    Standard { buttons: [bool; 16], axes: [f64; 6] },
+    NoMapping { buttons: Vec<bool>, axes: Vec<f64> },
+}
+
+impl Mapping {
+    pub(crate) fn buttons<'a>(&'a self) -> impl Iterator<Item = bool> + 'a {
+        match self {
+            Mapping::Standard { buttons, .. } => buttons.iter(),
+            Mapping::NoMapping { buttons, .. } => buttons.iter(),
+        }
+        .cloned()
+    }
+
+    pub(crate) fn axes<'a>(&'a self) -> impl Iterator<Item = f64> + 'a {
+        match self {
+            Mapping::Standard { axes, .. } => axes.iter(),
+            Mapping::NoMapping { axes, .. } => axes.iter(),
+        }
+        .cloned()
+    }
+}

src/platform_impl/web/device/gamepad/mod.rs

@@ -0,0 +1,99 @@
+mod manager;
+mod mapping;
+mod utils;
+
+pub mod constants;
+pub use manager::Manager;
+pub use mapping::Mapping;
+
+use crate::event::device::{BatteryLevel, RumbleError};
+use crate::platform_impl::platform::backend;
+use std::fmt;
+
+pub enum Shared {
+    Raw(backend::gamepad::Gamepad),
+    Dummy,
+}
+
+impl Shared {
+    // An integer that is auto-incremented to be unique for each device
+    // currently connected to the system.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/index
+    pub fn id(&self) -> i32 {
+        match self {
+            Shared::Raw(g) => g.index() as i32,
+            Shared::Dummy => -1,
+        }
+    }
+
+    // A string containing some information about the controller.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+    pub fn info(&self) -> String {
+        match self {
+            Shared::Raw(g) => g.id(),
+            Shared::Dummy => String::new(),
+        }
+    }
+
+    // A boolean indicating whether the gamepad is still connected to the system.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/connected
+    pub fn connected(&self) -> bool {
+        match self {
+            Shared::Raw(g) => g.connected(),
+            Shared::Dummy => false,
+        }
+    }
+
+    // [EXPERIMENTAL] An array containing GamepadHapticActuator objects,
+    // each of which represents haptic feedback hardware available on the controller.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/hapticActuators
+    pub fn rumble(&self, left_speed: f64, _right_speed: f64) -> Result<(), RumbleError> {
+        match self {
+            Shared::Dummy => Ok(()),
+            Shared::Raw(g) => {
+                g.vibrate(left_speed, 1000f64);
+                Ok(())
+            }
+        }
+    }
+
+    pub fn is_dummy(&self) -> bool {
+        match self {
+            Shared::Dummy => true,
+            _ => false,
+        }
+    }
+
+    pub fn port(&self) -> Option<u8> {
+        None
+    }
+
+    pub fn battery_level(&self) -> Option<BatteryLevel> {
+        None
+    }
+}
+
+impl Clone for Shared {
+    fn clone(&self) -> Self {
+        match self {
+            Shared::Raw(g) => Shared::Raw(g.clone()),
+            Shared::Dummy => Shared::Dummy,
+        }
+    }
+}
+
+impl Default for Shared {
+    fn default() -> Self {
+        Shared::Dummy
+    }
+}
+
+impl fmt::Debug for Shared {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        if self.is_dummy() {
+            write!(f, "Gamepad (Dummy)")
+        } else {
+            write!(f, "Gamepad ({}#{})", self.id(), self.info())
+        }
+    }
+}

src/platform_impl/web/device/gamepad/utils.rs

@@ -0,0 +1,44 @@
+use crate::event::{ElementState, device};
+use super::constants;
+
+pub fn gamepad_button(code: usize, pressed: bool) -> device::GamepadEvent {
+  let button_id = code as u32;
+  let button = constants::button_code(code);
+
+  let state = if pressed {
+      ElementState::Pressed
+  } else {
+      ElementState::Released
+  };
+
+  device::GamepadEvent::Button {
+      button_id,
+      button,
+      state,
+  }
+}
+
+pub fn gamepad_axis(code: usize, value: f64) -> device::GamepadEvent {
+  let axis_id = code as u32;
+  let axis = constants::axis_code(code);
+
+  device::GamepadEvent::Axis {
+      axis_id,
+      axis,
+      value,
+      stick: true,
+  }
+}
+
+pub fn gamepad_stick(x_code: usize, y_code: usize, x_value: f64, y_value: f64, side: device::Side) -> device::GamepadEvent {
+  let x_id = x_code as u32;
+  let y_id = y_code as u32;
+
+  device::GamepadEvent::Stick {
+      x_id,
+      y_id,
+      x_value,
+      y_value,
+      side,
+  }
+}

src/platform_impl/web/device/mod.rs

@@ -0,0 +1,161 @@
+pub mod gamepad;
+
+use super::event_loop::EventLoop;
+use crate::event::device;
+
+use std::{
+    cmp::{Eq, Ordering, PartialEq, PartialOrd},
+    hash::{Hash, Hasher},
+};
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub(crate) struct MouseId(pub i32);
+
+unsafe impl Send for MouseId {}
+unsafe impl Sync for MouseId {}
+
+impl MouseId {
+    pub unsafe fn dummy() -> Self {
+        Self(0)
+    }
+
+    pub fn is_connected(&self) -> bool {
+        false
+    }
+
+    pub fn enumerate<'a, T>(
+        event_loop: &'a EventLoop<T>,
+    ) -> impl 'a + Iterator<Item = device::MouseId> {
+        event_loop.mice()
+    }
+}
+
+impl From<MouseId> for device::MouseId {
+    fn from(platform_id: MouseId) -> Self {
+        Self(platform_id)
+    }
+}
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub(crate) struct KeyboardId(pub i32);
+
+unsafe impl Send for KeyboardId {}
+unsafe impl Sync for KeyboardId {}
+
+impl KeyboardId {
+    pub unsafe fn dummy() -> Self {
+        Self(0)
+    }
+
+    pub fn is_connected(&self) -> bool {
+        false
+    }
+
+    pub fn enumerate<'a, T>(
+        event_loop: &'a EventLoop<T>,
+    ) -> impl 'a + Iterator<Item = device::KeyboardId> {
+        event_loop.keyboards()
+    }
+}
+
+impl From<KeyboardId> for device::KeyboardId {
+    fn from(platform_id: KeyboardId) -> Self {
+        Self(platform_id)
+    }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub(crate) struct HidId(pub i32);
+
+unsafe impl Send for HidId {}
+unsafe impl Sync for HidId {}
+
+impl HidId {
+    pub unsafe fn dummy() -> Self {
+        Self(0)
+    }
+
+    pub fn is_connected(&self) -> bool {
+        false
+    }
+
+    pub fn enumerate<'a, T>(
+        event_loop: &'a EventLoop<T>,
+    ) -> impl 'a + Iterator<Item = device::HidId> {
+        event_loop.hids()
+    }
+}
+
+impl From<HidId> for device::HidId {
+    fn from(platform_id: HidId) -> Self {
+        Self(platform_id)
+    }
+}
+
+#[derive(Clone, Debug)]
+pub(crate) struct GamepadHandle {
+    pub(crate) id: i32,
+    pub(crate) gamepad: gamepad::Shared,
+}
+
+unsafe impl Send for GamepadHandle {}
+unsafe impl Sync for GamepadHandle {}
+
+impl GamepadHandle {
+    pub unsafe fn dummy() -> Self {
+        Self {
+            id: -1,
+            gamepad: gamepad::Shared::default(),
+        }
+    }
+
+    pub fn is_connected(&self) -> bool {
+        self.gamepad.connected()
+    }
+
+    pub fn enumerate<'a, T>(
+        event_loop: &'a EventLoop<T>,
+    ) -> impl 'a + Iterator<Item = device::GamepadHandle> {
+        event_loop.gamepads()
+    }
+
+    pub fn rumble(&self, left_speed: f64, right_speed: f64) -> Result<(), device::RumbleError> {
+        self.gamepad.rumble(left_speed, right_speed)
+    }
+
+    pub fn port(&self) -> Option<u8> {
+        self.gamepad.port()
+    }
+
+    pub fn battery_level(&self) -> Option<device::BatteryLevel> {
+        self.gamepad.battery_level()
+    }
+}
+
+impl Eq for GamepadHandle {}
+
+impl PartialEq for GamepadHandle {
+    #[inline(always)]
+    fn eq(&self, othr: &Self) -> bool {
+        self.id == othr.id
+    }
+}
+
+impl Ord for GamepadHandle {
+    #[inline(always)]
+    fn cmp(&self, othr: &Self) -> Ordering {
+        self.id.cmp(&othr.id)
+    }
+}
+impl PartialOrd for GamepadHandle {
+    #[inline(always)]
+    fn partial_cmp(&self, othr: &Self) -> Option<Ordering> {
+        self.id.partial_cmp(&othr.id)
+    }
+}
+
+impl Hash for GamepadHandle {
+    #[inline(always)]
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.id.hash(state)
+    }
+}

src/platform_impl/web/event_loop/global.rs

@@ -0,0 +1,81 @@
+use super::super::device::{gamepad, GamepadHandle};
+use super::backend;
+use crate::event::device;
+use std::{cell::RefCell, rc::Rc, collections::HashSet};
+
+#[derive(Debug)]
+pub struct Window {
+    raw: RefCell<Option<backend::window::Shared>>,
+    gamepads: Rc<RefCell<HashSet<i32>>>,
+}
+
+#[derive(Debug)]
+pub struct Shared(Rc<Window>);
+
+impl Shared {
+    pub fn new() -> Self {
+        Self(Rc::new(Window {
+            raw: RefCell::new(None),
+            gamepads: Rc::new(RefCell::new(HashSet::new())),
+        }))
+    }
+
+    // Request window object and listen global events
+    pub fn register_events(&self) -> Result<(), crate::error::OsError> {
+        if (*self.0.raw.borrow()).is_none() {
+            let shared = backend::window::Shared::create()?;
+            let mut window = shared.0.borrow_mut();
+
+            let shared_gamepads = self.0.gamepads.clone();
+            window.on_gamepad_connected(move |gamepad: backend::gamepad::Gamepad| {
+                let mut gamepads = shared_gamepads.borrow_mut();
+                let index = gamepad.index();
+                if !gamepads.contains(&index) {
+                    gamepads.insert(index);
+                }
+            });
+
+            let shared_gamepads = self.0.gamepads.clone();
+            window.on_gamepad_disconnected(move |gamepad: backend::gamepad::Gamepad| {
+                let mut gamepads = shared_gamepads.borrow_mut();
+                let index = gamepad.index();
+                if gamepads.contains(&index) {
+                    gamepads.remove(&index);
+                }
+            });
+
+            self.0.raw.replace(Some(shared.clone()));
+        }
+
+        Ok(())
+    }
+
+    // Google Chrome create an array of [null, null, null, null].
+    // To fix that issue, I create my own list of gamepads
+    // by listening "gamepadconnected" and "gamepaddisconnected"
+    pub fn get_gamepads(&self) -> Vec<backend::gamepad::Gamepad> {
+        let gamepads = self.0.gamepads.borrow_mut();
+        backend::get_gamepads()
+        .filter(|g| gamepads.contains(&g.index()))
+        .collect()
+    }
+
+    // Return gamepads handles required for EventLoop::gamepads()
+    pub fn get_gamepad_handles(&self) -> Vec<device::GamepadHandle> {
+        self.get_gamepads()
+            .iter()
+            .map(|gamepad| {
+                device::GamepadHandle(GamepadHandle {
+                    id: gamepad.index,
+                    gamepad: gamepad::Shared::Raw(gamepad.clone()),
+                })
+            })
+            .collect()
+    }
+}
+
+impl Clone for Shared {
+    fn clone(&self) -> Self {
+        Shared(self.0.clone())
+    }
+}

src/platform_impl/web/event_loop/mod.rs

@@ -2,11 +2,12 @@ mod proxy;
 mod runner;
 mod state;
 mod window_target;
+pub(crate) mod global;
 
 pub use self::proxy::Proxy;
 pub use self::window_target::WindowTarget;
 
-use super::{backend, device, monitor, window};
+use super::{backend, monitor, window};
 use crate::event::Event;
 use crate::event_loop as root;
 
@@ -37,8 +38,7 @@ impl<T> EventLoop<T> {
 
     pub fn run<F>(self, mut event_handler: F) -> !
     where
-        F: 'static
-            + FnMut(Event<'static, T>, &root::EventLoopWindowTarget<T>, &mut root::ControlFlow),
+        F: 'static + FnMut(Event<T>, &root::EventLoopWindowTarget<T>, &mut root::ControlFlow),
     {
         let target = root::EventLoopWindowTarget {
             p: self.elw.p.clone(),
@@ -65,4 +65,20 @@ impl<T> EventLoop<T> {
     pub fn window_target(&self) -> &root::EventLoopWindowTarget<T> {
         &self.elw
     }
+
+    pub fn mice(&self) -> impl '_ + Iterator<Item = crate::event::device::MouseId> {
+        std::iter::empty()
+    }
+
+    pub fn keyboards(&self) -> impl '_ + Iterator<Item = crate::event::device::KeyboardId> {
+        std::iter::empty()
+    }
+
+    pub fn hids(&self) -> impl '_ + Iterator<Item = crate::event::device::HidId> {
+        std::iter::empty()
+    }
+
+    pub fn gamepads(&self) -> impl '_ + Iterator<Item = crate::event::device::GamepadHandle> {
+        self.elw.p.collect_gamepads().into_iter()
+    }
 }

src/platform_impl/web/event_loop/proxy.rs

@@ -11,7 +11,7 @@ impl<T: 'static> Proxy<T> {
         Proxy { runner }
     }
 
-    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
         self.runner.send_event(Event::UserEvent(event));
         Ok(())
     }

src/platform_impl/web/event_loop/runner.rs

@@ -1,7 +1,8 @@
 use super::{backend, state::State};
-use crate::event::{Event, StartCause};
+use crate::event::{Event, StartCause, WindowEvent};
 use crate::event_loop as root;
 use crate::window::WindowId;
+use crate::platform_impl::platform::device::gamepad;
 
 use instant::{Duration, Instant};
 use std::{
@@ -11,7 +12,7 @@ use std::{
     rc::Rc,
 };
 
-pub struct Shared<T: 'static>(Rc<Execution<T>>);
+pub struct Shared<T>(Rc<Execution<T>>);
 
 impl<T> Clone for Shared<T> {
     fn clone(&self) -> Self {
@@ -19,21 +20,22 @@ impl<T> Clone for Shared<T> {
     }
 }
 
-pub struct Execution<T: 'static> {
+pub struct Execution<T> {
     runner: RefCell<Option<Runner<T>>>,
-    events: RefCell<VecDeque<Event<'static, T>>>,
+    events: RefCell<VecDeque<Event<T>>>,
     id: RefCell<u32>,
     redraw_pending: RefCell<HashSet<WindowId>>,
+    gamepad_manager: RefCell<gamepad::Manager>,
 }
 
-struct Runner<T: 'static> {
+struct Runner<T> {
     state: State,
     is_busy: bool,
-    event_handler: Box<dyn FnMut(Event<'static, T>, &mut root::ControlFlow)>,
+    event_handler: Box<dyn FnMut(Event<T>, &mut root::ControlFlow)>,
 }
 
 impl<T: 'static> Runner<T> {
-    pub fn new(event_handler: Box<dyn FnMut(Event<'static, T>, &mut root::ControlFlow)>) -> Self {
+    pub fn new(event_handler: Box<dyn FnMut(Event<T>, &mut root::ControlFlow)>) -> Self {
         Runner {
             state: State::Init,
             is_busy: false,
@@ -49,16 +51,18 @@ impl<T: 'static> Shared<T> {
             events: RefCell::new(VecDeque::new()),
             id: RefCell::new(0),
             redraw_pending: RefCell::new(HashSet::new()),
+            gamepad_manager: RefCell::new(gamepad::Manager::new()),
         }))
     }
 
+    pub fn set_global_window(&self, global_window: super::global::Shared) {
+        self.0.gamepad_manager.borrow_mut().set_global_window(global_window);
+    }
+
     // Set the event callback to use for the event loop runner
     // This the event callback is a fairly thin layer over the user-provided callback that closes
     // over a RootEventLoopWindowTarget reference
-    pub fn set_listener(
-        &self,
-        event_handler: Box<dyn FnMut(Event<'static, T>, &mut root::ControlFlow)>,
-    ) {
+    pub fn set_listener(&self, event_handler: Box<dyn FnMut(Event<T>, &mut root::ControlFlow)>) {
         self.0.runner.replace(Some(Runner::new(event_handler)));
         self.send_event(Event::NewEvents(StartCause::Init));
 
@@ -82,7 +86,7 @@ impl<T: 'static> Shared<T> {
     // Add an event to the event loop runner
     //
     // It will determine if the event should be immediately sent to the user or buffered for later
-    pub fn send_event(&self, event: Event<'static, T>) {
+    pub fn send_event(&self, event: Event<T>) {
         // If the event loop is closed, it should discard any new events
         if self.is_closed() {
             return;
@@ -130,15 +134,26 @@ impl<T: 'static> Shared<T> {
         if !event_is_start {
             self.handle_event(event, &mut control);
         }
-        self.handle_event(Event::MainEventsCleared, &mut control);
-
         // Collect all of the redraw events to avoid double-locking the RefCell
         let redraw_events: Vec<WindowId> = self.0.redraw_pending.borrow_mut().drain().collect();
         for window_id in redraw_events {
-            self.handle_event(Event::RedrawRequested(window_id), &mut control);
+            self.handle_event(
+                Event::WindowEvent {
+                    window_id,
+                    event: WindowEvent::RedrawRequested,
+                },
+                &mut control,
+            );
         }
-        self.handle_event(Event::RedrawEventsCleared, &mut control);
+        // Collect all global events
+        let mut gamepad_manager = self.0.gamepad_manager.borrow_mut();
+        let instance = self.clone();
+        gamepad_manager.collect_events(move |(handle, event)| {
+            instance.handle_event(Event::GamepadEvent(handle, event), &mut control);
+        });
 
+        // Every events are cleared
+        self.handle_event(Event::EventsCleared, &mut control);
         self.apply_control_flow(control);
         // If the event loop is closed, it has been closed this iteration and now the closing
         // event should be emitted
@@ -156,7 +171,7 @@ impl<T: 'static> Shared<T> {
     // handle_event takes in events and either queues them or applies a callback
     //
     // It should only ever be called from send_event
-    fn handle_event(&self, event: Event<'static, T>, control: &mut root::ControlFlow) {
+    fn handle_event(&self, event: Event<T>, control: &mut root::ControlFlow) {
         let is_closed = self.is_closed();
 
         match *self.0.runner.borrow_mut() {

src/platform_impl/web/event_loop/window_target.rs

@@ -1,18 +1,20 @@
-use super::{backend, device, proxy::Proxy, runner, window};
-use crate::dpi::{PhysicalSize, Size};
-use crate::event::{DeviceId, ElementState, Event, KeyboardInput, TouchPhase, WindowEvent};
+use super::{backend, proxy::Proxy, runner, window, global};
+use crate::dpi::LogicalSize;
+use crate::event::{device, ElementState, Event, KeyboardInput, WindowEvent};
 use crate::event_loop::ControlFlow;
+use crate::platform_impl::platform::device::{KeyboardId, MouseId};
 use crate::window::WindowId;
-use std::clone::Clone;
 
 pub struct WindowTarget<T: 'static> {
     pub(crate) runner: runner::Shared<T>,
+    pub(crate) global_window: global::Shared,
 }
 
 impl<T> Clone for WindowTarget<T> {
     fn clone(&self) -> Self {
         WindowTarget {
             runner: self.runner.clone(),
+            global_window: self.global_window.clone(),
         }
     }
 }
@@ -21,6 +23,7 @@ impl<T> WindowTarget<T> {
     pub fn new() -> Self {
         WindowTarget {
             runner: runner::Shared::new(),
+            global_window: global::Shared::new(),
         }
     }
 
@@ -28,7 +31,8 @@ impl<T> WindowTarget<T> {
         Proxy::new(self.runner.clone())
     }
 
-    pub fn run(&self, event_handler: Box<dyn FnMut(Event<'static, T>, &mut ControlFlow)>) {
+    pub fn run(&self, event_handler: Box<dyn FnMut(Event<T>, &mut ControlFlow)>) {
+        self.runner.set_global_window(self.global_window.clone());
         self.runner.set_listener(event_handler);
     }
 
@@ -36,6 +40,14 @@ impl<T> WindowTarget<T> {
         window::Id(self.runner.generate_id())
     }
 
+    pub fn collect_gamepads(&self) -> Vec<crate::event::device::GamepadHandle> {
+        self.global_window.get_gamepad_handles()
+    }
+
+    pub fn register_global_events(&self) -> Result<(), crate::error::OsError> {
+        self.global_window.register_events()
+    }
+
     pub fn register(&self, canvas: &mut backend::Canvas, id: window::Id) {
         let runner = self.runner.clone();
         canvas.set_attribute("data-raw-handle", &id.0.to_string());
@@ -57,36 +69,28 @@ impl<T> WindowTarget<T> {
 
         let runner = self.runner.clone();
         canvas.on_keyboard_press(move |scancode, virtual_keycode, modifiers| {
-            runner.send_event(Event::WindowEvent {
-                window_id: WindowId(id),
-                event: WindowEvent::KeyboardInput {
-                    device_id: DeviceId(unsafe { device::Id::dummy() }),
-                    input: KeyboardInput {
-                        scancode,
-                        state: ElementState::Pressed,
-                        virtual_keycode,
-                        modifiers,
-                    },
-                    is_synthetic: false,
-                },
-            });
+            runner.send_event(Event::KeyboardEvent(
+                device::KeyboardId(unsafe { KeyboardId::dummy() }),
+                device::KeyboardEvent::Input(KeyboardInput {
+                    scancode,
+                    state: ElementState::Pressed,
+                    virtual_keycode,
+                    modifiers,
+                }),
+            ));
         });
 
         let runner = self.runner.clone();
         canvas.on_keyboard_release(move |scancode, virtual_keycode, modifiers| {
-            runner.send_event(Event::WindowEvent {
-                window_id: WindowId(id),
-                event: WindowEvent::KeyboardInput {
-                    device_id: DeviceId(unsafe { device::Id::dummy() }),
-                    input: KeyboardInput {
-                        scancode,
-                        state: ElementState::Released,
-                        virtual_keycode,
-                        modifiers,
-                    },
-                    is_synthetic: false,
-                },
-            });
+            runner.send_event(Event::KeyboardEvent(
+                device::KeyboardId(unsafe { KeyboardId::dummy() }),
+                device::KeyboardEvent::Input(KeyboardInput {
+                    scancode,
+                    state: ElementState::Released,
+                    virtual_keycode,
+                    modifiers,
+                }),
+            ));
         });
 
         let runner = self.runner.clone();
@@ -98,31 +102,26 @@ impl<T> WindowTarget<T> {
         });
 
         let runner = self.runner.clone();
-        canvas.on_cursor_leave(move |pointer_id| {
+        canvas.on_cursor_leave(move || {
             runner.send_event(Event::WindowEvent {
                 window_id: WindowId(id),
-                event: WindowEvent::CursorLeft {
-                    device_id: DeviceId(device::Id(pointer_id)),
-                },
+                event: WindowEvent::CursorLeft,
             });
         });
 
         let runner = self.runner.clone();
-        canvas.on_cursor_enter(move |pointer_id| {
+        canvas.on_cursor_enter(move || {
             runner.send_event(Event::WindowEvent {
                 window_id: WindowId(id),
-                event: WindowEvent::CursorEntered {
-                    device_id: DeviceId(device::Id(pointer_id)),
-                },
+                event: WindowEvent::CursorEntered,
             });
         });
 
         let runner = self.runner.clone();
-        canvas.on_cursor_move(move |pointer_id, position, modifiers| {
+        canvas.on_cursor_move(move |position, modifiers| {
             runner.send_event(Event::WindowEvent {
                 window_id: WindowId(id),
                 event: WindowEvent::CursorMoved {
-                    device_id: DeviceId(device::Id(pointer_id)),
                     position,
                     modifiers,
                 },
@@ -130,67 +129,56 @@ impl<T> WindowTarget<T> {
         });
 
         let runner = self.runner.clone();
-        canvas.on_mouse_press(move |pointer_id, button, modifiers| {
-            runner.send_event(Event::WindowEvent {
-                window_id: WindowId(id),
-                event: WindowEvent::MouseInput {
-                    device_id: DeviceId(device::Id(pointer_id)),
+        canvas.on_mouse_press(move |pointer_id, button| {
+            runner.send_event(Event::MouseEvent(
+                device::MouseId(MouseId(pointer_id)),
+                device::MouseEvent::Button {
                     state: ElementState::Pressed,
                     button,
-                    modifiers,
                 },
-            });
+            ));
         });
 
         let runner = self.runner.clone();
-        canvas.on_mouse_release(move |pointer_id, button, modifiers| {
-            runner.send_event(Event::WindowEvent {
-                window_id: WindowId(id),
-                event: WindowEvent::MouseInput {
-                    device_id: DeviceId(device::Id(pointer_id)),
+        canvas.on_mouse_release(move |pointer_id, button| {
+            runner.send_event(Event::MouseEvent(
+                device::MouseId(MouseId(pointer_id)),
+                device::MouseEvent::Button {
                     state: ElementState::Released,
                     button,
-                    modifiers,
                 },
-            });
+            ));
         });
 
         let runner = self.runner.clone();
-        canvas.on_mouse_wheel(move |pointer_id, delta, modifiers| {
-            runner.send_event(Event::WindowEvent {
-                window_id: WindowId(id),
-                event: WindowEvent::MouseWheel {
-                    device_id: DeviceId(device::Id(pointer_id)),
-                    delta,
-                    phase: TouchPhase::Moved,
-                    modifiers,
-                },
-            });
+        canvas.on_mouse_wheel(move |pointer_id, delta| {
+            runner.send_event(Event::MouseEvent(
+                device::MouseId(MouseId(pointer_id)),
+                device::MouseEvent::Wheel(delta.0, delta.1),
+            ));
         });
 
         let runner = self.runner.clone();
         let raw = canvas.raw().clone();
-
-        // The size to restore to after exiting fullscreen.
-        let mut intended_size = PhysicalSize {
-            width: raw.width() as u32,
-            height: raw.height() as u32,
+        let mut intended_size = LogicalSize {
+            width: raw.width() as f64,
+            height: raw.height() as f64,
         };
         canvas.on_fullscreen_change(move || {
             // If the canvas is marked as fullscreen, it is moving *into* fullscreen
             // If it is not, it is moving *out of* fullscreen
             let new_size = if backend::is_fullscreen(&raw) {
-                intended_size = PhysicalSize {
-                    width: raw.width() as u32,
-                    height: raw.height() as u32,
+                intended_size = LogicalSize {
+                    width: raw.width() as f64,
+                    height: raw.height() as f64,
                 };
 
-                backend::window_size().to_physical(backend::scale_factor())
+                backend::window_size()
             } else {
                 intended_size
             };
-
-            backend::set_canvas_size(&raw, Size::Physical(new_size));
+            raw.set_width(new_size.width as u32);
+            raw.set_height(new_size.height as u32);
             runner.send_event(Event::WindowEvent {
                 window_id: WindowId(id),
                 event: WindowEvent::Resized(new_size),

src/platform_impl/web/mod.rs

@@ -19,7 +19,6 @@ mod backend;
 #[cfg(not(any(feature = "web-sys", feature = "stdweb")))]
 compile_error!("Please select a feature to build for web: `web-sys`, `stdweb`");
 
-pub use self::device::Id as DeviceId;
 pub use self::error::OsError;
 pub use self::event_loop::{
     EventLoop, Proxy as EventLoopProxy, WindowTarget as EventLoopWindowTarget,
@@ -29,3 +28,5 @@ pub use self::window::{
     Id as WindowId, PlatformSpecificBuilderAttributes as PlatformSpecificWindowBuilderAttributes,
     Window,
 };
+
+pub(crate) use self::device::*;

src/platform_impl/web/monitor.rs

@@ -5,22 +5,22 @@ use crate::monitor::{MonitorHandle, VideoMode};
 pub struct Handle;
 
 impl Handle {
-    pub fn scale_factor(&self) -> f64 {
+    pub fn hidpi_factor(&self) -> f64 {
         1.0
     }
 
-    pub fn position(&self) -> PhysicalPosition<i32> {
-        PhysicalPosition { x: 0, y: 0 }
+    pub fn position(&self) -> PhysicalPosition {
+        PhysicalPosition { x: 0.0, y: 0.0 }
     }
 
     pub fn name(&self) -> Option<String> {
         None
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         PhysicalSize {
-            width: 0,
-            height: 0,
+            width: 0.0,
+            height: 0.0,
         }
     }
 
@@ -33,7 +33,7 @@ impl Handle {
 pub struct Mode;
 
 impl Mode {
-    pub fn size(&self) -> PhysicalSize<u32> {
+    pub fn size(&self) -> PhysicalSize {
         unimplemented!();
     }
 

src/platform_impl/web/stdweb/canvas.rs

@@ -1,7 +1,7 @@
-use super::event;
-use crate::dpi::{LogicalPosition, PhysicalPosition, PhysicalSize};
+use super::utils;
+use crate::dpi::{LogicalPosition, LogicalSize};
 use crate::error::OsError as RootOE;
-use crate::event::{ModifiersState, MouseButton, MouseScrollDelta, ScanCode, VirtualKeyCode};
+use crate::event::{ModifiersState, MouseButton, ScanCode, VirtualKeyCode};
 use crate::platform_impl::OsError;
 
 use std::cell::RefCell;
@@ -19,7 +19,6 @@ use stdweb::web::{
 };
 
 pub struct Canvas {
-    /// Note: resizing the CanvasElement should go through `backend::set_canvas_size` to ensure the DPI factor is maintained.
     raw: CanvasElement,
     on_focus: Option<EventListenerHandle>,
     on_blur: Option<EventListenerHandle>,
@@ -83,20 +82,23 @@ impl Canvas {
             .expect(&format!("Set attribute: {}", attribute));
     }
 
-    pub fn position(&self) -> LogicalPosition<f64> {
+    pub fn position(&self) -> (f64, f64) {
         let bounds = self.raw.get_bounding_client_rect();
 
-        LogicalPosition {
-            x: bounds.get_x(),
-            y: bounds.get_y(),
-        }
+        (bounds.get_x(), bounds.get_y())
     }
 
-    pub fn size(&self) -> PhysicalSize<u32> {
-        PhysicalSize {
-            width: self.raw.width() as u32,
-            height: self.raw.height() as u32,
-        }
+    pub fn width(&self) -> f64 {
+        self.raw.width() as f64
+    }
+
+    pub fn height(&self) -> f64 {
+        self.raw.height() as f64
+    }
+
+    pub fn set_size(&self, size: LogicalSize) {
+        self.raw.set_width(size.width as u32);
+        self.raw.set_height(size.height as u32);
     }
 
     pub fn raw(&self) -> &CanvasElement {
@@ -127,9 +129,9 @@ impl Canvas {
     {
         self.on_keyboard_release = Some(self.add_user_event(move |event: KeyUpEvent| {
             handler(
-                event::scan_code(&event),
-                event::virtual_key_code(&event),
-                event::keyboard_modifiers(&event),
+                utils::scan_code(&event),
+                utils::virtual_key_code(&event),
+                utils::keyboard_modifiers(&event),
             );
         }));
     }
@@ -140,9 +142,9 @@ impl Canvas {
     {
         self.on_keyboard_press = Some(self.add_user_event(move |event: KeyDownEvent| {
             handler(
-                event::scan_code(&event),
-                event::virtual_key_code(&event),
-                event::keyboard_modifiers(&event),
+                utils::scan_code(&event),
+                utils::virtual_key_code(&event),
+                utils::keyboard_modifiers(&event),
             );
         }));
     }
@@ -157,76 +159,65 @@ impl Canvas {
         // viable/compatible alternative as of now. `beforeinput` is still widely
         // unsupported.
         self.on_received_character = Some(self.add_user_event(move |event: KeyPressEvent| {
-            handler(event::codepoint(&event));
+            handler(utils::codepoint(&event));
         }));
     }
 
     pub fn on_cursor_leave<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32),
+        F: 'static + FnMut(),
     {
-        self.on_cursor_leave = Some(self.add_event(move |event: PointerOutEvent| {
-            handler(event.pointer_id());
+        self.on_cursor_leave = Some(self.add_event(move |_event: PointerOutEvent| {
+            handler();
         }));
     }
 
     pub fn on_cursor_enter<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32),
+        F: 'static + FnMut(),
     {
-        self.on_cursor_enter = Some(self.add_event(move |event: PointerOverEvent| {
-            handler(event.pointer_id());
+        self.on_cursor_enter = Some(self.add_event(move |_event: PointerOverEvent| {
+            handler();
         }));
     }
 
     pub fn on_mouse_release<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32, MouseButton, ModifiersState),
+        F: 'static + FnMut(i32, MouseButton),
     {
         self.on_mouse_release = Some(self.add_user_event(move |event: PointerUpEvent| {
-            handler(
-                event.pointer_id(),
-                event::mouse_button(&event),
-                event::mouse_modifiers(&event),
-            );
+            handler(event.pointer_id(), utils::mouse_button(&event));
         }));
     }
 
     pub fn on_mouse_press<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32, MouseButton, ModifiersState),
+        F: 'static + FnMut(i32, MouseButton),
     {
         self.on_mouse_press = Some(self.add_user_event(move |event: PointerDownEvent| {
-            handler(
-                event.pointer_id(),
-                event::mouse_button(&event),
-                event::mouse_modifiers(&event),
-            );
+            handler(event.pointer_id(), utils::mouse_button(&event));
         }));
     }
 
     pub fn on_cursor_move<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32, PhysicalPosition<i32>, ModifiersState),
+        F: 'static + FnMut(LogicalPosition, ModifiersState),
     {
-        // todo
         self.on_cursor_move = Some(self.add_event(move |event: PointerMoveEvent| {
             handler(
-                event.pointer_id(),
-                event::mouse_position(&event).to_physical(super::scale_factor()),
-                event::mouse_modifiers(&event),
+                utils::mouse_position(&event),
+                utils::mouse_modifiers(&event),
             );
         }));
     }
 
     pub fn on_mouse_wheel<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32, MouseScrollDelta, ModifiersState),
+        F: 'static + FnMut(i32, (f64, f64)),
     {
         self.on_mouse_wheel = Some(self.add_event(move |event: MouseWheelEvent| {
-            if let Some(delta) = event::mouse_scroll_delta(&event) {
-                handler(0, delta, event::mouse_modifiers(&event));
-            }
+            let delta = utils::mouse_scroll_delta(&event);
+            handler(0, delta);
         }));
     }
 

src/platform_impl/web/stdweb/gamepad.rs

@@ -0,0 +1,82 @@
+use std::{cmp::PartialEq};
+use crate::platform_impl::platform::device;
+use super::utils;
+use stdweb::js;
+
+#[derive(Debug)]
+pub struct Gamepad {
+    pub(crate) index: i32,
+    pub(crate) raw: stdweb::web::Gamepad,
+    pub(crate) mapping: device::gamepad::Mapping,
+}
+
+impl Gamepad {
+    pub fn new(raw: stdweb::web::Gamepad) -> Self {
+        let mapping = utils::create_mapping(&raw);
+
+        Self {
+            index: raw.index(),
+            raw,
+            mapping,
+        }
+    }
+
+    // An integer that is auto-incremented to be unique for each device
+    // currently connected to the system.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/index
+    pub fn index(&self) -> i32 {
+        self.raw.index()
+    }
+
+    // A string containing some information about the controller.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+    pub fn id(&self) -> String {
+        self.raw.id()
+    }
+
+    // A boolean indicating whether the gamepad is still connected to the system.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/connected
+    pub fn connected(&self) -> bool {
+        self.raw.connected()
+    }
+
+    // EXPERIMENTAL
+    #[allow(dead_code)]
+    pub fn vibrate(&self, value: f64, duration: f64) {
+        let index = self.index;
+        js! {
+            const gamepads = navigator.getGamepads();
+            let gamepad = null;
+            for (let i = 0; i < gamepads.length; i++) {
+                if (gamepads[i] && gamepads[i].index == @{index}) {
+                    gamepad = gamepads[i];
+                    break
+                }
+            }
+            if (!gamepad || !gamepad.hapticActuators) return;
+            for (let i = 0; i < gamepad.hapticActuators.length; i++) {
+                const actuator = gamepad.hapticActuators[i];
+                if (actuator && actuator.type === "vibration") {
+                    actuator.pulse(@{value}, @{duration});
+                }
+            }
+        }
+    }
+}
+
+impl Clone for Gamepad {
+    fn clone(&self) -> Self {
+        Self {
+            index: self.index,
+            raw: self.raw.clone(),
+            mapping: self.mapping.clone(),
+        }
+    }
+}
+
+impl PartialEq for Gamepad {
+    #[inline(always)]
+    fn eq(&self, othr: &Self) -> bool {
+        self.raw.index() == othr.raw.index()
+    }
+}

src/platform_impl/web/stdweb/mod.rs

@@ -1,11 +1,13 @@
 mod canvas;
-mod event;
+pub mod gamepad;
 mod timeout;
+mod utils;
+pub mod window;
 
 pub use self::canvas::Canvas;
 pub use self::timeout::Timeout;
 
-use crate::dpi::{LogicalSize, Size};
+use crate::dpi::LogicalSize;
 use crate::platform::web::WindowExtStdweb;
 use crate::window::Window;
 
@@ -33,7 +35,7 @@ impl WindowExtStdweb for Window {
     }
 }
 
-pub fn window_size() -> LogicalSize<f64> {
+pub fn window_size() -> LogicalSize {
     let window = window();
     let width = window.inner_width() as f64;
     let height = window.inner_height() as f64;
@@ -41,28 +43,6 @@ pub fn window_size() -> LogicalSize<f64> {
     LogicalSize { width, height }
 }
 
-pub fn scale_factor() -> f64 {
-    let window = window();
-    window.device_pixel_ratio()
-}
-
-pub fn set_canvas_size(raw: &CanvasElement, size: Size) {
-    use stdweb::*;
-
-    let scale_factor = scale_factor();
-
-    let physical_size = size.to_physical::<u32>(scale_factor);
-    let logical_size = size.to_logical::<f64>(scale_factor);
-
-    raw.set_width(physical_size.width);
-    raw.set_height(physical_size.height);
-
-    js! {
-        @{raw.as_ref()}.style.width = @{logical_size.width} + "px";
-        @{raw.as_ref()}.style.height = @{logical_size.height} + "px";
-    }
-}
-
 pub fn is_fullscreen(canvas: &CanvasElement) -> bool {
     match document().fullscreen_element() {
         Some(elem) => {
@@ -72,3 +52,9 @@ pub fn is_fullscreen(canvas: &CanvasElement) -> bool {
         None => false,
     }
 }
+
+pub fn get_gamepads() -> impl Iterator<Item = gamepad::Gamepad> {
+    stdweb::web::Gamepad::get_all()
+    .into_iter()
+    .filter_map(|gamepad| gamepad.map(|gamepad| gamepad::Gamepad::new(gamepad)))
+}

src/platform_impl/web/stdweb/timeout.rs

@@ -3,7 +3,7 @@ use stdweb::web::{window, IWindowOrWorker, TimeoutHandle};
 
 #[derive(Debug)]
 pub struct Timeout {
-    handle: Option<TimeoutHandle>,
+    handle: TimeoutHandle,
 }
 
 impl Timeout {
@@ -12,14 +12,14 @@ impl Timeout {
         F: 'static + FnMut(),
     {
         Timeout {
-            handle: Some(window().set_clearable_timeout(f, duration.as_millis() as u32)),
+            handle: window().set_clearable_timeout(f, duration.as_millis() as u32),
         }
     }
 }
 
 impl Drop for Timeout {
     fn drop(&mut self) {
-        let handle = self.handle.take().unwrap();
+        let handle = std::mem::replace(&mut self.handle, unsafe { std::mem::uninitialized() });
         handle.clear();
     }
 }

src/platform_impl/web/stdweb/utils.rs

@@ -1,7 +1,11 @@
 use crate::dpi::LogicalPosition;
-use crate::event::{ModifiersState, MouseButton, MouseScrollDelta, ScanCode, VirtualKeyCode};
+use crate::event::{ModifiersState, MouseButton, ScanCode, VirtualKeyCode};
+use crate::platform_impl::platform::device::gamepad;
 
-use stdweb::web::event::{IKeyboardEvent, IMouseEvent, MouseWheelDeltaMode, MouseWheelEvent};
+use stdweb::web::{
+    event::{IKeyboardEvent, IMouseEvent, MouseWheelEvent},
+    Gamepad, GamepadMappingType,
+};
 use stdweb::{js, unstable::TryInto, JsSerialize};
 
 pub fn mouse_button(event: &impl IMouseEvent) -> MouseButton {
@@ -15,30 +19,25 @@ pub fn mouse_button(event: &impl IMouseEvent) -> MouseButton {
 }
 
 pub fn mouse_modifiers(event: &impl IMouseEvent) -> ModifiersState {
-    let mut m = ModifiersState::empty();
-    m.set(ModifiersState::SHIFT, event.shift_key());
-    m.set(ModifiersState::CTRL, event.ctrl_key());
-    m.set(ModifiersState::ALT, event.alt_key());
-    m.set(ModifiersState::LOGO, event.meta_key());
-    m
+    ModifiersState {
+        shift: event.shift_key(),
+        ctrl: event.ctrl_key(),
+        alt: event.alt_key(),
+        logo: event.meta_key(),
+    }
 }
 
-pub fn mouse_position(event: &impl IMouseEvent) -> LogicalPosition<f64> {
+pub fn mouse_position(event: &impl IMouseEvent) -> LogicalPosition {
     LogicalPosition {
         x: event.offset_x() as f64,
         y: event.offset_y() as f64,
     }
 }
 
-pub fn mouse_scroll_delta(event: &MouseWheelEvent) -> Option<MouseScrollDelta> {
+pub fn mouse_scroll_delta(event: &MouseWheelEvent) -> (f64, f64) {
     let x = event.delta_x();
     let y = event.delta_y();
-
-    match event.delta_mode() {
-        MouseWheelDeltaMode::Line => Some(MouseScrollDelta::LineDelta(x as f32, y as f32)),
-        MouseWheelDeltaMode::Pixel => Some(MouseScrollDelta::PixelDelta(LogicalPosition { x, y })),
-        MouseWheelDeltaMode::Page => None,
-    }
+    (x, y)
 }
 
 pub fn scan_code<T: JsSerialize>(event: &T) -> ScanCode {
@@ -213,12 +212,12 @@ pub fn virtual_key_code(event: &impl IKeyboardEvent) -> Option<VirtualKeyCode> {
 }
 
 pub fn keyboard_modifiers(event: &impl IKeyboardEvent) -> ModifiersState {
-    let mut m = ModifiersState::empty();
-    m.set(ModifiersState::SHIFT, event.shift_key());
-    m.set(ModifiersState::CTRL, event.ctrl_key());
-    m.set(ModifiersState::ALT, event.alt_key());
-    m.set(ModifiersState::LOGO, event.meta_key());
-    m
+    ModifiersState {
+        shift: event.shift_key(),
+        ctrl: event.ctrl_key(),
+        alt: event.alt_key(),
+        logo: event.meta_key(),
+    }
 }
 
 pub fn codepoint(event: &impl IKeyboardEvent) -> char {
@@ -227,3 +226,36 @@ pub fn codepoint(event: &impl IKeyboardEvent) -> char {
     // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key
     event.key().chars().next().unwrap()
 }
+
+pub fn create_mapping(raw: &Gamepad) -> gamepad::Mapping {
+    match raw.mapping() {
+        GamepadMappingType::Standard => {
+            let mut buttons = [false; 16];
+            let mut axes = [0.0; 6];
+
+            for (index, button) in raw
+                .buttons()
+                .into_iter()
+                .enumerate()
+                .take(buttons.len())
+            {
+                buttons[index] = button.pressed();
+            }
+
+            for (index, axis) in raw.axes().into_iter().enumerate().take(axes.len()) {
+                axes[index] = axis;
+            }
+
+            gamepad::Mapping::Standard { buttons, axes }
+        }
+        _ => {
+            let buttons = raw
+                .buttons()
+                .into_iter()
+                .map(|button| button.pressed())
+                .collect();
+            let axes = raw.axes();
+            gamepad::Mapping::NoMapping { buttons, axes }
+        }
+    }
+}