Document that multiple windows are not supported on Android

.github/workflows/ci.yml

@@ -89,7 +89,7 @@ jobs:
 
     - name: Generate lockfile
       # Also updates the crates.io index
-      run: cargo generate-lockfile && cargo update -p ahash --precise 0.8.7 && cargo update -p bumpalo --precise 3.14.0
+      run: cargo generate-lockfile && cargo update -p ahash --precise 0.8.7
 
     - name: Install GCC Multilib
       if: (matrix.platform.os == 'ubuntu-latest') && contains(matrix.platform.target, 'i686')

CHANGELOG.md

@@ -11,20 +11,17 @@ Unreleased` header.
 
 # Unreleased
 
-- Move `dpi` types to its own crate, and re-export it from the root crate.
+- On X11, don't require XIM to run.
-- Implement `Sync` for `EventLoopProxy<T: Send>`.
+- Fix compatibility with 32-bit platforms without 64-bit atomics.
-- **Breaking:** Move `Window::new` to `ActiveEventLoop::create_window` and `EventLoop::create_window` (with the latter being deprecated).
+- On X11, fix swapped instance and general class names.
-- **Breaking:** Rename `EventLoopWindowTarget` to `ActiveEventLoop`.
-- **Breaking:** Remove `Deref` implementation for `EventLoop` that gave `EventLoopWindowTarget`.
-- **Breaking**: Remove `WindowBuilder` in favor of `WindowAttributes`.
 - **Breaking:** Removed unnecessary generic parameter `T` from `EventLoopWindowTarget`.
 - On Windows, macOS, X11, Wayland and Web, implement setting images as cursors. See the `custom_cursors.rs` example.
   - **Breaking:** Remove `Window::set_cursor_icon`
   - Add `WindowBuilder::with_cursor` and `Window::set_cursor` which takes a `CursorIcon` or `CustomCursor`
+  - Add `CustomCursor`
   - Add `CustomCursor::from_rgba` to allow creating cursor images from RGBA data.
   - Add `CustomCursorExtWebSys::from_url` to allow loading cursor images from URLs.
   - Add `CustomCursorExtWebSys::from_animation` to allow creating animated cursors from other `CustomCursor`s.
-  - Add `{Active,}EventLoop::create_custom_cursor` to load custom cursor image sources.
 - On macOS, add services menu.
 - **Breaking:** On Web, remove queuing fullscreen request in absence of transient activation.
 - On Web, fix setting cursor icon overriding cursor visibility.
@@ -41,27 +38,17 @@ Unreleased` header.
 - on iOS, add detection support for `PinchGesture`, `DoubleTapGesture` and `RotationGesture`.
 - on Windows: add `with_system_backdrop`, `with_border_color`, `with_title_background_color`, `with_title_text_color` and `with_corner_preference`
 - On Windows, Remove `WS_CAPTION`, `WS_BORDER` and `WS_EX_WINDOWEDGE` styles for child windows without decorations.
+- On Windows, fixed a race condition when sending an event through the loop proxy.
 - **Breaking:** Removed `EventLoopError::AlreadyRunning`, which can't happen as it is already prevented by the type system.
+- On Wayland, disable `Occluded` event handling.
 - Added `EventLoop::builder`, which is intended to replace the (now deprecated) `EventLoopBuilder::new`.
 - **Breaking:** Changed the signature of `EventLoop::with_user_event` to return a builder.
 - **Breaking:** Removed `EventLoopBuilder::with_user_event`, the functionality is now available in `EventLoop::with_user_event`.
-- Add `Window::default_attributes` to get default `WindowAttributes`.
+- Add `Window::builder`, which is intended to replace the (now deprecated) `WindowBuilder::new`.
-
-# 0.29.11
-
-- Fix compatibility with 32-bit platforms without 64-bit atomics.
-- On macOS, fix incorrect IME cursor rect origin.
-- On Windows, fixed a race condition when sending an event through the loop proxy.
-- On X11, fix swapped instance and general class names.
-- On X11, don't require XIM to run.
-- On X11, fix xkb state not being updated correctly sometimes leading to wrong input.
 - On X11, reload dpi on `_XSETTINGS_SETTINGS` update.
 - On X11, fix deadlock when adjusting DPI and resizing at the same time.
-- On Wayland, disable `Occluded` event handling.
-- On Wayland, fix DeviceEvent::Motion not being sent
 - On Wayland, fix `Focused(false)` being send when other seats still have window focused.
 - On Wayland, fix `Window::set_{min,max}_inner_size` not always applied.
-- On Wayland, fix title in CSD not updated from `AboutToWait`.
 - On Windows, fix inconsistent resizing behavior with multi-monitor setups when repositioning outside the event loop.
 - On Wayland, fix `WAYLAND_SOCKET` not used when detecting platform.
 - On Orbital, fix `logical_key` and `text` not reported in `KeyEvent`.
@@ -82,6 +69,7 @@ Unreleased` header.
 - On Orbital, implement `is_decorated`.
 - On Orbital, implement `set_window_level`.
 - On Orbital, emit `DeviceEvent::MouseMotion`.
+- On Wayland, fix title in CSD not updated from `AboutToWait`.
 
 # 0.29.10
 
@@ -143,7 +131,7 @@ Unreleased` header.
 # 0.29.3
 
 - On Wayland, apply correct scale to `PhysicalSize` passed in `WindowBuilder::with_inner_size` when possible.
-- On Wayland, fix `RedrawRequested` being always sent without decorations and `sctk-adwaita` feature.
+- On Wayland, fix `RedrawRequsted` being always sent without decorations and `sctk-adwaita` feature.
 - On Wayland, ignore resize requests when the window is fully tiled.
 - On Wayland, use `configure_bounds` to constrain `with_inner_size` when compositor wants users to pick size.
 - On Windows, fix deadlock when accessing the state during `Cursor{Enter,Leave}`.
@@ -395,7 +383,7 @@ Unreleased` header.
 - **Breaking:**: Removed deprecated method `platform::unix::WindowExtUnix::is_ready`.
 - Removed `parking_lot` dependency.
 - **Breaking:** On macOS, add support for two-finger touchpad magnification and rotation gestures with new events `WindowEvent::TouchpadMagnify` and `WindowEvent::TouchpadRotate`. Also add support for touchpad smart-magnification gesture with a new event `WindowEvent::SmartMagnify`.
-- **Breaking:** On Web, the `WindowBuilderExtWebSys::with_prevent_default` setting (enabled by default), now additionally prevents scrolling of the webpage in mobile browsers, previously it only disabled scrolling on desktop.
+- **Breaking:** On web, the `WindowBuilderExtWebSys::with_prevent_default` setting (enabled by default), now additionally prevents scrolling of the webpage in mobile browsers, previously it only disabled scrolling on desktop.
 - On Wayland, `wayland-csd-adwaita` now uses `ab_glyph` instead of `crossfont` to render the title for decorations.
 - On Wayland, a new `wayland-csd-adwaita-crossfont` feature was added to use `crossfont` instead of `ab_glyph` for decorations.
 - On Wayland, if not otherwise specified use upstream automatic CSD theme selection.
@@ -415,7 +403,7 @@ Unreleased` header.
 - Added `Window::set_transparent` to provide a hint about transparency of the window on Wayland and macOS.
 - On macOS, fix the mouse buttons other than left/right/middle being reported as middle.
 - On Wayland, support fractional scaling via the wp-fractional-scale protocol.
-- On Web, fix removal of mouse event listeners from the global object upon window destruction.
+- On web, fix removal of mouse event listeners from the global object upon window distruction.
 - Add WindowAttributes getter to WindowBuilder to allow introspection of default values.
 - Added `Window::set_ime_purpose` for setting the IME purpose, currently implemented on Wayland only.
 
@@ -521,7 +509,7 @@ Unreleased` header.
 - On Web, add `with_prevent_default` and `with_focusable` to `WindowBuilderExtWebSys` to control whether events should be propagated.
 - On Windows, fix focus events being sent to inactive windows.
 - **Breaking**, update `raw-window-handle` to `v0.5` and implement `HasRawDisplayHandle` for `Window` and `EventLoopWindowTarget`.
-- On X11, add function `register_xlib_error_hook` into `winit::platform::unix` to subscribe for errors coming from Xlib.
+- On X11, add function `register_xlib_error_hook` into `winit::platform::unix` to subscribe for errors comming from Xlib.
 - On Android, upgrade `ndk` and `ndk-glue` dependencies to the recently released `0.7.0`.
 - All platforms can now be relied on to emit a `Resumed` event. Applications are recommended to lazily initialize graphics state and windows on first resume for portability.
 - **Breaking:**: Reverse horizontal scrolling sign in `MouseScrollDelta` to match the direction of vertical scrolling. A positive X value now means moving the content to the right. The meaning of vertical scrolling stays the same: a positive Y value means moving the content down.
@@ -820,7 +808,7 @@ Unreleased` header.
 - On Windows, fix handling of surrogate pairs when dispatching `ReceivedCharacter`.
 - On macOS 10.15, fix freeze upon exiting exclusive fullscreen mode.
 - On iOS, fix panic upon closing the app.
-- On X11, allow setting multiple `XWindowType`s.
+- On X11, allow setting mulitple `XWindowType`s.
 - On iOS, fix null window on initial `HiDpiFactorChanged` event.
 - On Windows, fix fullscreen window shrinking upon getting restored to a normal window.
 - On macOS, fix events not being emitted during modal loops, such as when windows are being resized
@@ -973,7 +961,7 @@ and `WindowEvent::HoveredFile`.
 - On Windows, hiding the cursor no longer hides the cursor for all Winit windows - just the one `hide_cursor` was called on.
 - On Windows, cursor grabs used to get perpetually canceled when the grabbing window lost focus. Now, cursor grabs automatically get re-initialized when the window regains focus and the mouse moves over the client area.
 - On Windows, only vertical mouse wheel events were handled. Now, horizontal mouse wheel events are also handled.
-- On Windows, ignore the AltGr key when populating the `ModifiersState` type.
+- On Windows, ignore the AltGr key when populating the `ModifersState` type.
 
 # Version 0.18.1 (2018-12-30)
 
@@ -1253,7 +1241,7 @@ _Yanked_
 
 # Version 0.8.2 (2017-09-28)
 
-- Uniformize keyboard scancode values across Wayland and X11 (#297).
+- Uniformize keyboard scancode values accross Wayland and X11 (#297).
 - Internal rework of the wayland event loop
 - Added method `os::linux::WindowExt::is_ready`
 
@@ -1267,7 +1255,7 @@ _Yanked_
 - Added `Window::set_maximized`, `WindowAttributes::maximized` and `WindowBuilder::with_maximized`.
 - Added `Window::set_fullscreen`.
 - Changed `with_fullscreen` to take a `Option<MonitorId>` instead of a `MonitorId`.
-- Removed `MonitorId::get_native_identifier()` in favor of platform-specific traits in the `os`
+- Removed `MonitorId::get_native_identifer()` in favor of platform-specific traits in the `os`
   module.
 - Changed `get_available_monitors()` and `get_primary_monitor()` to be methods of `EventsLoop`
   instead of stand-alone methods.

CONTRIBUTING.md

@@ -42,9 +42,11 @@ Once your PR is deemed ready, the merging maintainer will take care of resolving
 `CHANGELOG.md` (but you must resolve other conflicts yourself). Doing this requires that you check the
 "give contributors write access to the branch" checkbox when creating the PR.
 
-## Maintainers
+## Maintainers & Testers
 
-The current maintainers for each platform are listed in the [CODEOWNERS](.github/CODEOWNERS) file.
+The current maintainers are listed in the [CODEOWNERS](.github/CODEOWNERS) file.
+
+If you are interested in being pinged when testing is needed for a specific platform, please add yourself to the [Testers and Contributors](https://github.com/rust-windowing/winit/wiki/Testers-and-Contributors) table!
 
 ## Release process
 

Cargo.toml

@@ -1,16 +1,16 @@
 [package]
 name = "winit"
-version = "0.29.11"
+version = "0.29.10"
 authors = ["The winit contributors", "Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform window creation library."
+edition = "2021"
 keywords = ["windowing"]
+license = "Apache-2.0"
 readme = "README.md"
+repository = "https://github.com/rust-windowing/winit"
 documentation = "https://docs.rs/winit"
 categories = ["gui"]
-rust-version.workspace = true
+rust-version = "1.70.0"
-repository.workspace = true
-license.workspace = true
-edition.workspace = true
 
 [package.metadata.docs.rs]
 features = [
@@ -22,6 +22,7 @@ features = [
     # Enabled to get docs to compile
     "android-native-activity",
 ]
+default-target = "x86_64-unknown-linux-gnu"
 # These are all tested in CI
 targets = [
     # Windows
@@ -41,7 +42,6 @@ targets = [
 ]
 rustdoc-args = ["--cfg", "docsrs"]
 
-# Features are documented in either `lib.rs` or under `winit::platform`.
 [features]
 default = ["rwh_06", "x11", "wayland", "wayland-dlopen", "wayland-csd-adwaita"]
 x11 = ["x11-dl", "bytemuck", "percent-encoding", "xkbcommon-dl/x11", "x11rb"]
@@ -52,8 +52,7 @@ wayland-csd-adwaita-crossfont = ["sctk-adwaita", "sctk-adwaita/crossfont"]
 wayland-csd-adwaita-notitle = ["sctk-adwaita"]
 android-native-activity = ["android-activity/native-activity"]
 android-game-activity = ["android-activity/game-activity"]
-serde = ["dep:serde", "cursor-icon/serde", "smol_str/serde", "dpi/serde"]
+serde = ["dep:serde", "cursor-icon/serde", "smol_str/serde"]
-mint = ["dpi/mint"]
 rwh_04 = ["dep:rwh_04", "ndk/rwh_04"]
 rwh_05 = ["dep:rwh_05", "ndk/rwh_05"]
 rwh_06 = ["dep:rwh_06", "ndk/rwh_06"]
@@ -65,12 +64,13 @@ cfg_aliases = "0.2.0"
 bitflags = "2"
 cursor-icon = "1.1.0"
 log = "0.4"
+mint = { version = "0.5.6", optional = true }
+once_cell = "1.12"
 rwh_04 = { package = "raw-window-handle", version = "0.4", optional = true }
 rwh_05 = { package = "raw-window-handle", version = "0.5.2", features = ["std"], optional = true }
 rwh_06 = { package = "raw-window-handle", version = "0.6", features = ["std"], optional = true }
-serde = { workspace = true, optional = true }
+serde = { version = "1", optional = true, features = ["serde_derive"] }
 smol_str = "0.2.0"
-dpi = { path = "dpi" }
 
 [dev-dependencies]
 image = { version = "0.24.0", default-features = false, features = ["png"] }
@@ -189,7 +189,7 @@ wayland-protocols = { version = "0.31.0", features = [ "staging"], optional = tr
 wayland-protocols-plasma = { version = "0.2.0", features = [ "client" ], optional = true }
 x11-dl = { version = "2.18.5", optional = true }
 x11rb = { version = "0.13.0", default-features = false, features = ["allow-unsafe-code", "dl-libxcb", "randr", "resource_manager", "xinput", "xkb"], optional = true }
-xkbcommon-dl = "0.4.2"
+xkbcommon-dl = "0.4.0"
 
 [target.'cfg(target_os = "redox")'.dependencies]
 orbclient = { version = "0.3.47", default-features = false }
@@ -255,23 +255,11 @@ concurrent-queue = { version = "2", default-features = false }
 console_log = "1"
 web-sys = { version = "0.3.22", features = ['CanvasRenderingContext2d'] }
 
-[[example]]
-doc-scrape-examples = true
-name = "full"
-
 [workspace]
-resolver = "2"
 members = [
-    "dpi",
     "run-wasm",
 ]
 
-[workspace.package]
+[[example]]
-rust-version = "1.70.0"
+doc-scrape-examples = true
-repository = "https://github.com/rust-windowing/winit"
+name = "window"
-license = "Apache-2.0"
-edition = "2021"
-
-[workspace.dependencies]
-serde = { version = "1", features = ["serde_derive"] }
-mint = "0.5.6"

FEATURES.md

@@ -3,8 +3,8 @@
 Winit aims to expose an interface that abstracts over window creation and input handling and can
 be used to create both games and applications. It supports the following main graphical platforms:
 - Desktop
-  - Windows
+  - Windows 7+ (10+ is tested regularly)
-  - macOS
+  - macOS 10.7+ (10.14+ is tested regularly)
   - Unix
     - via X11
     - via Wayland
@@ -13,6 +13,9 @@ be used to create both games and applications. It supports the following main gr
   - iOS
   - Android
 - Web
+  - Chrome
+  - Firefox
+  - Safari 13.1+
 
 Most platforms expose capabilities that cannot be meaningfully transposed onto others. Winit does not
 aim to support every single feature of every platform, but rather to abstract over the common features
@@ -148,6 +151,7 @@ If your PR makes notable changes to Winit's features, please update this section
 * Setting the X11 parent window
 
 ### iOS
+* `winit` has a minimum OS requirement of iOS 8
 * Get the `UIScreen` object pointer
 * Setting the `UIView` hidpi factor
 * Valid orientations
@@ -160,6 +164,9 @@ If your PR makes notable changes to Winit's features, please update this section
 ### Web
 * Get if the systems preferred color scheme is "dark"
 
+## Usability
+* `serde`: Enables serialization/deserialization of certain types with Serde. (Maintainer: @Osspial)
+
 ## Compatibility Matrix
 
 Legend:

README.md

@@ -8,7 +8,7 @@
 
 ```toml
 [dependencies]
-winit = "0.29.11"
+winit = "0.29.10"
 ```
 
 ## [Documentation](https://docs.rs/winit)
@@ -33,6 +33,14 @@ Winit is designed to be a low-level brick in a hierarchy of libraries. Consequen
 show something on the window you need to use the platform-specific getters provided by winit, or
 another library.
 
+### Cargo Features
+
+Winit provides the following features, which can be enabled in your `Cargo.toml` file:
+* `serde`: Enables serialization/deserialization of certain types with [Serde](https://crates.io/crates/serde).
+* `x11` (enabled by default): On Unix platform, compiles with the X11 backend
+* `wayland` (enabled by default): On Unix platform, compiles with the Wayland backend
+* `mint`: Enables mint (math interoperability standard types) conversions.
+
 ## MSRV Policy
 
 This crate's Minimum Supported Rust Version (MSRV) is **1.70**. Changes to
@@ -63,4 +71,118 @@ same MSRV policy.
 
 ### Platform-specific usage
 
-Check out the [`winit::platform`](https://rust-windowing.github.io/winit/winit/platform/index.html) module for platform-specific usage.
+#### Wayland
+
+Note that windows don't appear on Wayland until you draw/present to them.
+
+#### Web
+
+To run the web example: `cargo run-wasm --example web`
+
+Winit supports compiling to the `wasm32-unknown-unknown` target with `web-sys`.
+
+On the web platform, a Winit window is backed by a `<canvas>` element. You can
+either [provide Winit with a `<canvas>` element][web with_canvas], or [let Winit
+create a `<canvas>` element which you can then retrieve][web canvas getter] and
+insert it into the DOM yourself.
+
+For the example code using Winit on Web, check out the [web example]. For
+information on using Rust on WebAssembly, check out the [Rust and WebAssembly
+book].
+
+[web with_canvas]: https://docs.rs/winit/latest/wasm32-unknown-unknown/winit/platform/web/trait.WindowBuilderExtWebSys.html#tymethod.with_canvas
+[web canvas getter]: https://docs.rs/winit/latest/wasm32-unknown-unknown/winit/platform/web/trait.WindowExtWebSys.html#tymethod.canvas
+[web example]: ./examples/web.rs
+[Rust and WebAssembly book]: https://rustwasm.github.io/book/
+
+#### Android
+
+The Android backend builds on (and exposes types from) the [`ndk`](https://docs.rs/ndk/latest/ndk/) crate.
+
+Native Android applications need some form of "glue" crate that is responsible
+for defining the main entry point for your Rust application as well as tracking
+various life-cycle events and synchronizing with the main JVM thread.
+
+Winit uses the [android-activity](https://github.com/rib/android-activity) as a
+glue crate (prior to `0.28` it used
+[ndk-glue](https://github.com/rust-windowing/android-ndk-rs/tree/master/ndk-glue)).
+
+The version of the glue crate that your application depends on _must_ match the
+version that Winit depends on because the glue crate is responsible for your
+application's main entry point. If Cargo resolves multiple versions, they will
+clash.
+
+`winit` glue compatibility table:
+
+| winit |       ndk-glue               |
+| :---: | :--------------------------: |
+| 0.29  | `android-activity = "0.5"`   |
+| 0.28  | `android-activity = "0.4"`   |
+| 0.27  | `ndk-glue = "0.7"`           |
+| 0.26  | `ndk-glue = "0.5"`           |
+| 0.25  | `ndk-glue = "0.3"`           |
+| 0.24  | `ndk-glue = "0.2"`           |
+
+The recommended way to avoid a conflict with the glue version is to avoid explicitly
+depending on the `android-activity` crate, and instead consume the API that
+is re-exported by Winit under `winit::platform::android::activity::*`
+
+Running on an Android device needs a dynamic system library. Add this to Cargo.toml:
+
+```toml
+[lib]
+name = "main"
+crate-type = ["cdylib"]
+```
+
+All Android applications are based on an `Activity` subclass, and the
+`android-activity` crate is designed to support different choices for this base
+class. Your application _must_ specify the base class it needs via a feature flag:
+
+| Base Class       | Feature Flag      |  Notes  |
+| :--------------: | :---------------: | :-----: |
+| `NativeActivity` | `android-native-activity` | Built-in to Android - it is possible to use without compiling any Java or Kotlin code. Java or Kotlin code may be needed to subclass `NativeActivity` to access some platform features. It does not derive from the [`AndroidAppCompat`] base class.|
+| [`GameActivity`] | `android-game-activity`   | Derives from [`AndroidAppCompat`], a defacto standard `Activity` base class that helps support a wider range of Android versions. Requires a build system that can compile Java or Kotlin and fetch Android dependencies from a [Maven repository][agdk_jetpack] (or link with an embedded [release][agdk_releases] of [`GameActivity`]) |
+
+[`GameActivity`]: https://developer.android.com/games/agdk/game-activity
+[`GameTextInput`]: https://developer.android.com/games/agdk/add-support-for-text-input
+[`AndroidAppCompat`]: https://developer.android.com/reference/androidx/appcompat/app/AppCompatActivity
+[agdk_jetpack]: https://developer.android.com/jetpack/androidx/releases/games
+[agdk_releases]: https://developer.android.com/games/agdk/download#agdk-libraries
+[Gradle]: https://developer.android.com/studio/build
+
+For more details, refer to these `android-activity` [example applications](https://github.com/rust-mobile/android-activity/tree/main/examples).
+
+##### Converting from `ndk-glue` to `android-activity`
+
+If your application is currently based on `NativeActivity` via the `ndk-glue` crate and building with `cargo apk`, then the minimal changes would be:
+1. Remove `ndk-glue` from your `Cargo.toml`
+2. Enable the `"android-native-activity"` feature for Winit: `winit = { version = "0.29.10", features = [ "android-native-activity" ] }`
+3. Add an `android_main` entrypoint (as above), instead of using the '`[ndk_glue::main]` proc macro from `ndk-macros` (optionally add a dependency on `android_logger` and initialize logging as above).
+4. Pass a clone of the `AndroidApp` that your application receives to Winit when building your event loop (as shown above).
+
+#### MacOS
+
+A lot of functionality expects the application to be ready before you start
+doing anything; this includes creating windows, fetching monitors, drawing,
+and so on, see issues [#2238], [#2051] and [#2087].
+
+If you encounter problems, you should try doing your initialization inside
+`Event::Resumed`.
+
+#### iOS
+
+Similar to macOS, iOS's main `UIApplicationMain` does some init work that's required
+by all UI-related code (see issue [#1705]). It would be best to consider creating your windows
+inside `Event::Resumed`.
+
+
+[#2238]: https://github.com/rust-windowing/winit/issues/2238
+[#2051]: https://github.com/rust-windowing/winit/issues/2051
+[#2087]: https://github.com/rust-windowing/winit/issues/2087
+[#1705]: https://github.com/rust-windowing/winit/issues/1705
+
+#### Redox OS
+
+Redox OS has some functionality not yet present that will be implemented when
+its orbital display server provides it.

dpi/Cargo.toml

@@ -1,39 +0,0 @@
-[package]
-name = "dpi"
-version = "0.0.0"
-description = "Types for handling UI scaling"
-keywords = ["DPI", "HiDPI", "scale-factor"]
-categories = ["gui"]
-rust-version.workspace = true
-repository.workspace = true
-license.workspace = true
-edition.workspace = true
-
-[features]
-serde = ["dep:serde"]
-mint = ["dep:mint"]
-
-[dependencies]
-serde = { workspace = true, optional = true }
-mint = { workspace = true, optional = true }
-
-[package.metadata.docs.rs]
-features = ["serde", "mint"]
-# These are all tested in CI
-targets = [
-    # Windows
-    "i686-pc-windows-msvc",
-    "x86_64-pc-windows-msvc",
-    # macOS
-    "x86_64-apple-darwin",
-    # Unix (X11 & Wayland)
-    "i686-unknown-linux-gnu",
-    "x86_64-unknown-linux-gnu",
-    # iOS
-    "x86_64-apple-ios",
-    # Android
-    "aarch64-linux-android",
-    # Web
-    "wasm32-unknown-unknown",
-]
-rustdoc-args = ["--cfg", "docsrs"]

dpi/LICENSE

@@ -1 +0,0 @@
-../LICENSE

examples/child_window.rs

@@ -1,3 +1,10 @@
+#[cfg(all(
+    feature = "rwh_06",
+    any(x11_platform, macos_platform, windows_platform)
+))]
+#[path = "util/fill.rs"]
+mod fill;
+
 #[cfg(all(
     feature = "rwh_06",
     any(x11_platform, macos_platform, windows_platform)
@@ -6,57 +13,58 @@
 fn main() -> Result<(), impl std::error::Error> {
     use std::collections::HashMap;
 
-    use winit::dpi::{LogicalPosition, LogicalSize, Position};
+    use winit::{
-    use winit::event::{ElementState, Event, KeyEvent, WindowEvent};
+        dpi::{LogicalPosition, LogicalSize, Position},
-    use winit::event_loop::{ActiveEventLoop, EventLoop};
+        event::{ElementState, Event, KeyEvent, WindowEvent},
-    use winit::raw_window_handle::HasRawWindowHandle;
+        event_loop::{EventLoop, EventLoopWindowTarget},
-    use winit::window::Window;
+        raw_window_handle::HasRawWindowHandle,
+        window::{Window, WindowId},
+    };
 
-    #[path = "util/fill.rs"]
+    fn spawn_child_window(
-    mod fill;
+        parent: &Window,
-
+        event_loop: &EventLoopWindowTarget,
-    fn spawn_child_window(parent: &Window, event_loop: &ActiveEventLoop) -> Window {
+        windows: &mut HashMap<WindowId, Window>,
+    ) {
         let parent = parent.raw_window_handle().unwrap();
-        let mut window_attributes = Window::default_attributes()
+        let mut builder = Window::builder()
             .with_title("child window")
             .with_inner_size(LogicalSize::new(200.0f32, 200.0f32))
             .with_position(Position::Logical(LogicalPosition::new(0.0, 0.0)))
             .with_visible(true);
         // `with_parent_window` is unsafe. Parent window must be a valid window.
-        window_attributes = unsafe { window_attributes.with_parent_window(Some(parent)) };
+        builder = unsafe { builder.with_parent_window(Some(parent)) };
+        let child_window = builder.build(event_loop).unwrap();
 
-        event_loop.create_window(window_attributes).unwrap()
+        let id = child_window.id();
+        windows.insert(id, child_window);
+        println!("child window created with id: {id:?}");
     }
 
     let mut windows = HashMap::new();
 
     let event_loop: EventLoop<()> = EventLoop::new().unwrap();
-    let mut parent_window_id = None;
+    let parent_window = Window::builder()
+        .with_title("parent window")
+        .with_position(Position::Logical(LogicalPosition::new(0.0, 0.0)))
+        .with_inner_size(LogicalSize::new(640.0f32, 480.0f32))
+        .build(&event_loop)
+        .unwrap();
 
-    event_loop.run(move |event: Event<()>, event_loop| {
+    println!("parent window: {parent_window:?})");
-        match event {
-            Event::Resumed => {
-                let attributes = Window::default_attributes()
-                    .with_title("parent window")
-                    .with_position(Position::Logical(LogicalPosition::new(0.0, 0.0)))
-                    .with_inner_size(LogicalSize::new(640.0f32, 480.0f32));
-                let window = event_loop.create_window(attributes).unwrap();
 
-                parent_window_id = Some(window.id());
+    event_loop.run(move |event: Event<()>, elwt| {
-
+        if let Event::WindowEvent { event, window_id } = event {
-                println!("Parent window id: {parent_window_id:?})");
+            match event {
-                windows.insert(window.id(), window);
-            }
-            Event::WindowEvent { window_id, event } => match event {
                 WindowEvent::CloseRequested => {
                     windows.clear();
-                    event_loop.exit();
+                    elwt.exit();
                 }
                 WindowEvent::CursorEntered { device_id: _ } => {
                     // On x11, println when the cursor entered in a window even if the child window is created
                     // by some key inputs.
                     // the child windows are always placed at (0, 0) with size (200, 200) in the parent window,
-                    // so we also can see this log when we move the cursor around (200, 200) in parent window.
+                    // so we also can see this log when we move the cursor arround (200, 200) in parent window.
                     println!("cursor entered in the window {window_id:?}");
                 }
                 WindowEvent::KeyboardInput {
@@ -67,11 +75,7 @@ fn main() -> Result<(), impl std::error::Error> {
                         },
                     ..
                 } => {
-                    let parent_window = windows.get(&parent_window_id.unwrap()).unwrap();
+                    spawn_child_window(&parent_window, elwt, &mut windows);
-                    let child_window = spawn_child_window(parent_window, event_loop);
-                    let child_id = child_window.id();
-                    println!("Child window created with id: {child_id:?}");
-                    windows.insert(child_id, child_window);
                 }
                 WindowEvent::RedrawRequested => {
                     if let Some(window) = windows.get(&window_id) {
@@ -79,16 +83,15 @@ fn main() -> Result<(), impl std::error::Error> {
                     }
                 }
                 _ => (),
-            },
+            }
-            _ => (),
         }
     })
 }
 
-#[cfg(all(
+#[cfg(not(all(
     feature = "rwh_06",
-    not(any(x11_platform, macos_platform, windows_platform))
+    any(x11_platform, macos_platform, windows_platform)
-))]
+)))]
 fn main() {
     panic!("This example is supported only on x11, macOS, and Windows, with the `rwh_06` feature enabled.");
 }

examples/control_flow.rs

@@ -37,14 +37,17 @@ fn main() -> Result<(), impl std::error::Error> {
     println!("Press 'Esc' to close the window.");
 
     let event_loop = EventLoop::new().unwrap();
+    let window = Window::builder()
+        .with_title("Press 1, 2, 3 to change control flow mode. Press R to toggle redraw requests.")
+        .build(&event_loop)
+        .unwrap();
 
     let mut mode = Mode::Wait;
     let mut request_redraw = false;
     let mut wait_cancelled = false;
     let mut close_requested = false;
 
-    let mut window = None;
+    event_loop.run(move |event, elwt| {
-    event_loop.run(move |event, event_loop| {
         use winit::event::StartCause;
         println!("{event:?}");
         match event {
@@ -54,12 +57,6 @@ fn main() -> Result<(), impl std::error::Error> {
                     _ => false,
                 }
             }
-            Event::Resumed => {
-                let window_attributes = Window::default_attributes().with_title(
-                    "Press 1, 2, 3 to change control flow mode. Press R to toggle redraw requests.",
-                );
-                window = Some(event_loop.create_window(window_attributes).unwrap());
-            }
             Event::WindowEvent { event, .. } => match event {
                 WindowEvent::CloseRequested => {
                     close_requested = true;
@@ -73,7 +70,7 @@ fn main() -> Result<(), impl std::error::Error> {
                         },
                     ..
                 } => match key.as_ref() {
-                    // WARNING: Consider using `key_without_modifiers()` if available on your platform.
+                    // WARNING: Consider using `key_without_modifers()` if available on your platform.
                     // See the `key_binding` example
                     Key::Character("1") => {
                         mode = Mode::Wait;
@@ -97,34 +94,32 @@ fn main() -> Result<(), impl std::error::Error> {
                     _ => (),
                 },
                 WindowEvent::RedrawRequested => {
-                    let window = window.as_ref().unwrap();
+                    fill::fill_window(&window);
-                    window.pre_present_notify();
-                    fill::fill_window(window);
                 }
                 _ => (),
             },
             Event::AboutToWait => {
                 if request_redraw && !wait_cancelled && !close_requested {
-                    window.as_ref().unwrap().request_redraw();
+                    window.request_redraw();
                 }
 
                 match mode {
-                    Mode::Wait => event_loop.set_control_flow(ControlFlow::Wait),
+                    Mode::Wait => elwt.set_control_flow(ControlFlow::Wait),
                     Mode::WaitUntil => {
                         if !wait_cancelled {
-                            event_loop.set_control_flow(ControlFlow::WaitUntil(
+                            elwt.set_control_flow(ControlFlow::WaitUntil(
                                 time::Instant::now() + WAIT_TIME,
                             ));
                         }
                     }
                     Mode::Poll => {
                         thread::sleep(POLL_SLEEP_TIME);
-                        event_loop.set_control_flow(ControlFlow::Poll);
+                        elwt.set_control_flow(ControlFlow::Poll);
                     }
                 };
 
                 if close_requested {
-                    event_loop.exit();
+                    elwt.exit();
                 }
             }
             _ => (),

examples/cursor.rs

@@ -0,0 +1,88 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    window::{CursorIcon, Window},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder().build(&event_loop).unwrap();
+    window.set_title("A fantastic window!");
+
+    let mut cursor_idx = 0;
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            state: ElementState::Pressed,
+                            ..
+                        },
+                    ..
+                } => {
+                    println!("Setting cursor to \"{:?}\"", CURSORS[cursor_idx]);
+                    window.set_cursor(CURSORS[cursor_idx]);
+                    if cursor_idx < CURSORS.len() - 1 {
+                        cursor_idx += 1;
+                    } else {
+                        cursor_idx = 0;
+                    }
+                }
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                WindowEvent::CloseRequested => {
+                    elwt.exit();
+                }
+                _ => (),
+            }
+        }
+    })
+}
+
+const CURSORS: &[CursorIcon] = &[
+    CursorIcon::Default,
+    CursorIcon::Crosshair,
+    CursorIcon::Pointer,
+    CursorIcon::Move,
+    CursorIcon::Text,
+    CursorIcon::Wait,
+    CursorIcon::Help,
+    CursorIcon::Progress,
+    CursorIcon::NotAllowed,
+    CursorIcon::ContextMenu,
+    CursorIcon::Cell,
+    CursorIcon::VerticalText,
+    CursorIcon::Alias,
+    CursorIcon::Copy,
+    CursorIcon::NoDrop,
+    CursorIcon::Grab,
+    CursorIcon::Grabbing,
+    CursorIcon::AllScroll,
+    CursorIcon::ZoomIn,
+    CursorIcon::ZoomOut,
+    CursorIcon::EResize,
+    CursorIcon::NResize,
+    CursorIcon::NeResize,
+    CursorIcon::NwResize,
+    CursorIcon::SResize,
+    CursorIcon::SeResize,
+    CursorIcon::SwResize,
+    CursorIcon::WResize,
+    CursorIcon::EwResize,
+    CursorIcon::NsResize,
+    CursorIcon::NeswResize,
+    CursorIcon::NwseResize,
+    CursorIcon::ColResize,
+    CursorIcon::RowResize,
+];

examples/cursor_grab.rs

@@ -0,0 +1,73 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{DeviceEvent, ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::{Key, ModifiersState, NamedKey},
+    window::{CursorGrabMode, Window},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("Super Cursor Grab'n'Hide Simulator 9000")
+        .build(&event_loop)
+        .unwrap();
+
+    let mut modifiers = ModifiersState::default();
+
+    event_loop.run(move |event, elwt| match event {
+        Event::WindowEvent { event, .. } => match event {
+            WindowEvent::CloseRequested => elwt.exit(),
+            WindowEvent::KeyboardInput {
+                event:
+                    KeyEvent {
+                        logical_key: key,
+                        state: ElementState::Released,
+                        ..
+                    },
+                ..
+            } => {
+                let result = match key {
+                    Key::Named(NamedKey::Escape) => {
+                        elwt.exit();
+                        Ok(())
+                    }
+                    Key::Character(ch) => match ch.to_lowercase().as_str() {
+                        "g" => window.set_cursor_grab(CursorGrabMode::Confined),
+                        "l" => window.set_cursor_grab(CursorGrabMode::Locked),
+                        "a" => window.set_cursor_grab(CursorGrabMode::None),
+                        "h" => {
+                            window.set_cursor_visible(modifiers.shift_key());
+                            Ok(())
+                        }
+                        _ => Ok(()),
+                    },
+                    _ => Ok(()),
+                };
+
+                if let Err(err) = result {
+                    println!("error: {err}");
+                }
+            }
+            WindowEvent::ModifiersChanged(new) => modifiers = new.state(),
+            WindowEvent::RedrawRequested => fill::fill_window(&window),
+            _ => (),
+        },
+        Event::DeviceEvent { event, .. } => match event {
+            DeviceEvent::MouseMotion { delta } => println!("mouse moved: {delta:?}"),
+            DeviceEvent::Button { button, state } => match state {
+                ElementState::Pressed => println!("mouse button {button} pressed"),
+                ElementState::Released => println!("mouse button {button} released"),
+            },
+            _ => (),
+        },
+        _ => (),
+    })
+}

examples/custom_cursors.rs

@@ -0,0 +1,143 @@
+#![allow(clippy::single_match, clippy::disallowed_methods)]
+
+#[cfg(not(web_platform))]
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::{EventLoop, EventLoopWindowTarget},
+    keyboard::Key,
+    window::{CursorIcon, CustomCursor, Window},
+};
+#[cfg(web_platform)]
+use {
+    std::sync::atomic::{AtomicU64, Ordering},
+    std::time::Duration,
+    winit::platform::web::CustomCursorExtWebSys,
+};
+
+#[cfg(web_platform)]
+static COUNTER: AtomicU64 = AtomicU64::new(0);
+
+fn decode_cursor(bytes: &[u8], window_target: &EventLoopWindowTarget) -> CustomCursor {
+    let img = image::load_from_memory(bytes).unwrap().to_rgba8();
+    let samples = img.into_flat_samples();
+    let (_, w, h) = samples.extents();
+    let (w, h) = (w as u16, h as u16);
+    let builder = CustomCursor::from_rgba(samples.samples, w, h, w / 2, h / 2).unwrap();
+
+    builder.build(window_target)
+}
+
+#[cfg(not(web_platform))]
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    #[cfg(not(web_platform))]
+    SimpleLogger::new()
+        .with_level(log::LevelFilter::Info)
+        .init()
+        .unwrap();
+    #[cfg(web_platform)]
+    console_log::init_with_level(log::Level::Debug).unwrap();
+
+    let event_loop = EventLoop::new().unwrap();
+    let builder = Window::builder().with_title("A fantastic window!");
+    #[cfg(web_platform)]
+    let builder = {
+        use winit::platform::web::WindowBuilderExtWebSys;
+        builder.with_append(true)
+    };
+    let window = builder.build(&event_loop).unwrap();
+
+    let mut cursor_idx = 0;
+    let mut cursor_visible = true;
+
+    let custom_cursors = [
+        decode_cursor(include_bytes!("data/cross.png"), &event_loop),
+        decode_cursor(include_bytes!("data/cross2.png"), &event_loop),
+        decode_cursor(include_bytes!("data/gradient.png"), &event_loop),
+    ];
+
+    event_loop.run(move |event, _elwt| match event {
+        Event::WindowEvent { event, .. } => match event {
+            WindowEvent::KeyboardInput {
+                event:
+                    KeyEvent {
+                        state: ElementState::Pressed,
+                        logical_key: key,
+                        ..
+                    },
+                ..
+            } => match key.as_ref() {
+                Key::Character("1") => {
+                    log::debug!("Setting cursor to {:?}", cursor_idx);
+                    window.set_cursor(custom_cursors[cursor_idx].clone());
+                    cursor_idx = (cursor_idx + 1) % 3;
+                }
+                Key::Character("2") => {
+                    log::debug!("Setting cursor icon to default");
+                    window.set_cursor(CursorIcon::default());
+                }
+                Key::Character("3") => {
+                    cursor_visible = !cursor_visible;
+                    log::debug!("Setting cursor visibility to {:?}", cursor_visible);
+                    window.set_cursor_visible(cursor_visible);
+                }
+                #[cfg(web_platform)]
+                Key::Character("4") => {
+                    log::debug!("Setting cursor to a random image from an URL");
+                    window.set_cursor(
+                        CustomCursor::from_url(
+                            format!(
+                                "https://picsum.photos/128?random={}",
+                                COUNTER.fetch_add(1, Ordering::Relaxed)
+                            ),
+                            64,
+                            64,
+                        )
+                        .build(_elwt),
+                    );
+                }
+                #[cfg(web_platform)]
+                Key::Character("5") => {
+                    log::debug!("Setting cursor to an animation");
+                    window.set_cursor(
+                        CustomCursor::from_animation(
+                            Duration::from_secs(3),
+                            vec![
+                                custom_cursors[0].clone(),
+                                custom_cursors[1].clone(),
+                                CustomCursor::from_url(
+                                    format!(
+                                        "https://picsum.photos/128?random={}",
+                                        COUNTER.fetch_add(1, Ordering::Relaxed)
+                                    ),
+                                    64,
+                                    64,
+                                )
+                                .build(_elwt),
+                            ],
+                        )
+                        .unwrap()
+                        .build(_elwt),
+                    );
+                }
+                _ => {}
+            },
+            WindowEvent::RedrawRequested => {
+                #[cfg(not(web_platform))]
+                fill::fill_window(&window);
+            }
+            WindowEvent::CloseRequested => {
+                #[cfg(not(web_platform))]
+                _elwt.exit();
+            }
+            _ => (),
+        },
+        Event::AboutToWait => {
+            window.request_redraw();
+        }
+        _ => {}
+    })
+}

examples/custom_events.rs

@@ -0,0 +1,60 @@
+#![allow(clippy::single_match)]
+
+#[cfg(not(web_platform))]
+fn main() -> Result<(), impl std::error::Error> {
+    use simple_logger::SimpleLogger;
+    use winit::{
+        event::{Event, WindowEvent},
+        event_loop::EventLoop,
+        window::Window,
+    };
+
+    #[path = "util/fill.rs"]
+    mod fill;
+
+    #[derive(Debug, Clone, Copy)]
+    enum CustomEvent {
+        Timer,
+    }
+
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::<CustomEvent>::with_user_event().build().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .build(&event_loop)
+        .unwrap();
+
+    // `EventLoopProxy` allows you to dispatch custom events to the main Winit event
+    // loop from any thread.
+    let event_loop_proxy = event_loop.create_proxy();
+
+    std::thread::spawn(move || {
+        // Wake up the `event_loop` once every second and dispatch a custom event
+        // from a different thread.
+        loop {
+            std::thread::sleep(std::time::Duration::from_secs(1));
+            event_loop_proxy.send_event(CustomEvent::Timer).ok();
+        }
+    });
+
+    event_loop.run(move |event, elwt| match event {
+        Event::UserEvent(event) => println!("user event: {event:?}"),
+        Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            ..
+        } => elwt.exit(),
+        Event::WindowEvent {
+            event: WindowEvent::RedrawRequested,
+            ..
+        } => {
+            fill::fill_window(&window);
+        }
+        _ => (),
+    })
+}
+
+#[cfg(web_platform)]
+fn main() {
+    panic!("This example is not supported on web.");
+}

examples/drag_window.rs

@@ -0,0 +1,105 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, KeyEvent, MouseButton, StartCause, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::Key,
+    window::{Window, WindowId},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window_1 = Window::builder().build(&event_loop).unwrap();
+    let window_2 = Window::builder().build(&event_loop).unwrap();
+
+    let mut switched = false;
+    let mut entered_id = window_2.id();
+    let mut cursor_location = None;
+
+    event_loop.run(move |event, elwt| match event {
+        Event::NewEvents(StartCause::Init) => {
+            eprintln!("Switch which window is to be dragged by pressing \"x\".")
+        }
+        Event::WindowEvent { event, window_id } => match event {
+            WindowEvent::CloseRequested => elwt.exit(),
+            WindowEvent::CursorMoved { position, .. } => cursor_location = Some(position),
+            WindowEvent::MouseInput { state, button, .. } => {
+                let window = if (window_id == window_1.id() && switched)
+                    || (window_id == window_2.id() && !switched)
+                {
+                    &window_2
+                } else {
+                    &window_1
+                };
+
+                match (button, state) {
+                    (MouseButton::Left, ElementState::Pressed) => window.drag_window().unwrap(),
+                    (MouseButton::Right, ElementState::Released) => {
+                        if let Some(position) = cursor_location {
+                            window.show_window_menu(position);
+                        }
+                    }
+                    _ => (),
+                }
+            }
+            WindowEvent::CursorEntered { .. } => {
+                entered_id = window_id;
+                name_windows(entered_id, switched, &window_1, &window_2)
+            }
+            WindowEvent::KeyboardInput {
+                event:
+                    KeyEvent {
+                        state: ElementState::Released,
+                        logical_key: Key::Character(c),
+                        ..
+                    },
+                ..
+            } => match c.as_str() {
+                "x" => {
+                    switched = !switched;
+                    name_windows(entered_id, switched, &window_1, &window_2);
+                    println!("Switched!")
+                }
+                "d" => {
+                    let window = if (window_id == window_1.id() && switched)
+                        || (window_id == window_2.id() && !switched)
+                    {
+                        &window_2
+                    } else {
+                        &window_1
+                    };
+
+                    window.set_decorations(!window.is_decorated());
+                }
+                _ => (),
+            },
+            WindowEvent::RedrawRequested => {
+                if window_id == window_1.id() {
+                    fill::fill_window(&window_1);
+                } else if window_id == window_2.id() {
+                    fill::fill_window(&window_2);
+                }
+            }
+            _ => (),
+        },
+
+        _ => (),
+    })
+}
+
+fn name_windows(window_id: WindowId, switched: bool, window_1: &Window, window_2: &Window) {
+    let (drag_target, other) =
+        if (window_id == window_1.id() && switched) || (window_id == window_2.id() && !switched) {
+            (&window_2, &window_1)
+        } else {
+            (&window_1, &window_2)
+        };
+    drag_target.set_title("drag target");
+    other.set_title("winit window");
+}

examples/focus.rs

@@ -0,0 +1,56 @@
+#![allow(clippy::single_match)]
+
+//! Example for focusing a window.
+
+use simple_logger::SimpleLogger;
+#[cfg(not(web_platform))]
+use std::time;
+#[cfg(web_platform)]
+use web_time as time;
+use winit::{
+    event::{Event, StartCause, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
+        .build(&event_loop)
+        .unwrap();
+
+    let mut deadline = time::Instant::now() + time::Duration::from_secs(3);
+    event_loop.run(move |event, elwt| {
+        match event {
+            Event::NewEvents(StartCause::ResumeTimeReached { .. }) => {
+                // Timeout reached; focus the window.
+                println!("Re-focusing the window.");
+                deadline += time::Duration::from_secs(3);
+                window.focus_window();
+            }
+            Event::WindowEvent { event, window_id } if window_id == window.id() => match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::RedrawRequested => {
+                    // Notify the windowing system that we'll be presenting to the window.
+                    window.pre_present_notify();
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            },
+            Event::AboutToWait => {
+                window.request_redraw();
+            }
+
+            _ => (),
+        }
+
+        elwt.set_control_flow(winit::event_loop::ControlFlow::WaitUntil(deadline));
+    })
+}

examples/full.rs

@@ -1,847 +0,0 @@
-//! An example showcasing various functionality that Winit has.
-//!
-//! Often used by Winit developers to test certain functionality, may be a bit
-//! verbose.
-
-use std::collections::HashMap;
-use std::error::Error;
-#[cfg(not(any(android_platform, ios_platform)))]
-use std::num::NonZeroU32;
-
-use cursor_icon::CursorIcon;
-#[cfg(not(any(android_platform, ios_platform)))]
-use rwh_05::HasRawDisplayHandle;
-#[cfg(not(any(android_platform, ios_platform)))]
-use softbuffer::{Context, Surface};
-
-use winit::dpi::{LogicalSize, PhysicalPosition, PhysicalSize};
-use winit::event::{DeviceEvent, DeviceId, ElementState, Event, Ime, KeyEvent, WindowEvent};
-use winit::event::{MouseButton, MouseScrollDelta};
-use winit::event_loop::{ActiveEventLoop, EventLoop};
-use winit::keyboard::{Key, ModifiersState};
-use winit::window::{
-    Cursor, CursorGrabMode, CustomCursor, Fullscreen, Icon, ResizeDirection, Theme,
-};
-use winit::window::{Window, WindowId};
-
-#[cfg(macos_platform)]
-use winit::platform::macos::{OptionAsAlt, WindowAttributesExtMacOS, WindowExtMacOS};
-#[cfg(any(x11_platform, wayland_platform))]
-use winit::platform::startup_notify::{
-    self, EventLoopExtStartupNotify, WindowAttributesExtStartupNotify, WindowExtStartupNotify,
-};
-
-fn main() -> Result<(), Box<dyn Error>> {
-    let event_loop = EventLoop::<UserEvent>::with_user_event().build()?;
-    let _event_loop_proxy = event_loop.create_proxy();
-
-    // Wire the user event from another thread.
-    #[cfg(not(web_platform))]
-    std::thread::spawn(move || {
-        // Wake up the `event_loop` once every second and dispatch a custom event
-        // from a different thread.
-        println!("Starting to send user event every second");
-        loop {
-            let _ = _event_loop_proxy.send_event(UserEvent::WakeUp);
-            std::thread::sleep(std::time::Duration::from_secs(1));
-        }
-    });
-
-    let mut app = Application::new(&event_loop);
-
-    event_loop.run(move |event, event_loop| match event {
-        Event::NewEvents(_) => (),
-        Event::Resumed => {
-            println!("Resumed the event loop");
-
-            // Create initial window.
-            app.create_window(event_loop, None)
-                .expect("failed to create initial window");
-
-            app.print_help();
-        }
-        Event::AboutToWait => {
-            if app.windows.is_empty() {
-                println!("No windows left, exiting...");
-                event_loop.exit();
-            }
-        }
-        Event::WindowEvent { window_id, event } => {
-            app.handle_window_event(event_loop, window_id, event)
-        }
-        Event::DeviceEvent { device_id, event } => {
-            app.handle_device_event(event_loop, device_id, event)
-        }
-        Event::UserEvent(event) => {
-            println!("User event: {event:?}");
-        }
-        Event::Suspended | Event::LoopExiting | Event::MemoryWarning => (),
-    })?;
-
-    Ok(())
-}
-
-#[allow(dead_code)]
-#[derive(Debug, Clone, Copy)]
-enum UserEvent {
-    WakeUp,
-}
-
-/// Application state and event handling.
-struct Application {
-    /// Custom cursors assets.
-    custom_cursors: Vec<CustomCursor>,
-    /// Application icon.
-    icon: Icon,
-    windows: HashMap<WindowId, WindowState>,
-    /// Drawing context.
-    ///
-    /// With OpenGL it could be EGLDisplay.
-    #[cfg(not(any(android_platform, ios_platform)))]
-    context: Context,
-}
-
-impl Application {
-    fn new<T>(event_loop: &EventLoop<T>) -> Self {
-        // SAFETY: the context is dropped inside the loop, since the state we're using
-        // is moved inside the closure.
-        #[cfg(not(any(android_platform, ios_platform)))]
-        let context = unsafe { Context::from_raw(event_loop.raw_display_handle()).unwrap() };
-
-        // You'll have to choose an icon size at your own discretion. On X11, the desired size varies
-        // by WM, and on Windows, you still have to account for screen scaling. Here we use 32px,
-        // since it seems to work well enough in most cases. Be careful about going too high, or
-        // you'll be bitten by the low-quality downscaling built into the WM.
-        let path = concat!(env!("CARGO_MANIFEST_DIR"), "/examples/data/icon.png");
-
-        // Load icon
-        let icon = {
-            let image = image::open(path)
-                .expect("Failed to open icon path")
-                .into_rgba8();
-            let (width, height) = image.dimensions();
-            let rgba = image.into_raw();
-            Icon::from_rgba(rgba, width, height).expect("Failed to open icon")
-        };
-
-        println!("Loading cursor assets");
-        let decode_cursor = |bytes| {
-            let img = image::load_from_memory(bytes).unwrap().to_rgba8();
-            let samples = img.into_flat_samples();
-            let (_, w, h) = samples.extents();
-            let (w, h) = (w as u16, h as u16);
-            CustomCursor::from_rgba(samples.samples, w, h, w / 2, h / 2).unwrap()
-        };
-        let custom_cursors = vec![
-            event_loop.create_custom_cursor(decode_cursor(include_bytes!("data/cross.png"))),
-            event_loop.create_custom_cursor(decode_cursor(include_bytes!("data/cross2.png"))),
-            event_loop.create_custom_cursor(decode_cursor(include_bytes!("data/gradient.png"))),
-        ];
-
-        Self {
-            #[cfg(not(any(android_platform, ios_platform)))]
-            context,
-            custom_cursors,
-            icon,
-            windows: Default::default(),
-        }
-    }
-
-    fn create_window(
-        &mut self,
-        event_loop: &ActiveEventLoop,
-        _tab_id: Option<String>,
-    ) -> Result<WindowId, Box<dyn Error>> {
-        // TODO read-out activation token.
-
-        #[allow(unused_mut)]
-        let mut window_attributes = Window::default_attributes()
-            .with_title("Winit window")
-            .with_transparent(true)
-            .with_window_icon(Some(self.icon.clone()));
-
-        #[cfg(any(x11_platform, wayland_platform))]
-        if let Some(token) = event_loop.read_token_from_env() {
-            startup_notify::reset_activation_token_env();
-            println!("Using token {:?} to activate a window", token);
-            window_attributes = window_attributes.with_activation_token(token);
-        }
-
-        #[cfg(macos_platform)]
-        if let Some(tab_id) = _tab_id {
-            window_attributes = window_attributes.with_tabbing_identifier(&tab_id);
-        }
-
-        let window = event_loop.create_window(window_attributes)?;
-
-        #[cfg(ios_platform)]
-        {
-            use winit::platform::ios::WindowExtIOS;
-            window.recognize_doubletap_gesture(true);
-            window.recognize_pinch_gesture(true);
-            window.recognize_rotation_gesture(true);
-        }
-
-        #[cfg(not(any(android_platform, ios_platform)))]
-        let surface = {
-            // SAFETY: the surface is dropped before the `window` which
-            // provided it with handle, thus it doesn't outlive it.
-            let mut surface = unsafe { Surface::new(&self.context, &window)? };
-
-            let size = window.inner_size();
-            if let (Some(width), Some(height)) =
-                (NonZeroU32::new(size.width), NonZeroU32::new(size.height))
-            {
-                surface
-                    .resize(width, height)
-                    .expect("failed to resize inner buffer");
-            };
-
-            surface
-        };
-
-        let theme = window.theme().unwrap_or(Theme::Dark);
-        println!("Theme: {theme:?}");
-
-        // Allow IME out of the box.
-        let ime = true;
-        window.set_ime_allowed(ime);
-
-        let state = WindowState {
-            window,
-            custom_idx: self.custom_cursors.len() - 1,
-            cursor_grab: CursorGrabMode::None,
-            named_idx: 0,
-            #[cfg(not(any(android_platform, ios_platform)))]
-            surface,
-            theme,
-            ime,
-            cursor_position: Default::default(),
-            cursor_hidden: Default::default(),
-            modifiers: Default::default(),
-            occluded: Default::default(),
-            rotated: Default::default(),
-            zoom: Default::default(),
-        };
-
-        let window_id = state.window.id();
-        println!("Created new window with id={window_id:?}");
-        self.windows.insert(window_id, state);
-        Ok(window_id)
-    }
-
-    fn handle_action(&mut self, event_loop: &ActiveEventLoop, window_id: WindowId, action: Action) {
-        let state = self.windows.get_mut(&window_id).unwrap();
-        let window = &state.window;
-
-        println!("Executing action: {action:?}");
-        match action {
-            Action::CloseWindow => {
-                let _ = self.windows.remove(&window_id);
-            }
-            Action::CreateNewWindow => {
-                #[cfg(any(x11_platform, wayland_platform))]
-                if let Err(err) = window.request_activation_token() {
-                    println!("Failed to get activation token: {err}");
-                } else {
-                    return;
-                }
-
-                if let Err(err) = self.create_window(event_loop, None) {
-                    eprintln!("Error creating new window: {err}");
-                }
-            }
-            Action::ToggleResizeIncrements => {
-                let new_increments = match window.resize_increments() {
-                    Some(_) => None,
-                    None => Some(LogicalSize::new(25.0, 25.0)),
-                };
-                println!("Had increments: {}", new_increments.is_none());
-                window.set_resize_increments(new_increments);
-            }
-            Action::ToggleCursorVisibility => {
-                state.cursor_hidden = !state.cursor_hidden;
-                window.set_cursor_visible(!state.cursor_hidden);
-            }
-            Action::ToggleResizable => {
-                let resizable = window.is_resizable();
-                window.set_resizable(!resizable);
-            }
-            Action::ToggleDecorations => {
-                let decorated = window.is_decorated();
-                window.set_decorations(!decorated);
-            }
-            Action::ToggleFullscreen => {
-                let fullscreen = if window.fullscreen().is_some() {
-                    None
-                } else {
-                    Some(Fullscreen::Borderless(None))
-                };
-
-                window.set_fullscreen(fullscreen);
-            }
-            Action::ToggleMaximize => {
-                let maximized = window.is_maximized();
-                window.set_maximized(!maximized);
-            }
-            Action::ToggleImeInput => {
-                state.ime = !state.ime;
-                window.set_ime_allowed(state.ime);
-                if let Some(position) = state.ime.then_some(state.cursor_position).flatten() {
-                    window.set_ime_cursor_area(position, PhysicalSize::new(20, 20));
-                }
-            }
-            Action::Minimize => {
-                window.set_minimized(true);
-            }
-            Action::NextCursor => {
-                // Cursor list to cycle through.
-                const CURSORS: &[CursorIcon] = &[
-                    CursorIcon::Default,
-                    CursorIcon::Crosshair,
-                    CursorIcon::Pointer,
-                    CursorIcon::Move,
-                    CursorIcon::Text,
-                    CursorIcon::Wait,
-                    CursorIcon::Help,
-                    CursorIcon::Progress,
-                    CursorIcon::NotAllowed,
-                    CursorIcon::ContextMenu,
-                    CursorIcon::Cell,
-                    CursorIcon::VerticalText,
-                    CursorIcon::Alias,
-                    CursorIcon::Copy,
-                    CursorIcon::NoDrop,
-                    CursorIcon::Grab,
-                    CursorIcon::Grabbing,
-                    CursorIcon::AllScroll,
-                    CursorIcon::ZoomIn,
-                    CursorIcon::ZoomOut,
-                    CursorIcon::EResize,
-                    CursorIcon::NResize,
-                    CursorIcon::NeResize,
-                    CursorIcon::NwResize,
-                    CursorIcon::SResize,
-                    CursorIcon::SeResize,
-                    CursorIcon::SwResize,
-                    CursorIcon::WResize,
-                    CursorIcon::EwResize,
-                    CursorIcon::NsResize,
-                    CursorIcon::NeswResize,
-                    CursorIcon::NwseResize,
-                    CursorIcon::ColResize,
-                    CursorIcon::RowResize,
-                ];
-
-                // Pick the next cursor
-                state.named_idx = (state.named_idx + 1) % CURSORS.len();
-                println!("Setting cursor to \"{:?}\"", CURSORS[state.named_idx]);
-                window.set_cursor(Cursor::Icon(CURSORS[state.named_idx]));
-            }
-            Action::NextCustomCursor => {
-                state.custom_idx = (state.custom_idx + 1) % self.custom_cursors.len();
-                let cursor = Cursor::Custom(self.custom_cursors[state.custom_idx].clone());
-                window.set_cursor(cursor);
-            }
-            Action::CycleCursorGrab => {
-                state.cursor_grab = match state.cursor_grab {
-                    CursorGrabMode::None => CursorGrabMode::Confined,
-                    CursorGrabMode::Confined => CursorGrabMode::Locked,
-                    CursorGrabMode::Locked => CursorGrabMode::None,
-                };
-                println!("Changing cursor grab mode to {:?}", state.cursor_grab);
-                if let Err(err) = window.set_cursor_grab(state.cursor_grab) {
-                    eprintln!("Error setting cursor grab: {err}");
-                }
-            }
-            Action::DragWindow => {
-                if let Err(err) = window.drag_window() {
-                    println!("Error starting window drag: {err}");
-                } else {
-                    println!("Dragging window Window={:?}", window.id());
-                }
-            }
-            Action::DragResizeWindow => {
-                let position = match state.cursor_position {
-                    Some(position) => position,
-                    None => {
-                        println!("Drag-resize requires cursor to be inside the window");
-                        return;
-                    }
-                };
-
-                // The amount of points around the window.
-                const BORDER_SIZE: f64 = 20.0;
-
-                let win_size = window.inner_size();
-                let border_size = BORDER_SIZE * window.scale_factor();
-
-                let x_direction = if position.x < border_size {
-                    ResizeDirection::West
-                } else if position.x > (win_size.width as f64 - border_size) {
-                    ResizeDirection::East
-                } else {
-                    // Use arbitrary direction instead of None for simplicity.
-                    ResizeDirection::SouthEast
-                };
-
-                let y_direction = if position.y < border_size {
-                    ResizeDirection::North
-                } else if position.y > (win_size.height as f64 - border_size) {
-                    ResizeDirection::South
-                } else {
-                    // Use arbitrary direction instead of None for simplicity.
-                    ResizeDirection::SouthEast
-                };
-
-                let direction = match (x_direction, y_direction) {
-                    (ResizeDirection::West, ResizeDirection::North) => ResizeDirection::NorthWest,
-                    (ResizeDirection::West, ResizeDirection::South) => ResizeDirection::SouthWest,
-                    (ResizeDirection::West, _) => ResizeDirection::West,
-                    (ResizeDirection::East, ResizeDirection::North) => ResizeDirection::NorthEast,
-                    (ResizeDirection::East, ResizeDirection::South) => ResizeDirection::SouthEast,
-                    (ResizeDirection::East, _) => ResizeDirection::East,
-                    (_, ResizeDirection::South) => ResizeDirection::South,
-                    (_, ResizeDirection::North) => ResizeDirection::North,
-                    _ => return,
-                };
-
-                if let Err(err) = window.drag_resize_window(direction) {
-                    println!("Error starting window drag-resize: {err}");
-                } else {
-                    println!("Drag-resizing window Window={:?}", window.id());
-                }
-            }
-            Action::ShowWindowMenu => {
-                if let Some(position) = state.cursor_position {
-                    window.show_window_menu(position);
-                }
-            }
-            Action::PrintHelp => self.print_help(),
-            #[cfg(macos_platform)]
-            Action::CycleOptionAsAlt => {
-                let new = match window.option_as_alt() {
-                    OptionAsAlt::None => OptionAsAlt::OnlyLeft,
-                    OptionAsAlt::OnlyLeft => OptionAsAlt::OnlyRight,
-                    OptionAsAlt::OnlyRight => OptionAsAlt::Both,
-                    OptionAsAlt::Both => OptionAsAlt::None,
-                };
-                println!("Setting option as alt {:?}", new);
-                window.set_option_as_alt(new);
-            }
-            #[cfg(macos_platform)]
-            Action::CreateNewTab => {
-                let tab_id = window.tabbing_identifier();
-                if let Err(err) = self.create_window(event_loop, Some(tab_id)) {
-                    eprintln!("Error creating new window: {err}");
-                }
-            }
-        }
-    }
-
-    fn handle_window_event(
-        &mut self,
-        event_loop: &ActiveEventLoop,
-        window_id: WindowId,
-        event: WindowEvent,
-    ) {
-        let state = match self.windows.get_mut(&window_id) {
-            Some(state) => state,
-            None => return,
-        };
-        let window = &state.window;
-
-        match event {
-            // Resize the surface to the new size
-            WindowEvent::Resized(_size) => {
-                #[cfg(not(any(android_platform, ios_platform)))]
-                {
-                    let (width, height) =
-                        match (NonZeroU32::new(_size.width), NonZeroU32::new(_size.height)) {
-                            (Some(width), Some(height)) => (width, height),
-                            _ => return,
-                        };
-                    state
-                        .surface
-                        .resize(width, height)
-                        .expect("failed to resize inner buffer");
-                }
-                window.request_redraw();
-            }
-            WindowEvent::Focused(focused) => {
-                if focused {
-                    println!("Window={window_id:?} fosused");
-                } else {
-                    println!("Window={window_id:?} unfosused");
-                }
-            }
-            WindowEvent::ScaleFactorChanged { scale_factor, .. } => {
-                println!("Window={window_id:?} changed scale to {scale_factor}");
-            }
-            WindowEvent::ThemeChanged(theme) => {
-                println!("Theme changed to {theme:?}");
-                state.theme = theme;
-                window.request_redraw();
-            }
-            #[cfg(not(any(android_platform, ios_platform)))]
-            WindowEvent::RedrawRequested => {
-                // Draw the window contents.
-
-                if state.occluded {
-                    println!("Skipping drawing occluded window={:?}", window_id);
-                }
-
-                const WHITE: u32 = 0xFFFFFFFF;
-                const DARK_GRAY: u32 = 0xFF181818;
-
-                let color = match state.theme {
-                    Theme::Light => WHITE,
-                    Theme::Dark => DARK_GRAY,
-                };
-
-                let mut buffer = state
-                    .surface
-                    .buffer_mut()
-                    .expect("could not retrieve buffer");
-                buffer.fill(color);
-                window.pre_present_notify();
-                buffer.present().expect("failed presenting to window");
-            }
-            #[cfg(any(android_platform, ios_platform))]
-            WindowEvent::RedrawRequested => {
-                println!("Drawing but without rendering...");
-            }
-            // Change window occlusion state.
-            WindowEvent::Occluded(occluded) => {
-                state.occluded = occluded;
-                if !occluded {
-                    window.request_redraw();
-                }
-            }
-            WindowEvent::CloseRequested => {
-                println!("Closing Window={window_id:?}");
-                self.windows.remove(&window_id);
-            }
-            WindowEvent::ModifiersChanged(modifiers) => {
-                state.modifiers = modifiers.state();
-                println!("Modifiers changed to {:?}", state.modifiers);
-            }
-            WindowEvent::MouseWheel { delta, .. } => match delta {
-                MouseScrollDelta::LineDelta(x, y) => {
-                    println!("Mouse wheel Line Delta: ({x},{y})");
-                }
-                MouseScrollDelta::PixelDelta(px) => {
-                    println!("Mouse wheel Pixel Delta: ({},{})", px.x, px.y);
-                }
-            },
-            WindowEvent::KeyboardInput {
-                event:
-                    KeyEvent {
-                        // Dispatch actions only on press.
-                        state: ElementState::Pressed,
-                        logical_key,
-                        ..
-                    },
-                is_synthetic: false,
-                ..
-            } => {
-                if let Key::Character(ch) = logical_key.as_ref() {
-                    let mods = state.modifiers;
-                    if let Some(action) = Self::process_key_binding(&ch.to_uppercase(), &mods) {
-                        self.handle_action(event_loop, window_id, action);
-                    }
-                }
-            }
-            WindowEvent::KeyboardInput { .. } => {}
-            WindowEvent::MouseInput {
-                button,
-                state: ElementState::Pressed,
-                ..
-            } => {
-                if let Some(action) = Self::process_mouse_binding(button, &state.modifiers) {
-                    self.handle_action(event_loop, window_id, action);
-                }
-            }
-            WindowEvent::MouseInput { .. } => {}
-            WindowEvent::CursorLeft { .. } => {
-                println!("Cursor left Window={window_id:?}");
-                state.cursor_position = None;
-            }
-            WindowEvent::CursorMoved { position, .. } => {
-                println!("Moved cursor to {position:?}");
-                state.cursor_position = Some(position);
-                if state.ime {
-                    window.set_ime_cursor_area(position, PhysicalSize::new(20, 20));
-                }
-            }
-            WindowEvent::ActivationTokenDone { token: _token, .. } => {
-                #[cfg(any(x11_platform, wayland_platform))]
-                {
-                    startup_notify::set_activation_token_env(_token);
-                    if let Err(err) = self.create_window(event_loop, None) {
-                        eprintln!("Error creating new window: {err}");
-                    }
-                }
-            }
-            WindowEvent::Ime(event) => match event {
-                Ime::Enabled => println!("IME enabled for Window={window_id:?}"),
-                Ime::Preedit(text, caret_pos) => {
-                    println!("Preedit: {}, with caret at {:?}", text, caret_pos);
-                }
-                Ime::Commit(text) => {
-                    println!("Commited: {}", text);
-                }
-                Ime::Disabled => println!("IME disabled for Window={window_id:?}"),
-            },
-            WindowEvent::PinchGesture { delta, .. } => {
-                state.zoom += delta;
-                let zoom = state.zoom;
-                if delta > 0.0 {
-                    println!("Zoomed in {delta:.5} (now: {zoom:.5})");
-                } else {
-                    println!("Zoomed out {delta:.5} (now: {zoom:.5})");
-                }
-            }
-            WindowEvent::RotationGesture { delta, .. } => {
-                state.rotated += delta;
-                let rotated = state.rotated;
-                if delta > 0.0 {
-                    println!("Rotated counterclockwise {delta:.5} (now: {rotated:.5})");
-                } else {
-                    println!("Rotated clockwise {delta:.5} (now: {rotated:.5})");
-                }
-            }
-            WindowEvent::DoubleTapGesture { .. } => {
-                println!("Smart zoom");
-            }
-            WindowEvent::TouchpadPressure { .. }
-            | WindowEvent::HoveredFileCancelled
-            | WindowEvent::CursorEntered { .. }
-            | WindowEvent::AxisMotion { .. }
-            | WindowEvent::DroppedFile(_)
-            | WindowEvent::HoveredFile(_)
-            | WindowEvent::Destroyed
-            | WindowEvent::Touch(_)
-            | WindowEvent::Moved(_) => (),
-        }
-    }
-
-    fn handle_device_event(&mut self, _: &ActiveEventLoop, _: DeviceId, event: DeviceEvent) {
-        println!("Device event: {event:?}");
-    }
-
-    /// Process the key binding.
-    fn process_key_binding(key: &str, mods: &ModifiersState) -> Option<Action> {
-        KEY_BINDINGS.iter().find_map(|binding| {
-            binding
-                .is_triggered_by(&key, mods)
-                .then_some(binding.action)
-        })
-    }
-
-    /// Process mouse binding.
-    fn process_mouse_binding(button: MouseButton, mods: &ModifiersState) -> Option<Action> {
-        MOUSE_BINDINGS.iter().find_map(|binding| {
-            binding
-                .is_triggered_by(&button, mods)
-                .then_some(binding.action)
-        })
-    }
-
-    fn print_help(&self) {
-        fn modifiers_to_string(mods: ModifiersState) -> String {
-            let mut mods_line = String::new();
-            // Always add + since it's printed as a part of the bindings.
-            for (modifier, desc) in [
-                (ModifiersState::SUPER, "Super+"),
-                (ModifiersState::ALT, "Alt+"),
-                (ModifiersState::CONTROL, "Ctrl+"),
-                (ModifiersState::SHIFT, "Shift+"),
-            ] {
-                if !mods.contains(modifier) {
-                    continue;
-                }
-
-                mods_line.push_str(desc);
-            }
-            mods_line
-        }
-
-        println!("Keyboard bindings:");
-        for binding in KEY_BINDINGS {
-            println!(
-                "{}{:<10} - {:?} ({})",
-                modifiers_to_string(binding.mods),
-                binding.trigger,
-                binding.action,
-                binding.action.help(),
-            );
-        }
-        println!("Mouse bindings:");
-        for binding in MOUSE_BINDINGS {
-            let button_name = match binding.trigger {
-                MouseButton::Left => "LMB",
-                MouseButton::Right => "RMB",
-                MouseButton::Middle => "MMB",
-                MouseButton::Back => "Back",
-                MouseButton::Forward => "Forward",
-                MouseButton::Other(_) => "",
-            };
-
-            println!(
-                "{}{:<10} - {:?} ({})",
-                modifiers_to_string(binding.mods),
-                button_name,
-                binding.action,
-                binding.action.help(),
-            );
-        }
-    }
-}
-
-/// Extra state on a window used in this example.
-struct WindowState {
-    /// The actual Winit window.
-    window: Window,
-    /// IME input.
-    ime: bool,
-    /// Render surface.
-    ///
-    /// NOTE: This surface must be dropped before the `Window`.
-    #[cfg(not(any(android_platform, ios_platform)))]
-    surface: Surface,
-    /// The window theme we're drawing with.
-    theme: Theme,
-    /// Cursor position over the window.
-    cursor_position: Option<PhysicalPosition<f64>>,
-    /// Window modifiers state.
-    modifiers: ModifiersState,
-    /// Occlusion state of the window.
-    occluded: bool,
-    /// Current cursor grab mode.
-    cursor_grab: CursorGrabMode,
-    /// The amount of zoom into window.
-    zoom: f64,
-    /// The amount of rotation of the window.
-    rotated: f32,
-    // Cursor states.
-    named_idx: usize,
-    custom_idx: usize,
-    cursor_hidden: bool,
-}
-
-struct Binding<T: Eq> {
-    trigger: T,
-    mods: ModifiersState,
-    action: Action,
-}
-
-impl<T: Eq> Binding<T> {
-    const fn new(trigger: T, mods: ModifiersState, action: Action) -> Self {
-        Self {
-            trigger,
-            mods,
-            action,
-        }
-    }
-
-    fn is_triggered_by(&self, trigger: &T, mods: &ModifiersState) -> bool {
-        &self.trigger == trigger && &self.mods == mods
-    }
-}
-
-/// Helper enum describing the different kinds of actions this example can do.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-enum Action {
-    CloseWindow,
-    ToggleCursorVisibility,
-    CreateNewWindow,
-    ToggleResizeIncrements,
-    ToggleImeInput,
-    ToggleDecorations,
-    ToggleResizable,
-    ToggleFullscreen,
-    ToggleMaximize,
-    Minimize,
-    NextCursor,
-    NextCustomCursor,
-    CycleCursorGrab,
-    PrintHelp,
-    DragWindow,
-    DragResizeWindow,
-    ShowWindowMenu,
-    #[cfg(macos_platform)]
-    CycleOptionAsAlt,
-    #[cfg(macos_platform)]
-    CreateNewTab,
-}
-
-impl Action {
-    fn help(&self) -> &'static str {
-        match self {
-            Action::CloseWindow => "Close window",
-            Action::ToggleCursorVisibility => "Hide cursor",
-            Action::CreateNewWindow => "Create new window",
-            Action::ToggleImeInput => "Toggle IME input",
-            Action::ToggleDecorations => "Toggle decorations",
-            Action::ToggleResizable => "Toggle window resizable state",
-            Action::ToggleFullscreen => "Toggle fullscreen",
-            Action::ToggleMaximize => "Maximize",
-            Action::Minimize => "Minimize",
-            Action::ToggleResizeIncrements => "Use resize increments when resizing window",
-            Action::NextCursor => "Advance the cursor to the next value",
-            Action::NextCustomCursor => "Advance custom cursor to the next value",
-            Action::CycleCursorGrab => "Cycle through cursor grab mode",
-            Action::PrintHelp => "Print help",
-            Action::DragWindow => "Start window drag",
-            Action::DragResizeWindow => "Start window drag-resize",
-            Action::ShowWindowMenu => "Show window menu",
-            #[cfg(macos_platform)]
-            Action::CycleOptionAsAlt => "Cycle option as alt mode",
-            #[cfg(macos_platform)]
-            Action::CreateNewTab => "Create new tab",
-        }
-    }
-}
-
-const KEY_BINDINGS: &[Binding<&'static str>] = &[
-    Binding::new("Q", ModifiersState::CONTROL, Action::CloseWindow),
-    Binding::new("H", ModifiersState::CONTROL, Action::PrintHelp),
-    Binding::new("F", ModifiersState::CONTROL, Action::ToggleFullscreen),
-    Binding::new("D", ModifiersState::CONTROL, Action::ToggleDecorations),
-    Binding::new("I", ModifiersState::CONTROL, Action::ToggleImeInput),
-    Binding::new("L", ModifiersState::CONTROL, Action::CycleCursorGrab),
-    Binding::new("P", ModifiersState::CONTROL, Action::ToggleResizeIncrements),
-    Binding::new("R", ModifiersState::CONTROL, Action::ToggleResizable),
-    // M.
-    Binding::new("M", ModifiersState::CONTROL, Action::ToggleMaximize),
-    Binding::new("M", ModifiersState::ALT, Action::Minimize),
-    // N.
-    Binding::new("N", ModifiersState::CONTROL, Action::CreateNewWindow),
-    // C.
-    Binding::new("C", ModifiersState::CONTROL, Action::NextCursor),
-    Binding::new("C", ModifiersState::ALT, Action::NextCustomCursor),
-    Binding::new("Z", ModifiersState::CONTROL, Action::ToggleCursorVisibility),
-    #[cfg(macos_platform)]
-    Binding::new("T", ModifiersState::SUPER, Action::CreateNewTab),
-    #[cfg(macos_platform)]
-    Binding::new("O", ModifiersState::CONTROL, Action::CycleOptionAsAlt),
-];
-
-const MOUSE_BINDINGS: &[Binding<MouseButton>] = &[
-    Binding::new(
-        MouseButton::Left,
-        ModifiersState::ALT,
-        Action::DragResizeWindow,
-    ),
-    Binding::new(
-        MouseButton::Left,
-        ModifiersState::CONTROL,
-        Action::DragWindow,
-    ),
-    Binding::new(
-        MouseButton::Right,
-        ModifiersState::CONTROL,
-        Action::ShowWindowMenu,
-    ),
-];

examples/fullscreen.rs

@@ -0,0 +1,163 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::dpi::LogicalSize;
+use winit::event::{ElementState, Event, KeyEvent, WindowEvent};
+use winit::event_loop::EventLoop;
+use winit::keyboard::{Key, NamedKey};
+use winit::window::{Fullscreen, Window};
+
+#[cfg(target_os = "macos")]
+use winit::platform::macos::WindowExtMacOS;
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let mut decorations = true;
+    let mut minimized = false;
+    let mut with_min_size = false;
+    let mut with_max_size = false;
+
+    let window = Window::builder()
+        .with_title("Hello world!")
+        .build(&event_loop)
+        .unwrap();
+
+    let mut monitor_index = 0;
+    let mut monitor = event_loop
+        .available_monitors()
+        .next()
+        .expect("no monitor found!");
+    println!("Monitor: {:?}", monitor.name());
+
+    let mut mode_index = 0;
+    let mut mode = monitor.video_modes().next().expect("no mode found");
+    println!("Mode: {mode}");
+
+    println!("Keys:");
+    println!("- Esc\tExit");
+    println!("- F\tToggle exclusive fullscreen mode");
+    println!("- B\tToggle borderless mode");
+    #[cfg(target_os = "macos")]
+    println!("- C\tToggle simple fullscreen mode");
+    println!("- S\tNext screen");
+    println!("- M\tNext mode for this screen");
+    println!("- D\tToggle window decorations");
+    println!("- X\tMaximize window");
+    println!("- Z\tMinimize window");
+    println!("- I\tToggle mIn size limit");
+    println!("- A\tToggle mAx size limit");
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            logical_key: key,
+                            state: ElementState::Pressed,
+                            ..
+                        },
+                    ..
+                } => match key {
+                    Key::Named(NamedKey::Escape) => elwt.exit(),
+                    // WARNING: Consider using `key_without_modifers()` if available on your platform.
+                    // See the `key_binding` example
+                    Key::Character(ch) => match ch.to_lowercase().as_str() {
+                        "f" | "b" if window.fullscreen().is_some() => {
+                            window.set_fullscreen(None);
+                        }
+                        "f" => {
+                            let fullscreen = Some(Fullscreen::Exclusive(mode.clone()));
+                            println!("Setting mode: {fullscreen:?}");
+                            window.set_fullscreen(fullscreen);
+                        }
+                        "b" => {
+                            let fullscreen = Some(Fullscreen::Borderless(Some(monitor.clone())));
+                            println!("Setting mode: {fullscreen:?}");
+                            window.set_fullscreen(fullscreen);
+                        }
+                        #[cfg(target_os = "macos")]
+                        "c" => {
+                            window.set_simple_fullscreen(!window.simple_fullscreen());
+                        }
+                        "s" => {
+                            monitor_index += 1;
+                            if let Some(mon) = elwt.available_monitors().nth(monitor_index) {
+                                monitor = mon;
+                            } else {
+                                monitor_index = 0;
+                                monitor =
+                                    elwt.available_monitors().next().expect("no monitor found!");
+                            }
+                            println!("Monitor: {:?}", monitor.name());
+
+                            mode_index = 0;
+                            mode = monitor.video_modes().next().expect("no mode found");
+                            println!("Mode: {mode}");
+                        }
+                        "m" => {
+                            mode_index += 1;
+                            if let Some(m) = monitor.video_modes().nth(mode_index) {
+                                mode = m;
+                            } else {
+                                mode_index = 0;
+                                mode = monitor.video_modes().next().expect("no mode found");
+                            }
+                            println!("Mode: {mode}");
+                        }
+                        "d" => {
+                            decorations = !decorations;
+                            window.set_decorations(decorations);
+                        }
+                        "x" => {
+                            let is_maximized = window.is_maximized();
+                            window.set_maximized(!is_maximized);
+                        }
+                        "z" => {
+                            minimized = !minimized;
+                            window.set_minimized(minimized);
+                        }
+                        "i" => {
+                            with_min_size = !with_min_size;
+                            let min_size = if with_min_size {
+                                Some(LogicalSize::new(100, 100))
+                            } else {
+                                None
+                            };
+                            window.set_min_inner_size(min_size);
+                            eprintln!(
+                                "Min: {with_min_size}: {min_size:?} => {:?}",
+                                window.inner_size()
+                            );
+                        }
+                        "a" => {
+                            with_max_size = !with_max_size;
+                            let max_size = if with_max_size {
+                                Some(LogicalSize::new(200, 200))
+                            } else {
+                                None
+                            };
+                            window.set_max_inner_size(max_size);
+                            eprintln!(
+                                "Max: {with_max_size}: {max_size:?} => {:?}",
+                                window.inner_size()
+                            );
+                        }
+                        _ => (),
+                    },
+                    _ => (),
+                },
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/handling_close.rs

@@ -0,0 +1,86 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::Key,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("Your faithful window")
+        .build(&event_loop)
+        .unwrap();
+
+    let mut close_requested = false;
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => {
+                    // `CloseRequested` is sent when the close button on the window is pressed (or
+                    // through whatever other mechanisms the window manager provides for closing a
+                    // window). If you don't handle this event, the close button won't actually do
+                    // anything.
+
+                    // A common thing to do here is prompt the user if they have unsaved work.
+                    // Creating a proper dialog box for that is far beyond the scope of this
+                    // example, so here we'll just respond to the Y and N keys.
+                    println!("Are you ready to bid your window farewell? [Y/N]");
+                    close_requested = true;
+
+                    // In applications where you can safely close the window without further
+                    // action from the user, this is generally where you'd handle cleanup before
+                    // closing the window. How to close the window is detailed in the handler for
+                    // the Y key.
+                }
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            logical_key: key,
+                            state: ElementState::Released,
+                            ..
+                        },
+                    ..
+                } => {
+                    // WARNING: Consider using `key_without_modifers()` if available on your platform.
+                    // See the `key_binding` example
+                    match key.as_ref() {
+                        Key::Character("y") => {
+                            if close_requested {
+                                // This is where you'll want to do any cleanup you need.
+                                println!("Buh-bye!");
+
+                                // For a single-window application like this, you'd normally just
+                                // break out of the event loop here. If you wanted to keep running the
+                                // event loop (i.e. if it's a multi-window application), you need to
+                                // drop the window. That closes it, and results in `Destroyed` being
+                                // sent.
+                                elwt.exit();
+                            }
+                        }
+                        Key::Character("n") => {
+                            if close_requested {
+                                println!("Your window will continue to stay by your side.");
+                                close_requested = false;
+                            }
+                        }
+                        _ => (),
+                    }
+                }
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/ime.rs

@@ -0,0 +1,94 @@
+#![allow(clippy::single_match)]
+
+use log::LevelFilter;
+use simple_logger::SimpleLogger;
+use winit::{
+    dpi::{PhysicalPosition, PhysicalSize},
+    event::{ElementState, Event, Ime, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::NamedKey,
+    window::{ImePurpose, Window},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new()
+        .with_level(LevelFilter::Trace)
+        .init()
+        .unwrap();
+
+    println!("IME position will system default");
+    println!("Click to set IME position to cursor's");
+    println!("Press F2 to toggle IME. See the documentation of `set_ime_allowed` for more info");
+    println!("Press F3 to cycle through IME purposes.");
+
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_inner_size(winit::dpi::LogicalSize::new(256f64, 128f64))
+        .build(&event_loop)
+        .unwrap();
+
+    let mut ime_purpose = ImePurpose::Normal;
+    let mut ime_allowed = true;
+    window.set_ime_allowed(ime_allowed);
+
+    let mut may_show_ime = false;
+    let mut cursor_position = PhysicalPosition::new(0.0, 0.0);
+    let mut ime_pos = PhysicalPosition::new(0.0, 0.0);
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::CursorMoved { position, .. } => {
+                    cursor_position = position;
+                }
+                WindowEvent::MouseInput {
+                    state: ElementState::Released,
+                    ..
+                } => {
+                    println!(
+                        "Setting ime position to {}, {}",
+                        cursor_position.x, cursor_position.y
+                    );
+                    ime_pos = cursor_position;
+                    if may_show_ime {
+                        window.set_ime_cursor_area(ime_pos, PhysicalSize::new(10, 10));
+                    }
+                }
+                WindowEvent::Ime(event) => {
+                    println!("{event:?}");
+                    may_show_ime = event != Ime::Disabled;
+                    if may_show_ime {
+                        window.set_ime_cursor_area(ime_pos, PhysicalSize::new(10, 10));
+                    }
+                }
+                WindowEvent::KeyboardInput { event, .. } => {
+                    println!("key: {event:?}");
+
+                    if event.state == ElementState::Pressed && event.logical_key == NamedKey::F2 {
+                        ime_allowed = !ime_allowed;
+                        window.set_ime_allowed(ime_allowed);
+                        println!("\nIME allowed: {ime_allowed}\n");
+                    }
+                    if event.state == ElementState::Pressed && event.logical_key == NamedKey::F3 {
+                        ime_purpose = match ime_purpose {
+                            ImePurpose::Normal => ImePurpose::Password,
+                            ImePurpose::Password => ImePurpose::Terminal,
+                            _ => ImePurpose::Normal,
+                        };
+                        window.set_ime_purpose(ime_purpose);
+                        println!("\nIME purpose: {ime_purpose:?}\n");
+                    }
+                }
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/key_binding.rs

@@ -0,0 +1,62 @@
+#![allow(clippy::single_match)]
+
+#[cfg(any(target_os = "macos", target_os = "windows", target_os = "linux"))]
+use winit::{
+    dpi::LogicalSize,
+    event::{ElementState, Event, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::{Key, ModifiersState},
+    // WARNING: This is not available on all platforms (for example on the web).
+    platform::modifier_supplement::KeyEventExtModifierSupplement,
+    window::Window,
+};
+
+#[cfg(not(any(target_os = "macos", target_os = "windows", target_os = "linux")))]
+fn main() {
+    println!("This example is not supported on this platform");
+}
+
+#[cfg(any(target_os = "macos", target_os = "windows", target_os = "linux"))]
+fn main() -> Result<(), impl std::error::Error> {
+    #[path = "util/fill.rs"]
+    mod fill;
+
+    simple_logger::SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_inner_size(LogicalSize::new(400.0, 200.0))
+        .build(&event_loop)
+        .unwrap();
+
+    let mut modifiers = ModifiersState::default();
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::ModifiersChanged(new) => {
+                    modifiers = new.state();
+                }
+                WindowEvent::KeyboardInput { event, .. } => {
+                    if event.state == ElementState::Pressed && !event.repeat {
+                        match event.key_without_modifiers().as_ref() {
+                            Key::Character("1") => {
+                                if modifiers.shift_key() {
+                                    println!("Shift + 1 | logical_key: {:?}", event.logical_key);
+                                } else {
+                                    println!("1");
+                                }
+                            }
+                            _ => (),
+                        }
+                    }
+                }
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        };
+    })
+}

examples/monitor_list.rs

@@ -0,0 +1,58 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::dpi::{PhysicalPosition, PhysicalSize};
+use winit::monitor::MonitorHandle;
+use winit::{event_loop::EventLoop, window::Window};
+
+fn main() {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+    let window = Window::builder().build(&event_loop).unwrap();
+
+    if let Some(mon) = window.primary_monitor() {
+        print_info("Primary output", mon);
+    }
+
+    for mon in window.available_monitors() {
+        if Some(&mon) == window.primary_monitor().as_ref() {
+            continue;
+        }
+
+        println!();
+        print_info("Output", mon);
+    }
+}
+
+fn print_info(intro: &str, monitor: MonitorHandle) {
+    if let Some(name) = monitor.name() {
+        println!("{intro}: {name}");
+    } else {
+        println!("{intro}: [no name]");
+    }
+
+    let PhysicalSize { width, height } = monitor.size();
+    print!("  Current mode: {width}x{height}");
+    if let Some(m_hz) = monitor.refresh_rate_millihertz() {
+        println!(" @ {}.{} Hz", m_hz / 1000, m_hz % 1000);
+    } else {
+        println!();
+    }
+
+    let PhysicalPosition { x, y } = monitor.position();
+    println!("  Position: {x},{y}");
+
+    println!("  Scale factor: {}", monitor.scale_factor());
+
+    println!("  Available modes (width x height x bit-depth):");
+    for mode in monitor.video_modes() {
+        let PhysicalSize { width, height } = mode.size();
+        let bits = mode.bit_depth();
+        let m_hz = mode.refresh_rate_millihertz();
+        println!(
+            "    {width}x{height}x{bits} @ {}.{} Hz",
+            m_hz / 1000,
+            m_hz % 1000
+        );
+    }
+}

examples/monitors.rs

@@ -1,62 +0,0 @@
-use std::error::Error;
-use winit::{
-    event::{Event, StartCause},
-    event_loop::{ActiveEventLoop, EventLoop},
-};
-
-fn main() -> Result<(), Box<dyn Error>> {
-    let event_loop = EventLoop::new()?;
-
-    Ok(event_loop.run(|event, event_loop| match event {
-        Event::NewEvents(StartCause::Init) => {
-            dump_monitors(event_loop);
-            event_loop.exit()
-        }
-        _ => {}
-    })?)
-}
-
-fn dump_monitors(event_loop: &ActiveEventLoop) {
-    println!("Monitors information");
-    let primary_monitor = event_loop.primary_monitor();
-    for monitor in event_loop.available_monitors() {
-        let intro = if primary_monitor.as_ref() == Some(&monitor) {
-            "Primary monitor"
-        } else {
-            "Monitor"
-        };
-
-        if let Some(name) = monitor.name() {
-            println!("{intro}: {name}");
-        } else {
-            println!("{intro}: [no name]");
-        }
-
-        let size = monitor.size();
-        print!("  Current mode: {}x{}", size.width, size.height);
-        if let Some(m_hz) = monitor.refresh_rate_millihertz() {
-            println!(" @ {}.{} Hz", m_hz / 1000, m_hz % 1000);
-        } else {
-            println!();
-        }
-
-        let position = monitor.position();
-        println!("  Position: {}, {}", position.x, position.y);
-
-        println!("  Scale factor: {}", monitor.scale_factor());
-
-        println!("  Available modes (width x height x bit-depth):");
-        for mode in monitor.video_modes() {
-            let size = mode.size();
-            let m_hz = mode.refresh_rate_millihertz();
-            println!(
-                "    {:04}x{:04}x{:02} @ {:>3}.{} Hz",
-                size.width,
-                size.height,
-                mode.bit_depth(),
-                m_hz / 1000,
-                m_hz % 1000
-            );
-        }
-    }
-}

examples/mouse_wheel.rs

@@ -0,0 +1,65 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("Mouse Wheel events")
+        .build(&event_loop)
+        .unwrap();
+
+    println!(
+        r"
+When using so called 'natural scrolling' (scrolling that acts like on a touch screen), this is what to expect:
+
+Moving your finger downwards on a scroll wheel should make the window move down, and you should see a positive Y scroll value.
+
+When moving fingers on a trackpad down and to the right, you should see positive X and Y deltas, and the window should move down and to the right.
+
+With reverse scrolling, you should see the inverse behavior.
+
+In both cases the example window should move like the content of a scroll area in any other application.
+
+In other words, the deltas indicate the direction in which to move the content (in this case the window)."
+    );
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::MouseWheel { delta, .. } => match delta {
+                    winit::event::MouseScrollDelta::LineDelta(x, y) => {
+                        println!("mouse wheel Line Delta: ({x},{y})");
+                        let pixels_per_line = 120.0;
+                        let mut pos = window.outer_position().unwrap();
+                        pos.x += (x * pixels_per_line) as i32;
+                        pos.y += (y * pixels_per_line) as i32;
+                        window.set_outer_position(pos)
+                    }
+                    winit::event::MouseScrollDelta::PixelDelta(p) => {
+                        println!("mouse wheel Pixel Delta: ({},{})", p.x, p.y);
+                        let mut pos = window.outer_position().unwrap();
+                        pos.x += p.x as i32;
+                        pos.y += p.y as i32;
+                        window.set_outer_position(pos)
+                    }
+                },
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/multithreaded.rs

@@ -0,0 +1,211 @@
+#![allow(clippy::single_match)]
+
+#[cfg(not(web_platform))]
+fn main() -> Result<(), impl std::error::Error> {
+    use std::{collections::HashMap, sync::mpsc, thread, time::Duration};
+
+    use simple_logger::SimpleLogger;
+    use winit::{
+        dpi::{PhysicalPosition, PhysicalSize, Position, Size},
+        event::{ElementState, Event, KeyEvent, WindowEvent},
+        event_loop::EventLoop,
+        keyboard::{Key, ModifiersState, NamedKey},
+        window::{CursorGrabMode, CursorIcon, Fullscreen, Window, WindowLevel},
+    };
+
+    const WINDOW_COUNT: usize = 3;
+    const WINDOW_SIZE: PhysicalSize<u32> = PhysicalSize::new(600, 400);
+
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+    let mut window_senders = HashMap::with_capacity(WINDOW_COUNT);
+    for _ in 0..WINDOW_COUNT {
+        let window = Window::builder()
+            .with_inner_size(WINDOW_SIZE)
+            .build(&event_loop)
+            .unwrap();
+
+        let mut video_modes: Vec<_> = window.current_monitor().unwrap().video_modes().collect();
+        let mut video_mode_id = 0usize;
+
+        let (tx, rx) = mpsc::channel();
+        window_senders.insert(window.id(), tx);
+        let mut modifiers = ModifiersState::default();
+        thread::spawn(move || {
+            while let Ok(event) = rx.recv() {
+                match event {
+                    WindowEvent::Moved { .. } => {
+                        // We need to update our chosen video mode if the window
+                        // was moved to an another monitor, so that the window
+                        // appears on this monitor instead when we go fullscreen
+                        let previous_video_mode = video_modes.get(video_mode_id).cloned();
+                        video_modes = window.current_monitor().unwrap().video_modes().collect();
+                        video_mode_id = video_mode_id.min(video_modes.len());
+                        let video_mode = video_modes.get(video_mode_id);
+
+                        // Different monitors may support different video modes,
+                        // and the index we chose previously may now point to a
+                        // completely different video mode, so notify the user
+                        if video_mode != previous_video_mode.as_ref() {
+                            println!(
+                                "Window moved to another monitor, picked video mode: {}",
+                                video_modes.get(video_mode_id).unwrap()
+                            );
+                        }
+                    }
+                    WindowEvent::ModifiersChanged(new) => {
+                        modifiers = new.state();
+                    }
+                    WindowEvent::KeyboardInput {
+                        event:
+                            KeyEvent {
+                                state: ElementState::Released,
+                                logical_key: key,
+                                ..
+                            },
+                        ..
+                    } => {
+                        use NamedKey::{ArrowLeft, ArrowRight};
+                        window.set_title(&format!("{key:?}"));
+                        let state = !modifiers.shift_key();
+                        match key {
+                            // Cycle through video modes
+                            Key::Named(ArrowRight) | Key::Named(ArrowLeft) => {
+                                if key == ArrowLeft {
+                                    video_mode_id = video_mode_id.saturating_sub(1);
+                                } else if key == ArrowRight {
+                                    video_mode_id = (video_modes.len() - 1).min(video_mode_id + 1);
+                                }
+                                println!("Picking video mode: {}", video_modes[video_mode_id]);
+                            }
+                            // WARNING: Consider using `key_without_modifers()` if available on your platform.
+                            // See the `key_binding` example
+                            Key::Character(ch) => match ch.to_lowercase().as_str() {
+                                "1" => window.set_window_level(WindowLevel::AlwaysOnTop),
+                                "2" => window.set_window_level(WindowLevel::AlwaysOnBottom),
+                                "3" => window.set_window_level(WindowLevel::Normal),
+                                "c" => window.set_cursor(match state {
+                                    true => CursorIcon::Progress,
+                                    false => CursorIcon::Default,
+                                }),
+                                "d" => window.set_decorations(!state),
+                                "f" => window.set_fullscreen(match (state, modifiers.alt_key()) {
+                                    (true, false) => Some(Fullscreen::Borderless(None)),
+                                    (true, true) => Some(Fullscreen::Exclusive(
+                                        video_modes[video_mode_id].clone(),
+                                    )),
+                                    (false, _) => None,
+                                }),
+                                ch @ ("g" | "l") => {
+                                    let mode = match (ch, state) {
+                                        ("l", true) => CursorGrabMode::Locked,
+                                        ("g", true) => CursorGrabMode::Confined,
+                                        (_, _) => CursorGrabMode::None,
+                                    };
+                                    if let Err(err) = window.set_cursor_grab(mode) {
+                                        println!("error: {err}");
+                                    }
+                                }
+                                "h" => window.set_cursor_visible(!state),
+                                "i" => {
+                                    println!("Info:");
+                                    println!("-> outer_position : {:?}", window.outer_position());
+                                    println!("-> inner_position : {:?}", window.inner_position());
+                                    println!("-> outer_size     : {:?}", window.outer_size());
+                                    println!("-> inner_size     : {:?}", window.inner_size());
+                                    println!("-> fullscreen     : {:?}", window.fullscreen());
+                                }
+                                "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;
+                                    position
+                                }),
+                                "q" => window.request_redraw(),
+                                "r" => window.set_resizable(state),
+                                "s" => {
+                                    let _ = window.request_inner_size(match state {
+                                        true => PhysicalSize::new(
+                                            WINDOW_SIZE.width + 50,
+                                            WINDOW_SIZE.height + 50,
+                                        ),
+                                        false => WINDOW_SIZE,
+                                    });
+                                }
+                                "k" => window.set_min_inner_size(match state {
+                                    true => Some(PhysicalSize::new(
+                                        WINDOW_SIZE.width - 100,
+                                        WINDOW_SIZE.height - 100,
+                                    )),
+                                    false => None,
+                                }),
+                                "o" => window.set_max_inner_size(match state {
+                                    true => Some(PhysicalSize::new(
+                                        WINDOW_SIZE.width + 100,
+                                        WINDOW_SIZE.height + 100,
+                                    )),
+                                    false => None,
+                                }),
+                                "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()
+                                    }
+                                }
+                                "z" => {
+                                    window.set_visible(false);
+                                    thread::sleep(Duration::from_secs(1));
+                                    window.set_visible(true);
+                                }
+                                _ => (),
+                            },
+                            _ => (),
+                        }
+                    }
+                    _ => (),
+                }
+            }
+        });
+    }
+    event_loop.run(move |event, elwt| {
+        if window_senders.is_empty() {
+            elwt.exit()
+        }
+        match event {
+            Event::WindowEvent { event, window_id } => match event {
+                WindowEvent::CloseRequested
+                | WindowEvent::Destroyed
+                | WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            state: ElementState::Released,
+                            logical_key: Key::Named(NamedKey::Escape),
+                            ..
+                        },
+                    ..
+                } => {
+                    window_senders.remove(&window_id);
+                }
+                _ => {
+                    if let Some(tx) = window_senders.get(&window_id) {
+                        tx.send(event).unwrap();
+                    }
+                }
+            },
+            _ => {}
+        }
+    })
+}
+
+#[cfg(web_platform)]
+fn main() {
+    panic!("Example not supported on Web");
+}

examples/multiwindow.rs

@@ -0,0 +1,64 @@
+#![allow(clippy::single_match)]
+
+use std::collections::HashMap;
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::{Key, NamedKey},
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let mut windows = HashMap::new();
+    for _ in 0..3 {
+        let window = Window::new(&event_loop).unwrap();
+        println!("Opened a new window: {:?}", window.id());
+        windows.insert(window.id(), window);
+    }
+
+    println!("Press N to open a new window.");
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, window_id } = event {
+            match event {
+                WindowEvent::CloseRequested => {
+                    println!("Window {window_id:?} has received the signal to close");
+
+                    // This drops the window, causing it to close.
+                    windows.remove(&window_id);
+
+                    if windows.is_empty() {
+                        elwt.exit();
+                    }
+                }
+                WindowEvent::KeyboardInput {
+                    event,
+                    is_synthetic: false,
+                    ..
+                } if event.state == ElementState::Pressed => match event.logical_key {
+                    Key::Named(NamedKey::Escape) => elwt.exit(),
+                    Key::Character(c) if c == "n" || c == "N" => {
+                        let window = Window::new(elwt).unwrap();
+                        println!("Opened a new window: {:?}", window.id());
+                        windows.insert(window.id(), window);
+                    }
+                    _ => (),
+                },
+                WindowEvent::RedrawRequested => {
+                    if let Some(window) = windows.get(&window_id) {
+                        fill::fill_window(window);
+                    }
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/request_redraw.rs

@@ -0,0 +1,42 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .build(&event_loop)
+        .unwrap();
+
+    event_loop.run(move |event, elwt| {
+        println!("{event:?}");
+
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::MouseInput {
+                    state: ElementState::Released,
+                    ..
+                } => {
+                    window.request_redraw();
+                }
+                WindowEvent::RedrawRequested => {
+                    println!("\nredrawing!\n");
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/request_redraw_threaded.rs

@@ -0,0 +1,59 @@
+#![allow(clippy::single_match)]
+
+#[cfg(not(web_platform))]
+fn main() -> Result<(), impl std::error::Error> {
+    use std::{sync::Arc, thread, time};
+
+    use simple_logger::SimpleLogger;
+    use winit::{
+        event::{Event, WindowEvent},
+        event_loop::EventLoop,
+        window::Window,
+    };
+
+    #[path = "util/fill.rs"]
+    mod fill;
+
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = {
+        let window = Window::builder()
+            .with_title("A fantastic window!")
+            .build(&event_loop)
+            .unwrap();
+        Arc::new(window)
+    };
+
+    thread::spawn({
+        let window = window.clone();
+        move || loop {
+            thread::sleep(time::Duration::from_secs(1));
+            window.request_redraw();
+        }
+    });
+
+    event_loop.run(move |event, elwt| {
+        println!("{event:?}");
+
+        match event {
+            Event::WindowEvent {
+                event: WindowEvent::CloseRequested,
+                ..
+            } => elwt.exit(),
+            Event::WindowEvent {
+                event: WindowEvent::RedrawRequested,
+                ..
+            } => {
+                println!("\nredrawing!\n");
+                fill::fill_window(&window);
+            }
+            _ => (),
+        }
+    })
+}
+
+#[cfg(web_platform)]
+fn main() {
+    unimplemented!() // `Window` can't be sent between threads
+}

examples/resizable.rs

@@ -0,0 +1,54 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    dpi::LogicalSize,
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::{KeyCode, PhysicalKey},
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let mut resizable = false;
+
+    let window = Window::builder()
+        .with_title("Hit space to toggle resizability.")
+        .with_inner_size(LogicalSize::new(600.0, 300.0))
+        .with_min_inner_size(LogicalSize::new(400.0, 200.0))
+        .with_max_inner_size(LogicalSize::new(800.0, 400.0))
+        .with_resizable(resizable)
+        .build(&event_loop)
+        .unwrap();
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            physical_key: PhysicalKey::Code(KeyCode::Space),
+                            state: ElementState::Released,
+                            ..
+                        },
+                    ..
+                } => {
+                    resizable = !resizable;
+                    println!("Resizable: {resizable}");
+                    window.set_resizable(resizable);
+                }
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        };
+    })
+}

examples/startup_notification.rs

@@ -0,0 +1,115 @@
+//! Demonstrates the use of startup notifications on Linux.
+
+#[cfg(any(x11_platform, wayland_platform))]
+#[path = "./util/fill.rs"]
+mod fill;
+
+#[cfg(any(x11_platform, wayland_platform))]
+mod example {
+    use std::collections::HashMap;
+    use std::rc::Rc;
+
+    use winit::event::{ElementState, Event, KeyEvent, WindowEvent};
+    use winit::event_loop::EventLoop;
+    use winit::platform::startup_notify::{
+        EventLoopExtStartupNotify, WindowBuilderExtStartupNotify, WindowExtStartupNotify,
+    };
+    use winit::window::{Window, WindowId};
+
+    pub(super) fn main() -> Result<(), impl std::error::Error> {
+        // Create the event loop and get the activation token.
+        let event_loop = EventLoop::new().unwrap();
+        let mut current_token = match event_loop.read_token_from_env() {
+            Some(token) => Some(token),
+            None => {
+                println!("No startup notification token found in environment.");
+                None
+            }
+        };
+
+        let mut windows: HashMap<WindowId, Rc<Window>> = HashMap::new();
+        let mut counter = 0;
+        let mut create_first_window = false;
+
+        event_loop.run(move |event, elwt| {
+            match event {
+                Event::Resumed => create_first_window = true,
+
+                Event::WindowEvent { window_id, event } => match event {
+                    WindowEvent::KeyboardInput {
+                        event:
+                            KeyEvent {
+                                logical_key,
+                                state: ElementState::Pressed,
+                                ..
+                            },
+                        ..
+                    } => {
+                        if logical_key == "n" {
+                            if let Some(window) = windows.get(&window_id) {
+                                // Request a new activation token on this window.
+                                // Once we get it we will use it to create a window.
+                                window
+                                    .request_activation_token()
+                                    .expect("Failed to request activation token.");
+                            }
+                        }
+                    }
+
+                    WindowEvent::CloseRequested => {
+                        // Remove the window from the map.
+                        windows.remove(&window_id);
+                        if windows.is_empty() {
+                            elwt.exit();
+                            return;
+                        }
+                    }
+
+                    WindowEvent::ActivationTokenDone { token, .. } => {
+                        current_token = Some(token);
+                    }
+
+                    WindowEvent::RedrawRequested => {
+                        if let Some(window) = windows.get(&window_id) {
+                            super::fill::fill_window(window);
+                        }
+                    }
+
+                    _ => {}
+                },
+                _ => (),
+            }
+
+            // See if we've passed the deadline.
+            if current_token.is_some() || create_first_window {
+                // Create the initial window.
+                let window = {
+                    let mut builder = Window::builder().with_title(format!("Window {}", counter));
+
+                    if let Some(token) = current_token.take() {
+                        println!("Creating a window with token {token:?}");
+                        builder = builder.with_activation_token(token);
+                    }
+
+                    Rc::new(builder.build(elwt).unwrap())
+                };
+
+                // Add the window to the map.
+                windows.insert(window.id(), window.clone());
+
+                counter += 1;
+                create_first_window = false;
+            }
+        })
+    }
+}
+
+#[cfg(any(x11_platform, wayland_platform))]
+fn main() -> Result<(), impl std::error::Error> {
+    example::main()
+}
+
+#[cfg(not(any(x11_platform, wayland_platform)))]
+fn main() {
+    println!("This example is only supported on X11 and Wayland platforms.");
+}

examples/theme.rs

@@ -0,0 +1,68 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::Key,
+    window::{Theme, Window},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .with_theme(Some(Theme::Dark))
+        .build(&event_loop)
+        .unwrap();
+
+    println!("Initial theme: {:?}", window.theme());
+    println!("debugging keys:");
+    println!("  (A) Automatic theme");
+    println!("  (L) Light theme");
+    println!("  (D) Dark theme");
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { window_id, event } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::ThemeChanged(theme) if window_id == window.id() => {
+                    println!("Theme is changed: {theme:?}")
+                }
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            logical_key: key,
+                            state: ElementState::Pressed,
+                            ..
+                        },
+                    ..
+                } => match key.as_ref() {
+                    Key::Character("A" | "a") => {
+                        println!("Theme was: {:?}", window.theme());
+                        window.set_theme(None);
+                    }
+                    Key::Character("L" | "l") => {
+                        println!("Theme was: {:?}", window.theme());
+                        window.set_theme(Some(Theme::Light));
+                    }
+                    Key::Character("D" | "d") => {
+                        println!("Theme was: {:?}", window.theme());
+                        window.set_theme(Some(Theme::Dark));
+                    }
+                    _ => (),
+                },
+                WindowEvent::RedrawRequested => {
+                    println!("\nredrawing!\n");
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/timer.rs

@@ -0,0 +1,54 @@
+#![allow(clippy::single_match)]
+
+use std::time::Duration;
+#[cfg(not(web_platform))]
+use std::time::Instant;
+#[cfg(web_platform)]
+use web_time::Instant;
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, StartCause, WindowEvent},
+    event_loop::{ControlFlow, EventLoop},
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .build(&event_loop)
+        .unwrap();
+
+    let timer_length = Duration::new(1, 0);
+
+    event_loop.run(move |event, elwt| {
+        println!("{event:?}");
+
+        match event {
+            Event::NewEvents(StartCause::Init) => {
+                elwt.set_control_flow(ControlFlow::WaitUntil(Instant::now() + timer_length));
+            }
+            Event::NewEvents(StartCause::ResumeTimeReached { .. }) => {
+                elwt.set_control_flow(ControlFlow::WaitUntil(Instant::now() + timer_length));
+                println!("\nTimer\n");
+            }
+            Event::WindowEvent {
+                event: WindowEvent::CloseRequested,
+                ..
+            } => elwt.exit(),
+            Event::WindowEvent {
+                event: WindowEvent::RedrawRequested,
+                ..
+            } => {
+                fill::fill_window(&window);
+            }
+            _ => (),
+        }
+    })
+}

examples/touch_gestures.rs

@@ -0,0 +1,62 @@
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("Touchpad gestures")
+        .build(&event_loop)
+        .unwrap();
+    #[cfg(target_os = "ios")]
+    {
+        use winit::platform::ios::WindowExtIOS;
+        window.recognize_doubletap_gesture(true);
+        window.recognize_pinch_gesture(true);
+        window.recognize_rotation_gesture(true);
+    }
+
+    println!("Only supported on macOS/iOS at the moment.");
+
+    let mut zoom = 0.0;
+    let mut rotated = 0.0;
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::PinchGesture { delta, .. } => {
+                    zoom += delta;
+                    if delta > 0.0 {
+                        println!("Zoomed in {delta:.5} (now: {zoom:.5})");
+                    } else {
+                        println!("Zoomed out {delta:.5} (now: {zoom:.5})");
+                    }
+                }
+                WindowEvent::DoubleTapGesture { .. } => {
+                    println!("Smart zoom");
+                }
+                WindowEvent::RotationGesture { delta, .. } => {
+                    rotated += delta;
+                    if delta > 0.0 {
+                        println!("Rotated counterclockwise {delta:.5} (now: {rotated:.5})");
+                    } else {
+                        println!("Rotated clockwise {delta:.5} (now: {rotated:.5})");
+                    }
+                }
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/transparent.rs

@@ -0,0 +1,38 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_decorations(false)
+        .with_transparent(true)
+        .build(&event_loop)
+        .unwrap();
+
+    window.set_title("A fantastic window!");
+
+    event_loop.run(move |event, elwt| {
+        println!("{event:?}");
+
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/util/fill.rs

@@ -28,7 +28,7 @@ mod platform {
         // ManuallyDrop to prevent destructors from running.
         //
         // A static, thread-local map of graphics contexts to open windows.
-        static GC: ManuallyDrop<RefCell<Option<GraphicsContext>>> = const { ManuallyDrop::new(RefCell::new(None)) };
+        static GC: ManuallyDrop<RefCell<Option<GraphicsContext>>> = ManuallyDrop::new(RefCell::new(None));
     }
 
     /// The graphics context used to draw to a window.

examples/video_modes.rs

@@ -0,0 +1,22 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::event_loop::EventLoop;
+
+fn main() {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+    let monitor = match event_loop.primary_monitor() {
+        Some(monitor) => monitor,
+        None => {
+            println!("No primary monitor detected.");
+            return;
+        }
+    };
+
+    println!("Listing available video modes:");
+
+    for mode in monitor.video_modes() {
+        println!("{mode}");
+    }
+}

examples/web.rs

@@ -0,0 +1,147 @@
+#![allow(clippy::disallowed_methods, clippy::single_match)]
+
+use winit::{
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::Key,
+    window::{Fullscreen, Window},
+};
+
+pub fn main() -> Result<(), impl std::error::Error> {
+    let event_loop = EventLoop::new().unwrap();
+
+    let builder = Window::builder().with_title("A fantastic window!");
+    #[cfg(wasm_platform)]
+    let builder = {
+        use winit::platform::web::WindowBuilderExtWebSys;
+        builder.with_append(true)
+    };
+    let window = builder.build(&event_loop).unwrap();
+
+    #[cfg(web_platform)]
+    let log_list = wasm::insert_canvas_and_create_log_list(&window);
+
+    event_loop.run(move |event, elwt| {
+        #[cfg(web_platform)]
+        wasm::log_event(&log_list, &event);
+
+        match event {
+            Event::WindowEvent {
+                event: WindowEvent::CloseRequested,
+                window_id,
+            } if window_id == window.id() => elwt.exit(),
+            Event::AboutToWait => {
+                window.request_redraw();
+            }
+            Event::WindowEvent {
+                window_id,
+                event:
+                    WindowEvent::KeyboardInput {
+                        event:
+                            KeyEvent {
+                                logical_key: Key::Character(c),
+                                state: ElementState::Released,
+                                ..
+                            },
+                        ..
+                    },
+            } if window_id == window.id() && c == "f" => {
+                if window.fullscreen().is_some() {
+                    window.set_fullscreen(None);
+                } else {
+                    window.set_fullscreen(Some(Fullscreen::Borderless(None)));
+                }
+            }
+            _ => (),
+        }
+    })
+}
+
+#[cfg(web_platform)]
+mod wasm {
+    use std::num::NonZeroU32;
+
+    use softbuffer::{Surface, SurfaceExtWeb};
+    use wasm_bindgen::prelude::*;
+    use winit::{
+        event::{Event, WindowEvent},
+        window::Window,
+    };
+
+    #[wasm_bindgen(start)]
+    pub fn run() {
+        console_log::init_with_level(log::Level::Debug).expect("error initializing logger");
+
+        #[allow(clippy::main_recursion)]
+        let _ = super::main();
+    }
+
+    pub fn insert_canvas_and_create_log_list(window: &Window) -> web_sys::Element {
+        use winit::platform::web::WindowExtWebSys;
+
+        let canvas = window.canvas().unwrap();
+        let mut surface = Surface::from_canvas(canvas.clone()).unwrap();
+        surface
+            .resize(
+                NonZeroU32::new(canvas.width()).unwrap(),
+                NonZeroU32::new(canvas.height()).unwrap(),
+            )
+            .unwrap();
+        let mut buffer = surface.buffer_mut().unwrap();
+        buffer.fill(0xFFF0000);
+        buffer.present().unwrap();
+
+        let window = web_sys::window().unwrap();
+        let document = window.document().unwrap();
+        let body = document.body().unwrap();
+
+        let style = &canvas.style();
+        style.set_property("margin", "50px").unwrap();
+        // Use to test interactions with border and padding.
+        //style.set_property("border", "50px solid black").unwrap();
+        //style.set_property("padding", "50px").unwrap();
+
+        let log_header = document.create_element("h2").unwrap();
+        log_header.set_text_content(Some("Event Log"));
+        body.append_child(&log_header).unwrap();
+
+        let log_list = document.create_element("ul").unwrap();
+        body.append_child(&log_list).unwrap();
+        log_list
+    }
+
+    pub fn log_event(log_list: &web_sys::Element, event: &Event<()>) {
+        log::debug!("{:?}", event);
+
+        // Getting access to browser logs requires a lot of setup on mobile devices.
+        // So we implement this basic logging system into the page to give developers an easy alternative.
+        // As a bonus its also kind of handy on desktop.
+        let event = match event {
+            Event::WindowEvent {
+                event: WindowEvent::RedrawRequested,
+                ..
+            } => None,
+            Event::WindowEvent { event, .. } => Some(format!("{event:?}")),
+            Event::Resumed | Event::Suspended => Some(format!("{event:?}")),
+            _ => None,
+        };
+        if let Some(event) = event {
+            let window = web_sys::window().unwrap();
+            let document = window.document().unwrap();
+            let log = document.create_element("li").unwrap();
+
+            let date = js_sys::Date::new_0();
+            log.set_text_content(Some(&format!(
+                "{:02}:{:02}:{:02}.{:03}: {event}",
+                date.get_hours(),
+                date.get_minutes(),
+                date.get_seconds(),
+                date.get_milliseconds(),
+            )));
+
+            log_list
+                .insert_before(&log, log_list.first_child().as_ref())
+                .unwrap();
+        }
+    }
+}

examples/web_aspect_ratio.rs

@@ -0,0 +1,102 @@
+#![allow(clippy::disallowed_methods)]
+
+pub fn main() {
+    println!("This example must be run with cargo run-wasm --example web_aspect_ratio")
+}
+
+#[cfg(web_platform)]
+mod wasm {
+    use wasm_bindgen::prelude::*;
+    use wasm_bindgen::JsCast;
+    use web_sys::HtmlCanvasElement;
+    use winit::{
+        dpi::PhysicalSize,
+        event::{Event, WindowEvent},
+        event_loop::EventLoop,
+        platform::web::WindowBuilderExtWebSys,
+        window::Window,
+    };
+
+    const EXPLANATION: &str = "
+This example draws a circle in the middle of a 4/1 aspect ratio canvas which acts as a useful demonstration of winit's resize handling on web.
+Even when the browser window is resized or aspect-ratio of the canvas changed the circle should always:
+* Fill the entire width or height of the canvas (whichever is smaller) without exceeding it.
+* Be perfectly round
+* Not be blurry or pixelated (there is no antialiasing so you may still see jagged edges depending on the DPI of your monitor)
+
+Currently winit does not handle resizes on web so the circle is rendered incorrectly.
+This example demonstrates the desired future functionality which will possibly be provided by https://github.com/rust-windowing/winit/pull/2074
+";
+
+    #[wasm_bindgen(start)]
+    pub fn run() {
+        console_log::init_with_level(log::Level::Debug).expect("error initializing logger");
+        let event_loop = EventLoop::new().unwrap();
+
+        let window = Window::builder()
+            .with_title("A fantastic window!")
+            // When running in a non-wasm environment this would set the window size to 100x100.
+            // However in this example it just sets a default initial size of 100x100 that is immediately overwritten due to the layout + styling of the page.
+            .with_inner_size(PhysicalSize::new(100, 100))
+            .with_append(true)
+            .build(&event_loop)
+            .unwrap();
+
+        let canvas = create_canvas(&window);
+
+        // Render once with the size info we currently have
+        render_circle(&canvas, window.inner_size());
+
+        let _ = event_loop.run(move |event, _| match event {
+            Event::WindowEvent {
+                event: WindowEvent::Resized(resize),
+                window_id,
+            } if window_id == window.id() => {
+                render_circle(&canvas, resize);
+            }
+            _ => (),
+        });
+    }
+
+    pub fn create_canvas(window: &Window) -> HtmlCanvasElement {
+        use winit::platform::web::WindowExtWebSys;
+
+        let web_window = web_sys::window().unwrap();
+        let document = web_window.document().unwrap();
+        let body = document.body().unwrap();
+
+        // Set a background color for the canvas to make it easier to tell the where the canvas is for debugging purposes.
+        let canvas = window.canvas().unwrap();
+        canvas
+            .style()
+            .set_css_text("display: block; background-color: crimson; margin: auto; width: 50%; aspect-ratio: 4 / 1;");
+
+        let explanation = document.create_element("pre").unwrap();
+        explanation.set_text_content(Some(EXPLANATION));
+        body.append_child(&explanation).unwrap();
+
+        canvas
+    }
+
+    pub fn render_circle(canvas: &HtmlCanvasElement, size: PhysicalSize<u32>) {
+        log::info!("rendering circle with canvas size: {:?}", size);
+        let context = canvas
+            .get_context("2d")
+            .unwrap()
+            .unwrap()
+            .dyn_into::<web_sys::CanvasRenderingContext2d>()
+            .unwrap();
+
+        context.begin_path();
+        context
+            .arc(
+                size.width as f64 / 2.0,
+                size.height as f64 / 2.0,
+                size.width.min(size.height) as f64 / 2.0,
+                0.0,
+                std::f64::consts::PI * 2.0,
+            )
+            .unwrap();
+        context.fill();
+    }
+}

examples/window.rs

@@ -0,0 +1,43 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .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, elwt| {
+        println!("{event:?}");
+
+        match event {
+            Event::WindowEvent { event, window_id } if window_id == window.id() => match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::RedrawRequested => {
+                    // Notify the windowing system that we'll be presenting to the window.
+                    window.pre_present_notify();
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            },
+            Event::AboutToWait => {
+                window.request_redraw();
+            }
+
+            _ => (),
+        }
+    })
+}

examples/window_buttons.rs

@@ -0,0 +1,68 @@
+#![allow(clippy::single_match)]
+
+// This example is used by developers to test various window functions.
+
+use simple_logger::SimpleLogger;
+use winit::{
+    dpi::LogicalSize,
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::{DeviceEvents, EventLoop},
+    keyboard::Key,
+    window::{Window, WindowButtons},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .with_inner_size(LogicalSize::new(300.0, 300.0))
+        .build(&event_loop)
+        .unwrap();
+
+    eprintln!("Window Button keys:");
+    eprintln!("  (F) Toggle close button");
+    eprintln!("  (G) Toggle maximize button");
+    eprintln!("  (H) Toggle minimize button");
+
+    event_loop.listen_device_events(DeviceEvents::Always);
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { window_id, event } = event {
+            match event {
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            logical_key: key,
+                            state: ElementState::Pressed,
+                            ..
+                        },
+                    ..
+                } => match key.as_ref() {
+                    Key::Character("F" | "f") => {
+                        let buttons = window.enabled_buttons();
+                        window.set_enabled_buttons(buttons ^ WindowButtons::CLOSE);
+                    }
+                    Key::Character("G" | "g") => {
+                        let buttons = window.enabled_buttons();
+                        window.set_enabled_buttons(buttons ^ WindowButtons::MAXIMIZE);
+                    }
+                    Key::Character("H" | "h") => {
+                        let buttons = window.enabled_buttons();
+                        window.set_enabled_buttons(buttons ^ WindowButtons::MINIMIZE);
+                    }
+                    _ => (),
+                },
+                WindowEvent::CloseRequested if window_id == window.id() => elwt.exit(),
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            }
+        }
+    })
+}

examples/window_debug.rs

@@ -0,0 +1,137 @@
+#![allow(clippy::single_match)]
+
+// This example is used by developers to test various window functions.
+
+use simple_logger::SimpleLogger;
+use winit::{
+    dpi::{LogicalSize, PhysicalSize},
+    event::{DeviceEvent, ElementState, Event, KeyEvent, RawKeyEvent, WindowEvent},
+    event_loop::{DeviceEvents, EventLoop},
+    keyboard::{Key, KeyCode, PhysicalKey},
+    window::{Fullscreen, Window},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .with_inner_size(LogicalSize::new(100.0, 100.0))
+        .build(&event_loop)
+        .unwrap();
+
+    eprintln!("debugging keys:");
+    eprintln!("  (E) Enter exclusive fullscreen");
+    eprintln!("  (F) Toggle borderless fullscreen");
+    eprintln!("  (P) Toggle borderless fullscreen on system's preffered monitor");
+    eprintln!("  (M) Toggle minimized");
+    eprintln!("  (Q) Quit event loop");
+    eprintln!("  (V) Toggle visibility");
+    eprintln!("  (X) Toggle maximized");
+
+    let mut minimized = false;
+    let mut visible = true;
+
+    event_loop.listen_device_events(DeviceEvents::Always);
+
+    event_loop.run(move |event, elwt| {
+        match event {
+            // This used to use the virtual key, but the new API
+            // only provides the `physical_key` (`Code`).
+            Event::DeviceEvent {
+                event:
+                    DeviceEvent::Key(RawKeyEvent {
+                        physical_key,
+                        state: ElementState::Released,
+                        ..
+                    }),
+                ..
+            } => match physical_key {
+                PhysicalKey::Code(KeyCode::KeyM) => {
+                    if minimized {
+                        minimized = !minimized;
+                        window.set_minimized(minimized);
+                        window.focus_window();
+                    }
+                }
+                PhysicalKey::Code(KeyCode::KeyV) => {
+                    if !visible {
+                        visible = !visible;
+                        window.set_visible(visible);
+                    }
+                }
+                _ => (),
+            },
+            Event::WindowEvent { window_id, event } => match event {
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            logical_key: Key::Character(key_str),
+                            state: ElementState::Pressed,
+                            ..
+                        },
+                    ..
+                } => match key_str.as_ref() {
+                    // WARNING: Consider using `key_without_modifers()` if available on your platform.
+                    // See the `key_binding` example
+                    "e" => {
+                        fn area(size: PhysicalSize<u32>) -> u32 {
+                            size.width * size.height
+                        }
+
+                        let monitor = window.current_monitor().unwrap();
+                        if let Some(mode) = monitor
+                            .video_modes()
+                            .max_by(|a, b| area(a.size()).cmp(&area(b.size())))
+                        {
+                            window.set_fullscreen(Some(Fullscreen::Exclusive(mode)));
+                        } else {
+                            eprintln!("no video modes available");
+                        }
+                    }
+                    "f" => {
+                        if window.fullscreen().is_some() {
+                            window.set_fullscreen(None);
+                        } else {
+                            let monitor = window.current_monitor();
+                            window.set_fullscreen(Some(Fullscreen::Borderless(monitor)));
+                        }
+                    }
+                    "p" => {
+                        if window.fullscreen().is_some() {
+                            window.set_fullscreen(None);
+                        } else {
+                            window.set_fullscreen(Some(Fullscreen::Borderless(None)));
+                        }
+                    }
+                    "m" => {
+                        minimized = !minimized;
+                        window.set_minimized(minimized);
+                    }
+                    "q" => {
+                        elwt.exit();
+                    }
+                    "v" => {
+                        visible = !visible;
+                        window.set_visible(visible);
+                    }
+                    "x" => {
+                        let is_maximized = window.is_maximized();
+                        window.set_maximized(!is_maximized);
+                    }
+                    _ => (),
+                },
+                WindowEvent::CloseRequested if window_id == window.id() => elwt.exit(),
+                WindowEvent::RedrawRequested => {
+                    fill::fill_window(&window);
+                }
+                _ => (),
+            },
+            _ => (),
+        }
+    })
+}

examples/window_drag_resize.rs

@@ -0,0 +1,149 @@
+//! Demonstrates capability to create in-app draggable regions for client-side decoration support.
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{ElementState, Event, KeyEvent, MouseButton, StartCause, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::Key,
+    window::{CursorIcon, ResizeDirection, Window},
+};
+
+const BORDER: f64 = 8.0;
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_inner_size(winit::dpi::LogicalSize::new(600.0, 400.0))
+        .with_min_inner_size(winit::dpi::LogicalSize::new(400.0, 200.0))
+        .with_decorations(false)
+        .build(&event_loop)
+        .unwrap();
+
+    let mut border = false;
+    let mut cursor_location = None;
+
+    event_loop.run(move |event, elwt| match event {
+        Event::NewEvents(StartCause::Init) => {
+            eprintln!("Press 'B' to toggle borderless")
+        }
+        Event::WindowEvent { event, .. } => match event {
+            WindowEvent::CloseRequested => elwt.exit(),
+            WindowEvent::CursorMoved { position, .. } => {
+                if !window.is_decorated() {
+                    let new_location =
+                        cursor_resize_direction(window.inner_size(), position, BORDER);
+
+                    if new_location != cursor_location {
+                        cursor_location = new_location;
+                        window.set_cursor(cursor_direction_icon(cursor_location))
+                    }
+                }
+            }
+
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Left,
+                ..
+            } => {
+                if let Some(dir) = cursor_location {
+                    let _res = window.drag_resize_window(dir);
+                } else if !window.is_decorated() {
+                    let _res = window.drag_window();
+                }
+            }
+            WindowEvent::KeyboardInput {
+                event:
+                    KeyEvent {
+                        state: ElementState::Released,
+                        logical_key: Key::Character(c),
+                        ..
+                    },
+                ..
+            } if matches!(c.as_ref(), "B" | "b") => {
+                border = !border;
+                window.set_decorations(border);
+            }
+            WindowEvent::RedrawRequested => {
+                fill::fill_window(&window);
+            }
+            _ => (),
+        },
+
+        _ => (),
+    })
+}
+
+fn cursor_direction_icon(resize_direction: Option<ResizeDirection>) -> CursorIcon {
+    match resize_direction {
+        Some(resize_direction) => match resize_direction {
+            ResizeDirection::East => CursorIcon::EResize,
+            ResizeDirection::North => CursorIcon::NResize,
+            ResizeDirection::NorthEast => CursorIcon::NeResize,
+            ResizeDirection::NorthWest => CursorIcon::NwResize,
+            ResizeDirection::South => CursorIcon::SResize,
+            ResizeDirection::SouthEast => CursorIcon::SeResize,
+            ResizeDirection::SouthWest => CursorIcon::SwResize,
+            ResizeDirection::West => CursorIcon::WResize,
+        },
+        None => CursorIcon::Default,
+    }
+}
+
+fn cursor_resize_direction(
+    win_size: winit::dpi::PhysicalSize<u32>,
+    position: winit::dpi::PhysicalPosition<f64>,
+    border_size: f64,
+) -> Option<ResizeDirection> {
+    enum XDirection {
+        West,
+        East,
+        Default,
+    }
+
+    enum YDirection {
+        North,
+        South,
+        Default,
+    }
+
+    let xdir = if position.x < border_size {
+        XDirection::West
+    } else if position.x > (win_size.width as f64 - border_size) {
+        XDirection::East
+    } else {
+        XDirection::Default
+    };
+
+    let ydir = if position.y < border_size {
+        YDirection::North
+    } else if position.y > (win_size.height as f64 - border_size) {
+        YDirection::South
+    } else {
+        YDirection::Default
+    };
+
+    Some(match xdir {
+        XDirection::West => match ydir {
+            YDirection::North => ResizeDirection::NorthWest,
+            YDirection::South => ResizeDirection::SouthWest,
+            YDirection::Default => ResizeDirection::West,
+        },
+
+        XDirection::East => match ydir {
+            YDirection::North => ResizeDirection::NorthEast,
+            YDirection::South => ResizeDirection::SouthEast,
+            YDirection::Default => ResizeDirection::East,
+        },
+
+        XDirection::Default => match ydir {
+            YDirection::North => ResizeDirection::North,
+            YDirection::South => ResizeDirection::South,
+            YDirection::Default => return None,
+        },
+    })
+}

examples/window_icon.rs

@@ -0,0 +1,60 @@
+#![allow(clippy::single_match)]
+
+use std::path::Path;
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, WindowEvent},
+    event_loop::EventLoop,
+    window::{Icon, Window},
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+
+    // You'll have to choose an icon size at your own discretion. On X11, the desired size varies
+    // by WM, and on Windows, you still have to account for screen scaling. Here we use 32px,
+    // since it seems to work well enough in most cases. Be careful about going too high, or
+    // you'll be bitten by the low-quality downscaling built into the WM.
+    let path = concat!(env!("CARGO_MANIFEST_DIR"), "/examples/icon.png");
+
+    let icon = load_icon(Path::new(path));
+
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("An iconic window!")
+        // At present, this only does anything on Windows and X11, so if you want to save load
+        // time, you can put icon loading behind a function that returns `None` on other platforms.
+        .with_window_icon(Some(icon))
+        .build(&event_loop)
+        .unwrap();
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, .. } = event {
+            match event {
+                WindowEvent::CloseRequested => elwt.exit(),
+                WindowEvent::DroppedFile(path) => {
+                    window.set_window_icon(Some(load_icon(&path)));
+                }
+                WindowEvent::RedrawRequested => fill::fill_window(&window),
+                _ => (),
+            }
+        }
+    })
+}
+
+fn load_icon(path: &Path) -> Icon {
+    let (icon_rgba, icon_width, icon_height) = {
+        let image = image::open(path)
+            .expect("Failed to open icon path")
+            .into_rgba8();
+        let (width, height) = image.dimensions();
+        let rgba = image.into_raw();
+        (rgba, width, height)
+    };
+    Icon::from_rgba(icon_rgba, icon_width, icon_height).expect("Failed to open icon")
+}

examples/window_on_demand.rs

@@ -30,7 +30,7 @@ fn main() -> Result<(), impl std::error::Error> {
     fn run_app(event_loop: &mut EventLoop<()>, idx: usize) -> Result<(), EventLoopError> {
         let mut app = App::default();
 
-        event_loop.run_on_demand(move |event, event_loop| {
+        event_loop.run_on_demand(move |event, elwt| {
             println!("Run {idx}: {:?}", event);
 
             if let Some(window) = &app.window {
@@ -60,15 +60,16 @@ fn main() -> Result<(), impl std::error::Error> {
                     } if id == window_id => {
                         println!("--------------------------------------------------------- Window {idx} Destroyed");
                         app.window_id = None;
-                        event_loop.exit();
+                        elwt.exit();
                     }
                     _ => (),
                 }
             } else if let Event::Resumed = event {
-                let window_attributes = Window::default_attributes()
+                let window = Window::builder()
                         .with_title("Fantastic window number one!")
-                        .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0));
+                        .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
-                let window = event_loop.create_window(window_attributes).unwrap();
+                        .build(elwt)
+                        .unwrap();
                 app.window_id = Some(window.id());
                 app.window = Some(window);
             }

examples/window_option_as_alt.rs

@@ -0,0 +1,72 @@
+#![allow(clippy::single_match)]
+
+#[cfg(target_os = "macos")]
+use winit::platform::macos::{OptionAsAlt, WindowExtMacOS};
+
+#[cfg(target_os = "macos")]
+use winit::{
+    event::ElementState,
+    event::{Event, MouseButton, WindowEvent},
+    event_loop::EventLoop,
+    window::Window,
+};
+
+#[cfg(target_os = "macos")]
+#[path = "util/fill.rs"]
+mod fill;
+
+/// Prints the keyboard events characters received when option_is_alt is true versus false.
+/// A left mouse click will toggle option_is_alt.
+#[cfg(target_os = "macos")]
+fn main() -> Result<(), impl std::error::Error> {
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
+        .build(&event_loop)
+        .unwrap();
+
+    window.set_ime_allowed(true);
+
+    let mut option_as_alt = window.option_as_alt();
+
+    event_loop.run(move |event, elwt| match event {
+        Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            window_id,
+        } if window_id == window.id() => elwt.exit(),
+        Event::WindowEvent { event, .. } => match event {
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Left,
+                ..
+            } => {
+                option_as_alt = match option_as_alt {
+                    OptionAsAlt::None => OptionAsAlt::OnlyLeft,
+                    OptionAsAlt::OnlyLeft => OptionAsAlt::OnlyRight,
+                    OptionAsAlt::OnlyRight => OptionAsAlt::Both,
+                    OptionAsAlt::Both => OptionAsAlt::None,
+                };
+
+                println!("Received Mouse click, toggling option_as_alt to: {option_as_alt:?}");
+                window.set_option_as_alt(option_as_alt);
+            }
+            WindowEvent::KeyboardInput { .. } => println!("KeyboardInput: {event:?}"),
+            WindowEvent::RedrawRequested => {
+                fill::fill_window(&window);
+            }
+            _ => (),
+        },
+        Event::AboutToWait => {
+            window.request_redraw();
+        }
+
+        _ => (),
+    })
+}
+
+#[cfg(not(target_os = "macos"))]
+fn main() {
+    println!("This example is only supported on MacOS");
+}

examples/window_pump_events.rs

@@ -25,40 +25,38 @@ fn main() -> std::process::ExitCode {
     let mut event_loop = EventLoop::new().unwrap();
 
     SimpleLogger::new().init().unwrap();
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .build(&event_loop)
+        .unwrap();
 
-    let mut window = None;
+    'main: loop {
-
-    loop {
         let timeout = Some(Duration::ZERO);
-        let status = event_loop.pump_events(timeout, |event, event_loop| {
+        let status = event_loop.pump_events(timeout, |event, elwt| {
             if let Event::WindowEvent { event, .. } = &event {
                 // Print only Window events to reduce noise
                 println!("{event:?}");
             }
 
             match event {
-                Event::Resumed => {
+                Event::WindowEvent {
-                    let window_attributes =
+                    event: WindowEvent::CloseRequested,
-                        Window::default_attributes().with_title("A fantastic window!");
+                    window_id,
-                    window = Some(event_loop.create_window(window_attributes).unwrap());
+                } if window_id == window.id() => elwt.exit(),
-                }
-                Event::WindowEvent { event, .. } => {
-                    let window = window.as_ref().unwrap();
-                    match event {
-                        WindowEvent::CloseRequested => event_loop.exit(),
-                        WindowEvent::RedrawRequested => fill::fill_window(window),
-                        _ => (),
-                    }
-                }
                 Event::AboutToWait => {
-                    window.as_ref().unwrap().request_redraw();
+                    window.request_redraw();
+                }
+                Event::WindowEvent {
+                    event: WindowEvent::RedrawRequested,
+                    ..
+                } => {
+                    fill::fill_window(&window);
                 }
                 _ => (),
             }
         });
-
         if let PumpStatus::Exit(exit_code) = status {
-            break ExitCode::from(exit_code as u8);
+            break 'main ExitCode::from(exit_code as u8);
         }
 
         // Sleep for 1/60 second to simulate application work

examples/window_resize_increments.rs

@@ -0,0 +1,52 @@
+use log::debug;
+use simple_logger::SimpleLogger;
+use winit::{
+    dpi::LogicalSize,
+    event::{ElementState, Event, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::NamedKey,
+    window::Window,
+};
+
+#[path = "util/fill.rs"]
+mod fill;
+
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let window = Window::builder()
+        .with_title("A fantastic window!")
+        .with_inner_size(LogicalSize::new(128.0, 128.0))
+        .with_resize_increments(LogicalSize::new(25.0, 25.0))
+        .build(&event_loop)
+        .unwrap();
+
+    let mut has_increments = true;
+
+    event_loop.run(move |event, elwt| match event {
+        Event::WindowEvent { event, window_id } if window_id == window.id() => match event {
+            WindowEvent::CloseRequested => elwt.exit(),
+            WindowEvent::KeyboardInput { event, .. }
+                if event.logical_key == NamedKey::Space
+                    && event.state == ElementState::Released =>
+            {
+                has_increments = !has_increments;
+
+                let new_increments = match window.resize_increments() {
+                    Some(_) => None,
+                    None => Some(LogicalSize::new(25.0, 25.0)),
+                };
+                debug!("Had increments: {}", new_increments.is_none());
+                window.set_resize_increments(new_increments);
+            }
+            WindowEvent::RedrawRequested => {
+                fill::fill_window(&window);
+            }
+            _ => (),
+        },
+        Event::AboutToWait => window.request_redraw(),
+
+        _ => (),
+    })
+}

examples/window_tabbing.rs

@@ -0,0 +1,107 @@
+#![allow(clippy::single_match)]
+
+#[cfg(target_os = "macos")]
+use std::{collections::HashMap, num::NonZeroUsize};
+
+#[cfg(target_os = "macos")]
+use simple_logger::SimpleLogger;
+#[cfg(target_os = "macos")]
+use winit::{
+    event::{ElementState, Event, KeyEvent, WindowEvent},
+    event_loop::EventLoop,
+    keyboard::{Key, NamedKey},
+    platform::macos::{WindowBuilderExtMacOS, WindowExtMacOS},
+    window::Window,
+};
+
+#[cfg(target_os = "macos")]
+#[path = "util/fill.rs"]
+mod fill;
+
+#[cfg(target_os = "macos")]
+fn main() -> Result<(), impl std::error::Error> {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new().unwrap();
+
+    let mut windows = HashMap::new();
+    let window = Window::new(&event_loop).unwrap();
+    println!("Opened a new window: {:?}", window.id());
+    windows.insert(window.id(), window);
+
+    println!("Press N to open a new window.");
+
+    event_loop.run(move |event, elwt| {
+        if let Event::WindowEvent { event, window_id } = event {
+            match event {
+                WindowEvent::CloseRequested => {
+                    println!("Window {window_id:?} has received the signal to close");
+
+                    // This drops the window, causing it to close.
+                    windows.remove(&window_id);
+
+                    if windows.is_empty() {
+                        elwt.exit();
+                    }
+                }
+                WindowEvent::Resized(_) => {
+                    if let Some(window) = windows.get(&window_id) {
+                        window.request_redraw();
+                    }
+                }
+                WindowEvent::KeyboardInput {
+                    event:
+                        KeyEvent {
+                            state: ElementState::Pressed,
+                            logical_key,
+                            ..
+                        },
+                    is_synthetic: false,
+                    ..
+                } => match logical_key.as_ref() {
+                    Key::Character("t") => {
+                        let tabbing_id = windows.get(&window_id).unwrap().tabbing_identifier();
+                        let window = Window::builder()
+                            .with_tabbing_identifier(&tabbing_id)
+                            .build(elwt)
+                            .unwrap();
+                        println!("Added a new tab: {:?}", window.id());
+                        windows.insert(window.id(), window);
+                    }
+                    Key::Character("w") => {
+                        let _ = windows.remove(&window_id);
+                    }
+                    Key::Named(NamedKey::ArrowRight) => {
+                        windows.get(&window_id).unwrap().select_next_tab();
+                    }
+                    Key::Named(NamedKey::ArrowLeft) => {
+                        windows.get(&window_id).unwrap().select_previous_tab();
+                    }
+                    Key::Character(ch) => {
+                        if let Ok(index) = ch.parse::<NonZeroUsize>() {
+                            let index = index.get();
+                            // Select the last tab when pressing `9`.
+                            let window = windows.get(&window_id).unwrap();
+                            if index == 9 {
+                                window.select_tab_at_index(window.num_tabs() - 1)
+                            } else {
+                                window.select_tab_at_index(index - 1);
+                            }
+                        }
+                    }
+                    _ => (),
+                },
+                WindowEvent::RedrawRequested => {
+                    if let Some(window) = windows.get(&window_id) {
+                        fill::fill_window(window);
+                    }
+                }
+                _ => (),
+            }
+        }
+    })
+}
+
+#[cfg(not(target_os = "macos"))]
+fn main() {
+    println!("This example is only supported on MacOS");
+}

examples/x11_embed.rs

@@ -1,62 +1,70 @@
 //! A demonstration of embedding a winit window in an existing X11 application.
-use std::error::Error;
 
 #[cfg(x11_platform)]
-fn main() -> Result<(), Box<dyn Error>> {
+#[path = "util/fill.rs"]
-    use simple_logger::SimpleLogger;
+mod fill;
 
+#[cfg(x11_platform)]
+mod imple {
+    use super::fill;
+    use simple_logger::SimpleLogger;
     use winit::{
         event::{Event, WindowEvent},
         event_loop::EventLoop,
-        platform::x11::WindowAttributesExtX11,
+        platform::x11::WindowBuilderExtX11,
         window::Window,
     };
 
-    #[path = "util/fill.rs"]
+    pub(super) fn entry() -> Result<(), Box<dyn std::error::Error>> {
-    mod fill;
+        // First argument should be a 32-bit X11 window ID.
+        let parent_window_id = std::env::args()
+            .nth(1)
+            .ok_or("Expected a 32-bit X11 window ID as the first argument.")?
+            .parse::<u32>()?;
 
-    // First argument should be a 32-bit X11 window ID.
+        SimpleLogger::new().init().unwrap();
-    let parent_window_id = std::env::args()
+        let event_loop = EventLoop::new()?;
-        .nth(1)
-        .ok_or("Expected a 32-bit X11 window ID as the first argument.")?
-        .parse::<u32>()?;
 
-    SimpleLogger::new().init().unwrap();
+        let window = Window::builder()
-    let event_loop = EventLoop::new()?;
+            .with_title("An embedded window!")
-
+            .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
-    let mut window = None;
+            .with_embed_parent_window(parent_window_id)
-    event_loop.run(move |event, event_loop| match event {
+            .build(&event_loop)
-        Event::Resumed => {
+            .unwrap();
-            let window_attributes = Window::default_attributes()
-                .with_title("An embedded window!")
-                .with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
-                .with_embed_parent_window(parent_window_id);
-
-            window = Some(event_loop.create_window(window_attributes).unwrap());
-        }
-        Event::WindowEvent { event, .. } => {
-            let window = window.as_ref().unwrap();
 
+        event_loop.run(move |event, elwt| {
             match event {
-                WindowEvent::CloseRequested => event_loop.exit(),
+                Event::WindowEvent {
-                WindowEvent::RedrawRequested => {
+                    event: WindowEvent::CloseRequested,
+                    window_id,
+                } if window_id == window.id() => elwt.exit(),
+                Event::AboutToWait => {
+                    window.request_redraw();
+                }
+                Event::WindowEvent {
+                    event: WindowEvent::RedrawRequested,
+                    ..
+                } => {
+                    // Notify the windowing system that we'll be presenting to the window.
                     window.pre_present_notify();
-                    fill::fill_window(window);
+                    fill::fill_window(&window);
                 }
                 _ => (),
             }
-        }
+        })?;
-        Event::AboutToWait => {
-            window.as_ref().unwrap().request_redraw();
-        }
-        _ => (),
-    })?;
 
-    Ok(())
+        Ok(())
+    }
 }
 
 #[cfg(not(x11_platform))]
-fn main() -> Result<(), Box<dyn Error>> {
+mod imple {
-    println!("This example is only supported on X11 platforms.");
+    pub(super) fn entry() -> Result<(), Box<dyn std::error::Error>> {
-    Ok(())
+        println!("This example is only supported on X11 platforms.");
+        Ok(())
+    }
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    imple::entry()
 }

run-wasm/Cargo.toml

@@ -1,11 +1,9 @@
 [package]
 name = "run-wasm"
 version = "0.1.0"
-rust-version.workspace = true
+edition = "2021"
-repository.workspace = true
+
-license.workspace = true
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-edition.workspace = true
-publish = false
 
 [dependencies]
 cargo-run-wasm = "0.2.0"

src/cursor.rs

@@ -5,7 +5,8 @@ use std::{error::Error, hash::Hash};
 
 use cursor_icon::CursorIcon;
 
-use crate::platform_impl::{PlatformCustomCursor, PlatformCustomCursorSource};
+use crate::event_loop::EventLoopWindowTarget;
+use crate::platform_impl::{self, PlatformCustomCursor, PlatformCustomCursorBuilder};
 
 /// The maximum width and height for a cursor when using [`CustomCursor::from_rgba`].
 pub const MAX_CURSOR_SIZE: u16 = 2048;
@@ -48,28 +49,31 @@ impl From<CustomCursor> for Cursor {
 /// # Example
 ///
 /// ```no_run
-/// # use winit::event_loop::ActiveEventLoop;
+/// use winit::{
-/// # use winit::window::Window;
+///     event::{Event, WindowEvent},
-/// # fn scope(event_loop: &ActiveEventLoop, window: &Window) {
+///     event_loop::{ControlFlow, EventLoop},
-/// use winit::window::CustomCursor;
+///     window::{CustomCursor, Window},
+/// };
+///
+/// let mut event_loop = EventLoop::new().unwrap();
 ///
 /// let w = 10;
 /// let h = 10;
 /// let rgba = vec![255; (w * h * 4) as usize];
 ///
 /// #[cfg(not(target_family = "wasm"))]
-/// let source = CustomCursor::from_rgba(rgba, w, h, w / 2, h / 2).unwrap();
+/// let builder = CustomCursor::from_rgba(rgba, w, h, w / 2, h / 2).unwrap();
 ///
 /// #[cfg(target_family = "wasm")]
-/// let source = {
+/// let builder = {
 ///     use winit::platform::web::CustomCursorExtWebSys;
 ///     CustomCursor::from_url(String::from("http://localhost:3000/cursor.png"), 0, 0)
 /// };
 ///
-/// let custom_cursor = event_loop.create_custom_cursor(source);
+/// let custom_cursor = builder.build(&event_loop);
 ///
+/// let window = Window::new(&event_loop).unwrap();
 /// window.set_cursor(custom_cursor.clone());
-/// # }
 /// ```
 #[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub struct CustomCursor {
@@ -87,9 +91,9 @@ impl CustomCursor {
         height: u16,
         hotspot_x: u16,
         hotspot_y: u16,
-    ) -> Result<CustomCursorSource, BadImage> {
+    ) -> Result<CustomCursorBuilder, BadImage> {
-        Ok(CustomCursorSource {
+        Ok(CustomCursorBuilder {
-            inner: PlatformCustomCursorSource::from_rgba(
+            inner: PlatformCustomCursorBuilder::from_rgba(
                 rgba.into(),
                 width,
                 height,
@@ -100,12 +104,20 @@ impl CustomCursor {
     }
 }
 
-/// Source for [`CustomCursor`].
+/// Builds a [`CustomCursor`].
 ///
 /// See [`CustomCursor`] for more details.
 #[derive(Debug)]
-pub struct CustomCursorSource {
+pub struct CustomCursorBuilder {
-    pub(crate) inner: PlatformCustomCursorSource,
+    pub(crate) inner: PlatformCustomCursorBuilder,
+}
+
+impl CustomCursorBuilder {
+    pub fn build(self, window_target: &EventLoopWindowTarget) -> CustomCursor {
+        CustomCursor {
+            inner: PlatformCustomCursor::build(self.inner, &window_target.p),
+        }
+    }
 }
 
 /// An error produced when using [`CustomCursor::from_rgba`] with invalid arguments.
@@ -166,14 +178,12 @@ impl fmt::Display for BadImage {
 
 impl Error for BadImage {}
 
-/// Platforms export this directly as `PlatformCustomCursorSource` if they need to only work with
+/// Platforms export this directly as `PlatformCustomCursorBuilder` if they need to only work with images.
-/// images.
-#[allow(dead_code)]
 #[derive(Debug)]
-pub(crate) struct OnlyCursorImageSource(pub(crate) CursorImage);
+pub(crate) struct OnlyCursorImageBuilder(pub(crate) CursorImage);
 
 #[allow(dead_code)]
-impl OnlyCursorImageSource {
+impl OnlyCursorImageBuilder {
     pub(crate) fn from_rgba(
         rgba: Vec<u8>,
         width: u16,
@@ -203,6 +213,16 @@ impl PartialEq for OnlyCursorImage {
 
 impl Eq for OnlyCursorImage {}
 
+#[allow(dead_code)]
+impl OnlyCursorImage {
+    pub(crate) fn build(
+        builder: OnlyCursorImageBuilder,
+        _: &platform_impl::EventLoopWindowTarget,
+    ) -> Self {
+        Self(Arc::new(builder.0))
+    }
+}
+
 #[derive(Debug)]
 #[allow(dead_code)]
 pub(crate) struct CursorImage {
@@ -277,4 +297,8 @@ impl NoCustomCursor {
         CursorImage::from_rgba(rgba, width, height, hotspot_x, hotspot_y)?;
         Ok(Self)
     }
+
+    fn build(self, _: &platform_impl::EventLoopWindowTarget) -> NoCustomCursor {
+        self
+    }
 }

src/dpi.rs

@@ -1,4 +1,4 @@
-//! # DPI
+//! UI scaling is important, so read the docs for this module if you don't want to be confused.
 //!
 //! ## Why should I care about UI scaling?
 //!
@@ -35,11 +35,14 @@
 //!
 //! ### Position and Size types
 //!
-//! The [`PhysicalPosition`] / [`PhysicalSize`] types correspond with the actual pixels on the
+//! Winit's [`PhysicalPosition`] / [`PhysicalSize`] types correspond with the actual pixels on the
 //! device, and the [`LogicalPosition`] / [`LogicalSize`] 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.
 //!
-//! The position and size types are generic over their exact pixel type, `P`, to allow the
+//! Winit's position and size 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
@@ -48,24 +51,58 @@
 //! rounding properly. Note that precision loss will still occur when rounding from a float to an
 //! int, although rounding lessens the problem.
 //!
-//! ## Cargo Features
+//! ### Events
 //!
-//! This crate provides the following Cargo features:
+//! Winit will dispatch a [`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 allows you 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`] event, its scale factor
+//! can be found by calling [`window.scale_factor()`].
 //!
-//! * `serde`: Enables serialization/deserialization of certain types with
+//! ## How is the scale factor calculated?
-//!   [Serde](https://crates.io/crates/serde).
+//!
-//! * `mint`: Enables mint (math interoperability standard types) conversions.
+//! The 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:** Recent macOS versions allow the user to change the scaling factor for specific
+//!   displays. When available, the user may pick a per-monitor scaling factor from a set of
+//!   pre-defined settings. All "retina displays" have a scaling factor above 1.0 by default,
+//!   but the specific value varies across devices.
+//! - **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, calculate 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:** The scale factor is suggested by the compositor for each window individually. The
+//!   monitor scale factor may differ from the window scale factor.
+//! - **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.
+//!   In other words, it is the value of [`window.devicePixelRatio`][web_1]. It is affected by
+//!   both the screen scaling and the browser zoom level and can go below `1.0`.
 //!
 //!
 //! [points]: https://en.wikipedia.org/wiki/Point_(typography)
 //! [picas]: https://en.wikipedia.org/wiki/Pica_(typography)
-
+//! [`ScaleFactorChanged`]: crate::event::WindowEvent::ScaleFactorChanged
-#![cfg_attr(
+//! [`window.scale_factor()`]: crate::window::Window::scale_factor
-    docsrs,
+//! [windows_1]: https://docs.microsoft.com/en-us/windows/win32/hidpi/high-dpi-desktop-application-development-on-windows
-    feature(doc_auto_cfg, doc_cfg_hide),
+//! [apple_1]: https://developer.apple.com/library/archive/documentation/DeviceInformation/Reference/iOSDeviceCompatibility/Displays/Displays.html
-    doc(cfg_hide(doc, docsrs))
+//! [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
-#![forbid(unsafe_code)]
+//! [web_1]: https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
@@ -131,7 +168,7 @@ pub fn validate_scale_factor(scale_factor: f64) -> bool {
 /// 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 noticeable issues. To help with that, an `Into<(i32, i32)>`
+/// 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, Eq, PartialEq, Ord, PartialOrd, Default, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
@@ -550,13 +587,15 @@ impl<P: Pixel> From<LogicalPosition<P>> for Position {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
+    use crate::dpi;
     use std::collections::HashSet;
 
     macro_rules! test_pixel_int_impl {
         ($($name:ident => $ty:ty),*) => {$(
             #[test]
             fn $name() {
+                use dpi::Pixel;
+
                 assert_eq!(
                     <$ty as Pixel>::from_f64(37.0),
                     37,
@@ -625,6 +664,8 @@ mod tests {
     ($($name:ident => $ty:ty),*) => {$(
         #[test]
         fn $name() {
+            use dpi::Pixel;
+
             assert_approx_eq!(
                 <$ty as Pixel>::from_f64(37.0),
                 37.0,
@@ -717,40 +758,46 @@ mod tests {
 
     #[test]
     fn test_validate_scale_factor() {
-        assert!(validate_scale_factor(1.0));
+        assert!(dpi::validate_scale_factor(1.0));
-        assert!(validate_scale_factor(2.0));
+        assert!(dpi::validate_scale_factor(2.0));
-        assert!(validate_scale_factor(3.0));
+        assert!(dpi::validate_scale_factor(3.0));
-        assert!(validate_scale_factor(1.5));
+        assert!(dpi::validate_scale_factor(1.5));
-        assert!(validate_scale_factor(0.5));
+        assert!(dpi::validate_scale_factor(0.5));
 
-        assert!(!validate_scale_factor(0.0));
+        assert!(!dpi::validate_scale_factor(0.0));
-        assert!(!validate_scale_factor(-1.0));
+        assert!(!dpi::validate_scale_factor(-1.0));
-        assert!(!validate_scale_factor(f64::INFINITY));
+        assert!(!dpi::validate_scale_factor(f64::INFINITY));
-        assert!(!validate_scale_factor(f64::NAN));
+        assert!(!dpi::validate_scale_factor(f64::NAN));
-        assert!(!validate_scale_factor(f64::NEG_INFINITY));
+        assert!(!dpi::validate_scale_factor(f64::NEG_INFINITY));
     }
 
     #[test]
     fn test_logical_position() {
-        let log_pos = LogicalPosition::new(1.0, 2.0);
+        let log_pos = dpi::LogicalPosition::new(1.0, 2.0);
-        assert_eq!(log_pos.to_physical::<u32>(1.0), PhysicalPosition::new(1, 2));
+        assert_eq!(
-        assert_eq!(log_pos.to_physical::<u32>(2.0), PhysicalPosition::new(2, 4));
+            log_pos.to_physical::<u32>(1.0),
-        assert_eq!(log_pos.cast::<u32>(), LogicalPosition::new(1, 2));
+            dpi::PhysicalPosition::new(1, 2)
+        );
+        assert_eq!(
+            log_pos.to_physical::<u32>(2.0),
+            dpi::PhysicalPosition::new(2, 4)
+        );
+        assert_eq!(log_pos.cast::<u32>(), dpi::LogicalPosition::new(1, 2));
         assert_eq!(
             log_pos,
-            LogicalPosition::from_physical(PhysicalPosition::new(1.0, 2.0), 1.0)
+            dpi::LogicalPosition::from_physical(dpi::PhysicalPosition::new(1.0, 2.0), 1.0)
         );
         assert_eq!(
             log_pos,
-            LogicalPosition::from_physical(PhysicalPosition::new(2.0, 4.0), 2.0)
+            dpi::LogicalPosition::from_physical(dpi::PhysicalPosition::new(2.0, 4.0), 2.0)
         );
         assert_eq!(
-            LogicalPosition::from((2.0, 2.0)),
+            dpi::LogicalPosition::from((2.0, 2.0)),
-            LogicalPosition::new(2.0, 2.0)
+            dpi::LogicalPosition::new(2.0, 2.0)
         );
         assert_eq!(
-            LogicalPosition::from([2.0, 3.0]),
+            dpi::LogicalPosition::from([2.0, 3.0]),
-            LogicalPosition::new(2.0, 3.0)
+            dpi::LogicalPosition::new(2.0, 3.0)
         );
 
         let x: (f64, f64) = log_pos.into();
@@ -762,44 +809,56 @@ mod tests {
     #[test]
     fn test_physical_position() {
         assert_eq!(
-            PhysicalPosition::from_logical(LogicalPosition::new(1.0, 2.0), 1.0),
+            dpi::PhysicalPosition::from_logical(dpi::LogicalPosition::new(1.0, 2.0), 1.0),
-            PhysicalPosition::new(1, 2)
+            dpi::PhysicalPosition::new(1, 2)
         );
         assert_eq!(
-            PhysicalPosition::from_logical(LogicalPosition::new(2.0, 4.0), 0.5),
+            dpi::PhysicalPosition::from_logical(dpi::LogicalPosition::new(2.0, 4.0), 0.5),
-            PhysicalPosition::new(1, 2)
+            dpi::PhysicalPosition::new(1, 2)
         );
         assert_eq!(
-            PhysicalPosition::from((2.0, 2.0)),
+            dpi::PhysicalPosition::from((2.0, 2.0)),
-            PhysicalPosition::new(2.0, 2.0)
+            dpi::PhysicalPosition::new(2.0, 2.0)
         );
         assert_eq!(
-            PhysicalPosition::from([2.0, 3.0]),
+            dpi::PhysicalPosition::from([2.0, 3.0]),
-            PhysicalPosition::new(2.0, 3.0)
+            dpi::PhysicalPosition::new(2.0, 3.0)
         );
 
-        let x: (f64, f64) = PhysicalPosition::new(1, 2).into();
+        let x: (f64, f64) = dpi::PhysicalPosition::new(1, 2).into();
         assert_eq!(x, (1.0, 2.0));
-        let x: [f64; 2] = PhysicalPosition::new(1, 2).into();
+        let x: [f64; 2] = dpi::PhysicalPosition::new(1, 2).into();
         assert_eq!(x, [1.0, 2.0]);
     }
 
     #[test]
     fn test_logical_size() {
-        let log_size = LogicalSize::new(1.0, 2.0);
+        let log_size = dpi::LogicalSize::new(1.0, 2.0);
-        assert_eq!(log_size.to_physical::<u32>(1.0), PhysicalSize::new(1, 2));
+        assert_eq!(
-        assert_eq!(log_size.to_physical::<u32>(2.0), PhysicalSize::new(2, 4));
+            log_size.to_physical::<u32>(1.0),
-        assert_eq!(log_size.cast::<u32>(), LogicalSize::new(1, 2));
+            dpi::PhysicalSize::new(1, 2)
+        );
+        assert_eq!(
+            log_size.to_physical::<u32>(2.0),
+            dpi::PhysicalSize::new(2, 4)
+        );
+        assert_eq!(log_size.cast::<u32>(), dpi::LogicalSize::new(1, 2));
         assert_eq!(
             log_size,
-            LogicalSize::from_physical(PhysicalSize::new(1.0, 2.0), 1.0)
+            dpi::LogicalSize::from_physical(dpi::PhysicalSize::new(1.0, 2.0), 1.0)
         );
         assert_eq!(
             log_size,
-            LogicalSize::from_physical(PhysicalSize::new(2.0, 4.0), 2.0)
+            dpi::LogicalSize::from_physical(dpi::PhysicalSize::new(2.0, 4.0), 2.0)
+        );
+        assert_eq!(
+            dpi::LogicalSize::from((2.0, 2.0)),
+            dpi::LogicalSize::new(2.0, 2.0)
+        );
+        assert_eq!(
+            dpi::LogicalSize::from([2.0, 3.0]),
+            dpi::LogicalSize::new(2.0, 3.0)
         );
-        assert_eq!(LogicalSize::from((2.0, 2.0)), LogicalSize::new(2.0, 2.0));
-        assert_eq!(LogicalSize::from([2.0, 3.0]), LogicalSize::new(2.0, 3.0));
 
         let x: (f64, f64) = log_size.into();
         assert_eq!(x, (1.0, 2.0));
@@ -810,130 +869,136 @@ mod tests {
     #[test]
     fn test_physical_size() {
         assert_eq!(
-            PhysicalSize::from_logical(LogicalSize::new(1.0, 2.0), 1.0),
+            dpi::PhysicalSize::from_logical(dpi::LogicalSize::new(1.0, 2.0), 1.0),
-            PhysicalSize::new(1, 2)
+            dpi::PhysicalSize::new(1, 2)
         );
         assert_eq!(
-            PhysicalSize::from_logical(LogicalSize::new(2.0, 4.0), 0.5),
+            dpi::PhysicalSize::from_logical(dpi::LogicalSize::new(2.0, 4.0), 0.5),
-            PhysicalSize::new(1, 2)
+            dpi::PhysicalSize::new(1, 2)
+        );
+        assert_eq!(
+            dpi::PhysicalSize::from((2.0, 2.0)),
+            dpi::PhysicalSize::new(2.0, 2.0)
+        );
+        assert_eq!(
+            dpi::PhysicalSize::from([2.0, 3.0]),
+            dpi::PhysicalSize::new(2.0, 3.0)
         );
-        assert_eq!(PhysicalSize::from((2.0, 2.0)), PhysicalSize::new(2.0, 2.0));
-        assert_eq!(PhysicalSize::from([2.0, 3.0]), PhysicalSize::new(2.0, 3.0));
 
-        let x: (f64, f64) = PhysicalSize::new(1, 2).into();
+        let x: (f64, f64) = dpi::PhysicalSize::new(1, 2).into();
         assert_eq!(x, (1.0, 2.0));
-        let x: [f64; 2] = PhysicalSize::new(1, 2).into();
+        let x: [f64; 2] = dpi::PhysicalSize::new(1, 2).into();
         assert_eq!(x, [1.0, 2.0]);
     }
 
     #[test]
     fn test_size() {
         assert_eq!(
-            Size::new(PhysicalSize::new(1, 2)),
+            dpi::Size::new(dpi::PhysicalSize::new(1, 2)),
-            Size::Physical(PhysicalSize::new(1, 2))
+            dpi::Size::Physical(dpi::PhysicalSize::new(1, 2))
         );
         assert_eq!(
-            Size::new(LogicalSize::new(1.0, 2.0)),
+            dpi::Size::new(dpi::LogicalSize::new(1.0, 2.0)),
-            Size::Logical(LogicalSize::new(1.0, 2.0))
+            dpi::Size::Logical(dpi::LogicalSize::new(1.0, 2.0))
         );
 
         assert_eq!(
-            Size::new(PhysicalSize::new(1, 2)).to_logical::<f64>(1.0),
+            dpi::Size::new(dpi::PhysicalSize::new(1, 2)).to_logical::<f64>(1.0),
-            LogicalSize::new(1.0, 2.0)
+            dpi::LogicalSize::new(1.0, 2.0)
         );
         assert_eq!(
-            Size::new(PhysicalSize::new(1, 2)).to_logical::<f64>(2.0),
+            dpi::Size::new(dpi::PhysicalSize::new(1, 2)).to_logical::<f64>(2.0),
-            LogicalSize::new(0.5, 1.0)
+            dpi::LogicalSize::new(0.5, 1.0)
         );
         assert_eq!(
-            Size::new(LogicalSize::new(1.0, 2.0)).to_logical::<f64>(1.0),
+            dpi::Size::new(dpi::LogicalSize::new(1.0, 2.0)).to_logical::<f64>(1.0),
-            LogicalSize::new(1.0, 2.0)
+            dpi::LogicalSize::new(1.0, 2.0)
         );
 
         assert_eq!(
-            Size::new(PhysicalSize::new(1, 2)).to_physical::<u32>(1.0),
+            dpi::Size::new(dpi::PhysicalSize::new(1, 2)).to_physical::<u32>(1.0),
-            PhysicalSize::new(1, 2)
+            dpi::PhysicalSize::new(1, 2)
         );
         assert_eq!(
-            Size::new(PhysicalSize::new(1, 2)).to_physical::<u32>(2.0),
+            dpi::Size::new(dpi::PhysicalSize::new(1, 2)).to_physical::<u32>(2.0),
-            PhysicalSize::new(1, 2)
+            dpi::PhysicalSize::new(1, 2)
         );
         assert_eq!(
-            Size::new(LogicalSize::new(1.0, 2.0)).to_physical::<u32>(1.0),
+            dpi::Size::new(dpi::LogicalSize::new(1.0, 2.0)).to_physical::<u32>(1.0),
-            PhysicalSize::new(1, 2)
+            dpi::PhysicalSize::new(1, 2)
         );
         assert_eq!(
-            Size::new(LogicalSize::new(1.0, 2.0)).to_physical::<u32>(2.0),
+            dpi::Size::new(dpi::LogicalSize::new(1.0, 2.0)).to_physical::<u32>(2.0),
-            PhysicalSize::new(2, 4)
+            dpi::PhysicalSize::new(2, 4)
         );
 
-        let small = Size::Physical((1, 2).into());
+        let small = dpi::Size::Physical((1, 2).into());
-        let medium = Size::Logical((3, 4).into());
+        let medium = dpi::Size::Logical((3, 4).into());
-        let medium_physical = Size::new(medium.to_physical::<u32>(1.0));
+        let medium_physical = dpi::Size::new(medium.to_physical::<u32>(1.0));
-        let large = Size::Physical((5, 6).into());
+        let large = dpi::Size::Physical((5, 6).into());
-        assert_eq!(Size::clamp(medium, small, large, 1.0), medium_physical);
+        assert_eq!(dpi::Size::clamp(medium, small, large, 1.0), medium_physical);
-        assert_eq!(Size::clamp(small, medium, large, 1.0), medium_physical);
+        assert_eq!(dpi::Size::clamp(small, medium, large, 1.0), medium_physical);
-        assert_eq!(Size::clamp(large, small, medium, 1.0), medium_physical);
+        assert_eq!(dpi::Size::clamp(large, small, medium, 1.0), medium_physical);
     }
 
     #[test]
     fn test_position() {
         assert_eq!(
-            Position::new(PhysicalPosition::new(1, 2)),
+            dpi::Position::new(dpi::PhysicalPosition::new(1, 2)),
-            Position::Physical(PhysicalPosition::new(1, 2))
+            dpi::Position::Physical(dpi::PhysicalPosition::new(1, 2))
         );
         assert_eq!(
-            Position::new(LogicalPosition::new(1.0, 2.0)),
+            dpi::Position::new(dpi::LogicalPosition::new(1.0, 2.0)),
-            Position::Logical(LogicalPosition::new(1.0, 2.0))
+            dpi::Position::Logical(dpi::LogicalPosition::new(1.0, 2.0))
         );
 
         assert_eq!(
-            Position::new(PhysicalPosition::new(1, 2)).to_logical::<f64>(1.0),
+            dpi::Position::new(dpi::PhysicalPosition::new(1, 2)).to_logical::<f64>(1.0),
-            LogicalPosition::new(1.0, 2.0)
+            dpi::LogicalPosition::new(1.0, 2.0)
         );
         assert_eq!(
-            Position::new(PhysicalPosition::new(1, 2)).to_logical::<f64>(2.0),
+            dpi::Position::new(dpi::PhysicalPosition::new(1, 2)).to_logical::<f64>(2.0),
-            LogicalPosition::new(0.5, 1.0)
+            dpi::LogicalPosition::new(0.5, 1.0)
         );
         assert_eq!(
-            Position::new(LogicalPosition::new(1.0, 2.0)).to_logical::<f64>(1.0),
+            dpi::Position::new(dpi::LogicalPosition::new(1.0, 2.0)).to_logical::<f64>(1.0),
-            LogicalPosition::new(1.0, 2.0)
+            dpi::LogicalPosition::new(1.0, 2.0)
         );
 
         assert_eq!(
-            Position::new(PhysicalPosition::new(1, 2)).to_physical::<u32>(1.0),
+            dpi::Position::new(dpi::PhysicalPosition::new(1, 2)).to_physical::<u32>(1.0),
-            PhysicalPosition::new(1, 2)
+            dpi::PhysicalPosition::new(1, 2)
         );
         assert_eq!(
-            Position::new(PhysicalPosition::new(1, 2)).to_physical::<u32>(2.0),
+            dpi::Position::new(dpi::PhysicalPosition::new(1, 2)).to_physical::<u32>(2.0),
-            PhysicalPosition::new(1, 2)
+            dpi::PhysicalPosition::new(1, 2)
         );
         assert_eq!(
-            Position::new(LogicalPosition::new(1.0, 2.0)).to_physical::<u32>(1.0),
+            dpi::Position::new(dpi::LogicalPosition::new(1.0, 2.0)).to_physical::<u32>(1.0),
-            PhysicalPosition::new(1, 2)
+            dpi::PhysicalPosition::new(1, 2)
         );
         assert_eq!(
-            Position::new(LogicalPosition::new(1.0, 2.0)).to_physical::<u32>(2.0),
+            dpi::Position::new(dpi::LogicalPosition::new(1.0, 2.0)).to_physical::<u32>(2.0),
-            PhysicalPosition::new(2, 4)
+            dpi::PhysicalPosition::new(2, 4)
         );
     }
 
     // Eat coverage for the Debug impls et al
     #[test]
     fn ensure_attrs_do_not_panic() {
-        let _ = format!("{:?}", LogicalPosition::<u32>::default().clone());
+        let _ = format!("{:?}", dpi::LogicalPosition::<u32>::default().clone());
-        HashSet::new().insert(LogicalPosition::<u32>::default());
+        HashSet::new().insert(dpi::LogicalPosition::<u32>::default());
 
-        let _ = format!("{:?}", PhysicalPosition::<u32>::default().clone());
+        let _ = format!("{:?}", dpi::PhysicalPosition::<u32>::default().clone());
-        HashSet::new().insert(PhysicalPosition::<u32>::default());
+        HashSet::new().insert(dpi::PhysicalPosition::<u32>::default());
 
-        let _ = format!("{:?}", LogicalSize::<u32>::default().clone());
+        let _ = format!("{:?}", dpi::LogicalSize::<u32>::default().clone());
-        HashSet::new().insert(LogicalSize::<u32>::default());
+        HashSet::new().insert(dpi::LogicalSize::<u32>::default());
 
-        let _ = format!("{:?}", PhysicalSize::<u32>::default().clone());
+        let _ = format!("{:?}", dpi::PhysicalSize::<u32>::default().clone());
-        HashSet::new().insert(PhysicalSize::<u32>::default());
+        HashSet::new().insert(dpi::PhysicalSize::<u32>::default());
 
-        let _ = format!("{:?}", Size::Physical((1, 2).into()).clone());
+        let _ = format!("{:?}", dpi::Size::Physical((1, 2).into()).clone());
-        let _ = format!("{:?}", Position::Physical((1, 2).into()).clone());
+        let _ = format!("{:?}", dpi::Position::Physical((1, 2).into()).clone());
     }
 }

src/event.rs

@@ -309,7 +309,7 @@ pub enum WindowEvent {
     /// The activation token was delivered back and now could be used.
     ///
     #[cfg_attr(
-        not(any(x11_platform, wayland_platform)),
+        not(any(x11_platform, wayland_platfrom)),
         allow(rustdoc::broken_intra_doc_links)
     )]
     /// Delivered in response to [`request_activation_token`].
@@ -473,7 +473,7 @@ pub enum WindowEvent {
     /// The event is general enough that its generating gesture is allowed to vary
     /// across platforms. It could also be generated by another device.
     ///
-    /// Unfortunately, neither [Windows](https://support.microsoft.com/en-us/windows/touch-gestures-for-windows-a9d28305-4818-a5df-4e2b-e5590f850741)
+    /// Unfortunatly, neither [Windows](https://support.microsoft.com/en-us/windows/touch-gestures-for-windows-a9d28305-4818-a5df-4e2b-e5590f850741)
     /// nor [Wayland](https://wayland.freedesktop.org/libinput/doc/latest/gestures.html)
     /// support this gesture or any other gesture with the same effect.
     ///
@@ -539,7 +539,7 @@ pub enum WindowEvent {
     /// To update the window size, use the provided [`InnerSizeWriter`] handle. By default, the window is
     /// resized to the value suggested by the OS, but it can be changed to any value.
     ///
-    /// For more information about DPI in general, see the [`dpi`] crate.
+    /// For more information about DPI in general, see the [`dpi`](crate::dpi) module.
     ScaleFactorChanged {
         scale_factor: f64,
         /// Handle to update inner size during scale changes.
@@ -1112,7 +1112,7 @@ pub enum MouseScrollDelta {
     PixelDelta(PhysicalPosition<f64>),
 }
 
-/// Handle to synchronously change the size of the window from the
+/// Handle to synchroniously change the size of the window from the
 /// [`WindowEvent`].
 #[derive(Debug, Clone)]
 pub struct InnerSizeWriter {
@@ -1125,7 +1125,7 @@ impl InnerSizeWriter {
         Self { new_inner_size }
     }
 
-    /// Try to request inner size which will be set synchronously on the window.
+    /// Try to request inner size which will be set synchroniously on the window.
     pub fn request_inner_size(
         &mut self,
         new_inner_size: PhysicalSize<u32>,

src/event_loop.rs

@@ -8,6 +8,7 @@
 //! See the root-level documentation for information on how to create and use an event loop to
 //! handle events.
 use std::marker::PhantomData;
+use std::ops::Deref;
 #[cfg(any(x11_platform, wayland_platform))]
 use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
@@ -18,8 +19,7 @@ use std::time::{Duration, Instant};
 #[cfg(web_platform)]
 use web_time::{Duration, Instant};
 
-use crate::error::{EventLoopError, OsError};
+use crate::error::EventLoopError;
-use crate::window::{CustomCursor, CustomCursorSource, Window, WindowAttributes};
 use crate::{event::Event, monitor::MonitorHandle, platform_impl};
 
 /// Provides a way to retrieve events from the system and from the windows that were registered to
@@ -45,9 +45,11 @@ pub struct EventLoop<T: 'static> {
 /// Target that associates windows with an [`EventLoop`].
 ///
 /// This type exists to allow you to create new windows while Winit executes
-/// your callback.
+/// your callback. [`EventLoop`] will coerce into this type (`impl<T> Deref for
-pub struct ActiveEventLoop {
+/// EventLoop<T>`), so functions that take this as a parameter can also take
-    pub(crate) p: platform_impl::ActiveEventLoop,
+/// `&EventLoop`.
+pub struct EventLoopWindowTarget {
+    pub(crate) p: platform_impl::EventLoopWindowTarget,
     pub(crate) _marker: PhantomData<*mut ()>, // Not Send nor Sync
 }
 
@@ -133,13 +135,13 @@ impl<T> fmt::Debug for EventLoop<T> {
     }
 }
 
-impl fmt::Debug for ActiveEventLoop {
+impl fmt::Debug for EventLoopWindowTarget {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.pad("ActiveEventLoop { .. }")
+        f.pad("EventLoopWindowTarget { .. }")
     }
 }
 
-/// Set through [`ActiveEventLoop::set_control_flow()`].
+/// Set through [`EventLoopWindowTarget::set_control_flow()`].
 ///
 /// Indicates the desired behavior of the event loop after [`Event::AboutToWait`] is emitted.
 ///
@@ -239,80 +241,30 @@ impl<T> EventLoop<T> {
     ///
     ///   This function won't be available with `target_feature = "exception-handling"`.
     ///
-    /// [`set_control_flow()`]: ActiveEventLoop::set_control_flow()
+    /// [`set_control_flow()`]: EventLoopWindowTarget::set_control_flow()
     /// [`run()`]: Self::run()
     /// [^1]: `EventLoopExtWebSys::spawn()` is only available on Web.
     #[inline]
     #[cfg(not(all(web_platform, target_feature = "exception-handling")))]
     pub fn run<F>(self, event_handler: F) -> Result<(), EventLoopError>
     where
-        F: FnMut(Event<T>, &ActiveEventLoop),
+        F: FnMut(Event<T>, &EventLoopWindowTarget),
     {
         self.event_loop.run(event_handler)
     }
 
-    /// Creates an [`EventLoopProxy`] that can be used to dispatch user events
+    /// Creates an [`EventLoopProxy`] that can be used to dispatch user events to the main event loop.
-    /// to the main event loop, possibly from another thread.
     pub fn create_proxy(&self) -> EventLoopProxy<T> {
         EventLoopProxy {
             event_loop_proxy: self.event_loop.create_proxy(),
         }
     }
-
-    /// Gets a persistent reference to the underlying platform display.
-    ///
-    /// See the [`OwnedDisplayHandle`] type for more information.
-    pub fn owned_display_handle(&self) -> OwnedDisplayHandle {
-        OwnedDisplayHandle {
-            platform: self.event_loop.window_target().p.owned_display_handle(),
-        }
-    }
-
-    /// Change if or when [`DeviceEvent`]s are captured.
-    ///
-    /// See [`ActiveEventLoop::listen_device_events`] for details.
-    ///
-    /// [`DeviceEvent`]: crate::event::DeviceEvent
-    pub fn listen_device_events(&self, allowed: DeviceEvents) {
-        self.event_loop
-            .window_target()
-            .p
-            .listen_device_events(allowed);
-    }
-
-    /// Sets the [`ControlFlow`].
-    pub fn set_control_flow(&self, control_flow: ControlFlow) {
-        self.event_loop
-            .window_target()
-            .p
-            .set_control_flow(control_flow)
-    }
-
-    /// Create a window.
-    ///
-    /// Creating window without event loop running often leads to improper window creation;
-    /// use [`ActiveEventLoop::create_window`] instead.
-    #[deprecated = "use `ActiveEventLoop::create_window` instead"]
-    #[inline]
-    pub fn create_window(&self, window_attributes: WindowAttributes) -> Result<Window, OsError> {
-        let window =
-            platform_impl::Window::new(&self.event_loop.window_target().p, window_attributes)?;
-        Ok(Window { window })
-    }
-
-    /// Create custom cursor.
-    pub fn create_custom_cursor(&self, custom_cursor: CustomCursorSource) -> CustomCursor {
-        self.event_loop
-            .window_target()
-            .p
-            .create_custom_cursor(custom_cursor)
-    }
 }
 
 #[cfg(feature = "rwh_06")]
 impl<T> rwh_06::HasDisplayHandle for EventLoop<T> {
     fn display_handle(&self) -> Result<rwh_06::DisplayHandle<'_>, rwh_06::HandleError> {
-        rwh_06::HasDisplayHandle::display_handle(self.event_loop.window_target())
+        rwh_06::HasDisplayHandle::display_handle(&**self)
     }
 }
 
@@ -320,7 +272,7 @@ impl<T> rwh_06::HasDisplayHandle for EventLoop<T> {
 unsafe impl<T> rwh_05::HasRawDisplayHandle for EventLoop<T> {
     /// Returns a [`rwh_05::RawDisplayHandle`] for the event loop.
     fn raw_display_handle(&self) -> rwh_05::RawDisplayHandle {
-        rwh_05::HasRawDisplayHandle::raw_display_handle(self.event_loop.window_target())
+        rwh_05::HasRawDisplayHandle::raw_display_handle(&**self)
     }
 }
 
@@ -352,26 +304,14 @@ impl<T> AsRawFd for EventLoop<T> {
     }
 }
 
-impl ActiveEventLoop {
+impl<T> Deref for EventLoop<T> {
-    /// Create the window.
+    type Target = EventLoopWindowTarget;
-    ///
+    fn deref(&self) -> &EventLoopWindowTarget {
-    /// Possible causes of error include denied permission, incompatible system, and lack of memory.
+        self.event_loop.window_target()
-    ///
-    /// ## Platform-specific
-    ///
-    /// - **Web:** The window is created but not inserted into the web page automatically. Please
-    ///   see the web platform module for more information.
-    #[inline]
-    pub fn create_window(&self, window_attributes: WindowAttributes) -> Result<Window, OsError> {
-        let window = platform_impl::Window::new(&self.p, window_attributes)?;
-        Ok(Window { window })
-    }
-
-    /// Create custom cursor.
-    pub fn create_custom_cursor(&self, custom_cursor: CustomCursorSource) -> CustomCursor {
-        self.p.create_custom_cursor(custom_cursor)
     }
+}
 
+impl EventLoopWindowTarget {
     /// Returns the list of all the monitors available on the system.
     #[inline]
     pub fn available_monitors(&self) -> impl Iterator<Item = MonitorHandle> {
@@ -446,7 +386,7 @@ impl ActiveEventLoop {
 }
 
 #[cfg(feature = "rwh_06")]
-impl rwh_06::HasDisplayHandle for ActiveEventLoop {
+impl rwh_06::HasDisplayHandle for EventLoopWindowTarget {
     fn display_handle(&self) -> Result<rwh_06::DisplayHandle<'_>, rwh_06::HandleError> {
         let raw = self.p.raw_display_handle_rwh_06()?;
         // SAFETY: The display will never be deallocated while the event loop is alive.
@@ -455,7 +395,7 @@ impl rwh_06::HasDisplayHandle for ActiveEventLoop {
 }
 
 #[cfg(feature = "rwh_05")]
-unsafe impl rwh_05::HasRawDisplayHandle for ActiveEventLoop {
+unsafe impl rwh_05::HasRawDisplayHandle for EventLoopWindowTarget {
     /// Returns a [`rwh_05::RawDisplayHandle`] for the event loop.
     fn raw_display_handle(&self) -> rwh_05::RawDisplayHandle {
         self.p.raw_display_handle_rwh_05()
@@ -466,7 +406,7 @@ unsafe impl rwh_05::HasRawDisplayHandle for ActiveEventLoop {
 ///
 /// The purpose of this type is to provide a cheaply clonable handle to the underlying
 /// display handle. This is often used by graphics APIs to connect to the underlying APIs.
-/// It is difficult to keep a handle to the [`EventLoop`] type or the [`ActiveEventLoop`]
+/// It is difficult to keep a handle to the [`EventLoop`] type or the [`EventLoopWindowTarget`]
 /// type. In contrast, this type involves no lifetimes and can be persisted for as long as
 /// needed.
 ///
@@ -572,7 +512,7 @@ pub enum DeviceEvents {
 /// This could be used to identify the async request once it's done
 /// and a specific action must be taken.
 ///
-/// One of the handling scenarios could be to maintain a working list
+/// One of the handling scenarious could be to maintain a working list
 /// containing [`AsyncRequestSerial`] and some closure associated with it.
 /// Then once event is arriving the working list is being traversed and a job
 /// executed and removed from the list.

src/keyboard.rs

@@ -20,7 +20,7 @@
 // the W3C short notice apply to the `Key` and `KeyCode` enums and their variants and the
 // documentation attached to their variants.
 
-// --------- BEGINNING OF W3C LICENSE --------------------------------------------------------------
+// --------- BEGGINING OF W3C LICENSE --------------------------------------------------------------
 //
 // License
 //
@@ -55,7 +55,7 @@
 //
 // --------- END OF W3C LICENSE --------------------------------------------------------------------
 
-// --------- BEGINNING OF W3C SHORT NOTICE ---------------------------------------------------------
+// --------- BEGGINING OF W3C SHORT NOTICE ---------------------------------------------------------
 //
 // winit: https://github.com/rust-windowing/winit
 //
@@ -744,7 +744,7 @@ pub enum KeyCode {
 /// - The `Super` variant here, is named `Meta` in the aforementioned specification. (There's
 ///   another key which the specification calls `Super`. That does not exist here.)
 /// - The `Space` variant here, can be identified by the character it generates in the
-///   specification.
+///   specificaiton.
 ///
 /// [`KeyboardEvent.key`]: https://w3c.github.io/uievents-key/
 #[non_exhaustive]
@@ -914,7 +914,7 @@ pub enum NamedKey {
     Standby,
     /// The WakeUp key. (`KEYCODE_WAKEUP`)
     WakeUp,
-    /// Initiate the multi-candidate mode.
+    /// Initate the multi-candidate mode.
     AllCandidates,
     Alphanumeric,
     /// Initiate the Code Input mode to allow characters to be entered by
@@ -1459,7 +1459,7 @@ pub enum NamedKey {
 /// This is a superset of the UI Events Specification's [`KeyboardEvent.key`] with
 /// additions:
 /// - All simple variants are wrapped under the `Named` variant
-/// - The `Unidentified` variant here, can still identify a key through it's `NativeKeyCode`.
+/// - The `Unidentified` variant here, can still identifiy a key through it's `NativeKeyCode`.
 /// - The `Dead` variant here, can specify the character which is inserted when pressing the
 ///   dead-key twice.
 ///

src/lib.rs

@@ -2,15 +2,22 @@
 //!
 //! # Building windows
 //!
-//! Before you can create a [`Window`], you first need to build an [`EventLoop`]. This is done with
+//! Before you can build a [`Window`], you first need to build an [`EventLoop`]. This is done with the
-//! the [`EventLoop::new()`] function.
+//! [`EventLoop::new()`] function.
 //!
 //! ```no_run
 //! use winit::event_loop::EventLoop;
 //! let event_loop = EventLoop::new().unwrap();
 //! ```
 //!
-//! Then you create a [`Window`] with [`create_window`].
+//! Once this is done, there are two ways to create a [`Window`]:
+//!
+//!  - Calling [`Window::new(&event_loop)`][window_new].
+//!  - Calling [`let builder = Window::builder()`][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`].
 //!
 //! # Event handling
 //!
@@ -60,6 +67,7 @@
 //! };
 //!
 //! let event_loop = EventLoop::new().unwrap();
+//! let window = Window::builder().build(&event_loop).unwrap();
 //!
 //! // ControlFlow::Poll continuously runs the event loop, even if the OS hasn't
 //! // dispatched any events. This is ideal for games and similar applications.
@@ -70,19 +78,14 @@
 //! // input, and uses significantly less power/CPU time than ControlFlow::Poll.
 //! event_loop.set_control_flow(ControlFlow::Wait);
 //!
-//! let mut window = None;
+//! event_loop.run(move |event, elwt| {
-//!
-//! event_loop.run(move |event, event_loop| {
 //!     match event {
-//!         Event::Resumed => {
-//!             window = Some(event_loop.create_window(Window::default_attributes()).unwrap());
-//!         }
 //!         Event::WindowEvent {
 //!             event: WindowEvent::CloseRequested,
 //!             ..
 //!         } => {
 //!             println!("The close button was pressed; stopping");
-//!             event_loop.exit();
+//!             elwt.exit();
 //!         },
 //!         Event::AboutToWait => {
 //!             // Application update code.
@@ -92,7 +95,7 @@
 //!             // You only need to call this if you've determined that you need to redraw in
 //!             // applications which do not always need to. Applications that redraw continuously
 //!             // can render here instead.
-//!             window.as_ref().unwrap().request_redraw();
+//!             window.request_redraw();
 //!         },
 //!         Event::WindowEvent {
 //!             event: WindowEvent::RedrawRequested,
@@ -123,54 +126,19 @@
 //! Note that many platforms will display garbage data in the window's client area if the
 //! application doesn't render anything to the window by the time the desktop compositor is ready to
 //! display the window to the user. If you notice this happening, you should create the window with
-//! [`visible` set to `false`](crate::window::WindowAttributes::with_visible) and explicitly make the
+//! [`visible` set to `false`](crate::window::WindowBuilder::with_visible) and explicitly make the
 //! window visible only once you're ready to render into it.
 //!
-//! # UI scaling
-//!
-//! UI scaling is important, go read the docs for the [`dpi`] crate for an
-//! introduction.
-//!
-//! 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.
-//!
-//! Winit will dispatch a [`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 allows you 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`] event, its scale factor
-//! can be found by calling [`window.scale_factor()`].
-//!
-//! [`ScaleFactorChanged`]: event::WindowEvent::ScaleFactorChanged
-//! [`window.scale_factor()`]: window::Window::scale_factor
-//!
-//! # Cargo Features
-//!
-//! Winit provides the following Cargo features:
-//!
-//! * `x11` (enabled by default): On Unix platforms, enables the X11 backend.
-//! * `wayland` (enabled by default): On Unix platforms, enables the Wayland
-//!   backend.
-//! * `rwh_04`: Implement `raw-window-handle v0.4` traits.
-//! * `rwh_05`: Implement `raw-window-handle v0.5` traits.
-//! * `rwh_06`: Implement `raw-window-handle v0.6` traits.
-//! * `serde`: Enables serialization/deserialization of certain types with
-//!   [Serde](https://crates.io/crates/serde).
-//! * `mint`: Enables mint (math interoperability standard types) conversions.
-//!
-//! See the [`platform`] module for documentation on platform-specific cargo
-//! features.
-//!
 //! [`EventLoop`]: event_loop::EventLoop
 //! [`EventLoop::new()`]: event_loop::EventLoop::new
 //! [`EventLoop::run()`]: event_loop::EventLoop::run
-//! [`exit()`]: event_loop::ActiveEventLoop::exit
+//! [`exit()`]: event_loop::EventLoopWindowTarget::exit
 //! [`Window`]: window::Window
 //! [`WindowId`]: window::WindowId
-//! [`WindowAttributes`]: window::WindowAttributes
+//! [`WindowBuilder`]: window::WindowBuilder
 //! [window_new]: window::Window::new
-//! [`create_window`]: event_loop::ActiveEventLoop::create_window
+//! [window_builder_new]: window::Window::builder
+//! [window_builder_build]: window::WindowBuilder::build
 //! [`Window::id()`]: window::Window::id
 //! [`WindowEvent`]: event::WindowEvent
 //! [`DeviceEvent`]: event::DeviceEvent
@@ -184,7 +152,7 @@
 #![deny(rustdoc::broken_intra_doc_links)]
 #![deny(clippy::all)]
 #![deny(unsafe_op_in_unsafe_fn)]
-#![cfg_attr(clippy, deny(warnings))]
+#![cfg_attr(feature = "cargo-clippy", deny(warnings))]
 // Doc feature labels can be tested locally by running RUSTDOCFLAGS="--cfg=docsrs" cargo +nightly doc
 #![cfg_attr(
     docsrs,
@@ -196,10 +164,7 @@
 #[cfg(feature = "rwh_06")]
 pub use rwh_06 as raw_window_handle;
 
-// Re-export DPI types so that users don't have to put it in Cargo.toml.
+pub mod dpi;
-#[doc(inline)]
-pub use dpi;
-
 #[macro_use]
 pub mod error;
 mod cursor;
@@ -209,7 +174,6 @@ mod icon;
 pub mod keyboard;
 pub mod monitor;
 mod platform_impl;
-mod utils;
 pub mod window;
 
 pub mod platform;

src/monitor.rs

@@ -3,7 +3,7 @@
 //! If you want to get basic information about a monitor, you can use the
 //! [`MonitorHandle`] type. This is retrieved from one of the following
 //! methods, which return an iterator of [`MonitorHandle`]:
-//! - [`ActiveEventLoop::available_monitors`](crate::event_loop::ActiveEventLoop::available_monitors).
+//! - [`EventLoopWindowTarget::available_monitors`](crate::event_loop::EventLoopWindowTarget::available_monitors).
 //! - [`Window::available_monitors`](crate::window::Window::available_monitors).
 use crate::{
     dpi::{PhysicalPosition, PhysicalSize},
@@ -145,7 +145,7 @@ impl MonitorHandle {
     /// Returns the scale factor of the underlying monitor. To map logical pixels to physical
     /// pixels and vice versa, use [`Window::scale_factor`].
     ///
-    /// See the [`dpi`] module for more information.
+    /// See the [`dpi`](crate::dpi) module for more information.
     ///
     /// ## Platform-specific
     ///

src/platform/android.rs

@@ -1,72 +1,6 @@
-//! # Android
-//!
-//! The Android backend builds on (and exposes types from) the [`ndk`](https://docs.rs/ndk/) crate.
-//!
-//! Native Android applications need some form of "glue" crate that is responsible
-//! for defining the main entry point for your Rust application as well as tracking
-//! various life-cycle events and synchronizing with the main JVM thread.
-//!
-//! Winit uses the [android-activity](https://docs.rs/android-activity/) as a
-//! glue crate (prior to `0.28` it used
-//! [ndk-glue](https://github.com/rust-windowing/android-ndk-rs/tree/master/ndk-glue)).
-//!
-//! The version of the glue crate that your application depends on _must_ match the
-//! version that Winit depends on because the glue crate is responsible for your
-//! application's main entry point. If Cargo resolves multiple versions, they will
-//! clash.
-//!
-//! `winit` glue compatibility table:
-//!
-//! | winit |       ndk-glue               |
-//! | :---: | :--------------------------: |
-//! | 0.29  | `android-activity = "0.5"`   |
-//! | 0.28  | `android-activity = "0.4"`   |
-//! | 0.27  | `ndk-glue = "0.7"`           |
-//! | 0.26  | `ndk-glue = "0.5"`           |
-//! | 0.25  | `ndk-glue = "0.3"`           |
-//! | 0.24  | `ndk-glue = "0.2"`           |
-//!
-//! The recommended way to avoid a conflict with the glue version is to avoid explicitly
-//! depending on the `android-activity` crate, and instead consume the API that
-//! is re-exported by Winit under `winit::platform::android::activity::*`
-//!
-//! Running on an Android device needs a dynamic system library. Add this to Cargo.toml:
-//!
-//! ```toml
-//! [lib]
-//! name = "main"
-//! crate-type = ["cdylib"]
-//! ```
-//!
-//! All Android applications are based on an `Activity` subclass, and the
-//! `android-activity` crate is designed to support different choices for this base
-//! class. Your application _must_ specify the base class it needs via a feature flag:
-//!
-//! | Base Class       | Feature Flag      |  Notes  |
-//! | :--------------: | :---------------: | :-----: |
-//! | `NativeActivity` | `android-native-activity` | Built-in to Android - it is possible to use without compiling any Java or Kotlin code. Java or Kotlin code may be needed to subclass `NativeActivity` to access some platform features. It does not derive from the [`AndroidAppCompat`] base class.|
-//! | [`GameActivity`] | `android-game-activity`   | Derives from [`AndroidAppCompat`], a defacto standard `Activity` base class that helps support a wider range of Android versions. Requires a build system that can compile Java or Kotlin and fetch Android dependencies from a [Maven repository][agdk_jetpack] (or link with an embedded [release][agdk_releases] of [`GameActivity`]) |
-//!
-//! [`GameActivity`]: https://developer.android.com/games/agdk/game-activity
-//! [`GameTextInput`]: https://developer.android.com/games/agdk/add-support-for-text-input
-//! [`AndroidAppCompat`]: https://developer.android.com/reference/androidx/appcompat/app/AppCompatActivity
-//! [agdk_jetpack]: https://developer.android.com/jetpack/androidx/releases/games
-//! [agdk_releases]: https://developer.android.com/games/agdk/download#agdk-libraries
-//! [Gradle]: https://developer.android.com/studio/build
-//!
-//! For more details, refer to these `android-activity` [example applications](https://github.com/rust-mobile/android-activity/tree/main/examples).
-//!
-//! ## Converting from `ndk-glue` to `android-activity`
-//!
-//! If your application is currently based on `NativeActivity` via the `ndk-glue` crate and building with `cargo apk`, then the minimal changes would be:
-//! 1. Remove `ndk-glue` from your `Cargo.toml`
-//! 2. Enable the `"android-native-activity"` feature for Winit: `winit = { version = "0.29.11", features = [ "android-native-activity" ] }`
-//! 3. Add an `android_main` entrypoint (as above), instead of using the '`[ndk_glue::main]` proc macro from `ndk-macros` (optionally add a dependency on `android_logger` and initialize logging as above).
-//! 4. Pass a clone of the `AndroidApp` that your application receives to Winit when building your event loop (as shown above).
-
 use crate::{
-    event_loop::{ActiveEventLoop, EventLoop, EventLoopBuilder},
+    event_loop::{EventLoop, EventLoopBuilder, EventLoopWindowTarget},
-    window::{Window, WindowAttributes},
+    window::{Window, WindowBuilder},
 };
 
 use self::activity::{AndroidApp, ConfigurationRef, Rect};
@@ -76,8 +10,8 @@ pub trait EventLoopExtAndroid {}
 
 impl<T> EventLoopExtAndroid for EventLoop<T> {}
 
-/// Additional methods on [`ActiveEventLoop`] that are specific to Android.
+/// Additional methods on [`EventLoopWindowTarget`] that are specific to Android.
-pub trait ActiveEventLoopExtAndroid {}
+pub trait EventLoopWindowTargetExtAndroid {}
 
 /// Additional methods on [`Window`] that are specific to Android.
 pub trait WindowExtAndroid {
@@ -96,12 +30,12 @@ impl WindowExtAndroid for Window {
     }
 }
 
-impl ActiveEventLoopExtAndroid for ActiveEventLoop {}
+impl EventLoopWindowTargetExtAndroid for EventLoopWindowTarget {}
 
-/// Additional methods on [`WindowAttributes`] that are specific to Android.
+/// Additional methods on [`WindowBuilder`] that are specific to Android.
-pub trait WindowAttributesExtAndroid {}
+pub trait WindowBuilderExtAndroid {}
 
-impl WindowAttributesExtAndroid for WindowAttributes {}
+impl WindowBuilderExtAndroid for WindowBuilder {}
 
 pub trait EventLoopBuilderExtAndroid {
     /// Associates the `AndroidApp` that was passed to `android_main()` with the event loop

src/platform/ios.rs

@@ -1,75 +1,9 @@
-//! # iOS / UIKit
-//!
-//! Winit has an OS requirement of iOS 8 or higher, and is regularly tested on
-//! iOS 9.3.
-//!
-//! iOS's main `UIApplicationMain` does some init work that's required by all
-//! UI-related code (see issue [#1705]). It is best to create your windows
-//! inside `Event::Resumed`.
-//!
-//! [#1705]: https://github.com/rust-windowing/winit/issues/1705
-//!
-//! ## Building app
-//!
-//! To build ios app you will need rustc built for this targets:
-//!
-//!  - armv7-apple-ios
-//!  - armv7s-apple-ios
-//!  - i386-apple-ios
-//!  - aarch64-apple-ios
-//!  - x86_64-apple-ios
-//!
-//! Then
-//!
-//! ```
-//! cargo build --target=...
-//! ```
-//! The simplest way to integrate your app into xcode environment is to build it
-//! as a static library. Wrap your main function and export it.
-//!
-//! ```rust, ignore
-//! #[no_mangle]
-//! pub extern fn start_winit_app() {
-//!     start_inner()
-//! }
-//!
-//! fn start_inner() {
-//!    ...
-//! }
-//! ```
-//!
-//! Compile project and then drag resulting .a into Xcode project. Add winit.h to xcode.
-//!
-//! ```ignore
-//! void start_winit_app();
-//! ```
-//!
-//! Use start_winit_app inside your xcode's main function.
-//!
-//!
-//! ## App lifecycle and events
-//!
-//! iOS environment is very different from other platforms and you must be very
-//! careful with it's events. Familiarize yourself with
-//! [app lifecycle](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIApplicationDelegate_Protocol/).
-//!
-//! This is how those event are represented in winit:
-//!
-//!  - applicationDidBecomeActive is Resumed
-//!  - applicationWillResignActive is Suspended
-//!  - applicationWillTerminate is LoopExiting
-//!
-//! Keep in mind that after LoopExiting event is received every attempt to draw with
-//! opengl will result in segfault.
-//!
-//! Also note that app may not receive the LoopExiting event if suspended; it might be SIGKILL'ed.
-
 use std::os::raw::c_void;
 
 use crate::{
     event_loop::EventLoop,
     monitor::{MonitorHandle, VideoModeHandle},
-    window::{Window, WindowAttributes},
+    window::{Window, WindowBuilder},
 };
 
 /// Additional methods on [`EventLoop`] that are specific to iOS.
@@ -225,8 +159,8 @@ impl WindowExtIOS for Window {
     }
 }
 
-/// Additional methods on [`WindowAttributes`] that are specific to iOS.
+/// Additional methods on [`WindowBuilder`] that are specific to iOS.
-pub trait WindowAttributesExtIOS {
+pub trait WindowBuilderExtIOS {
     /// Sets the [`contentScaleFactor`] of the underlying [`UIWindow`] to `scale_factor`.
     ///
     /// The default value is device dependent, and it's recommended GLES or Metal applications set
@@ -280,41 +214,42 @@ pub trait WindowAttributesExtIOS {
     fn with_preferred_status_bar_style(self, status_bar_style: StatusBarStyle) -> Self;
 }
 
-impl WindowAttributesExtIOS for WindowAttributes {
+impl WindowBuilderExtIOS for WindowBuilder {
     #[inline]
     fn with_scale_factor(mut self, scale_factor: f64) -> Self {
-        self.platform_specific.scale_factor = Some(scale_factor);
+        self.window.platform_specific.scale_factor = Some(scale_factor);
         self
     }
 
     #[inline]
     fn with_valid_orientations(mut self, valid_orientations: ValidOrientations) -> Self {
-        self.platform_specific.valid_orientations = valid_orientations;
+        self.window.platform_specific.valid_orientations = valid_orientations;
         self
     }
 
     #[inline]
     fn with_prefers_home_indicator_hidden(mut self, hidden: bool) -> Self {
-        self.platform_specific.prefers_home_indicator_hidden = hidden;
+        self.window.platform_specific.prefers_home_indicator_hidden = hidden;
         self
     }
 
     #[inline]
     fn with_preferred_screen_edges_deferring_system_gestures(mut self, edges: ScreenEdge) -> Self {
-        self.platform_specific
+        self.window
+            .platform_specific
             .preferred_screen_edges_deferring_system_gestures = edges;
         self
     }
 
     #[inline]
     fn with_prefers_status_bar_hidden(mut self, hidden: bool) -> Self {
-        self.platform_specific.prefers_status_bar_hidden = hidden;
+        self.window.platform_specific.prefers_status_bar_hidden = hidden;
         self
     }
 
     #[inline]
     fn with_preferred_status_bar_style(mut self, status_bar_style: StatusBarStyle) -> Self {
-        self.platform_specific.preferred_status_bar_style = status_bar_style;
+        self.window.platform_specific.preferred_status_bar_style = status_bar_style;
         self
     }
 }

src/platform/macos.rs

@@ -1,28 +1,12 @@
-//! # macOS / AppKit
-//!
-//! Winit has an OS requirement of macOS 10.11 or higher (same as Rust
-//! itself), and is regularly tested on macOS 10.14.
-//!
-//! A lot of functionality expects the application to be ready before you
-//! start doing anything; this includes creating windows, fetching monitors,
-//! drawing, and so on, see issues [#2238], [#2051] and [#2087].
-//!
-//! If you encounter problems, you should try doing your initialization inside
-//! `Event::Resumed`.
-//!
-//! [#2238]: https://github.com/rust-windowing/winit/issues/2238
-//! [#2051]: https://github.com/rust-windowing/winit/issues/2051
-//! [#2087]: https://github.com/rust-windowing/winit/issues/2087
-
 use std::os::raw::c_void;
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
 use crate::{
-    event_loop::{ActiveEventLoop, EventLoopBuilder},
+    event_loop::{EventLoopBuilder, EventLoopWindowTarget},
     monitor::MonitorHandle,
-    window::{Window, WindowAttributes},
+    window::{Window, WindowBuilder},
 };
 
 /// Additional methods on [`Window`] that are specific to MacOS.
@@ -190,15 +174,15 @@ pub enum ActivationPolicy {
     Prohibited,
 }
 
-/// Additional methods on [`WindowAttributes`] that are specific to MacOS.
+/// Additional methods on [`WindowBuilder`] that are specific to MacOS.
 ///
-/// **Note:** Properties dealing with the titlebar will be overwritten by the [`WindowAttributes::with_decorations`] method:
+/// **Note:** Properties dealing with the titlebar will be overwritten by the [`WindowBuilder::with_decorations`] method:
 /// - `with_titlebar_transparent`
 /// - `with_title_hidden`
 /// - `with_titlebar_hidden`
 /// - `with_titlebar_buttons_hidden`
 /// - `with_fullsize_content_view`
-pub trait WindowAttributesExtMacOS {
+pub trait WindowBuilderExtMacOS {
     /// Enables click-and-drag behavior for the entire window, not just the titlebar.
     fn with_movable_by_window_background(self, movable_by_window_background: bool) -> Self;
     /// Makes the titlebar transparent and allows the content to appear behind it.
@@ -225,64 +209,65 @@ pub trait WindowAttributesExtMacOS {
     fn with_option_as_alt(self, option_as_alt: OptionAsAlt) -> Self;
 }
 
-impl WindowAttributesExtMacOS for WindowAttributes {
+impl WindowBuilderExtMacOS for WindowBuilder {
     #[inline]
     fn with_movable_by_window_background(mut self, movable_by_window_background: bool) -> Self {
-        self.platform_specific.movable_by_window_background = movable_by_window_background;
+        self.window.platform_specific.movable_by_window_background = movable_by_window_background;
         self
     }
 
     #[inline]
     fn with_titlebar_transparent(mut self, titlebar_transparent: bool) -> Self {
-        self.platform_specific.titlebar_transparent = titlebar_transparent;
+        self.window.platform_specific.titlebar_transparent = titlebar_transparent;
         self
     }
 
     #[inline]
     fn with_titlebar_hidden(mut self, titlebar_hidden: bool) -> Self {
-        self.platform_specific.titlebar_hidden = titlebar_hidden;
+        self.window.platform_specific.titlebar_hidden = titlebar_hidden;
         self
     }
 
     #[inline]
     fn with_titlebar_buttons_hidden(mut self, titlebar_buttons_hidden: bool) -> Self {
-        self.platform_specific.titlebar_buttons_hidden = titlebar_buttons_hidden;
+        self.window.platform_specific.titlebar_buttons_hidden = titlebar_buttons_hidden;
         self
     }
 
     #[inline]
     fn with_title_hidden(mut self, title_hidden: bool) -> Self {
-        self.platform_specific.title_hidden = title_hidden;
+        self.window.platform_specific.title_hidden = title_hidden;
         self
     }
 
     #[inline]
     fn with_fullsize_content_view(mut self, fullsize_content_view: bool) -> Self {
-        self.platform_specific.fullsize_content_view = fullsize_content_view;
+        self.window.platform_specific.fullsize_content_view = fullsize_content_view;
         self
     }
 
     #[inline]
     fn with_disallow_hidpi(mut self, disallow_hidpi: bool) -> Self {
-        self.platform_specific.disallow_hidpi = disallow_hidpi;
+        self.window.platform_specific.disallow_hidpi = disallow_hidpi;
         self
     }
 
     #[inline]
     fn with_has_shadow(mut self, has_shadow: bool) -> Self {
-        self.platform_specific.has_shadow = has_shadow;
+        self.window.platform_specific.has_shadow = has_shadow;
         self
     }
 
     #[inline]
     fn with_accepts_first_mouse(mut self, accepts_first_mouse: bool) -> Self {
-        self.platform_specific.accepts_first_mouse = accepts_first_mouse;
+        self.window.platform_specific.accepts_first_mouse = accepts_first_mouse;
         self
     }
 
     #[inline]
     fn with_tabbing_identifier(mut self, tabbing_identifier: &str) -> Self {
-        self.platform_specific
+        self.window
+            .platform_specific
             .tabbing_identifier
             .replace(tabbing_identifier.to_string());
         self
@@ -290,7 +275,7 @@ impl WindowAttributesExtMacOS for WindowAttributes {
 
     #[inline]
     fn with_option_as_alt(mut self, option_as_alt: OptionAsAlt) -> Self {
-        self.platform_specific.option_as_alt = option_as_alt;
+        self.window.platform_specific.option_as_alt = option_as_alt;
         self
     }
 }
@@ -390,8 +375,8 @@ impl MonitorHandleExtMacOS for MonitorHandle {
     }
 }
 
-/// Additional methods on [`ActiveEventLoop`] that are specific to macOS.
+/// Additional methods on [`EventLoopWindowTarget`] that are specific to macOS.
-pub trait ActiveEventLoopExtMacOS {
+pub trait EventLoopWindowTargetExtMacOS {
     /// Hide the entire application. In most applications this is typically triggered with Command-H.
     fn hide_application(&self);
     /// Hide the other applications. In most applications this is typically triggered with Command+Option-H.
@@ -404,7 +389,7 @@ pub trait ActiveEventLoopExtMacOS {
     fn allows_automatic_window_tabbing(&self) -> bool;
 }
 
-impl ActiveEventLoopExtMacOS for ActiveEventLoop {
+impl EventLoopWindowTargetExtMacOS for EventLoopWindowTarget {
     fn hide_application(&self) {
         self.p.hide_application()
     }

src/platform/orbital.rs

@@ -1,6 +1 @@
-//! # Orbital / Redox OS
-//!
-//! Redox OS has some functionality not yet present that will be implemented
-//! when its orbital display server provides it.
-
 // There are no Orbital specific traits yet.

src/platform/pump_events.rs

@@ -2,7 +2,7 @@ use std::time::Duration;
 
 use crate::{
     event::Event,
-    event_loop::{ActiveEventLoop, EventLoop},
+    event_loop::{EventLoop, EventLoopWindowTarget},
 };
 
 /// The return status for `pump_events`
@@ -32,6 +32,68 @@ pub trait EventLoopExtPumpEvents {
     /// Passing a `timeout` of `None` means that it may wait indefinitely for new
     /// events before returning control back to the external loop.
     ///
+    /// ## Example
+    ///
+    /// ```rust,no_run
+    /// # // Copied from examples/window_pump_events.rs
+    /// # #[cfg(any(
+    /// #     windows_platform,
+    /// #     macos_platform,
+    /// #     x11_platform,
+    /// #     wayland_platform,
+    /// #     android_platform,
+    /// # ))]
+    /// fn main() -> std::process::ExitCode {
+    /// #     use std::{process::ExitCode, thread::sleep, time::Duration};
+    /// #
+    /// #     use simple_logger::SimpleLogger;
+    /// #     use winit::{
+    /// #         event::{Event, WindowEvent},
+    /// #         event_loop::EventLoop,
+    /// #         platform::pump_events::{EventLoopExtPumpEvents, PumpStatus},
+    /// #         window::Window,
+    /// #     };
+    ///     let mut event_loop = EventLoop::new().unwrap();
+    /// #
+    /// #   SimpleLogger::new().init().unwrap();
+    ///     let window = Window::builder()
+    ///         .with_title("A fantastic window!")
+    ///         .build(&event_loop)
+    ///         .unwrap();
+    ///
+    ///     'main: loop {
+    ///         let timeout = Some(Duration::ZERO);
+    ///         let status = event_loop.pump_events(timeout, |event, elwt| {
+    /// #            if let Event::WindowEvent { event, .. } = &event {
+    /// #                // Print only Window events to reduce noise
+    /// #                println!("{event:?}");
+    /// #            }
+    /// #
+    ///             match event {
+    ///                 Event::WindowEvent {
+    ///                     event: WindowEvent::CloseRequested,
+    ///                     window_id,
+    ///                 } if window_id == window.id() => elwt.exit(),
+    ///                 Event::AboutToWait => {
+    ///                     window.request_redraw();
+    ///                 }
+    ///                 _ => (),
+    ///             }
+    ///         });
+    ///         if let PumpStatus::Exit(exit_code) = status {
+    ///             break 'main ExitCode::from(exit_code as u8);
+    ///         }
+    ///
+    ///         // Sleep for 1/60 second to simulate application work
+    ///         //
+    ///         // Since `pump_events` doesn't block it will be important to
+    ///         // throttle the loop in the app somehow.
+    ///         println!("Update()");
+    ///         sleep(Duration::from_millis(16));
+    ///     }
+    /// }
+    /// ```
+    ///
     /// **Note:** This is not a portable API, and its usage involves a number of
     /// caveats and trade offs that should be considered before using this API!
     ///
@@ -75,14 +137,12 @@ pub trait EventLoopExtPumpEvents {
     /// other lifecycle events occur while the event is buffered.
     ///
     /// ## Supported Platforms
-    ///
     /// - Windows
     /// - Linux
     /// - MacOS
     /// - Android
     ///
     /// ## Unsupported Platforms
-    ///
     /// - **Web:**  This API is fundamentally incompatible with the event-based way in which
     /// Web browsers work because it's not possible to have a long-running external
     /// loop that would block the browser and there is nothing that can be
@@ -92,7 +152,6 @@ pub trait EventLoopExtPumpEvents {
     /// there's no way to support the same approach to polling as on MacOS.
     ///
     /// ## Platform-specific
-    ///
     /// - **Windows**: The implementation will use `PeekMessage` when checking for
     ///   window messages to avoid blocking your external event loop.
     ///
@@ -115,7 +174,7 @@ pub trait EventLoopExtPumpEvents {
     ///   callback.
     fn pump_events<F>(&mut self, timeout: Option<Duration>, event_handler: F) -> PumpStatus
     where
-        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop);
+        F: FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget);
 }
 
 impl<T> EventLoopExtPumpEvents for EventLoop<T> {
@@ -123,7 +182,7 @@ impl<T> EventLoopExtPumpEvents for EventLoop<T> {
 
     fn pump_events<F>(&mut self, timeout: Option<Duration>, event_handler: F) -> PumpStatus
     where
-        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop),
+        F: FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget),
     {
         self.event_loop.pump_events(timeout, event_handler)
     }

src/platform/run_on_demand.rs

@@ -1,7 +1,7 @@
 use crate::{
     error::EventLoopError,
     event::Event,
-    event_loop::{ActiveEventLoop, EventLoop},
+    event_loop::{EventLoop, EventLoopWindowTarget},
 };
 
 #[cfg(doc)]
@@ -62,11 +62,11 @@ pub trait EventLoopExtRunOnDemand {
         doc = "[^1]: `spawn()` is only available on `wasm` platforms."
     )]
     ///
-    /// [`exit()`]: ActiveEventLoop::exit()
+    /// [`exit()`]: EventLoopWindowTarget::exit()
-    /// [`set_control_flow()`]: ActiveEventLoop::set_control_flow()
+    /// [`set_control_flow()`]: EventLoopWindowTarget::set_control_flow()
     fn run_on_demand<F>(&mut self, event_handler: F) -> Result<(), EventLoopError>
     where
-        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop);
+        F: FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget);
 }
 
 impl<T> EventLoopExtRunOnDemand for EventLoop<T> {
@@ -74,14 +74,14 @@ impl<T> EventLoopExtRunOnDemand for EventLoop<T> {
 
     fn run_on_demand<F>(&mut self, event_handler: F) -> Result<(), EventLoopError>
     where
-        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop),
+        F: FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget),
     {
         self.event_loop.window_target().clear_exit();
         self.event_loop.run_on_demand(event_handler)
     }
 }
 
-impl ActiveEventLoop {
+impl EventLoopWindowTarget {
     /// Clear exit status.
     pub(crate) fn clear_exit(&self) {
         self.p.clear_exit()

src/platform/scancode.rs

@@ -9,7 +9,7 @@ use crate::keyboard::{KeyCode, PhysicalKey};
 pub trait PhysicalKeyExtScancode {
     /// The raw value of the platform-specific physical key identifier.
     ///
-    /// Returns `Some(key_id)` if the conversion was successful; returns `None` otherwise.
+    /// Returns `Some(key_id)` if the conversion was succesful; returns `None` otherwise.
     ///
     /// ## Platform-specific
     /// - **Windows:** A 16bit extended scancode

src/platform/startup_notify.rs

@@ -24,8 +24,8 @@
 use std::env;
 
 use crate::error::NotSupportedError;
-use crate::event_loop::{ActiveEventLoop, AsyncRequestSerial};
+use crate::event_loop::{AsyncRequestSerial, EventLoopWindowTarget};
-use crate::window::{ActivationToken, Window, WindowAttributes};
+use crate::window::{ActivationToken, Window, WindowBuilder};
 
 /// The variable which is used mostly on X11.
 const X11_VAR: &str = "DESKTOP_STARTUP_ID";
@@ -47,7 +47,7 @@ pub trait WindowExtStartupNotify {
     fn request_activation_token(&self) -> Result<AsyncRequestSerial, NotSupportedError>;
 }
 
-pub trait WindowAttributesExtStartupNotify {
+pub trait WindowBuilderExtStartupNotify {
     /// Use this [`ActivationToken`] during window creation.
     ///
     /// Not using such a token upon a window could make your window not gaining
@@ -55,13 +55,13 @@ pub trait WindowAttributesExtStartupNotify {
     fn with_activation_token(self, token: ActivationToken) -> Self;
 }
 
-impl EventLoopExtStartupNotify for ActiveEventLoop {
+impl EventLoopExtStartupNotify for EventLoopWindowTarget {
     fn read_token_from_env(&self) -> Option<ActivationToken> {
         match self.p {
             #[cfg(wayland_platform)]
-            crate::platform_impl::ActiveEventLoop::Wayland(_) => env::var(WAYLAND_VAR),
+            crate::platform_impl::EventLoopWindowTarget::Wayland(_) => env::var(WAYLAND_VAR),
             #[cfg(x11_platform)]
-            crate::platform_impl::ActiveEventLoop::X(_) => env::var(X11_VAR),
+            crate::platform_impl::EventLoopWindowTarget::X(_) => env::var(X11_VAR),
         }
         .ok()
         .map(ActivationToken::_new)
@@ -74,9 +74,9 @@ impl WindowExtStartupNotify for Window {
     }
 }
 
-impl WindowAttributesExtStartupNotify for WindowAttributes {
+impl WindowBuilderExtStartupNotify for WindowBuilder {
     fn with_activation_token(mut self, token: ActivationToken) -> Self {
-        self.platform_specific.activation_token = Some(token);
+        self.window.platform_specific.activation_token = Some(token);
         self
     }
 }

src/platform/wayland.rs

@@ -1,33 +1,18 @@
-//! # Wayland
-//!
-//! **Note:** Windows don't appear on Wayland until you draw/present to them.
-//!
-//! By default, Winit loads system libraries using `dlopen`. This can be
-//! disabled by disabling the `"wayland-dlopen"` cargo feature.
-//!
-//! ## Client-side decorations
-//!
-//! Winit provides client-side decorations by default, but the behaviour can
-//! be controlled with the following feature flags:
-//!
-//! * `wayland-csd-adwaita` (default).
-//! * `wayland-csd-adwaita-crossfont`.
-//! * `wayland-csd-adwaita-notitle`.
 use crate::{
-    event_loop::{ActiveEventLoop, EventLoopBuilder},
+    event_loop::{EventLoopBuilder, EventLoopWindowTarget},
     monitor::MonitorHandle,
-    window::{Window, WindowAttributes},
+    window::{Window, WindowBuilder},
 };
 
 pub use crate::window::Theme;
 
-/// Additional methods on [`ActiveEventLoop`] that are specific to Wayland.
+/// Additional methods on [`EventLoopWindowTarget`] that are specific to Wayland.
-pub trait ActiveEventLoopExtWayland {
+pub trait EventLoopWindowTargetExtWayland {
-    /// True if the [`ActiveEventLoop`] uses Wayland.
+    /// True if the [`EventLoopWindowTarget`] uses Wayland.
     fn is_wayland(&self) -> bool;
 }
 
-impl ActiveEventLoopExtWayland for ActiveEventLoop {
+impl EventLoopWindowTargetExtWayland for EventLoopWindowTarget {
     #[inline]
     fn is_wayland(&self) -> bool {
         self.p.is_wayland()
@@ -65,22 +50,22 @@ pub trait WindowExtWayland {}
 
 impl WindowExtWayland for Window {}
 
-/// Additional methods on [`WindowAttributes`] that are specific to Wayland.
+/// Additional methods on [`WindowBuilder`] that are specific to Wayland.
-pub trait WindowAttributesExtWayland {
+pub trait WindowBuilderExtWayland {
     /// Build window with the given name.
     ///
     /// The `general` name sets an application ID, which should match the `.desktop`
-    /// file distributed with your program. The `instance` is a `no-op`.
+    /// file destributed with your program. The `instance` is a `no-op`.
     ///
     /// For details about application ID conventions, see the
     /// [Desktop Entry Spec](https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#desktop-file-id)
     fn with_name(self, general: impl Into<String>, instance: impl Into<String>) -> Self;
 }
 
-impl WindowAttributesExtWayland for WindowAttributes {
+impl WindowBuilderExtWayland for WindowBuilder {
     #[inline]
     fn with_name(mut self, general: impl Into<String>, instance: impl Into<String>) -> Self {
-        self.platform_specific.name = Some(crate::platform_impl::ApplicationName::new(
+        self.window.platform_specific.name = Some(crate::platform_impl::ApplicationName::new(
             general.into(),
             instance.into(),
         ));

src/platform/web.rs

@@ -1,31 +1,12 @@
-//! # Web
+//! The web target does not automatically insert the canvas element object into the web page, to
-//!
+//! allow end users to determine how the page should be laid out. Use the [`WindowExtWebSys`] trait
-//! The officially supported browsers are Chrome, Firefox and Safari 13.1+,
+//! to retrieve the canvas from the Window. Alternatively, use the [`WindowBuilderExtWebSys`] trait
-//! though forks of these should work fine.
+//! to provide your own canvas.
-//!
-//! Winit supports compiling to the `wasm32-unknown-unknown` target with
-//! `web-sys`.
-//!
-//! On the web platform, a Winit window is backed by a `<canvas>` element. You
-//! can either [provide Winit with a `<canvas>` element][with_canvas], or
-//! [let Winit create a `<canvas>` element which you can then retrieve][get]
-//! and insert it into the DOM yourself.
-//!
-//! Currently, there is no example code using Winit on Web, see [#3473]. For
-//! information on using Rust on WebAssembly, check out the [Rust and
-//! WebAssembly book].
-//!
-//! [with_canvas]: WindowAttributesExtWebSys::with_canvas
-//! [get]: WindowExtWebSys::canvas
-//! [#3473]: https://github.com/rust-windowing/winit/issues/3473
-//! [Rust and WebAssembly book]: https://rustwasm.github.io/book/
-//!
-//! ## CSS properties
 //!
 //! It is recommended **not** to apply certain CSS properties to the canvas:
-//! - [`transform`](https://developer.mozilla.org/en-US/docs/Web/CSS/transform)
+//! - [`transform`]
-//! - [`border`](https://developer.mozilla.org/en-US/docs/Web/CSS/border)
+//! - [`border`]
-//! - [`padding`](https://developer.mozilla.org/en-US/docs/Web/CSS/padding)
+//! - [`padding`]
 //!
 //! The following APIs can't take them into account and will therefore provide inaccurate results:
 //! - [`WindowEvent::Resized`] and [`Window::(set_)inner_size()`]
@@ -35,13 +16,16 @@
 //! - [`Window::set_outer_position()`]
 //!
 //! [`WindowEvent::Resized`]: crate::event::WindowEvent::Resized
-//! [`Window::(set_)inner_size()`]: crate::window::Window::inner_size
+//! [`Window::(set_)inner_size()`]: crate::window::Window::inner_size()
 //! [`WindowEvent::Occluded`]: crate::event::WindowEvent::Occluded
 //! [`WindowEvent::CursorMoved`]: crate::event::WindowEvent::CursorMoved
 //! [`WindowEvent::CursorEntered`]: crate::event::WindowEvent::CursorEntered
 //! [`WindowEvent::CursorLeft`]: crate::event::WindowEvent::CursorLeft
 //! [`WindowEvent::Touch`]: crate::event::WindowEvent::Touch
-//! [`Window::set_outer_position()`]: crate::window::Window::set_outer_position
+//! [`Window::set_outer_position()`]: crate::window::Window::set_outer_position()
+//! [`transform`]: https://developer.mozilla.org/en-US/docs/Web/CSS/transform
+//! [`border`]: https://developer.mozilla.org/en-US/docs/Web/CSS/border
+//! [`padding`]: https://developer.mozilla.org/en-US/docs/Web/CSS/padding
 
 use std::error::Error;
 use std::fmt::{self, Display, Formatter};
@@ -53,13 +37,13 @@ use std::time::Duration;
 #[cfg(web_platform)]
 use web_sys::HtmlCanvasElement;
 
-use crate::cursor::CustomCursorSource;
+use crate::cursor::CustomCursorBuilder;
 use crate::event::Event;
-use crate::event_loop::{ActiveEventLoop, EventLoop};
+use crate::event_loop::{EventLoop, EventLoopWindowTarget};
 #[cfg(web_platform)]
 use crate::platform_impl::CustomCursorFuture as PlatformCustomCursorFuture;
-use crate::platform_impl::PlatformCustomCursorSource;
+use crate::platform_impl::{PlatformCustomCursor, PlatformCustomCursorBuilder};
-use crate::window::{CustomCursor, Window, WindowAttributes};
+use crate::window::{CustomCursor, Window, WindowBuilder};
 
 #[cfg(not(web_platform))]
 #[doc(hidden)]
@@ -101,9 +85,9 @@ impl WindowExtWebSys for Window {
     }
 }
 
-pub trait WindowAttributesExtWebSys {
+pub trait WindowBuilderExtWebSys {
     /// Pass an [`HtmlCanvasElement`] to be used for this [`Window`]. If [`None`],
-    /// [`WindowAttributes::default()`] will create one.
+    /// [`WindowBuilder::build()`] will create one.
     ///
     /// In any case, the canvas won't be automatically inserted into the web page.
     ///
@@ -135,24 +119,24 @@ pub trait WindowAttributesExtWebSys {
     fn with_append(self, append: bool) -> Self;
 }
 
-impl WindowAttributesExtWebSys for WindowAttributes {
+impl WindowBuilderExtWebSys for WindowBuilder {
     fn with_canvas(mut self, canvas: Option<HtmlCanvasElement>) -> Self {
-        self.platform_specific.set_canvas(canvas);
+        self.window.platform_specific.set_canvas(canvas);
         self
     }
 
     fn with_prevent_default(mut self, prevent_default: bool) -> Self {
-        self.platform_specific.prevent_default = prevent_default;
+        self.window.platform_specific.prevent_default = prevent_default;
         self
     }
 
     fn with_focusable(mut self, focusable: bool) -> Self {
-        self.platform_specific.focusable = focusable;
+        self.window.platform_specific.focusable = focusable;
         self
     }
 
     fn with_append(mut self, append: bool) -> Self {
-        self.platform_specific.append = append;
+        self.window.platform_specific.append = append;
         self
     }
 }
@@ -188,7 +172,7 @@ pub trait EventLoopExtWebSys {
     /// [^1]: `run()` is _not_ available on WASM when the target supports `exception-handling`.
     fn spawn<F>(self, event_handler: F)
     where
-        F: 'static + FnMut(Event<Self::UserEvent>, &ActiveEventLoop);
+        F: 'static + FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget);
 }
 
 impl<T> EventLoopExtWebSys for EventLoop<T> {
@@ -196,13 +180,13 @@ impl<T> EventLoopExtWebSys for EventLoop<T> {
 
     fn spawn<F>(self, event_handler: F)
     where
-        F: 'static + FnMut(Event<Self::UserEvent>, &ActiveEventLoop),
+        F: 'static + FnMut(Event<Self::UserEvent>, &EventLoopWindowTarget),
     {
         self.event_loop.spawn(event_handler)
     }
 }
 
-pub trait ActiveEventLoopExtWebSys {
+pub trait EventLoopWindowTargetExtWebSys {
     /// Sets the strategy for [`ControlFlow::Poll`].
     ///
     /// See [`PollStrategy`].
@@ -216,18 +200,9 @@ pub trait ActiveEventLoopExtWebSys {
     ///
     /// [`ControlFlow::Poll`]: crate::event_loop::ControlFlow::Poll
     fn poll_strategy(&self) -> PollStrategy;
-
-    /// Async version of [`ActiveEventLoop::create_custom_cursor()`] which waits until the
-    /// cursor has completely finished loading.
-    fn create_custom_cursor_async(&self, source: CustomCursorSource) -> CustomCursorFuture;
 }
 
-impl ActiveEventLoopExtWebSys for ActiveEventLoop {
+impl EventLoopWindowTargetExtWebSys for EventLoopWindowTarget {
-    #[inline]
-    fn create_custom_cursor_async(&self, source: CustomCursorSource) -> CustomCursorFuture {
-        self.p.create_custom_cursor_async(source)
-    }
-
     #[inline]
     fn set_poll_strategy(&self, strategy: PollStrategy) {
         self.p.set_poll_strategy(strategy);
@@ -274,14 +249,14 @@ pub trait CustomCursorExtWebSys {
     /// but browser support for image formats is inconsistent. Using [PNG] is recommended.
     ///
     /// [PNG]: https://en.wikipedia.org/wiki/PNG
-    fn from_url(url: String, hotspot_x: u16, hotspot_y: u16) -> CustomCursorSource;
+    fn from_url(url: String, hotspot_x: u16, hotspot_y: u16) -> CustomCursorBuilder;
 
     /// Crates a new animated cursor from multiple [`CustomCursor`]s.
     /// Supplied `cursors` can't be empty or other animations.
     fn from_animation(
         duration: Duration,
         cursors: Vec<CustomCursor>,
-    ) -> Result<CustomCursorSource, BadAnimation>;
+    ) -> Result<CustomCursorBuilder, BadAnimation>;
 }
 
 impl CustomCursorExtWebSys for CustomCursor {
@@ -289,9 +264,9 @@ impl CustomCursorExtWebSys for CustomCursor {
         self.inner.animation
     }
 
-    fn from_url(url: String, hotspot_x: u16, hotspot_y: u16) -> CustomCursorSource {
+    fn from_url(url: String, hotspot_x: u16, hotspot_y: u16) -> CustomCursorBuilder {
-        CustomCursorSource {
+        CustomCursorBuilder {
-            inner: PlatformCustomCursorSource::Url {
+            inner: PlatformCustomCursorBuilder::Url {
                 url,
                 hotspot_x,
                 hotspot_y,
@@ -302,7 +277,7 @@ impl CustomCursorExtWebSys for CustomCursor {
     fn from_animation(
         duration: Duration,
         cursors: Vec<CustomCursor>,
-    ) -> Result<CustomCursorSource, BadAnimation> {
+    ) -> Result<CustomCursorBuilder, BadAnimation> {
         if cursors.is_empty() {
             return Err(BadAnimation::Empty);
         }
@@ -311,8 +286,8 @@ impl CustomCursorExtWebSys for CustomCursor {
             return Err(BadAnimation::Animation);
         }
 
-        Ok(CustomCursorSource {
+        Ok(CustomCursorBuilder {
-            inner: PlatformCustomCursorSource::Animation { duration, cursors },
+            inner: PlatformCustomCursorBuilder::Animation { duration, cursors },
         })
     }
 }
@@ -337,11 +312,26 @@ impl fmt::Display for BadAnimation {
 
 impl Error for BadAnimation {}
 
+pub trait CustomCursorBuilderExtWebSys {
+    /// Async version of [`CustomCursorBuilder::build()`] which waits until the
+    /// cursor has completely finished loading.
+    fn build_async(self, window_target: &EventLoopWindowTarget) -> CustomCursorFuture;
+}
+
+impl CustomCursorBuilderExtWebSys for CustomCursorBuilder {
+    fn build_async(self, window_target: &EventLoopWindowTarget) -> CustomCursorFuture {
+        CustomCursorFuture(PlatformCustomCursor::build_async(
+            self.inner,
+            &window_target.p,
+        ))
+    }
+}
+
 #[cfg(not(web_platform))]
 struct PlatformCustomCursorFuture;
 
 #[derive(Debug)]
-pub struct CustomCursorFuture(pub(crate) PlatformCustomCursorFuture);
+pub struct CustomCursorFuture(PlatformCustomCursorFuture);
 
 impl Future for CustomCursorFuture {
     type Output = Result<CustomCursor, CustomCursorError>;

src/platform/windows.rs

@@ -1,7 +1,3 @@
-//! # Windows
-//!
-//! The supported OS version is Windows 7 or higher, though Windows 10 is
-//! tested regularly.
 use std::{ffi::c_void, path::Path};
 
 use crate::{
@@ -9,7 +5,7 @@ use crate::{
     event::DeviceId,
     event_loop::EventLoopBuilder,
     monitor::MonitorHandle,
-    window::{BadIcon, Icon, Window, WindowAttributes},
+    window::{BadIcon, Icon, Window, WindowBuilder},
 };
 
 /// Window Handle type used by Win32 API
@@ -202,7 +198,7 @@ pub trait WindowExtWindows {
     ///
     /// A window must be enabled before it can be activated.
     /// If an application has create a modal dialog box by disabling its owner window
-    /// (as described in [`WindowAttributesExtWindows::with_owner_window`]), the application must enable
+    /// (as described in [`WindowBuilderExtWindows::with_owner_window`]), the application must enable
     /// the owner window before destroying the dialog box.
     /// Otherwise, another window will receive the keyboard focus and be activated.
     ///
@@ -300,11 +296,11 @@ impl WindowExtWindows for Window {
     }
 }
 
-/// Additional methods on `WindowAttributes` that are specific to Windows.
+/// Additional methods on `WindowBuilder` that are specific to Windows.
 #[allow(rustdoc::broken_intra_doc_links)]
-pub trait WindowAttributesExtWindows {
+pub trait WindowBuilderExtWindows {
     /// Set an owner to the window to be created. Can be used to create a dialog box, for example.
-    /// This only works when [`WindowAttributes::with_parent_window`] isn't called or set to `None`.
+    /// This only works when [`WindowBuilder::with_parent_window`] isn't called or set to `None`.
     /// Can be used in combination with [`WindowExtWindows::set_enable(false)`](WindowExtWindows::set_enable)
     /// on the owner window to create a modal dialog box.
     ///
@@ -390,88 +386,88 @@ pub trait WindowAttributesExtWindows {
     fn with_corner_preference(self, corners: CornerPreference) -> Self;
 }
 
-impl WindowAttributesExtWindows for WindowAttributes {
+impl WindowBuilderExtWindows for WindowBuilder {
     #[inline]
     fn with_owner_window(mut self, parent: HWND) -> Self {
-        self.platform_specific.owner = Some(parent);
+        self.window.platform_specific.owner = Some(parent);
         self
     }
 
     #[inline]
     fn with_menu(mut self, menu: HMENU) -> Self {
-        self.platform_specific.menu = Some(menu);
+        self.window.platform_specific.menu = Some(menu);
         self
     }
 
     #[inline]
     fn with_taskbar_icon(mut self, taskbar_icon: Option<Icon>) -> Self {
-        self.platform_specific.taskbar_icon = taskbar_icon;
+        self.window.platform_specific.taskbar_icon = taskbar_icon;
         self
     }
 
     #[inline]
     fn with_no_redirection_bitmap(mut self, flag: bool) -> Self {
-        self.platform_specific.no_redirection_bitmap = flag;
+        self.window.platform_specific.no_redirection_bitmap = flag;
         self
     }
 
     #[inline]
     fn with_drag_and_drop(mut self, flag: bool) -> Self {
-        self.platform_specific.drag_and_drop = flag;
+        self.window.platform_specific.drag_and_drop = flag;
         self
     }
 
     #[inline]
     fn with_skip_taskbar(mut self, skip: bool) -> Self {
-        self.platform_specific.skip_taskbar = skip;
+        self.window.platform_specific.skip_taskbar = skip;
         self
     }
 
     #[inline]
     fn with_class_name<S: Into<String>>(mut self, class_name: S) -> Self {
-        self.platform_specific.class_name = class_name.into();
+        self.window.platform_specific.class_name = class_name.into();
         self
     }
 
     #[inline]
     fn with_undecorated_shadow(mut self, shadow: bool) -> Self {
-        self.platform_specific.decoration_shadow = shadow;
+        self.window.platform_specific.decoration_shadow = shadow;
         self
     }
 
     #[inline]
     fn with_system_backdrop(mut self, backdrop_type: BackdropType) -> Self {
-        self.platform_specific.backdrop_type = backdrop_type;
+        self.window.platform_specific.backdrop_type = backdrop_type;
         self
     }
 
     #[inline]
     fn with_clip_children(mut self, flag: bool) -> Self {
-        self.platform_specific.clip_children = flag;
+        self.window.platform_specific.clip_children = flag;
         self
     }
 
     #[inline]
     fn with_border_color(mut self, color: Option<Color>) -> Self {
-        self.platform_specific.border_color = Some(color.unwrap_or(Color::NONE));
+        self.window.platform_specific.border_color = Some(color.unwrap_or(Color::NONE));
         self
     }
 
     #[inline]
     fn with_title_background_color(mut self, color: Option<Color>) -> Self {
-        self.platform_specific.title_background_color = Some(color.unwrap_or(Color::NONE));
+        self.window.platform_specific.title_background_color = Some(color.unwrap_or(Color::NONE));
         self
     }
 
     #[inline]
     fn with_title_text_color(mut self, color: Color) -> Self {
-        self.platform_specific.title_text_color = Some(color);
+        self.window.platform_specific.title_text_color = Some(color);
         self
     }
 
     #[inline]
     fn with_corner_preference(mut self, corners: CornerPreference) -> Self {
-        self.platform_specific.corner_preference = Some(corners);
+        self.window.platform_specific.corner_preference = Some(corners);
         self
     }
 }

src/platform/x11.rs

@@ -1,11 +1,10 @@
-//! # X11
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
 use crate::{
-    event_loop::{ActiveEventLoop, EventLoopBuilder},
+    event_loop::{EventLoopBuilder, EventLoopWindowTarget},
     monitor::MonitorHandle,
-    window::{Window, WindowAttributes},
+    window::{Window, WindowBuilder},
 };
 
 use crate::dpi::Size;
@@ -62,7 +61,7 @@ pub enum WindowType {
 pub type XlibErrorHook =
     Box<dyn Fn(*mut std::ffi::c_void, *mut std::ffi::c_void) -> bool + Send + Sync>;
 
-/// A unique identifier for an X11 visual.
+/// A unique identifer for an X11 visual.
 pub type XVisualID = u32;
 
 /// A unique identifier for an X11 window.
@@ -70,7 +69,7 @@ pub type XWindow = u32;
 
 /// Hook to winit's xlib error handling callback.
 ///
-/// This method is provided as a safe way to handle the errors coming from X11
+/// This method is provided as a safe way to handle the errors comming from X11
 /// when using xlib in external crates, like glutin for GLX access. Trying to
 /// handle errors by speculating with `XSetErrorHandler` is [`unsafe`].
 ///
@@ -90,13 +89,13 @@ pub fn register_xlib_error_hook(hook: XlibErrorHook) {
     }
 }
 
-/// Additional methods on [`ActiveEventLoop`] that are specific to X11.
+/// Additional methods on [`EventLoopWindowTarget`] that are specific to X11.
-pub trait ActiveEventLoopExtX11 {
+pub trait EventLoopWindowTargetExtX11 {
-    /// True if the [`ActiveEventLoop`] uses X11.
+    /// True if the [`EventLoopWindowTarget`] uses X11.
     fn is_x11(&self) -> bool;
 }
 
-impl ActiveEventLoopExtX11 for ActiveEventLoop {
+impl EventLoopWindowTargetExtX11 for EventLoopWindowTarget {
     #[inline]
     fn is_x11(&self) -> bool {
         !self.p.is_wayland()
@@ -134,8 +133,8 @@ pub trait WindowExtX11 {}
 
 impl WindowExtX11 for Window {}
 
-/// Additional methods on [`WindowAttributes`] that are specific to X11.
+/// Additional methods on [`WindowBuilder`] that are specific to X11.
-pub trait WindowAttributesExtX11 {
+pub trait WindowBuilderExtX11 {
     /// Create this window with a specific X11 visual.
     fn with_x11_visual(self, visual_id: XVisualID) -> Self;
 
@@ -161,12 +160,12 @@ pub trait WindowAttributesExtX11 {
     /// ```
     /// # use winit::dpi::{LogicalSize, PhysicalSize};
     /// # use winit::window::Window;
-    /// # use winit::platform::x11::WindowAttributesExtX11;
+    /// # use winit::platform::x11::WindowBuilderExtX11;
     /// // Specify the size in logical dimensions like this:
-    /// Window::default_attributes().with_base_size(LogicalSize::new(400.0, 200.0));
+    /// Window::builder().with_base_size(LogicalSize::new(400.0, 200.0));
     ///
     /// // Or specify the size in physical dimensions like this:
-    /// Window::default_attributes().with_base_size(PhysicalSize::new(400, 200));
+    /// Window::builder().with_base_size(PhysicalSize::new(400, 200));
     /// ```
     fn with_base_size<S: Into<Size>>(self, base_size: S) -> Self;
 
@@ -176,33 +175,34 @@ pub trait WindowAttributesExtX11 {
     ///
     /// ```no_run
     /// use winit::window::Window;
-    /// use winit::event_loop::ActiveEventLoop;
+    /// use winit::platform::x11::{XWindow, WindowBuilderExtX11};
-    /// use winit::platform::x11::{XWindow, WindowAttributesExtX11};
+    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
-    /// # fn create_window(event_loop: &ActiveEventLoop) -> Result<(), Box<dyn std::error::Error>> {
+    /// let event_loop = winit::event_loop::EventLoop::new().unwrap();
     /// let parent_window_id = std::env::args().nth(1).unwrap().parse::<XWindow>()?;
-    /// let window_attributes = Window::default_attributes().with_embed_parent_window(parent_window_id);
+    /// let window = Window::builder()
-    /// let window = event_loop.create_window(window_attributes)?;
+    ///     .with_embed_parent_window(parent_window_id)
+    ///     .build(&event_loop)?;
     /// # Ok(()) }
     /// ```
     fn with_embed_parent_window(self, parent_window_id: XWindow) -> Self;
 }
 
-impl WindowAttributesExtX11 for WindowAttributes {
+impl WindowBuilderExtX11 for WindowBuilder {
     #[inline]
     fn with_x11_visual(mut self, visual_id: XVisualID) -> Self {
-        self.platform_specific.x11.visual_id = Some(visual_id);
+        self.window.platform_specific.x11.visual_id = Some(visual_id);
         self
     }
 
     #[inline]
     fn with_x11_screen(mut self, screen_id: i32) -> Self {
-        self.platform_specific.x11.screen_id = Some(screen_id);
+        self.window.platform_specific.x11.screen_id = Some(screen_id);
         self
     }
 
     #[inline]
     fn with_name(mut self, general: impl Into<String>, instance: impl Into<String>) -> Self {
-        self.platform_specific.name = Some(crate::platform_impl::ApplicationName::new(
+        self.window.platform_specific.name = Some(crate::platform_impl::ApplicationName::new(
             general.into(),
             instance.into(),
         ));
@@ -211,25 +211,25 @@ impl WindowAttributesExtX11 for WindowAttributes {
 
     #[inline]
     fn with_override_redirect(mut self, override_redirect: bool) -> Self {
-        self.platform_specific.x11.override_redirect = override_redirect;
+        self.window.platform_specific.x11.override_redirect = override_redirect;
         self
     }
 
     #[inline]
     fn with_x11_window_type(mut self, x11_window_types: Vec<WindowType>) -> Self {
-        self.platform_specific.x11.x11_window_types = x11_window_types;
+        self.window.platform_specific.x11.x11_window_types = x11_window_types;
         self
     }
 
     #[inline]
     fn with_base_size<S: Into<Size>>(mut self, base_size: S) -> Self {
-        self.platform_specific.x11.base_size = Some(base_size.into());
+        self.window.platform_specific.x11.base_size = Some(base_size.into());
         self
     }
 
     #[inline]
     fn with_embed_parent_window(mut self, parent_window_id: XWindow) -> Self {
-        self.platform_specific.x11.embed_window = Some(parent_window_id);
+        self.window.platform_specific.x11.embed_window = Some(parent_window_id);
         self
     }
 }

src/platform_impl/android/mod.rs

@@ -7,7 +7,7 @@ use std::{
     marker::PhantomData,
     sync::{
         atomic::{AtomicBool, Ordering},
-        mpsc, Arc, Mutex,
+        mpsc, Arc, Mutex, RwLock,
     },
     time::{Duration, Instant},
 };
@@ -17,28 +17,24 @@ use android_activity::{
     AndroidApp, AndroidAppWaker, ConfigurationRef, InputStatus, MainEvent, Rect,
 };
 use log::{debug, trace, warn};
+use once_cell::sync::Lazy;
 
 use crate::{
     cursor::Cursor,
     dpi::{PhysicalPosition, PhysicalSize, Position, Size},
     error,
     event::{self, Force, InnerSizeWriter, StartCause},
-    event_loop::{self, ActiveEventLoop as RootAEL, ControlFlow, DeviceEvents},
+    event_loop::{self, ControlFlow, DeviceEvents, EventLoopWindowTarget as RootELW},
     platform::pump_events::PumpStatus,
     window::{
-        self, CursorGrabMode, CustomCursor, CustomCursorSource, ImePurpose, ResizeDirection, Theme,
+        self, CursorGrabMode, ImePurpose, ResizeDirection, Theme, WindowButtons, WindowLevel,
-        WindowButtons, WindowLevel,
     },
 };
 use crate::{error::EventLoopError, platform_impl::Fullscreen};
 
 mod keycodes;
 
-pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursor;
+static HAS_FOCUS: Lazy<RwLock<bool>> = Lazy::new(|| RwLock::new(true));
-pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursorSource;
-pub(crate) use crate::icon::NoIcon as PlatformIcon;
-
-static HAS_FOCUS: AtomicBool = AtomicBool::new(true);
 
 /// Returns the minimum `Option<Duration>`, taking into account that `None`
 /// equates to an infinite timeout, not a zero timeout (so can't just use
@@ -145,7 +141,7 @@ pub struct KeyEventExtra {}
 
 pub struct EventLoop<T: 'static> {
     android_app: AndroidApp,
-    window_target: event_loop::ActiveEventLoop,
+    window_target: event_loop::EventLoopWindowTarget,
     redraw_flag: SharedFlag,
     user_events_sender: mpsc::Sender<T>,
     user_events_receiver: PeekableReceiver<T>, //must wake looper whenever something gets sent
@@ -183,8 +179,8 @@ impl<T: 'static> EventLoop<T> {
 
         Ok(Self {
             android_app: android_app.clone(),
-            window_target: event_loop::ActiveEventLoop {
+            window_target: event_loop::EventLoopWindowTarget {
-                p: ActiveEventLoop {
+                p: EventLoopWindowTarget {
                     app: android_app.clone(),
                     control_flow: Cell::new(ControlFlow::default()),
                     exit: Cell::new(false),
@@ -209,7 +205,7 @@ impl<T: 'static> EventLoop<T> {
 
     fn single_iteration<F>(&mut self, main_event: Option<MainEvent<'_>>, callback: &mut F)
     where
-        F: FnMut(event::Event<T>, &RootAEL),
+        F: FnMut(event::Event<T>, &RootELW),
     {
         trace!("Mainloop iteration");
 
@@ -235,7 +231,7 @@ impl<T: 'static> EventLoop<T> {
                     warn!("TODO: find a way to notify application of content rect change");
                 }
                 MainEvent::GainedFocus => {
-                    HAS_FOCUS.store(true, Ordering::Relaxed);
+                    *HAS_FOCUS.write().unwrap() = true;
                     callback(
                         event::Event::WindowEvent {
                             window_id: window::WindowId(WindowId),
@@ -245,7 +241,7 @@ impl<T: 'static> EventLoop<T> {
                     );
                 }
                 MainEvent::LostFocus => {
-                    HAS_FOCUS.store(false, Ordering::Relaxed);
+                    *HAS_FOCUS.write().unwrap() = false;
                     callback(
                         event::Event::WindowEvent {
                             window_id: window::WindowId(WindowId),
@@ -381,7 +377,7 @@ impl<T: 'static> EventLoop<T> {
         callback: &mut F,
     ) -> InputStatus
     where
-        F: FnMut(event::Event<T>, &RootAEL),
+        F: FnMut(event::Event<T>, &RootELW),
     {
         let mut input_status = InputStatus::Handled;
         match event {
@@ -486,14 +482,14 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(mut self, event_handler: F) -> Result<(), EventLoopError>
     where
-        F: FnMut(event::Event<T>, &event_loop::ActiveEventLoop),
+        F: FnMut(event::Event<T>, &event_loop::EventLoopWindowTarget),
     {
         self.run_on_demand(event_handler)
     }
 
     pub fn run_on_demand<F>(&mut self, mut event_handler: F) -> Result<(), EventLoopError>
     where
-        F: FnMut(event::Event<T>, &event_loop::ActiveEventLoop),
+        F: FnMut(event::Event<T>, &event_loop::EventLoopWindowTarget),
     {
         loop {
             match self.pump_events(None, &mut event_handler) {
@@ -512,7 +508,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn pump_events<F>(&mut self, timeout: Option<Duration>, mut callback: F) -> PumpStatus
     where
-        F: FnMut(event::Event<T>, &RootAEL),
+        F: FnMut(event::Event<T>, &RootELW),
     {
         if !self.loop_running {
             self.loop_running = true;
@@ -545,7 +541,7 @@ impl<T: 'static> EventLoop<T> {
 
     fn poll_events_with_timeout<F>(&mut self, mut timeout: Option<Duration>, mut callback: F)
     where
-        F: FnMut(event::Event<T>, &RootAEL),
+        F: FnMut(event::Event<T>, &RootELW),
     {
         let start = Instant::now();
 
@@ -621,7 +617,7 @@ impl<T: 'static> EventLoop<T> {
         });
     }
 
-    pub fn window_target(&self) -> &event_loop::ActiveEventLoop {
+    pub fn window_target(&self) -> &event_loop::EventLoopWindowTarget {
         &self.window_target
     }
 
@@ -665,25 +661,18 @@ impl<T> EventLoopProxy<T> {
     }
 }
 
-pub struct ActiveEventLoop {
+pub struct EventLoopWindowTarget {
     app: AndroidApp,
     control_flow: Cell<ControlFlow>,
     exit: Cell<bool>,
     redraw_requester: RedrawRequester,
 }
 
-impl ActiveEventLoop {
+impl EventLoopWindowTarget {
     pub fn primary_monitor(&self) -> Option<MonitorHandle> {
         Some(MonitorHandle::new(self.app.clone()))
     }
 
-    pub fn create_custom_cursor(&self, source: CustomCursorSource) -> CustomCursor {
-        let _ = source.inner;
-        CustomCursor {
-            inner: PlatformCustomCursor,
-        }
-    }
-
     pub fn available_monitors(&self) -> VecDeque<MonitorHandle> {
         let mut v = VecDeque::with_capacity(1);
         v.push_back(MonitorHandle::new(self.app.clone()));
@@ -784,7 +773,7 @@ impl DeviceId {
 }
 
 #[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
-pub struct PlatformSpecificWindowAttributes;
+pub struct PlatformSpecificWindowBuilderAttributes;
 
 pub(crate) struct Window {
     app: AndroidApp,
@@ -793,7 +782,7 @@ pub(crate) struct Window {
 
 impl Window {
     pub(crate) fn new(
-        el: &ActiveEventLoop,
+        el: &EventLoopWindowTarget,
         _window_attrs: window::WindowAttributes,
     ) -> Result<Self, error::OsError> {
         // FIXME this ignores requested window attributes
@@ -1045,7 +1034,7 @@ impl Window {
     pub fn set_content_protected(&self, _protected: bool) {}
 
     pub fn has_focus(&self) -> bool {
-        HAS_FOCUS.load(Ordering::Relaxed)
+        *HAS_FOCUS.read().unwrap()
     }
 
     pub fn title(&self) -> String {
@@ -1065,6 +1054,10 @@ impl Display for OsError {
     }
 }
 
+pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursor;
+pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursorBuilder;
+pub(crate) use crate::icon::NoIcon as PlatformIcon;
+
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct MonitorHandle {
     app: AndroidApp,

src/platform_impl/ios/app_delegate.rs

@@ -1,103 +0,0 @@
-use icrate::Foundation::{MainThreadMarker, NSObject, NSObjectProtocol};
-use objc2::{declare_class, mutability, ClassType, DeclaredClass};
-
-use super::app_state::{self, EventWrapper};
-use super::uikit::{UIApplication, UIWindow};
-use super::window::WinitUIWindow;
-use crate::{
-    event::{Event, WindowEvent},
-    window::WindowId as RootWindowId,
-};
-
-declare_class!(
-    pub struct AppDelegate;
-
-    unsafe impl ClassType for AppDelegate {
-        type Super = NSObject;
-        type Mutability = mutability::InteriorMutable;
-        const NAME: &'static str = "WinitApplicationDelegate";
-    }
-
-    impl DeclaredClass for AppDelegate {}
-
-    // UIApplicationDelegate protocol
-    unsafe impl AppDelegate {
-        #[method(application:didFinishLaunchingWithOptions:)]
-        fn did_finish_launching(&self, _application: &UIApplication, _: *mut NSObject) -> bool {
-            app_state::did_finish_launching(MainThreadMarker::new().unwrap());
-            true
-        }
-
-        #[method(applicationDidBecomeActive:)]
-        fn did_become_active(&self, _application: &UIApplication) {
-            let mtm = MainThreadMarker::new().unwrap();
-            app_state::handle_nonuser_event(mtm, EventWrapper::StaticEvent(Event::Resumed))
-        }
-
-        #[method(applicationWillResignActive:)]
-        fn will_resign_active(&self, _application: &UIApplication) {
-            let mtm = MainThreadMarker::new().unwrap();
-            app_state::handle_nonuser_event(mtm, EventWrapper::StaticEvent(Event::Suspended))
-        }
-
-        #[method(applicationWillEnterForeground:)]
-        fn will_enter_foreground(&self, application: &UIApplication) {
-            self.send_occluded_event_for_all_windows(application, false);
-        }
-
-        #[method(applicationDidEnterBackground:)]
-        fn did_enter_background(&self, application: &UIApplication) {
-            self.send_occluded_event_for_all_windows(application, true);
-        }
-
-        #[method(applicationWillTerminate:)]
-        fn will_terminate(&self, application: &UIApplication) {
-            let mut events = Vec::new();
-            for window in application.windows().iter() {
-                if window.is_kind_of::<WinitUIWindow>() {
-                    // SAFETY: We just checked that the window is a `winit` window
-                    let window = unsafe {
-                        let ptr: *const UIWindow = window;
-                        let ptr: *const WinitUIWindow = ptr.cast();
-                        &*ptr
-                    };
-                    events.push(EventWrapper::StaticEvent(Event::WindowEvent {
-                        window_id: RootWindowId(window.id()),
-                        event: WindowEvent::Destroyed,
-                    }));
-                }
-            }
-            let mtm = MainThreadMarker::new().unwrap();
-            app_state::handle_nonuser_events(mtm, events);
-            app_state::terminated(mtm);
-        }
-
-        #[method(applicationDidReceiveMemoryWarning:)]
-        fn did_receive_memory_warning(&self, _application: &UIApplication) {
-            let mtm = MainThreadMarker::new().unwrap();
-            app_state::handle_nonuser_event(mtm, EventWrapper::StaticEvent(Event::MemoryWarning))
-        }
-    }
-);
-
-impl AppDelegate {
-    fn send_occluded_event_for_all_windows(&self, application: &UIApplication, occluded: bool) {
-        let mut events = Vec::new();
-        for window in application.windows().iter() {
-            if window.is_kind_of::<WinitUIWindow>() {
-                // SAFETY: We just checked that the window is a `winit` window
-                let window = unsafe {
-                    let ptr: *const UIWindow = window;
-                    let ptr: *const WinitUIWindow = ptr.cast();
-                    &*ptr
-                };
-                events.push(EventWrapper::StaticEvent(Event::WindowEvent {
-                    window_id: RootWindowId(window.id()),
-                    event: WindowEvent::Occluded(occluded),
-                }));
-            }
-        }
-        let mtm = MainThreadMarker::new().unwrap();
-        app_state::handle_nonuser_events(mtm, events);
-    }
-}

src/platform_impl/ios/app_state.rs

@@ -6,7 +6,7 @@ use std::{
     fmt, mem,
     os::raw::c_void,
     ptr,
-    sync::{Arc, Mutex, OnceLock},
+    sync::{Arc, Mutex},
     time::Instant,
 };
 
@@ -22,13 +22,14 @@ use icrate::Foundation::{
 use objc2::rc::Id;
 use objc2::runtime::AnyObject;
 use objc2::{msg_send, sel};
+use once_cell::sync::Lazy;
 
 use super::uikit::UIView;
-use super::window::WinitUIWindow;
+use super::view::WinitUIWindow;
 use crate::{
     dpi::PhysicalSize,
     event::{Event, InnerSizeWriter, StartCause, WindowEvent},
-    event_loop::{ActiveEventLoop as RootActiveEventLoop, ControlFlow},
+    event_loop::{ControlFlow, EventLoopWindowTarget as RootEventLoopWindowTarget},
     window::WindowId as RootWindowId,
 };
 
@@ -49,8 +50,8 @@ pub(crate) struct HandlePendingUserEvents;
 
 pub(crate) struct EventLoopHandler {
     #[allow(clippy::type_complexity)]
-    pub(crate) handler: Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop)>,
+    pub(crate) handler: Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootEventLoopWindowTarget)>,
-    pub(crate) event_loop: RootActiveEventLoop,
+    pub(crate) event_loop: RootEventLoopWindowTarget,
 }
 
 impl fmt::Debug for EventLoopHandler {
@@ -550,7 +551,7 @@ pub fn did_finish_launching(mtm: MainThreadMarker) {
         //
         // relevant iOS log:
         // ```
-        // [ApplicationLifecycle] Windows were created before application initialization
+        // [ApplicationLifecycle] Windows were created before application initialzation
         // completed. This may result in incorrect visual appearance.
         // ```
         let screen = window.screen();
@@ -901,10 +902,10 @@ macro_rules! os_capabilities {
             os_version: NSOperatingSystemVersion,
         }
 
-        impl OSCapabilities {
+        impl From<NSOperatingSystemVersion> for OSCapabilities {
-            fn from_os_version(os_version: NSOperatingSystemVersion) -> Self {
+            fn from(os_version: NSOperatingSystemVersion) -> OSCapabilities {
                 $(let $name = meets_requirements(os_version, $major, $minor);)*
-                Self { $($name,)* os_version, }
+                OSCapabilities { $($name,)* os_version, }
             }
         }
 
@@ -949,29 +950,25 @@ fn meets_requirements(
     (version.majorVersion, version.minorVersion) >= (required_major, required_minor)
 }
 
-fn get_version() -> NSOperatingSystemVersion {
-    unsafe {
-        let process_info = NSProcessInfo::processInfo();
-        let atleast_ios_8: bool = msg_send![
-            &process_info,
-            respondsToSelector: sel!(operatingSystemVersion)
-        ];
-        // winit requires atleast iOS 8 because no one has put the time into supporting earlier os versions.
-        // Older iOS versions are increasingly difficult to test. For example, Xcode 11 does not support
-        // debugging on devices with an iOS version of less than 8. Another example, in order to use an iOS
-        // simulator older than iOS 8, you must download an older version of Xcode (<9), and at least Xcode 7
-        // has been tested to not even run on macOS 10.15 - Xcode 8 might?
-        //
-        // The minimum required iOS version is likely to grow in the future.
-        assert!(atleast_ios_8, "`winit` requires iOS version 8 or greater");
-        process_info.operatingSystemVersion()
-    }
-}
-
 pub fn os_capabilities() -> OSCapabilities {
-    // Cache the version lookup for efficiency
+    static OS_CAPABILITIES: Lazy<OSCapabilities> = Lazy::new(|| {
-    static OS_CAPABILITIES: OnceLock<OSCapabilities> = OnceLock::new();
+        let version: NSOperatingSystemVersion = unsafe {
-    OS_CAPABILITIES
+            let process_info = NSProcessInfo::processInfo();
-        .get_or_init(|| OSCapabilities::from_os_version(get_version()))
+            let atleast_ios_8: bool = msg_send![
-        .clone()
+                &process_info,
+                respondsToSelector: sel!(operatingSystemVersion)
+            ];
+            // winit requires atleast iOS 8 because no one has put the time into supporting earlier os versions.
+            // Older iOS versions are increasingly difficult to test. For example, Xcode 11 does not support
+            // debugging on devices with an iOS version of less than 8. Another example, in order to use an iOS
+            // simulator older than iOS 8, you must download an older version of Xcode (<9), and at least Xcode 7
+            // has been tested to not even run on macOS 10.15 - Xcode 8 might?
+            //
+            // The minimum required iOS version is likely to grow in the future.
+            assert!(atleast_ios_8, "`winit` requires iOS version 8 or greater");
+            process_info.operatingSystemVersion()
+        };
+        version.into()
+    });
+    OS_CAPABILITIES.clone()
 }

src/platform_impl/ios/event_loop.rs

@@ -20,33 +20,25 @@ use crate::{
     error::EventLoopError,
     event::Event,
     event_loop::{
-        ActiveEventLoop as RootActiveEventLoop, ControlFlow, DeviceEvents, EventLoopClosed,
+        ControlFlow, DeviceEvents, EventLoopClosed,
+        EventLoopWindowTarget as RootEventLoopWindowTarget,
     },
     platform::ios::Idiom,
     platform_impl::platform::app_state::{EventLoopHandler, HandlePendingUserEvents},
-    window::{CustomCursor, CustomCursorSource},
 };
 
-use super::{app_delegate::AppDelegate, uikit::UIUserInterfaceIdiom};
+use super::{app_state, monitor, view, MonitorHandle};
-use super::{app_state, monitor, MonitorHandle};
 use super::{
     app_state::AppState,
     uikit::{UIApplication, UIApplicationMain, UIDevice, UIScreen},
 };
 
 #[derive(Debug)]
-pub struct ActiveEventLoop {
+pub struct EventLoopWindowTarget {
     pub(super) mtm: MainThreadMarker,
 }
 
-impl ActiveEventLoop {
+impl EventLoopWindowTarget {
-    pub fn create_custom_cursor(&self, source: CustomCursorSource) -> CustomCursor {
-        let _ = source.inner;
-        CustomCursor {
-            inner: super::PlatformCustomCursor,
-        }
-    }
-
     pub fn available_monitors(&self) -> VecDeque<MonitorHandle> {
         monitor::uiscreens(self.mtm)
     }
@@ -84,7 +76,7 @@ impl ActiveEventLoop {
 
     pub(crate) fn exit(&self) {
         // https://developer.apple.com/library/archive/qa/qa1561/_index.html
-        // it is not possible to quit an iOS app gracefully and programmatically
+        // it is not possible to quit an iOS app gracefully and programatically
         log::warn!("`ControlFlow::Exit` ignored on iOS");
     }
 
@@ -117,9 +109,9 @@ impl OwnedDisplayHandle {
 }
 
 fn map_user_event<T: 'static>(
-    mut handler: impl FnMut(Event<T>, &RootActiveEventLoop),
+    mut handler: impl FnMut(Event<T>, &RootEventLoopWindowTarget),
     receiver: mpsc::Receiver<T>,
-) -> impl FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop) {
+) -> impl FnMut(Event<HandlePendingUserEvents>, &RootEventLoopWindowTarget) {
     move |event, window_target| match event.map_nonuser_event() {
         Ok(event) => (handler)(event, window_target),
         Err(_) => {
@@ -134,7 +126,7 @@ pub struct EventLoop<T: 'static> {
     mtm: MainThreadMarker,
     sender: Sender<T>,
     receiver: Receiver<T>,
-    window_target: RootActiveEventLoop,
+    window_target: RootEventLoopWindowTarget,
 }
 
 #[derive(Default, Debug, Copy, Clone, PartialEq, Eq, Hash)]
@@ -166,8 +158,8 @@ impl<T: 'static> EventLoop<T> {
             mtm,
             sender,
             receiver,
-            window_target: RootActiveEventLoop {
+            window_target: RootEventLoopWindowTarget {
-                p: ActiveEventLoop { mtm },
+                p: EventLoopWindowTarget { mtm },
                 _marker: PhantomData,
             },
         })
@@ -175,7 +167,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(self, handler: F) -> !
     where
-        F: FnMut(Event<T>, &RootActiveEventLoop),
+        F: FnMut(Event<T>, &RootEventLoopWindowTarget),
     {
         let application = UIApplication::shared(self.mtm);
         assert!(
@@ -189,8 +181,8 @@ impl<T: 'static> EventLoop<T> {
 
         let handler = unsafe {
             std::mem::transmute::<
-                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop)>,
+                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootEventLoopWindowTarget)>,
-                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop)>,
+                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootEventLoopWindowTarget)>,
             >(Box::new(handler))
         };
 
@@ -202,14 +194,14 @@ impl<T: 'static> EventLoop<T> {
         app_state::will_launch(self.mtm, handler);
 
         // Ensure application delegate is initialized
-        let _ = AppDelegate::class();
+        view::WinitApplicationDelegate::class();
 
         unsafe {
             UIApplicationMain(
                 0,
                 ptr::null(),
                 None,
-                Some(&NSString::from_str(AppDelegate::NAME)),
+                Some(&NSString::from_str("WinitApplicationDelegate")),
             )
         };
         unreachable!()
@@ -219,7 +211,7 @@ impl<T: 'static> EventLoop<T> {
         EventLoopProxy::new(self.sender.clone())
     }
 
-    pub fn window_target(&self) -> &RootActiveEventLoop {
+    pub fn window_target(&self) -> &RootEventLoopWindowTarget {
         &self.window_target
     }
 }
@@ -227,14 +219,7 @@ impl<T: 'static> EventLoop<T> {
 // EventLoopExtIOS
 impl<T: 'static> EventLoop<T> {
     pub fn idiom(&self) -> Idiom {
-        match UIDevice::current(self.mtm).userInterfaceIdiom() {
+        UIDevice::current(self.mtm).userInterfaceIdiom().into()
-            UIUserInterfaceIdiom::Unspecified => Idiom::Unspecified,
-            UIUserInterfaceIdiom::Phone => Idiom::Phone,
-            UIUserInterfaceIdiom::Pad => Idiom::Pad,
-            UIUserInterfaceIdiom::TV => Idiom::TV,
-            UIUserInterfaceIdiom::CarPlay => Idiom::CarPlay,
-            _ => Idiom::Unspecified,
-        }
     }
 }
 
@@ -244,7 +229,6 @@ pub struct EventLoopProxy<T> {
 }
 
 unsafe impl<T: Send> Send for EventLoopProxy<T> {}
-unsafe impl<T: Send> Sync for EventLoopProxy<T> {}
 
 impl<T> Clone for EventLoopProxy<T> {
     fn clone(&self) -> EventLoopProxy<T> {

src/platform_impl/ios/ffi.rs

@@ -0,0 +1,78 @@
+#![allow(non_camel_case_types, non_snake_case, non_upper_case_globals)]
+
+use std::convert::TryInto;
+
+use icrate::Foundation::{NSInteger, NSUInteger};
+use objc2::encode::{Encode, Encoding};
+
+use crate::platform::ios::{Idiom, ScreenEdge};
+
+#[repr(transparent)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct UIUserInterfaceIdiom(NSInteger);
+
+unsafe impl Encode for UIUserInterfaceIdiom {
+    const ENCODING: Encoding = NSInteger::ENCODING;
+}
+
+impl UIUserInterfaceIdiom {
+    pub const Unspecified: UIUserInterfaceIdiom = UIUserInterfaceIdiom(-1);
+    pub const Phone: UIUserInterfaceIdiom = UIUserInterfaceIdiom(0);
+    pub const Pad: UIUserInterfaceIdiom = UIUserInterfaceIdiom(1);
+    pub const TV: UIUserInterfaceIdiom = UIUserInterfaceIdiom(2);
+    pub const CarPlay: UIUserInterfaceIdiom = UIUserInterfaceIdiom(3);
+}
+
+impl From<Idiom> for UIUserInterfaceIdiom {
+    fn from(idiom: Idiom) -> UIUserInterfaceIdiom {
+        match idiom {
+            Idiom::Unspecified => UIUserInterfaceIdiom::Unspecified,
+            Idiom::Phone => UIUserInterfaceIdiom::Phone,
+            Idiom::Pad => UIUserInterfaceIdiom::Pad,
+            Idiom::TV => UIUserInterfaceIdiom::TV,
+            Idiom::CarPlay => UIUserInterfaceIdiom::CarPlay,
+        }
+    }
+}
+impl From<UIUserInterfaceIdiom> for Idiom {
+    fn from(ui_idiom: UIUserInterfaceIdiom) -> Idiom {
+        match ui_idiom {
+            UIUserInterfaceIdiom::Unspecified => Idiom::Unspecified,
+            UIUserInterfaceIdiom::Phone => Idiom::Phone,
+            UIUserInterfaceIdiom::Pad => Idiom::Pad,
+            UIUserInterfaceIdiom::TV => Idiom::TV,
+            UIUserInterfaceIdiom::CarPlay => Idiom::CarPlay,
+            _ => unreachable!(),
+        }
+    }
+}
+
+#[repr(transparent)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct UIRectEdge(NSUInteger);
+
+impl UIRectEdge {
+    pub(crate) const NONE: Self = Self(0);
+}
+
+unsafe impl Encode for UIRectEdge {
+    const ENCODING: Encoding = NSUInteger::ENCODING;
+}
+
+impl From<ScreenEdge> for UIRectEdge {
+    fn from(screen_edge: ScreenEdge) -> UIRectEdge {
+        assert_eq!(
+            screen_edge.bits() & !ScreenEdge::ALL.bits(),
+            0,
+            "invalid `ScreenEdge`"
+        );
+        UIRectEdge(screen_edge.bits().into())
+    }
+}
+
+impl From<UIRectEdge> for ScreenEdge {
+    fn from(ui_rect_edge: UIRectEdge) -> ScreenEdge {
+        let bits: u8 = ui_rect_edge.0.try_into().expect("invalid `UIRectEdge`");
+        ScreenEdge::from_bits(bits).expect("invalid `ScreenEdge`")
+    }
+}

src/platform_impl/ios/mod.rs

@@ -1,13 +1,69 @@
+//! iOS support
+//!
+//! # Building app
+//! To build ios app you will need rustc built for this targets:
+//!
+//!  - armv7-apple-ios
+//!  - armv7s-apple-ios
+//!  - i386-apple-ios
+//!  - aarch64-apple-ios
+//!  - x86_64-apple-ios
+//!
+//! Then
+//!
+//! ```
+//! cargo build --target=...
+//! ```
+//! The simplest way to integrate your app into xcode environment is to build it
+//! as a static library. Wrap your main function and export it.
+//!
+//! ```rust, ignore
+//! #[no_mangle]
+//! pub extern fn start_winit_app() {
+//!     start_inner()
+//! }
+//!
+//! fn start_inner() {
+//!    ...
+//! }
+//! ```
+//!
+//! Compile project and then drag resulting .a into Xcode project. Add winit.h to xcode.
+//!
+//! ```ignore
+//! void start_winit_app();
+//! ```
+//!
+//! Use start_winit_app inside your xcode's main function.
+//!
+//!
+//! # App lifecycle and events
+//!
+//! iOS environment is very different from other platforms and you must be very
+//! careful with it's events. Familiarize yourself with
+//! [app lifecycle](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIApplicationDelegate_Protocol/).
+//!
+//!
+//! This is how those event are represented in winit:
+//!
+//!  - applicationDidBecomeActive is Resumed
+//!  - applicationWillResignActive is Suspended
+//!  - applicationWillTerminate is LoopExiting
+//!
+//! Keep in mind that after LoopExiting event is received every attempt to draw with
+//! opengl will result in segfault.
+//!
+//! Also note that app may not receive the LoopExiting event if suspended; it might be SIGKILL'ed.
+
 #![cfg(ios_platform)]
 #![allow(clippy::let_unit_value)]
 
-mod app_delegate;
 mod app_state;
 mod event_loop;
+mod ffi;
 mod monitor;
 mod uikit;
 mod view;
-mod view_controller;
 mod window;
 
 use std::fmt;
@@ -16,20 +72,20 @@ use crate::event::DeviceId as RootDeviceId;
 
 pub(crate) use self::{
     event_loop::{
-        ActiveEventLoop, EventLoop, EventLoopProxy, OwnedDisplayHandle,
+        EventLoop, EventLoopProxy, EventLoopWindowTarget, OwnedDisplayHandle,
         PlatformSpecificEventLoopAttributes,
     },
     monitor::{MonitorHandle, VideoModeHandle},
-    window::{PlatformSpecificWindowAttributes, Window, WindowId},
+    window::{PlatformSpecificWindowBuilderAttributes, Window, WindowId},
 };
 pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursor;
-pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursorSource;
+pub(crate) use crate::cursor::NoCustomCursor as PlatformCustomCursorBuilder;
 pub(crate) use crate::icon::NoIcon as PlatformIcon;
 pub(crate) use crate::platform_impl::Fullscreen;
 
 /// There is no way to detect which device that performed a certain event in
 /// UIKit (i.e. you can't differentiate between different external keyboards,
-/// or whether it was the main touchscreen, assistive technologies, or some
+/// or wether it was the main touchscreen, assistive technologies, or some
 /// other pointer device that caused a touch event).
 #[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct DeviceId;

src/platform_impl/ios/uikit/device.rs

@@ -1,8 +1,9 @@
-use icrate::Foundation::{MainThreadMarker, NSInteger, NSObject};
+use icrate::Foundation::{MainThreadMarker, NSObject};
-use objc2::encode::{Encode, Encoding};
 use objc2::rc::Id;
 use objc2::{extern_class, extern_methods, msg_send_id, mutability, ClassType};
 
+use super::super::ffi::UIUserInterfaceIdiom;
+
 extern_class!(
     #[derive(Debug, PartialEq, Eq, Hash)]
     pub(crate) struct UIDevice;
@@ -23,19 +24,3 @@ extern_methods!(
         pub fn userInterfaceIdiom(&self) -> UIUserInterfaceIdiom;
     }
 );
-
-#[repr(transparent)]
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub struct UIUserInterfaceIdiom(NSInteger);
-
-unsafe impl Encode for UIUserInterfaceIdiom {
-    const ENCODING: Encoding = NSInteger::ENCODING;
-}
-
-impl UIUserInterfaceIdiom {
-    pub const Unspecified: UIUserInterfaceIdiom = UIUserInterfaceIdiom(-1);
-    pub const Phone: UIUserInterfaceIdiom = UIUserInterfaceIdiom(0);
-    pub const Pad: UIUserInterfaceIdiom = UIUserInterfaceIdiom(1);
-    pub const TV: UIUserInterfaceIdiom = UIUserInterfaceIdiom(2);
-    pub const CarPlay: UIUserInterfaceIdiom = UIUserInterfaceIdiom(3);
-}

src/platform_impl/ios/uikit/geometry.rs

@@ -1,14 +0,0 @@
-use icrate::Foundation::NSUInteger;
-use objc2::encode::{Encode, Encoding};
-
-#[repr(transparent)]
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub struct UIRectEdge(pub NSUInteger);
-
-impl UIRectEdge {
-    pub const NONE: Self = Self(0);
-}
-
-unsafe impl Encode for UIRectEdge {
-    const ENCODING: Encoding = NSUInteger::ENCODING;
-}

src/platform_impl/ios/uikit/mod.rs

@@ -9,7 +9,6 @@ mod application;
 mod coordinate_space;
 mod device;
 mod event;
-mod geometry;
 mod gesture_recognizer;
 mod responder;
 mod screen;
@@ -23,9 +22,8 @@ mod window;
 
 pub(crate) use self::application::UIApplication;
 pub(crate) use self::coordinate_space::UICoordinateSpace;
-pub(crate) use self::device::{UIDevice, UIUserInterfaceIdiom};
+pub(crate) use self::device::UIDevice;
 pub(crate) use self::event::UIEvent;
-pub(crate) use self::geometry::UIRectEdge;
 pub(crate) use self::gesture_recognizer::{
     UIGestureRecognizer, UIGestureRecognizerState, UIPinchGestureRecognizer,
     UIRotationGestureRecognizer, UITapGestureRecognizer,

src/platform_impl/ios/uikit/status_bar_style.rs

@@ -1,3 +1,4 @@
+use crate::platform::ios::StatusBarStyle;
 use icrate::Foundation::NSInteger;
 use objc2::encode::{Encode, Encoding};
 
@@ -11,6 +12,16 @@ pub enum UIStatusBarStyle {
     DarkContent = 3,
 }
 
+impl From<StatusBarStyle> for UIStatusBarStyle {
+    fn from(value: StatusBarStyle) -> Self {
+        match value {
+            StatusBarStyle::Default => Self::Default,
+            StatusBarStyle::LightContent => Self::LightContent,
+            StatusBarStyle::DarkContent => Self::DarkContent,
+        }
+    }
+}
+
 unsafe impl Encode for UIStatusBarStyle {
     const ENCODING: Encoding = NSInteger::ENCODING;
 }

src/platform_impl/ios/view.rs

@@ -1,7 +1,7 @@
 #![allow(clippy::unnecessary_cast)]
-use std::cell::RefCell;
+use std::cell::{Cell, RefCell};
 
-use icrate::Foundation::{CGFloat, CGRect, MainThreadMarker, NSObject, NSSet};
+use icrate::Foundation::{CGFloat, CGRect, MainThreadMarker, NSObject, NSObjectProtocol, NSSet};
 use objc2::rc::Id;
 use objc2::runtime::AnyClass;
 use objc2::{
@@ -10,15 +10,20 @@ use objc2::{
 
 use super::app_state::{self, EventWrapper};
 use super::uikit::{
-    UIEvent, UIForceTouchCapability, UIGestureRecognizerState, UIPinchGestureRecognizer,
+    UIApplication, UIDevice, UIEvent, UIForceTouchCapability, UIGestureRecognizerState,
-    UIResponder, UIRotationGestureRecognizer, UITapGestureRecognizer, UITouch, UITouchPhase,
+    UIInterfaceOrientationMask, UIPinchGestureRecognizer, UIResponder, UIRotationGestureRecognizer,
-    UITouchType, UITraitCollection, UIView,
+    UIStatusBarStyle, UITapGestureRecognizer, UITouch, UITouchPhase, UITouchType,
+    UITraitCollection, UIView, UIViewController, UIWindow,
 };
-use super::window::WinitUIWindow;
+use super::window::WindowId;
 use crate::{
     dpi::PhysicalPosition,
     event::{Event, Force, Touch, TouchPhase, WindowEvent},
-    platform_impl::platform::DEVICE_ID,
+    platform::ios::ValidOrientations,
+    platform_impl::platform::{
+        ffi::{UIRectEdge, UIUserInterfaceIdiom},
+        Fullscreen, DEVICE_ID,
+    },
     window::{WindowAttributes, WindowId as RootWindowId},
 };
 
@@ -389,3 +394,339 @@ impl WinitView {
         app_state::handle_nonuser_events(mtm, touch_events);
     }
 }
+
+pub struct ViewControllerState {
+    prefers_status_bar_hidden: Cell<bool>,
+    preferred_status_bar_style: Cell<UIStatusBarStyle>,
+    prefers_home_indicator_auto_hidden: Cell<bool>,
+    supported_orientations: Cell<UIInterfaceOrientationMask>,
+    preferred_screen_edges_deferring_system_gestures: Cell<UIRectEdge>,
+}
+
+declare_class!(
+    pub(crate) struct WinitViewController;
+
+    unsafe impl ClassType for WinitViewController {
+        #[inherits(UIResponder, NSObject)]
+        type Super = UIViewController;
+        type Mutability = mutability::InteriorMutable;
+        const NAME: &'static str = "WinitUIViewController";
+    }
+
+    impl DeclaredClass for WinitViewController {
+        type Ivars = ViewControllerState;
+    }
+
+    unsafe impl WinitViewController {
+        #[method(shouldAutorotate)]
+        fn should_autorotate(&self) -> bool {
+            true
+        }
+
+        #[method(prefersStatusBarHidden)]
+        fn prefers_status_bar_hidden(&self) -> bool {
+            self.ivars().prefers_status_bar_hidden.get()
+        }
+
+        #[method(preferredStatusBarStyle)]
+        fn preferred_status_bar_style(&self) -> UIStatusBarStyle {
+            self.ivars().preferred_status_bar_style.get()
+        }
+
+        #[method(prefersHomeIndicatorAutoHidden)]
+        fn prefers_home_indicator_auto_hidden(&self) -> bool {
+            self.ivars().prefers_home_indicator_auto_hidden.get()
+        }
+
+        #[method(supportedInterfaceOrientations)]
+        fn supported_orientations(&self) -> UIInterfaceOrientationMask {
+            self.ivars().supported_orientations.get()
+        }
+
+        #[method(preferredScreenEdgesDeferringSystemGestures)]
+        fn preferred_screen_edges_deferring_system_gestures(&self) -> UIRectEdge {
+            self.ivars()
+                .preferred_screen_edges_deferring_system_gestures
+                .get()
+        }
+    }
+);
+
+impl WinitViewController {
+    pub(crate) fn set_prefers_status_bar_hidden(&self, val: bool) {
+        self.ivars().prefers_status_bar_hidden.set(val);
+        self.setNeedsStatusBarAppearanceUpdate();
+    }
+
+    pub(crate) fn set_preferred_status_bar_style(&self, val: UIStatusBarStyle) {
+        self.ivars().preferred_status_bar_style.set(val);
+        self.setNeedsStatusBarAppearanceUpdate();
+    }
+
+    pub(crate) fn set_prefers_home_indicator_auto_hidden(&self, val: bool) {
+        self.ivars().prefers_home_indicator_auto_hidden.set(val);
+        let os_capabilities = app_state::os_capabilities();
+        if os_capabilities.home_indicator_hidden {
+            self.setNeedsUpdateOfHomeIndicatorAutoHidden();
+        } else {
+            os_capabilities.home_indicator_hidden_err_msg("ignoring")
+        }
+    }
+
+    pub(crate) fn set_preferred_screen_edges_deferring_system_gestures(&self, val: UIRectEdge) {
+        self.ivars()
+            .preferred_screen_edges_deferring_system_gestures
+            .set(val);
+        let os_capabilities = app_state::os_capabilities();
+        if os_capabilities.defer_system_gestures {
+            self.setNeedsUpdateOfScreenEdgesDeferringSystemGestures();
+        } else {
+            os_capabilities.defer_system_gestures_err_msg("ignoring")
+        }
+    }
+
+    pub(crate) fn set_supported_interface_orientations(
+        &self,
+        mtm: MainThreadMarker,
+        valid_orientations: ValidOrientations,
+    ) {
+        let mask = match (
+            valid_orientations,
+            UIDevice::current(mtm).userInterfaceIdiom(),
+        ) {
+            (ValidOrientations::LandscapeAndPortrait, UIUserInterfaceIdiom::Phone) => {
+                UIInterfaceOrientationMask::AllButUpsideDown
+            }
+            (ValidOrientations::LandscapeAndPortrait, _) => UIInterfaceOrientationMask::All,
+            (ValidOrientations::Landscape, _) => UIInterfaceOrientationMask::Landscape,
+            (ValidOrientations::Portrait, UIUserInterfaceIdiom::Phone) => {
+                UIInterfaceOrientationMask::Portrait
+            }
+            (ValidOrientations::Portrait, _) => {
+                UIInterfaceOrientationMask::Portrait
+                    | UIInterfaceOrientationMask::PortraitUpsideDown
+            }
+        };
+        self.ivars().supported_orientations.set(mask);
+        UIViewController::attemptRotationToDeviceOrientation();
+    }
+
+    pub(crate) fn new(
+        mtm: MainThreadMarker,
+        window_attributes: &WindowAttributes,
+        view: &UIView,
+    ) -> Id<Self> {
+        // These are set properly below, we just to set them to something in the meantime.
+        let this = Self::alloc().set_ivars(ViewControllerState {
+            prefers_status_bar_hidden: Cell::new(false),
+            preferred_status_bar_style: Cell::new(UIStatusBarStyle::Default),
+            prefers_home_indicator_auto_hidden: Cell::new(false),
+            supported_orientations: Cell::new(UIInterfaceOrientationMask::All),
+            preferred_screen_edges_deferring_system_gestures: Cell::new(UIRectEdge::NONE),
+        });
+        let this: Id<Self> = unsafe { msg_send_id![super(this), init] };
+
+        this.set_prefers_status_bar_hidden(
+            window_attributes
+                .platform_specific
+                .prefers_status_bar_hidden,
+        );
+
+        this.set_preferred_status_bar_style(
+            window_attributes
+                .platform_specific
+                .preferred_status_bar_style
+                .into(),
+        );
+
+        this.set_supported_interface_orientations(
+            mtm,
+            window_attributes.platform_specific.valid_orientations,
+        );
+
+        this.set_prefers_home_indicator_auto_hidden(
+            window_attributes
+                .platform_specific
+                .prefers_home_indicator_hidden,
+        );
+
+        this.set_preferred_screen_edges_deferring_system_gestures(
+            window_attributes
+                .platform_specific
+                .preferred_screen_edges_deferring_system_gestures
+                .into(),
+        );
+
+        this.setView(Some(view));
+
+        this
+    }
+}
+
+declare_class!(
+    #[derive(Debug, PartialEq, Eq, Hash)]
+    pub(crate) struct WinitUIWindow;
+
+    unsafe impl ClassType for WinitUIWindow {
+        #[inherits(UIResponder, NSObject)]
+        type Super = UIWindow;
+        type Mutability = mutability::InteriorMutable;
+        const NAME: &'static str = "WinitUIWindow";
+    }
+
+    impl DeclaredClass for WinitUIWindow {}
+
+    unsafe impl WinitUIWindow {
+        #[method(becomeKeyWindow)]
+        fn become_key_window(&self) {
+            let mtm = MainThreadMarker::new().unwrap();
+            app_state::handle_nonuser_event(
+                mtm,
+                EventWrapper::StaticEvent(Event::WindowEvent {
+                    window_id: RootWindowId(self.id()),
+                    event: WindowEvent::Focused(true),
+                }),
+            );
+            let _: () = unsafe { msg_send![super(self), becomeKeyWindow] };
+        }
+
+        #[method(resignKeyWindow)]
+        fn resign_key_window(&self) {
+            let mtm = MainThreadMarker::new().unwrap();
+            app_state::handle_nonuser_event(
+                mtm,
+                EventWrapper::StaticEvent(Event::WindowEvent {
+                    window_id: RootWindowId(self.id()),
+                    event: WindowEvent::Focused(false),
+                }),
+            );
+            let _: () = unsafe { msg_send![super(self), resignKeyWindow] };
+        }
+    }
+);
+
+impl WinitUIWindow {
+    pub(crate) fn new(
+        mtm: MainThreadMarker,
+        window_attributes: &WindowAttributes,
+        frame: CGRect,
+        view_controller: &UIViewController,
+    ) -> Id<Self> {
+        let this: Id<Self> = unsafe { msg_send_id![Self::alloc(), initWithFrame: frame] };
+
+        this.setRootViewController(Some(view_controller));
+
+        match window_attributes.fullscreen.clone().map(Into::into) {
+            Some(Fullscreen::Exclusive(ref video_mode)) => {
+                let monitor = video_mode.monitor();
+                let screen = monitor.ui_screen(mtm);
+                screen.setCurrentMode(Some(video_mode.screen_mode(mtm)));
+                this.setScreen(screen);
+            }
+            Some(Fullscreen::Borderless(Some(ref monitor))) => {
+                let screen = monitor.ui_screen(mtm);
+                this.setScreen(screen);
+            }
+            _ => (),
+        }
+
+        this
+    }
+
+    pub(crate) fn id(&self) -> WindowId {
+        (self as *const Self as usize as u64).into()
+    }
+}
+
+declare_class!(
+    pub struct WinitApplicationDelegate;
+
+    unsafe impl ClassType for WinitApplicationDelegate {
+        type Super = NSObject;
+        type Mutability = mutability::InteriorMutable;
+        const NAME: &'static str = "WinitApplicationDelegate";
+    }
+
+    impl DeclaredClass for WinitApplicationDelegate {}
+
+    // UIApplicationDelegate protocol
+    unsafe impl WinitApplicationDelegate {
+        #[method(application:didFinishLaunchingWithOptions:)]
+        fn did_finish_launching(&self, _application: &UIApplication, _: *mut NSObject) -> bool {
+            app_state::did_finish_launching(MainThreadMarker::new().unwrap());
+            true
+        }
+
+        #[method(applicationDidBecomeActive:)]
+        fn did_become_active(&self, _application: &UIApplication) {
+            let mtm = MainThreadMarker::new().unwrap();
+            app_state::handle_nonuser_event(mtm, EventWrapper::StaticEvent(Event::Resumed))
+        }
+
+        #[method(applicationWillResignActive:)]
+        fn will_resign_active(&self, _application: &UIApplication) {
+            let mtm = MainThreadMarker::new().unwrap();
+            app_state::handle_nonuser_event(mtm, EventWrapper::StaticEvent(Event::Suspended))
+        }
+
+        #[method(applicationWillEnterForeground:)]
+        fn will_enter_foreground(&self, application: &UIApplication) {
+            self.send_occluded_event_for_all_windows(application, false);
+        }
+
+        #[method(applicationDidEnterBackground:)]
+        fn did_enter_background(&self, application: &UIApplication) {
+            self.send_occluded_event_for_all_windows(application, true);
+        }
+
+        #[method(applicationWillTerminate:)]
+        fn will_terminate(&self, application: &UIApplication) {
+            let mut events = Vec::new();
+            for window in application.windows().iter() {
+                if window.is_kind_of::<WinitUIWindow>() {
+                    // SAFETY: We just checked that the window is a `winit` window
+                    let window = unsafe {
+                        let ptr: *const UIWindow = window;
+                        let ptr: *const WinitUIWindow = ptr.cast();
+                        &*ptr
+                    };
+                    events.push(EventWrapper::StaticEvent(Event::WindowEvent {
+                        window_id: RootWindowId(window.id()),
+                        event: WindowEvent::Destroyed,
+                    }));
+                }
+            }
+            let mtm = MainThreadMarker::new().unwrap();
+            app_state::handle_nonuser_events(mtm, events);
+            app_state::terminated(mtm);
+        }
+
+        #[method(applicationDidReceiveMemoryWarning:)]
+        fn did_receive_memory_warning(&self, _application: &UIApplication) {
+            let mtm = MainThreadMarker::new().unwrap();
+            app_state::handle_nonuser_event(mtm, EventWrapper::StaticEvent(Event::MemoryWarning))
+        }
+    }
+);
+
+impl WinitApplicationDelegate {
+    fn send_occluded_event_for_all_windows(&self, application: &UIApplication, occluded: bool) {
+        let mut events = Vec::new();
+        for window in application.windows().iter() {
+            if window.is_kind_of::<WinitUIWindow>() {
+                // SAFETY: We just checked that the window is a `winit` window
+                let window = unsafe {
+                    let ptr: *const UIWindow = window;
+                    let ptr: *const WinitUIWindow = ptr.cast();
+                    &*ptr
+                };
+                events.push(EventWrapper::StaticEvent(Event::WindowEvent {
+                    window_id: RootWindowId(window.id()),
+                    event: WindowEvent::Occluded(occluded),
+                }));
+            }
+        }
+        let mtm = MainThreadMarker::new().unwrap();
+        app_state::handle_nonuser_events(mtm, events);
+    }
+}

src/platform_impl/ios/view_controller.rs

@@ -1,192 +0,0 @@
-use std::cell::Cell;
-
-use icrate::Foundation::{MainThreadMarker, NSObject};
-use objc2::rc::Id;
-use objc2::{declare_class, msg_send_id, mutability, ClassType, DeclaredClass};
-
-use super::app_state::{self};
-use super::uikit::{
-    UIDevice, UIInterfaceOrientationMask, UIRectEdge, UIResponder, UIStatusBarStyle,
-    UIUserInterfaceIdiom, UIView, UIViewController,
-};
-use crate::platform::ios::{ScreenEdge, StatusBarStyle};
-use crate::{platform::ios::ValidOrientations, window::WindowAttributes};
-
-pub struct ViewControllerState {
-    prefers_status_bar_hidden: Cell<bool>,
-    preferred_status_bar_style: Cell<UIStatusBarStyle>,
-    prefers_home_indicator_auto_hidden: Cell<bool>,
-    supported_orientations: Cell<UIInterfaceOrientationMask>,
-    preferred_screen_edges_deferring_system_gestures: Cell<UIRectEdge>,
-}
-
-declare_class!(
-    pub(crate) struct WinitViewController;
-
-    unsafe impl ClassType for WinitViewController {
-        #[inherits(UIResponder, NSObject)]
-        type Super = UIViewController;
-        type Mutability = mutability::InteriorMutable;
-        const NAME: &'static str = "WinitUIViewController";
-    }
-
-    impl DeclaredClass for WinitViewController {
-        type Ivars = ViewControllerState;
-    }
-
-    unsafe impl WinitViewController {
-        #[method(shouldAutorotate)]
-        fn should_autorotate(&self) -> bool {
-            true
-        }
-
-        #[method(prefersStatusBarHidden)]
-        fn prefers_status_bar_hidden(&self) -> bool {
-            self.ivars().prefers_status_bar_hidden.get()
-        }
-
-        #[method(preferredStatusBarStyle)]
-        fn preferred_status_bar_style(&self) -> UIStatusBarStyle {
-            self.ivars().preferred_status_bar_style.get()
-        }
-
-        #[method(prefersHomeIndicatorAutoHidden)]
-        fn prefers_home_indicator_auto_hidden(&self) -> bool {
-            self.ivars().prefers_home_indicator_auto_hidden.get()
-        }
-
-        #[method(supportedInterfaceOrientations)]
-        fn supported_orientations(&self) -> UIInterfaceOrientationMask {
-            self.ivars().supported_orientations.get()
-        }
-
-        #[method(preferredScreenEdgesDeferringSystemGestures)]
-        fn preferred_screen_edges_deferring_system_gestures(&self) -> UIRectEdge {
-            self.ivars()
-                .preferred_screen_edges_deferring_system_gestures
-                .get()
-        }
-    }
-);
-
-impl WinitViewController {
-    pub(crate) fn set_prefers_status_bar_hidden(&self, val: bool) {
-        self.ivars().prefers_status_bar_hidden.set(val);
-        self.setNeedsStatusBarAppearanceUpdate();
-    }
-
-    pub(crate) fn set_preferred_status_bar_style(&self, val: StatusBarStyle) {
-        let val = match val {
-            StatusBarStyle::Default => UIStatusBarStyle::Default,
-            StatusBarStyle::LightContent => UIStatusBarStyle::LightContent,
-            StatusBarStyle::DarkContent => UIStatusBarStyle::DarkContent,
-        };
-        self.ivars().preferred_status_bar_style.set(val);
-        self.setNeedsStatusBarAppearanceUpdate();
-    }
-
-    pub(crate) fn set_prefers_home_indicator_auto_hidden(&self, val: bool) {
-        self.ivars().prefers_home_indicator_auto_hidden.set(val);
-        let os_capabilities = app_state::os_capabilities();
-        if os_capabilities.home_indicator_hidden {
-            self.setNeedsUpdateOfHomeIndicatorAutoHidden();
-        } else {
-            os_capabilities.home_indicator_hidden_err_msg("ignoring")
-        }
-    }
-
-    pub(crate) fn set_preferred_screen_edges_deferring_system_gestures(&self, val: ScreenEdge) {
-        let val = {
-            assert_eq!(
-                val.bits() & !ScreenEdge::ALL.bits(),
-                0,
-                "invalid `ScreenEdge`"
-            );
-            UIRectEdge(val.bits().into())
-        };
-        self.ivars()
-            .preferred_screen_edges_deferring_system_gestures
-            .set(val);
-        let os_capabilities = app_state::os_capabilities();
-        if os_capabilities.defer_system_gestures {
-            self.setNeedsUpdateOfScreenEdgesDeferringSystemGestures();
-        } else {
-            os_capabilities.defer_system_gestures_err_msg("ignoring")
-        }
-    }
-
-    pub(crate) fn set_supported_interface_orientations(
-        &self,
-        mtm: MainThreadMarker,
-        valid_orientations: ValidOrientations,
-    ) {
-        let mask = match (
-            valid_orientations,
-            UIDevice::current(mtm).userInterfaceIdiom(),
-        ) {
-            (ValidOrientations::LandscapeAndPortrait, UIUserInterfaceIdiom::Phone) => {
-                UIInterfaceOrientationMask::AllButUpsideDown
-            }
-            (ValidOrientations::LandscapeAndPortrait, _) => UIInterfaceOrientationMask::All,
-            (ValidOrientations::Landscape, _) => UIInterfaceOrientationMask::Landscape,
-            (ValidOrientations::Portrait, UIUserInterfaceIdiom::Phone) => {
-                UIInterfaceOrientationMask::Portrait
-            }
-            (ValidOrientations::Portrait, _) => {
-                UIInterfaceOrientationMask::Portrait
-                    | UIInterfaceOrientationMask::PortraitUpsideDown
-            }
-        };
-        self.ivars().supported_orientations.set(mask);
-        UIViewController::attemptRotationToDeviceOrientation();
-    }
-
-    pub(crate) fn new(
-        mtm: MainThreadMarker,
-        window_attributes: &WindowAttributes,
-        view: &UIView,
-    ) -> Id<Self> {
-        // These are set properly below, we just to set them to something in the meantime.
-        let this = Self::alloc().set_ivars(ViewControllerState {
-            prefers_status_bar_hidden: Cell::new(false),
-            preferred_status_bar_style: Cell::new(UIStatusBarStyle::Default),
-            prefers_home_indicator_auto_hidden: Cell::new(false),
-            supported_orientations: Cell::new(UIInterfaceOrientationMask::All),
-            preferred_screen_edges_deferring_system_gestures: Cell::new(UIRectEdge::NONE),
-        });
-        let this: Id<Self> = unsafe { msg_send_id![super(this), init] };
-
-        this.set_prefers_status_bar_hidden(
-            window_attributes
-                .platform_specific
-                .prefers_status_bar_hidden,
-        );
-
-        this.set_preferred_status_bar_style(
-            window_attributes
-                .platform_specific
-                .preferred_status_bar_style,
-        );
-
-        this.set_supported_interface_orientations(
-            mtm,
-            window_attributes.platform_specific.valid_orientations,
-        );
-
-        this.set_prefers_home_indicator_auto_hidden(
-            window_attributes
-                .platform_specific
-                .prefers_home_indicator_hidden,
-        );
-
-        this.set_preferred_screen_edges_deferring_system_gestures(
-            window_attributes
-                .platform_specific
-                .preferred_screen_edges_deferring_system_gestures,
-        );
-
-        this.setView(Some(view));
-
-        this
-    }
-}

src/platform_impl/ios/window.rs

@@ -5,104 +5,28 @@ use std::collections::VecDeque;
 use icrate::Foundation::{CGFloat, CGPoint, CGRect, CGSize, MainThreadBound, MainThreadMarker};
 use log::{debug, warn};
 use objc2::rc::Id;
-use objc2::runtime::{AnyObject, NSObject};
+use objc2::runtime::AnyObject;
-use objc2::{class, declare_class, msg_send, msg_send_id, mutability, ClassType, DeclaredClass};
+use objc2::{class, msg_send};
 
 use super::app_state::EventWrapper;
-use super::uikit::{
+use super::uikit::{UIApplication, UIScreen, UIScreenOverscanCompensation};
-    UIApplication, UIResponder, UIScreen, UIScreenOverscanCompensation, UIViewController, UIWindow,
+use super::view::{WinitUIWindow, WinitView, WinitViewController};
-};
-use super::view::WinitView;
-use super::view_controller::WinitViewController;
 use crate::{
     cursor::Cursor,
-    dpi::{LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size},
+    dpi::{self, LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size},
     error::{ExternalError, NotSupportedError, OsError as RootOsError},
     event::{Event, WindowEvent},
     icon::Icon,
     platform::ios::{ScreenEdge, StatusBarStyle, ValidOrientations},
-    platform_impl::platform::{app_state, monitor, ActiveEventLoop, Fullscreen, MonitorHandle},
+    platform_impl::platform::{
+        app_state, monitor, EventLoopWindowTarget, Fullscreen, MonitorHandle,
+    },
     window::{
         CursorGrabMode, ImePurpose, ResizeDirection, Theme, UserAttentionType, WindowAttributes,
         WindowButtons, WindowId as RootWindowId, WindowLevel,
     },
 };
 
-declare_class!(
-    #[derive(Debug, PartialEq, Eq, Hash)]
-    pub(crate) struct WinitUIWindow;
-
-    unsafe impl ClassType for WinitUIWindow {
-        #[inherits(UIResponder, NSObject)]
-        type Super = UIWindow;
-        type Mutability = mutability::InteriorMutable;
-        const NAME: &'static str = "WinitUIWindow";
-    }
-
-    impl DeclaredClass for WinitUIWindow {}
-
-    unsafe impl WinitUIWindow {
-        #[method(becomeKeyWindow)]
-        fn become_key_window(&self) {
-            let mtm = MainThreadMarker::new().unwrap();
-            app_state::handle_nonuser_event(
-                mtm,
-                EventWrapper::StaticEvent(Event::WindowEvent {
-                    window_id: RootWindowId(self.id()),
-                    event: WindowEvent::Focused(true),
-                }),
-            );
-            let _: () = unsafe { msg_send![super(self), becomeKeyWindow] };
-        }
-
-        #[method(resignKeyWindow)]
-        fn resign_key_window(&self) {
-            let mtm = MainThreadMarker::new().unwrap();
-            app_state::handle_nonuser_event(
-                mtm,
-                EventWrapper::StaticEvent(Event::WindowEvent {
-                    window_id: RootWindowId(self.id()),
-                    event: WindowEvent::Focused(false),
-                }),
-            );
-            let _: () = unsafe { msg_send![super(self), resignKeyWindow] };
-        }
-    }
-);
-
-impl WinitUIWindow {
-    pub(crate) fn new(
-        mtm: MainThreadMarker,
-        window_attributes: &WindowAttributes,
-        frame: CGRect,
-        view_controller: &UIViewController,
-    ) -> Id<Self> {
-        let this: Id<Self> = unsafe { msg_send_id![Self::alloc(), initWithFrame: frame] };
-
-        this.setRootViewController(Some(view_controller));
-
-        match window_attributes.fullscreen.clone().map(Into::into) {
-            Some(Fullscreen::Exclusive(ref video_mode)) => {
-                let monitor = video_mode.monitor();
-                let screen = monitor.ui_screen(mtm);
-                screen.setCurrentMode(Some(video_mode.screen_mode(mtm)));
-                this.setScreen(screen);
-            }
-            Some(Fullscreen::Borderless(Some(ref monitor))) => {
-                let screen = monitor.ui_screen(mtm);
-                this.setScreen(screen);
-            }
-            _ => (),
-        }
-
-        this
-    }
-
-    pub(crate) fn id(&self) -> WindowId {
-        (self as *const Self as usize as u64).into()
-    }
-}
-
 pub struct Inner {
     window: Id<WinitUIWindow>,
     view_controller: Id<WinitViewController>,
@@ -475,7 +399,7 @@ pub struct Window {
 
 impl Window {
     pub(crate) fn new(
-        event_loop: &ActiveEventLoop,
+        event_loop: &EventLoopWindowTarget,
         window_attributes: WindowAttributes,
     ) -> Result<Window, RootOsError> {
         let mtm = event_loop.mtm;
@@ -537,7 +461,7 @@ impl Window {
             let screen = window.screen();
             let screen_space = screen.coordinateSpace();
             let screen_frame = view.convertRect_toCoordinateSpace(bounds, &screen_space);
-            let size = LogicalSize {
+            let size = crate::dpi::LogicalSize {
                 width: screen_frame.size.width as f64,
                 height: screen_frame.size.height as f64,
             };
@@ -628,7 +552,7 @@ impl Inner {
 
     pub fn set_preferred_screen_edges_deferring_system_gestures(&self, edges: ScreenEdge) {
         self.view_controller
-            .set_preferred_screen_edges_deferring_system_gestures(edges);
+            .set_preferred_screen_edges_deferring_system_gestures(edges.into());
     }
 
     pub fn set_prefers_status_bar_hidden(&self, hidden: bool) {
@@ -637,7 +561,7 @@ impl Inner {
 
     pub fn set_preferred_status_bar_style(&self, status_bar_style: StatusBarStyle) {
         self.view_controller
-            .set_preferred_status_bar_style(status_bar_style);
+            .set_preferred_status_bar_style(status_bar_style.into());
     }
 
     pub fn recognize_pinch_gesture(&self, should_recognize: bool) {
@@ -754,7 +678,7 @@ impl From<&AnyObject> for WindowId {
 }
 
 #[derive(Clone, Debug, Default)]
-pub struct PlatformSpecificWindowAttributes {
+pub struct PlatformSpecificWindowBuilderAttributes {
     pub scale_factor: Option<f64>,
     pub valid_orientations: ValidOrientations,
     pub prefers_home_indicator_hidden: bool,

src/platform_impl/linux/common/keymap.rs

@@ -1,24 +1,6 @@
-//! XKB keymap.
+//! Convert XKB keys to Winit keys.
-
-use std::ffi::c_char;
-use std::ops::Deref;
-use std::ptr::{self, NonNull};
-
-#[cfg(x11_platform)]
-use x11_dl::xlib_xcb::xcb_connection_t;
-#[cfg(wayland_platform)]
-use {memmap2::MmapOptions, std::os::unix::io::OwnedFd};
-
-use xkb::XKB_MOD_INVALID;
-use xkbcommon_dl::{
-    self as xkb, xkb_keycode_t, xkb_keymap, xkb_keymap_compile_flags, xkb_keysym_t,
-    xkb_layout_index_t, xkb_mod_index_t,
-};
 
 use crate::keyboard::{Key, KeyCode, KeyLocation, NamedKey, NativeKey, NativeKeyCode, PhysicalKey};
-#[cfg(x11_platform)]
-use crate::platform_impl::common::xkb::XKBXH;
-use crate::platform_impl::common::xkb::{XkbContext, XKBH};
 
 /// Map the raw X11-style keycode to the `KeyCode` enum.
 ///
@@ -912,140 +894,3 @@ pub fn keysym_location(keysym: u32) -> KeyLocation {
         _ => KeyLocation::Standard,
     }
 }
-
-#[derive(Debug)]
-pub struct XkbKeymap {
-    keymap: NonNull<xkb_keymap>,
-    _mods_indices: ModsIndices,
-    pub _core_keyboard_id: i32,
-}
-
-impl XkbKeymap {
-    #[cfg(wayland_platform)]
-    pub fn from_fd(context: &XkbContext, fd: OwnedFd, size: usize) -> Option<Self> {
-        let map = unsafe { MmapOptions::new().len(size).map_copy_read_only(&fd).ok()? };
-
-        let keymap = unsafe {
-            let keymap = (XKBH.xkb_keymap_new_from_string)(
-                (*context).as_ptr(),
-                map.as_ptr() as *const _,
-                xkb::xkb_keymap_format::XKB_KEYMAP_FORMAT_TEXT_V1,
-                xkb_keymap_compile_flags::XKB_KEYMAP_COMPILE_NO_FLAGS,
-            );
-            NonNull::new(keymap)?
-        };
-
-        Some(Self::new_inner(keymap, 0))
-    }
-
-    #[cfg(x11_platform)]
-    pub fn from_x11_keymap(
-        context: &XkbContext,
-        xcb: *mut xcb_connection_t,
-        core_keyboard_id: i32,
-    ) -> Option<Self> {
-        let keymap = unsafe {
-            (XKBXH.xkb_x11_keymap_new_from_device)(
-                context.as_ptr(),
-                xcb,
-                core_keyboard_id,
-                xkb_keymap_compile_flags::XKB_KEYMAP_COMPILE_NO_FLAGS,
-            )
-        };
-        let keymap = NonNull::new(keymap)?;
-        Some(Self::new_inner(keymap, core_keyboard_id))
-    }
-
-    fn new_inner(keymap: NonNull<xkb_keymap>, _core_keyboard_id: i32) -> Self {
-        let mods_indices = ModsIndices {
-            shift: mod_index_for_name(keymap, xkb::XKB_MOD_NAME_SHIFT),
-            caps: mod_index_for_name(keymap, xkb::XKB_MOD_NAME_CAPS),
-            ctrl: mod_index_for_name(keymap, xkb::XKB_MOD_NAME_CTRL),
-            alt: mod_index_for_name(keymap, xkb::XKB_MOD_NAME_ALT),
-            num: mod_index_for_name(keymap, xkb::XKB_MOD_NAME_NUM),
-            mod3: mod_index_for_name(keymap, b"Mod3\0"),
-            logo: mod_index_for_name(keymap, xkb::XKB_MOD_NAME_LOGO),
-            mod5: mod_index_for_name(keymap, b"Mod5\0"),
-        };
-
-        Self {
-            keymap,
-            _mods_indices: mods_indices,
-            _core_keyboard_id,
-        }
-    }
-
-    #[cfg(x11_platform)]
-    pub fn mods_indices(&self) -> ModsIndices {
-        self._mods_indices
-    }
-
-    pub fn first_keysym_by_level(
-        &mut self,
-        layout: xkb_layout_index_t,
-        keycode: xkb_keycode_t,
-    ) -> xkb_keysym_t {
-        unsafe {
-            let mut keysyms = ptr::null();
-            let count = (XKBH.xkb_keymap_key_get_syms_by_level)(
-                self.keymap.as_ptr(),
-                keycode,
-                layout,
-                // NOTE: The level should be zero to ignore modifiers.
-                0,
-                &mut keysyms,
-            );
-
-            if count == 1 {
-                *keysyms
-            } else {
-                0
-            }
-        }
-    }
-
-    /// Check whether the given key repeats.
-    pub fn key_repeats(&mut self, keycode: xkb_keycode_t) -> bool {
-        unsafe { (XKBH.xkb_keymap_key_repeats)(self.keymap.as_ptr(), keycode) == 1 }
-    }
-}
-
-impl Drop for XkbKeymap {
-    fn drop(&mut self) {
-        unsafe {
-            (XKBH.xkb_keymap_unref)(self.keymap.as_ptr());
-        };
-    }
-}
-
-impl Deref for XkbKeymap {
-    type Target = NonNull<xkb_keymap>;
-    fn deref(&self) -> &Self::Target {
-        &self.keymap
-    }
-}
-
-/// Modifier index in the keymap.
-#[derive(Default, Debug, Clone, Copy)]
-pub struct ModsIndices {
-    pub shift: Option<xkb_mod_index_t>,
-    pub caps: Option<xkb_mod_index_t>,
-    pub ctrl: Option<xkb_mod_index_t>,
-    pub alt: Option<xkb_mod_index_t>,
-    pub num: Option<xkb_mod_index_t>,
-    pub mod3: Option<xkb_mod_index_t>,
-    pub logo: Option<xkb_mod_index_t>,
-    pub mod5: Option<xkb_mod_index_t>,
-}
-
-fn mod_index_for_name(keymap: NonNull<xkb_keymap>, name: &[u8]) -> Option<xkb_mod_index_t> {
-    unsafe {
-        let mod_index =
-            (XKBH.xkb_keymap_mod_get_index)(keymap.as_ptr(), name.as_ptr() as *const c_char);
-        if mod_index == XKB_MOD_INVALID {
-            None
-        } else {
-            Some(mod_index)
-        }
-    }
-}

src/platform_impl/linux/common/mod.rs

@@ -1 +1,2 @@
-pub mod xkb;
+pub mod keymap;
+pub mod xkb_state;

src/platform_impl/linux/common/xkb/compose.rs

@@ -1,124 +0,0 @@
-//! XKB compose handling.
-
-use std::env;
-use std::ffi::CString;
-use std::ops::Deref;
-use std::os::unix::ffi::OsStringExt;
-use std::ptr::NonNull;
-
-use super::XkbContext;
-use super::XKBCH;
-use smol_str::SmolStr;
-use xkbcommon_dl::{
-    xkb_compose_compile_flags, xkb_compose_feed_result, xkb_compose_state, xkb_compose_state_flags,
-    xkb_compose_status, xkb_compose_table, xkb_keysym_t,
-};
-
-#[derive(Debug)]
-pub struct XkbComposeTable {
-    table: NonNull<xkb_compose_table>,
-}
-
-impl XkbComposeTable {
-    pub fn new(context: &XkbContext) -> Option<Self> {
-        let locale = env::var_os("LC_ALL")
-            .and_then(|v| if v.is_empty() { None } else { Some(v) })
-            .or_else(|| env::var_os("LC_CTYPE"))
-            .and_then(|v| if v.is_empty() { None } else { Some(v) })
-            .or_else(|| env::var_os("LANG"))
-            .and_then(|v| if v.is_empty() { None } else { Some(v) })
-            .unwrap_or_else(|| "C".into());
-        let locale = CString::new(locale.into_vec()).unwrap();
-
-        let table = unsafe {
-            (XKBCH.xkb_compose_table_new_from_locale)(
-                context.as_ptr(),
-                locale.as_ptr(),
-                xkb_compose_compile_flags::XKB_COMPOSE_COMPILE_NO_FLAGS,
-            )
-        };
-
-        let table = NonNull::new(table)?;
-        Some(Self { table })
-    }
-
-    /// Create new state with the given compose table.
-    pub fn new_state(&self) -> Option<XkbComposeState> {
-        let state = unsafe {
-            (XKBCH.xkb_compose_state_new)(
-                self.table.as_ptr(),
-                xkb_compose_state_flags::XKB_COMPOSE_STATE_NO_FLAGS,
-            )
-        };
-
-        let state = NonNull::new(state)?;
-        Some(XkbComposeState { state })
-    }
-}
-
-impl Deref for XkbComposeTable {
-    type Target = NonNull<xkb_compose_table>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.table
-    }
-}
-
-impl Drop for XkbComposeTable {
-    fn drop(&mut self) {
-        unsafe {
-            (XKBCH.xkb_compose_table_unref)(self.table.as_ptr());
-        }
-    }
-}
-
-#[derive(Debug)]
-pub struct XkbComposeState {
-    state: NonNull<xkb_compose_state>,
-}
-
-impl XkbComposeState {
-    pub fn get_string(&mut self, scratch_buffer: &mut Vec<u8>) -> Option<SmolStr> {
-        super::make_string_with(scratch_buffer, |ptr, len| unsafe {
-            (XKBCH.xkb_compose_state_get_utf8)(self.state.as_ptr(), ptr, len)
-        })
-    }
-
-    #[inline]
-    pub fn feed(&mut self, keysym: xkb_keysym_t) -> ComposeStatus {
-        let feed_result = unsafe { (XKBCH.xkb_compose_state_feed)(self.state.as_ptr(), keysym) };
-        match feed_result {
-            xkb_compose_feed_result::XKB_COMPOSE_FEED_IGNORED => ComposeStatus::Ignored,
-            xkb_compose_feed_result::XKB_COMPOSE_FEED_ACCEPTED => {
-                ComposeStatus::Accepted(self.status())
-            }
-        }
-    }
-
-    #[inline]
-    pub fn reset(&mut self) {
-        unsafe {
-            (XKBCH.xkb_compose_state_reset)(self.state.as_ptr());
-        }
-    }
-
-    #[inline]
-    pub fn status(&mut self) -> xkb_compose_status {
-        unsafe { (XKBCH.xkb_compose_state_get_status)(self.state.as_ptr()) }
-    }
-}
-
-impl Drop for XkbComposeState {
-    fn drop(&mut self) {
-        unsafe {
-            (XKBCH.xkb_compose_state_unref)(self.state.as_ptr());
-        };
-    }
-}
-
-#[derive(Copy, Clone, Debug)]
-pub enum ComposeStatus {
-    Accepted(xkb_compose_status),
-    Ignored,
-    None,
-}

src/platform_impl/linux/common/xkb/mod.rs

@@ -1,460 +0,0 @@
-use std::ops::Deref;
-use std::os::raw::c_char;
-use std::ptr::{self, NonNull};
-use std::sync::atomic::{AtomicBool, Ordering};
-
-use crate::utils::Lazy;
-use log::warn;
-use smol_str::SmolStr;
-#[cfg(wayland_platform)]
-use std::os::unix::io::OwnedFd;
-use xkbcommon_dl::{
-    self as xkb, xkb_compose_status, xkb_context, xkb_context_flags, xkbcommon_compose_handle,
-    xkbcommon_handle, XkbCommon, XkbCommonCompose,
-};
-#[cfg(x11_platform)]
-use {x11_dl::xlib_xcb::xcb_connection_t, xkbcommon_dl::x11::xkbcommon_x11_handle};
-
-use crate::event::ElementState;
-use crate::event::KeyEvent;
-use crate::keyboard::{Key, KeyLocation};
-use crate::platform_impl::KeyEventExtra;
-
-mod compose;
-mod keymap;
-mod state;
-
-use compose::{ComposeStatus, XkbComposeState, XkbComposeTable};
-use keymap::XkbKeymap;
-
-#[cfg(x11_platform)]
-pub use keymap::raw_keycode_to_physicalkey;
-pub use keymap::{physicalkey_to_scancode, scancode_to_physicalkey};
-pub use state::XkbState;
-
-// TODO: Wire this up without using a static `AtomicBool`.
-static RESET_DEAD_KEYS: AtomicBool = AtomicBool::new(false);
-
-static XKBH: Lazy<&'static XkbCommon> = Lazy::new(xkbcommon_handle);
-static XKBCH: Lazy<&'static XkbCommonCompose> = Lazy::new(xkbcommon_compose_handle);
-#[cfg(feature = "x11")]
-static XKBXH: Lazy<&'static xkb::x11::XkbCommonX11> = Lazy::new(xkbcommon_x11_handle);
-
-#[inline(always)]
-pub fn reset_dead_keys() {
-    RESET_DEAD_KEYS.store(true, Ordering::SeqCst);
-}
-
-#[derive(Debug)]
-pub enum Error {
-    /// libxkbcommon is not available
-    XKBNotFound,
-}
-
-#[derive(Debug)]
-pub struct Context {
-    // NOTE: field order matters.
-    #[cfg(x11_platform)]
-    pub core_keyboard_id: i32,
-    state: Option<XkbState>,
-    keymap: Option<XkbKeymap>,
-    compose_state1: Option<XkbComposeState>,
-    compose_state2: Option<XkbComposeState>,
-    _compose_table: Option<XkbComposeTable>,
-    context: XkbContext,
-    scratch_buffer: Vec<u8>,
-}
-
-impl Context {
-    pub fn new() -> Result<Self, Error> {
-        if xkb::xkbcommon_option().is_none() {
-            return Err(Error::XKBNotFound);
-        }
-
-        let context = XkbContext::new()?;
-        let mut compose_table = XkbComposeTable::new(&context);
-        let mut compose_state1 = compose_table.as_ref().and_then(|table| table.new_state());
-        let mut compose_state2 = compose_table.as_ref().and_then(|table| table.new_state());
-
-        // Disable compose if anything compose related failed to initialize.
-        if compose_table.is_none() || compose_state1.is_none() || compose_state2.is_none() {
-            compose_state2 = None;
-            compose_state1 = None;
-            compose_table = None;
-        }
-
-        Ok(Self {
-            state: None,
-            keymap: None,
-            compose_state1,
-            compose_state2,
-            #[cfg(x11_platform)]
-            core_keyboard_id: 0,
-            _compose_table: compose_table,
-            context,
-            scratch_buffer: Vec::with_capacity(8),
-        })
-    }
-
-    #[cfg(feature = "x11")]
-    pub fn from_x11_xkb(xcb: *mut xcb_connection_t) -> Result<Self, Error> {
-        let result = unsafe {
-            (XKBXH.xkb_x11_setup_xkb_extension)(
-                xcb,
-                1,
-                2,
-                xkbcommon_dl::x11::xkb_x11_setup_xkb_extension_flags::XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
-                ptr::null_mut(),
-                ptr::null_mut(),
-                ptr::null_mut(),
-                ptr::null_mut(),
-            )
-        };
-
-        if result != 1 {
-            return Err(Error::XKBNotFound);
-        }
-
-        let mut this = Self::new()?;
-        this.core_keyboard_id = unsafe { (XKBXH.xkb_x11_get_core_keyboard_device_id)(xcb) };
-        this.set_keymap_from_x11(xcb);
-        Ok(this)
-    }
-
-    pub fn state_mut(&mut self) -> Option<&mut XkbState> {
-        self.state.as_mut()
-    }
-
-    pub fn keymap_mut(&mut self) -> Option<&mut XkbKeymap> {
-        self.keymap.as_mut()
-    }
-
-    #[cfg(wayland_platform)]
-    pub fn set_keymap_from_fd(&mut self, fd: OwnedFd, size: usize) {
-        let keymap = XkbKeymap::from_fd(&self.context, fd, size);
-        let state = keymap.as_ref().and_then(XkbState::new_wayland);
-        if keymap.is_none() || state.is_none() {
-            warn!("failed to update xkb keymap");
-        }
-        self.state = state;
-        self.keymap = keymap;
-    }
-
-    #[cfg(x11_platform)]
-    pub fn set_keymap_from_x11(&mut self, xcb: *mut xcb_connection_t) {
-        let keymap = XkbKeymap::from_x11_keymap(&self.context, xcb, self.core_keyboard_id);
-        let state = keymap
-            .as_ref()
-            .and_then(|keymap| XkbState::new_x11(xcb, keymap));
-        if keymap.is_none() || state.is_none() {
-            warn!("failed to update xkb keymap");
-        }
-        self.state = state;
-        self.keymap = keymap;
-    }
-
-    /// Key builder context with the user provided xkb state.
-    pub fn key_context(&mut self) -> Option<KeyContext<'_>> {
-        let state = self.state.as_mut()?;
-        let keymap = self.keymap.as_mut()?;
-        let compose_state1 = self.compose_state1.as_mut();
-        let compose_state2 = self.compose_state2.as_mut();
-        let scratch_buffer = &mut self.scratch_buffer;
-        Some(KeyContext {
-            state,
-            keymap,
-            compose_state1,
-            compose_state2,
-            scratch_buffer,
-        })
-    }
-
-    /// Key builder context with the user provided xkb state.
-    ///
-    /// Should be used when the original context must not be altered.
-    #[cfg(x11_platform)]
-    pub fn key_context_with_state<'a>(
-        &'a mut self,
-        state: &'a mut XkbState,
-    ) -> Option<KeyContext<'a>> {
-        let keymap = self.keymap.as_mut()?;
-        let compose_state1 = self.compose_state1.as_mut();
-        let compose_state2 = self.compose_state2.as_mut();
-        let scratch_buffer = &mut self.scratch_buffer;
-        Some(KeyContext {
-            state,
-            keymap,
-            compose_state1,
-            compose_state2,
-            scratch_buffer,
-        })
-    }
-}
-
-pub struct KeyContext<'a> {
-    pub state: &'a mut XkbState,
-    pub keymap: &'a mut XkbKeymap,
-    compose_state1: Option<&'a mut XkbComposeState>,
-    compose_state2: Option<&'a mut XkbComposeState>,
-    scratch_buffer: &'a mut Vec<u8>,
-}
-
-impl<'a> KeyContext<'a> {
-    pub fn process_key_event(
-        &mut self,
-        keycode: u32,
-        state: ElementState,
-        repeat: bool,
-    ) -> KeyEvent {
-        let mut event =
-            KeyEventResults::new(self, keycode, !repeat && state == ElementState::Pressed);
-        let physical_key = keymap::raw_keycode_to_physicalkey(keycode);
-        let (logical_key, location) = event.key();
-        let text = event.text();
-        let (key_without_modifiers, _) = event.key_without_modifiers();
-        let text_with_all_modifiers = event.text_with_all_modifiers();
-
-        let platform_specific = KeyEventExtra {
-            text_with_all_modifiers,
-            key_without_modifiers,
-        };
-
-        KeyEvent {
-            physical_key,
-            logical_key,
-            text,
-            location,
-            state,
-            repeat,
-            platform_specific,
-        }
-    }
-
-    fn keysym_to_utf8_raw(&mut self, keysym: u32) -> Option<SmolStr> {
-        self.scratch_buffer.clear();
-        self.scratch_buffer.reserve(8);
-        loop {
-            let bytes_written = unsafe {
-                (XKBH.xkb_keysym_to_utf8)(
-                    keysym,
-                    self.scratch_buffer.as_mut_ptr().cast(),
-                    self.scratch_buffer.capacity(),
-                )
-            };
-            if bytes_written == 0 {
-                return None;
-            } else if bytes_written == -1 {
-                self.scratch_buffer.reserve(8);
-            } else {
-                unsafe {
-                    self.scratch_buffer
-                        .set_len(bytes_written.try_into().unwrap())
-                };
-                break;
-            }
-        }
-
-        // Remove the null-terminator
-        self.scratch_buffer.pop();
-        byte_slice_to_smol_str(self.scratch_buffer)
-    }
-}
-
-struct KeyEventResults<'a, 'b> {
-    context: &'a mut KeyContext<'b>,
-    keycode: u32,
-    keysym: u32,
-    compose: ComposeStatus,
-}
-
-impl<'a, 'b> KeyEventResults<'a, 'b> {
-    fn new(context: &'a mut KeyContext<'b>, keycode: u32, compose: bool) -> Self {
-        let keysym = context.state.get_one_sym_raw(keycode);
-
-        let compose = if let Some(state) = context.compose_state1.as_mut().filter(|_| compose) {
-            if RESET_DEAD_KEYS.swap(false, Ordering::SeqCst) {
-                state.reset();
-                context.compose_state2.as_mut().unwrap().reset();
-            }
-            state.feed(keysym)
-        } else {
-            ComposeStatus::None
-        };
-
-        KeyEventResults {
-            context,
-            keycode,
-            keysym,
-            compose,
-        }
-    }
-
-    pub fn key(&mut self) -> (Key, KeyLocation) {
-        let (key, location) = match self.keysym_to_key(self.keysym) {
-            Ok(known) => return known,
-            Err(undefined) => undefined,
-        };
-
-        if let ComposeStatus::Accepted(xkb_compose_status::XKB_COMPOSE_COMPOSING) = self.compose {
-            let compose_state = self.context.compose_state2.as_mut().unwrap();
-            // When pressing a dead key twice, the non-combining variant of that character will
-            // be produced. Since this function only concerns itself with a single keypress, we
-            // simulate this double press here by feeding the keysym to the compose state
-            // twice.
-
-            compose_state.feed(self.keysym);
-            if matches!(compose_state.feed(self.keysym), ComposeStatus::Accepted(_)) {
-                // Extracting only a single `char` here *should* be fine, assuming that no
-                // dead key's non-combining variant ever occupies more than one `char`.
-                let text = compose_state.get_string(self.context.scratch_buffer);
-                let key = Key::Dead(text.and_then(|s| s.chars().next()));
-                (key, location)
-            } else {
-                (key, location)
-            }
-        } else {
-            let key = self
-                .composed_text()
-                .unwrap_or_else(|_| self.context.keysym_to_utf8_raw(self.keysym))
-                .map(Key::Character)
-                .unwrap_or(key);
-            (key, location)
-        }
-    }
-
-    pub fn key_without_modifiers(&mut self) -> (Key, KeyLocation) {
-        // This will become a pointer to an array which libxkbcommon owns, so we don't need to deallocate it.
-        let layout = self.context.state.layout(self.keycode);
-        let keysym = self
-            .context
-            .keymap
-            .first_keysym_by_level(layout, self.keycode);
-
-        match self.keysym_to_key(keysym) {
-            Ok((key, location)) => (key, location),
-            Err((key, location)) => {
-                let key = self
-                    .context
-                    .keysym_to_utf8_raw(keysym)
-                    .map(Key::Character)
-                    .unwrap_or(key);
-                (key, location)
-            }
-        }
-    }
-
-    fn keysym_to_key(&self, keysym: u32) -> Result<(Key, KeyLocation), (Key, KeyLocation)> {
-        let location = keymap::keysym_location(keysym);
-        let key = keymap::keysym_to_key(keysym);
-        if matches!(key, Key::Unidentified(_)) {
-            Err((key, location))
-        } else {
-            Ok((key, location))
-        }
-    }
-
-    pub fn text(&mut self) -> Option<SmolStr> {
-        self.composed_text()
-            .unwrap_or_else(|_| self.context.keysym_to_utf8_raw(self.keysym))
-    }
-
-    // The current behaviour makes it so composing a character overrides attempts to input a
-    // control character with the `Ctrl` key. We can potentially add a configuration option
-    // if someone specifically wants the oppsite behaviour.
-    pub fn text_with_all_modifiers(&mut self) -> Option<SmolStr> {
-        match self.composed_text() {
-            Ok(text) => text,
-            Err(_) => self
-                .context
-                .state
-                .get_utf8_raw(self.keycode, self.context.scratch_buffer),
-        }
-    }
-
-    fn composed_text(&mut self) -> Result<Option<SmolStr>, ()> {
-        match self.compose {
-            ComposeStatus::Accepted(xkb_compose_status::XKB_COMPOSE_COMPOSED) => {
-                let state = self.context.compose_state1.as_mut().unwrap();
-                Ok(state.get_string(self.context.scratch_buffer))
-            }
-            _ => Err(()),
-        }
-    }
-}
-
-#[derive(Debug)]
-pub struct XkbContext {
-    context: NonNull<xkb_context>,
-}
-
-impl XkbContext {
-    pub fn new() -> Result<Self, Error> {
-        let context = unsafe { (XKBH.xkb_context_new)(xkb_context_flags::XKB_CONTEXT_NO_FLAGS) };
-
-        let context = match NonNull::new(context) {
-            Some(context) => context,
-            None => return Err(Error::XKBNotFound),
-        };
-
-        Ok(Self { context })
-    }
-}
-
-impl Drop for XkbContext {
-    fn drop(&mut self) {
-        unsafe {
-            (XKBH.xkb_context_unref)(self.context.as_ptr());
-        }
-    }
-}
-
-impl Deref for XkbContext {
-    type Target = NonNull<xkb_context>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.context
-    }
-}
-
-/// Shared logic for constructing a string with `xkb_compose_state_get_utf8` and
-/// `xkb_state_key_get_utf8`.
-fn make_string_with<F>(scratch_buffer: &mut Vec<u8>, mut f: F) -> Option<SmolStr>
-where
-    F: FnMut(*mut c_char, usize) -> i32,
-{
-    let size = f(ptr::null_mut(), 0);
-    if size == 0 {
-        return None;
-    }
-    let size = usize::try_from(size).unwrap();
-    scratch_buffer.clear();
-    // The allocated buffer must include space for the null-terminator.
-    scratch_buffer.reserve(size + 1);
-    unsafe {
-        let written = f(
-            scratch_buffer.as_mut_ptr().cast(),
-            scratch_buffer.capacity(),
-        );
-        if usize::try_from(written).unwrap() != size {
-            // This will likely never happen.
-            return None;
-        }
-        scratch_buffer.set_len(size);
-    };
-
-    byte_slice_to_smol_str(scratch_buffer)
-}
-
-// NOTE: This is track_caller so we can have more informative line numbers when logging
-#[track_caller]
-fn byte_slice_to_smol_str(bytes: &[u8]) -> Option<SmolStr> {
-    std::str::from_utf8(bytes)
-        .map(SmolStr::new)
-        .map_err(|e| {
-            log::warn!(
-                "UTF-8 received from libxkbcommon ({:?}) was invalid: {e}",
-                bytes
-            )
-        })
-        .ok()
-}

src/platform_impl/linux/common/xkb/state.rs

@@ -1,189 +0,0 @@
-//! XKB state.
-
-use std::os::raw::c_char;
-use std::ptr::NonNull;
-
-use smol_str::SmolStr;
-#[cfg(x11_platform)]
-use x11_dl::xlib_xcb::xcb_connection_t;
-use xkbcommon_dl::{
-    self as xkb, xkb_keycode_t, xkb_keysym_t, xkb_layout_index_t, xkb_state, xkb_state_component,
-};
-
-use crate::platform_impl::common::xkb::keymap::XkbKeymap;
-#[cfg(x11_platform)]
-use crate::platform_impl::common::xkb::XKBXH;
-use crate::platform_impl::common::xkb::{make_string_with, XKBH};
-
-#[derive(Debug)]
-pub struct XkbState {
-    state: NonNull<xkb_state>,
-    modifiers: ModifiersState,
-}
-
-impl XkbState {
-    #[cfg(wayland_platform)]
-    pub fn new_wayland(keymap: &XkbKeymap) -> Option<Self> {
-        let state = NonNull::new(unsafe { (XKBH.xkb_state_new)(keymap.as_ptr()) })?;
-        Some(Self::new_inner(state))
-    }
-
-    #[cfg(x11_platform)]
-    pub fn new_x11(xcb: *mut xcb_connection_t, keymap: &XkbKeymap) -> Option<Self> {
-        let state = unsafe {
-            (XKBXH.xkb_x11_state_new_from_device)(keymap.as_ptr(), xcb, keymap._core_keyboard_id)
-        };
-        let state = NonNull::new(state)?;
-        Some(Self::new_inner(state))
-    }
-
-    fn new_inner(state: NonNull<xkb_state>) -> Self {
-        let modifiers = ModifiersState::default();
-        let mut this = Self { state, modifiers };
-        this.reload_modifiers();
-        this
-    }
-
-    pub fn get_one_sym_raw(&mut self, keycode: xkb_keycode_t) -> xkb_keysym_t {
-        unsafe { (XKBH.xkb_state_key_get_one_sym)(self.state.as_ptr(), keycode) }
-    }
-
-    pub fn layout(&mut self, key: xkb_keycode_t) -> xkb_layout_index_t {
-        unsafe { (XKBH.xkb_state_key_get_layout)(self.state.as_ptr(), key) }
-    }
-
-    #[cfg(x11_platform)]
-    pub fn depressed_modifiers(&mut self) -> xkb::xkb_mod_mask_t {
-        unsafe {
-            (XKBH.xkb_state_serialize_mods)(
-                self.state.as_ptr(),
-                xkb_state_component::XKB_STATE_MODS_DEPRESSED,
-            )
-        }
-    }
-
-    #[cfg(x11_platform)]
-    pub fn latched_modifiers(&mut self) -> xkb::xkb_mod_mask_t {
-        unsafe {
-            (XKBH.xkb_state_serialize_mods)(
-                self.state.as_ptr(),
-                xkb_state_component::XKB_STATE_MODS_LATCHED,
-            )
-        }
-    }
-
-    #[cfg(x11_platform)]
-    pub fn locked_modifiers(&mut self) -> xkb::xkb_mod_mask_t {
-        unsafe {
-            (XKBH.xkb_state_serialize_mods)(
-                self.state.as_ptr(),
-                xkb_state_component::XKB_STATE_MODS_LOCKED,
-            )
-        }
-    }
-
-    pub fn get_utf8_raw(
-        &mut self,
-        keycode: xkb_keycode_t,
-        scratch_buffer: &mut Vec<u8>,
-    ) -> Option<SmolStr> {
-        make_string_with(scratch_buffer, |ptr, len| unsafe {
-            (XKBH.xkb_state_key_get_utf8)(self.state.as_ptr(), keycode, ptr, len)
-        })
-    }
-
-    pub fn modifiers(&self) -> ModifiersState {
-        self.modifiers
-    }
-
-    pub fn update_modifiers(
-        &mut self,
-        mods_depressed: u32,
-        mods_latched: u32,
-        mods_locked: u32,
-        depressed_group: u32,
-        latched_group: u32,
-        locked_group: u32,
-    ) {
-        let mask = unsafe {
-            (XKBH.xkb_state_update_mask)(
-                self.state.as_ptr(),
-                mods_depressed,
-                mods_latched,
-                mods_locked,
-                depressed_group,
-                latched_group,
-                locked_group,
-            )
-        };
-
-        if mask.contains(xkb_state_component::XKB_STATE_MODS_EFFECTIVE) {
-            // Effective value of mods have changed, we need to update our state.
-            self.reload_modifiers();
-        }
-    }
-
-    /// Reload the modifiers.
-    fn reload_modifiers(&mut self) {
-        self.modifiers.ctrl = self.mod_name_is_active(xkb::XKB_MOD_NAME_CTRL);
-        self.modifiers.alt = self.mod_name_is_active(xkb::XKB_MOD_NAME_ALT);
-        self.modifiers.shift = self.mod_name_is_active(xkb::XKB_MOD_NAME_SHIFT);
-        self.modifiers.caps_lock = self.mod_name_is_active(xkb::XKB_MOD_NAME_CAPS);
-        self.modifiers.logo = self.mod_name_is_active(xkb::XKB_MOD_NAME_LOGO);
-        self.modifiers.num_lock = self.mod_name_is_active(xkb::XKB_MOD_NAME_NUM);
-    }
-
-    /// Check if the modifier is active within xkb.
-    fn mod_name_is_active(&mut self, name: &[u8]) -> bool {
-        unsafe {
-            (XKBH.xkb_state_mod_name_is_active)(
-                self.state.as_ptr(),
-                name.as_ptr() as *const c_char,
-                xkb_state_component::XKB_STATE_MODS_EFFECTIVE,
-            ) > 0
-        }
-    }
-}
-
-impl Drop for XkbState {
-    fn drop(&mut self) {
-        unsafe {
-            (XKBH.xkb_state_unref)(self.state.as_ptr());
-        }
-    }
-}
-
-/// Represents the current state of the keyboard modifiers
-///
-/// Each field of this struct represents a modifier and is `true` if this modifier is active.
-///
-/// For some modifiers, this means that the key is currently pressed, others are toggled
-/// (like caps lock).
-#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
-pub struct ModifiersState {
-    /// The "control" key
-    pub ctrl: bool,
-    /// The "alt" key
-    pub alt: bool,
-    /// The "shift" key
-    pub shift: bool,
-    /// The "Caps lock" key
-    pub caps_lock: bool,
-    /// The "logo" key
-    ///
-    /// Also known as the "windows" key on most keyboards
-    pub logo: bool,
-    /// The "Num lock" key
-    pub num_lock: bool,
-}
-
-impl From<ModifiersState> for crate::keyboard::ModifiersState {
-    fn from(mods: ModifiersState) -> crate::keyboard::ModifiersState {
-        let mut to_mods = crate::keyboard::ModifiersState::empty();
-        to_mods.set(crate::keyboard::ModifiersState::SHIFT, mods.shift);
-        to_mods.set(crate::keyboard::ModifiersState::CONTROL, mods.ctrl);
-        to_mods.set(crate::keyboard::ModifiersState::ALT, mods.alt);
-        to_mods.set(crate::keyboard::ModifiersState::SUPER, mods.logo);
-        to_mods
-    }
-}

src/platform_impl/linux/common/xkb_state.rs

@@ -0,0 +1,692 @@
+use std::convert::TryInto;
+use std::env;
+use std::ffi::CString;
+use std::os::raw::c_char;
+use std::os::unix::ffi::OsStringExt;
+use std::ptr;
+use std::sync::atomic::{AtomicBool, Ordering};
+
+use once_cell::sync::Lazy;
+use smol_str::SmolStr;
+use xkbcommon_dl::{
+    self as ffi, xkb_state_component, xkbcommon_compose_handle, xkbcommon_handle, XkbCommon,
+    XkbCommonCompose,
+};
+#[cfg(feature = "wayland")]
+use {memmap2::MmapOptions, std::os::unix::io::OwnedFd};
+#[cfg(feature = "x11")]
+use {x11_dl::xlib_xcb::xcb_connection_t, xkbcommon_dl::x11::xkbcommon_x11_handle};
+
+use crate::event::KeyEvent;
+use crate::platform_impl::common::keymap;
+use crate::platform_impl::KeyEventExtra;
+use crate::{
+    event::ElementState,
+    keyboard::{Key, KeyLocation, PhysicalKey},
+};
+
+// TODO: Wire this up without using a static `AtomicBool`.
+static RESET_DEAD_KEYS: AtomicBool = AtomicBool::new(false);
+
+#[inline(always)]
+pub fn reset_dead_keys() {
+    RESET_DEAD_KEYS.store(true, Ordering::SeqCst);
+}
+
+static XKBH: Lazy<&'static XkbCommon> = Lazy::new(xkbcommon_handle);
+static XKBCH: Lazy<&'static XkbCommonCompose> = Lazy::new(xkbcommon_compose_handle);
+#[cfg(feature = "x11")]
+static XKBXH: Lazy<&'static ffi::x11::XkbCommonX11> = Lazy::new(xkbcommon_x11_handle);
+
+#[derive(Debug)]
+pub struct KbdState {
+    #[cfg(feature = "x11")]
+    xcb_connection: *mut xcb_connection_t,
+    xkb_context: *mut ffi::xkb_context,
+    xkb_keymap: *mut ffi::xkb_keymap,
+    xkb_state: *mut ffi::xkb_state,
+    xkb_compose_table: *mut ffi::xkb_compose_table,
+    xkb_compose_state: *mut ffi::xkb_compose_state,
+    xkb_compose_state_2: *mut ffi::xkb_compose_state,
+    mods_state: ModifiersState,
+    #[cfg(feature = "x11")]
+    pub core_keyboard_id: i32,
+    scratch_buffer: Vec<u8>,
+}
+
+impl KbdState {
+    pub fn update_modifiers(
+        &mut self,
+        mods_depressed: u32,
+        mods_latched: u32,
+        mods_locked: u32,
+        depressed_group: u32,
+        latched_group: u32,
+        locked_group: u32,
+    ) {
+        if !self.ready() {
+            return;
+        }
+        let mask = unsafe {
+            (XKBH.xkb_state_update_mask)(
+                self.xkb_state,
+                mods_depressed,
+                mods_latched,
+                mods_locked,
+                depressed_group,
+                latched_group,
+                locked_group,
+            )
+        };
+        if mask.contains(xkb_state_component::XKB_STATE_MODS_EFFECTIVE) {
+            // effective value of mods have changed, we need to update our state
+            self.mods_state.update_with(self.xkb_state);
+        }
+    }
+
+    pub fn get_one_sym_raw(&mut self, keycode: u32) -> u32 {
+        if !self.ready() {
+            return 0;
+        }
+        unsafe { (XKBH.xkb_state_key_get_one_sym)(self.xkb_state, keycode) }
+    }
+
+    pub fn get_utf8_raw(&mut self, keycode: u32) -> Option<SmolStr> {
+        if !self.ready() {
+            return None;
+        }
+        let xkb_state = self.xkb_state;
+        self.make_string_with({
+            |ptr, len| unsafe { (XKBH.xkb_state_key_get_utf8)(xkb_state, keycode, ptr, len) }
+        })
+    }
+
+    fn compose_feed_normal(&mut self, keysym: u32) -> Option<ffi::xkb_compose_feed_result> {
+        self.compose_feed(self.xkb_compose_state, keysym)
+    }
+
+    fn compose_feed_2(&mut self, keysym: u32) -> Option<ffi::xkb_compose_feed_result> {
+        self.compose_feed(self.xkb_compose_state_2, keysym)
+    }
+
+    fn compose_feed(
+        &mut self,
+        xkb_compose_state: *mut ffi::xkb_compose_state,
+        keysym: u32,
+    ) -> Option<ffi::xkb_compose_feed_result> {
+        if !self.ready() || self.xkb_compose_state.is_null() {
+            return None;
+        }
+        if RESET_DEAD_KEYS.swap(false, Ordering::SeqCst) {
+            unsafe { self.init_compose() };
+        }
+        Some(unsafe { (XKBCH.xkb_compose_state_feed)(xkb_compose_state, keysym) })
+    }
+
+    fn compose_status_normal(&mut self) -> Option<ffi::xkb_compose_status> {
+        self.compose_status(self.xkb_compose_state)
+    }
+
+    fn compose_status(
+        &mut self,
+        xkb_compose_state: *mut ffi::xkb_compose_state,
+    ) -> Option<ffi::xkb_compose_status> {
+        if !self.ready() || xkb_compose_state.is_null() {
+            return None;
+        }
+        Some(unsafe { (XKBCH.xkb_compose_state_get_status)(xkb_compose_state) })
+    }
+
+    fn compose_get_utf8_normal(&mut self) -> Option<SmolStr> {
+        self.compose_get_utf8(self.xkb_compose_state)
+    }
+
+    fn compose_get_utf8_2(&mut self) -> Option<SmolStr> {
+        self.compose_get_utf8(self.xkb_compose_state_2)
+    }
+
+    fn compose_get_utf8(
+        &mut self,
+        xkb_compose_state: *mut ffi::xkb_compose_state,
+    ) -> Option<SmolStr> {
+        if !self.ready() || xkb_compose_state.is_null() {
+            return None;
+        }
+        self.make_string_with(|ptr, len| unsafe {
+            (XKBCH.xkb_compose_state_get_utf8)(xkb_compose_state, ptr, len)
+        })
+    }
+
+    /// Shared logic for constructing a string with `xkb_compose_state_get_utf8` and
+    /// `xkb_state_key_get_utf8`.
+    fn make_string_with<F>(&mut self, mut f: F) -> Option<SmolStr>
+    where
+        F: FnMut(*mut c_char, usize) -> i32,
+    {
+        let size = f(ptr::null_mut(), 0);
+        if size == 0 {
+            return None;
+        }
+        let size = usize::try_from(size).unwrap();
+        self.scratch_buffer.clear();
+        // The allocated buffer must include space for the null-terminator
+        self.scratch_buffer.reserve(size + 1);
+        unsafe {
+            let written = f(
+                self.scratch_buffer.as_mut_ptr().cast(),
+                self.scratch_buffer.capacity(),
+            );
+            if usize::try_from(written).unwrap() != size {
+                // This will likely never happen
+                return None;
+            }
+            self.scratch_buffer.set_len(size);
+        };
+        byte_slice_to_smol_str(&self.scratch_buffer)
+    }
+
+    pub fn new() -> Result<Self, Error> {
+        if ffi::xkbcommon_option().is_none() {
+            return Err(Error::XKBNotFound);
+        }
+
+        let context =
+            unsafe { (XKBH.xkb_context_new)(ffi::xkb_context_flags::XKB_CONTEXT_NO_FLAGS) };
+        if context.is_null() {
+            return Err(Error::XKBNotFound);
+        }
+
+        let mut me = Self {
+            #[cfg(feature = "x11")]
+            xcb_connection: ptr::null_mut(),
+            xkb_context: context,
+            xkb_keymap: ptr::null_mut(),
+            xkb_state: ptr::null_mut(),
+            xkb_compose_table: ptr::null_mut(),
+            xkb_compose_state: ptr::null_mut(),
+            xkb_compose_state_2: ptr::null_mut(),
+            mods_state: ModifiersState::new(),
+            #[cfg(feature = "x11")]
+            core_keyboard_id: 0,
+            scratch_buffer: Vec::new(),
+        };
+
+        unsafe { me.init_compose() };
+
+        Ok(me)
+    }
+
+    #[cfg(feature = "x11")]
+    pub fn from_x11_xkb(connection: *mut xcb_connection_t) -> Result<Self, Error> {
+        let mut me = Self::new()?;
+        me.xcb_connection = connection;
+
+        let result = unsafe {
+            (XKBXH.xkb_x11_setup_xkb_extension)(
+                connection,
+                1,
+                2,
+                xkbcommon_dl::x11::xkb_x11_setup_xkb_extension_flags::XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
+                ptr::null_mut(),
+                ptr::null_mut(),
+                ptr::null_mut(),
+                ptr::null_mut(),
+            )
+        };
+        assert_eq!(result, 1, "Failed to initialize libxkbcommon");
+
+        unsafe { me.init_with_x11_keymap() };
+
+        Ok(me)
+    }
+
+    unsafe fn init_compose(&mut self) {
+        let locale = env::var_os("LC_ALL")
+            .and_then(|v| if v.is_empty() { None } else { Some(v) })
+            .or_else(|| env::var_os("LC_CTYPE"))
+            .and_then(|v| if v.is_empty() { None } else { Some(v) })
+            .or_else(|| env::var_os("LANG"))
+            .and_then(|v| if v.is_empty() { None } else { Some(v) })
+            .unwrap_or_else(|| "C".into());
+        let locale = CString::new(locale.into_vec()).unwrap();
+
+        let compose_table = unsafe {
+            (XKBCH.xkb_compose_table_new_from_locale)(
+                self.xkb_context,
+                locale.as_ptr(),
+                ffi::xkb_compose_compile_flags::XKB_COMPOSE_COMPILE_NO_FLAGS,
+            )
+        };
+
+        if compose_table.is_null() {
+            // init of compose table failed, continue without compose
+            return;
+        }
+
+        let compose_state = unsafe {
+            (XKBCH.xkb_compose_state_new)(
+                compose_table,
+                ffi::xkb_compose_state_flags::XKB_COMPOSE_STATE_NO_FLAGS,
+            )
+        };
+
+        if compose_state.is_null() {
+            // init of compose state failed, continue without compose
+            unsafe { (XKBCH.xkb_compose_table_unref)(compose_table) };
+            return;
+        }
+
+        let compose_state_2 = unsafe {
+            (XKBCH.xkb_compose_state_new)(
+                compose_table,
+                ffi::xkb_compose_state_flags::XKB_COMPOSE_STATE_NO_FLAGS,
+            )
+        };
+
+        if compose_state_2.is_null() {
+            // init of compose state failed, continue without compose
+            unsafe { (XKBCH.xkb_compose_table_unref)(compose_table) };
+            unsafe { (XKBCH.xkb_compose_state_unref)(compose_state) };
+            return;
+        }
+
+        self.xkb_compose_table = compose_table;
+        self.xkb_compose_state = compose_state;
+        self.xkb_compose_state_2 = compose_state_2;
+    }
+
+    unsafe fn post_init(&mut self, state: *mut ffi::xkb_state, keymap: *mut ffi::xkb_keymap) {
+        self.xkb_keymap = keymap;
+        self.xkb_state = state;
+        self.mods_state.update_with(state);
+    }
+
+    unsafe fn de_init(&mut self) {
+        unsafe { (XKBH.xkb_state_unref)(self.xkb_state) };
+        self.xkb_state = ptr::null_mut();
+        unsafe { (XKBH.xkb_keymap_unref)(self.xkb_keymap) };
+        self.xkb_keymap = ptr::null_mut();
+    }
+
+    #[cfg(feature = "x11")]
+    pub unsafe fn init_with_x11_keymap(&mut self) {
+        if !self.xkb_keymap.is_null() {
+            unsafe { self.de_init() };
+        }
+
+        // TODO: Support keyboards other than the "virtual core keyboard device".
+        self.core_keyboard_id =
+            unsafe { (XKBXH.xkb_x11_get_core_keyboard_device_id)(self.xcb_connection) };
+        let keymap = unsafe {
+            (XKBXH.xkb_x11_keymap_new_from_device)(
+                self.xkb_context,
+                self.xcb_connection,
+                self.core_keyboard_id,
+                xkbcommon_dl::xkb_keymap_compile_flags::XKB_KEYMAP_COMPILE_NO_FLAGS,
+            )
+        };
+        if keymap.is_null() {
+            panic!("Failed to get keymap from X11 server.");
+        }
+
+        let state = unsafe {
+            (XKBXH.xkb_x11_state_new_from_device)(
+                keymap,
+                self.xcb_connection,
+                self.core_keyboard_id,
+            )
+        };
+        unsafe { self.post_init(state, keymap) };
+    }
+
+    #[cfg(feature = "wayland")]
+    pub unsafe fn init_with_fd(&mut self, fd: OwnedFd, size: usize) {
+        if !self.xkb_keymap.is_null() {
+            unsafe { self.de_init() };
+        }
+
+        let map = unsafe {
+            MmapOptions::new()
+                .len(size)
+                .map_copy_read_only(&fd)
+                .unwrap()
+        };
+
+        let keymap = unsafe {
+            (XKBH.xkb_keymap_new_from_string)(
+                self.xkb_context,
+                map.as_ptr() as *const _,
+                ffi::xkb_keymap_format::XKB_KEYMAP_FORMAT_TEXT_V1,
+                ffi::xkb_keymap_compile_flags::XKB_KEYMAP_COMPILE_NO_FLAGS,
+            )
+        };
+
+        if keymap.is_null() {
+            panic!("Received invalid keymap from compositor.");
+        }
+
+        let state = unsafe { (XKBH.xkb_state_new)(keymap) };
+        unsafe { self.post_init(state, keymap) };
+    }
+
+    pub fn key_repeats(&mut self, keycode: ffi::xkb_keycode_t) -> bool {
+        unsafe { (XKBH.xkb_keymap_key_repeats)(self.xkb_keymap, keycode) == 1 }
+    }
+
+    #[inline]
+    pub fn ready(&self) -> bool {
+        !self.xkb_state.is_null()
+    }
+
+    #[inline]
+    pub fn mods_state(&self) -> ModifiersState {
+        self.mods_state
+    }
+
+    pub fn process_key_event(
+        &mut self,
+        keycode: u32,
+        state: ElementState,
+        repeat: bool,
+    ) -> KeyEvent {
+        let mut event =
+            KeyEventResults::new(self, keycode, !repeat && state == ElementState::Pressed);
+        let physical_key = event.physical_key();
+        let (logical_key, location) = event.key();
+        let text = event.text();
+        let (key_without_modifiers, _) = event.key_without_modifiers();
+        let text_with_all_modifiers = event.text_with_all_modifiers();
+
+        let platform_specific = KeyEventExtra {
+            text_with_all_modifiers,
+            key_without_modifiers,
+        };
+
+        KeyEvent {
+            physical_key,
+            logical_key,
+            text,
+            location,
+            state,
+            repeat,
+            platform_specific,
+        }
+    }
+
+    fn keysym_to_utf8_raw(&mut self, keysym: u32) -> Option<SmolStr> {
+        self.scratch_buffer.clear();
+        self.scratch_buffer.reserve(8);
+        loop {
+            let bytes_written = unsafe {
+                (XKBH.xkb_keysym_to_utf8)(
+                    keysym,
+                    self.scratch_buffer.as_mut_ptr().cast(),
+                    self.scratch_buffer.capacity(),
+                )
+            };
+            if bytes_written == 0 {
+                return None;
+            } else if bytes_written == -1 {
+                self.scratch_buffer.reserve(8);
+            } else {
+                unsafe {
+                    self.scratch_buffer
+                        .set_len(bytes_written.try_into().unwrap())
+                };
+                break;
+            }
+        }
+
+        // Remove the null-terminator
+        self.scratch_buffer.pop();
+        byte_slice_to_smol_str(&self.scratch_buffer)
+    }
+}
+
+impl Drop for KbdState {
+    fn drop(&mut self) {
+        unsafe {
+            if !self.xkb_compose_state.is_null() {
+                (XKBCH.xkb_compose_state_unref)(self.xkb_compose_state);
+            }
+            if !self.xkb_compose_state_2.is_null() {
+                (XKBCH.xkb_compose_state_unref)(self.xkb_compose_state_2);
+            }
+            if !self.xkb_compose_table.is_null() {
+                (XKBCH.xkb_compose_table_unref)(self.xkb_compose_table);
+            }
+            if !self.xkb_state.is_null() {
+                (XKBH.xkb_state_unref)(self.xkb_state);
+            }
+            if !self.xkb_keymap.is_null() {
+                (XKBH.xkb_keymap_unref)(self.xkb_keymap);
+            }
+            (XKBH.xkb_context_unref)(self.xkb_context);
+        }
+    }
+}
+
+struct KeyEventResults<'a> {
+    state: &'a mut KbdState,
+    keycode: u32,
+    keysym: u32,
+    compose: Option<XkbCompose>,
+}
+
+impl<'a> KeyEventResults<'a> {
+    fn new(state: &'a mut KbdState, keycode: u32, compose: bool) -> Self {
+        let keysym = state.get_one_sym_raw(keycode);
+
+        let compose = if compose {
+            Some(match state.compose_feed_normal(keysym) {
+                Some(ffi::xkb_compose_feed_result::XKB_COMPOSE_FEED_ACCEPTED) => {
+                    // Unwrapping is safe here, as `compose_feed` returns `None` when composition is uninitialized.
+                    XkbCompose::Accepted(state.compose_status_normal().unwrap())
+                }
+                Some(ffi::xkb_compose_feed_result::XKB_COMPOSE_FEED_IGNORED) => XkbCompose::Ignored,
+                None => XkbCompose::Uninitialized,
+            })
+        } else {
+            None
+        };
+
+        KeyEventResults {
+            state,
+            keycode,
+            keysym,
+            compose,
+        }
+    }
+
+    fn physical_key(&self) -> PhysicalKey {
+        keymap::raw_keycode_to_physicalkey(self.keycode)
+    }
+
+    pub fn key(&mut self) -> (Key, KeyLocation) {
+        self.keysym_to_key(self.keysym)
+            .unwrap_or_else(|(key, location)| match self.compose {
+                Some(XkbCompose::Accepted(ffi::xkb_compose_status::XKB_COMPOSE_COMPOSING)) => {
+                    // When pressing a dead key twice, the non-combining variant of that character will be
+                    // produced. Since this function only concerns itself with a single keypress, we simulate
+                    // this double press here by feeding the keysym to the compose state twice.
+                    self.state.compose_feed_2(self.keysym);
+                    match self.state.compose_feed_2(self.keysym) {
+                        Some(ffi::xkb_compose_feed_result::XKB_COMPOSE_FEED_ACCEPTED) => (
+                            // Extracting only a single `char` here *should* be fine, assuming that no dead
+                            // key's non-combining variant ever occupies more than one `char`.
+                            Key::Dead(
+                                self.state
+                                    .compose_get_utf8_2()
+                                    .map(|s| s.chars().next().unwrap()),
+                            ),
+                            location,
+                        ),
+                        _ => (key, location),
+                    }
+                }
+                _ => (
+                    self.composed_text()
+                        .unwrap_or_else(|_| self.state.keysym_to_utf8_raw(self.keysym))
+                        .map(Key::Character)
+                        .unwrap_or(key),
+                    location,
+                ),
+            })
+    }
+
+    pub fn key_without_modifiers(&mut self) -> (Key, KeyLocation) {
+        // This will become a pointer to an array which libxkbcommon owns, so we don't need to deallocate it.
+        let mut keysyms = ptr::null();
+        let keysym_count = unsafe {
+            let layout = (XKBH.xkb_state_key_get_layout)(self.state.xkb_state, self.keycode);
+            (XKBH.xkb_keymap_key_get_syms_by_level)(
+                self.state.xkb_keymap,
+                self.keycode,
+                layout,
+                // NOTE: The level should be zero to ignore modifiers.
+                0,
+                &mut keysyms,
+            )
+        };
+        let keysym = if keysym_count == 1 {
+            unsafe { *keysyms }
+        } else {
+            0
+        };
+
+        self.keysym_to_key(keysym)
+            .unwrap_or_else(|(key, location)| {
+                (
+                    self.state
+                        .keysym_to_utf8_raw(keysym)
+                        .map(Key::Character)
+                        .unwrap_or(key),
+                    location,
+                )
+            })
+    }
+
+    fn keysym_to_key(&self, keysym: u32) -> Result<(Key, KeyLocation), (Key, KeyLocation)> {
+        let location = super::keymap::keysym_location(keysym);
+        let key = super::keymap::keysym_to_key(keysym);
+        if matches!(key, Key::Unidentified(_)) {
+            Err((key, location))
+        } else {
+            Ok((key, location))
+        }
+    }
+
+    pub fn text(&mut self) -> Option<SmolStr> {
+        self.composed_text()
+            .unwrap_or_else(|_| self.state.keysym_to_utf8_raw(self.keysym))
+    }
+
+    pub fn text_with_all_modifiers(&mut self) -> Option<SmolStr> {
+        // The current behaviour makes it so composing a character overrides attempts to input a
+        // control character with the `Ctrl` key. We can potentially add a configuration option
+        // if someone specifically wants the oppsite behaviour.
+        self.composed_text()
+            .unwrap_or_else(|_| self.state.get_utf8_raw(self.keycode))
+    }
+
+    fn composed_text(&mut self) -> Result<Option<SmolStr>, ()> {
+        if let Some(compose) = &self.compose {
+            match compose {
+                XkbCompose::Accepted(status) => match status {
+                    ffi::xkb_compose_status::XKB_COMPOSE_COMPOSED => {
+                        Ok(self.state.compose_get_utf8_normal())
+                    }
+                    ffi::xkb_compose_status::XKB_COMPOSE_NOTHING => Err(()),
+                    _ => Ok(None),
+                },
+                XkbCompose::Ignored | XkbCompose::Uninitialized => Err(()),
+            }
+        } else {
+            Err(())
+        }
+    }
+}
+
+/// Represents the current state of the keyboard modifiers
+///
+/// Each field of this struct represents a modifier and is `true` if this modifier is active.
+///
+/// For some modifiers, this means that the key is currently pressed, others are toggled
+/// (like caps lock).
+#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
+pub struct ModifiersState {
+    /// The "control" key
+    pub ctrl: bool,
+    /// The "alt" key
+    pub alt: bool,
+    /// The "shift" key
+    pub shift: bool,
+    /// The "Caps lock" key
+    pub caps_lock: bool,
+    /// The "logo" key
+    ///
+    /// Also known as the "windows" key on most keyboards
+    pub logo: bool,
+    /// The "Num lock" key
+    pub num_lock: bool,
+}
+
+impl ModifiersState {
+    fn new() -> Self {
+        Self::default()
+    }
+
+    fn update_with(&mut self, state: *mut ffi::xkb_state) {
+        let mod_name_is_active = |mod_name: &[u8]| unsafe {
+            (XKBH.xkb_state_mod_name_is_active)(
+                state,
+                mod_name.as_ptr() as *const c_char,
+                xkb_state_component::XKB_STATE_MODS_EFFECTIVE,
+            ) > 0
+        };
+        self.ctrl = mod_name_is_active(ffi::XKB_MOD_NAME_CTRL);
+        self.alt = mod_name_is_active(ffi::XKB_MOD_NAME_ALT);
+        self.shift = mod_name_is_active(ffi::XKB_MOD_NAME_SHIFT);
+        self.caps_lock = mod_name_is_active(ffi::XKB_MOD_NAME_CAPS);
+        self.logo = mod_name_is_active(ffi::XKB_MOD_NAME_LOGO);
+        self.num_lock = mod_name_is_active(ffi::XKB_MOD_NAME_NUM);
+    }
+}
+
+impl From<ModifiersState> for crate::keyboard::ModifiersState {
+    fn from(mods: ModifiersState) -> crate::keyboard::ModifiersState {
+        let mut to_mods = crate::keyboard::ModifiersState::empty();
+        to_mods.set(crate::keyboard::ModifiersState::SHIFT, mods.shift);
+        to_mods.set(crate::keyboard::ModifiersState::CONTROL, mods.ctrl);
+        to_mods.set(crate::keyboard::ModifiersState::ALT, mods.alt);
+        to_mods.set(crate::keyboard::ModifiersState::SUPER, mods.logo);
+        to_mods
+    }
+}
+
+#[derive(Debug)]
+pub enum Error {
+    /// libxkbcommon is not available
+    XKBNotFound,
+}
+
+#[derive(Copy, Clone, Debug)]
+enum XkbCompose {
+    Accepted(ffi::xkb_compose_status),
+    Ignored,
+    Uninitialized,
+}
+
+// Note: This is track_caller so we can have more informative line numbers when logging
+#[track_caller]
+fn byte_slice_to_smol_str(bytes: &[u8]) -> Option<SmolStr> {
+    std::str::from_utf8(bytes)
+        .map(SmolStr::new)
+        .map_err(|e| {
+            log::warn!(
+                "UTF-8 received from libxkbcommon ({:?}) was invalid: {e}",
+                bytes
+            )
+        })
+        .ok()
+}

src/platform_impl/linux/mod.rs

@@ -11,19 +11,19 @@ use std::{collections::VecDeque, env, fmt};
 use std::{ffi::CStr, mem::MaybeUninit, os::raw::*, sync::Mutex};
 
 #[cfg(x11_platform)]
-use crate::utils::Lazy;
+use once_cell::sync::Lazy;
 use smol_str::SmolStr;
 
 #[cfg(x11_platform)]
 use self::x11::{X11Error, XConnection, XError, XNotSupported};
 #[cfg(x11_platform)]
 use crate::platform::x11::{WindowType as XWindowType, XlibErrorHook};
-use crate::window::{CustomCursor, CustomCursorSource};
 use crate::{
     dpi::{PhysicalPosition, PhysicalSize, Position, Size},
     error::{EventLoopError, ExternalError, NotSupportedError, OsError as RootOsError},
     event_loop::{
-        ActiveEventLoop as RootELW, AsyncRequestSerial, ControlFlow, DeviceEvents, EventLoopClosed,
+        AsyncRequestSerial, ControlFlow, DeviceEvents, EventLoopClosed,
+        EventLoopWindowTarget as RootELW,
     },
     icon::Icon,
     keyboard::Key,
@@ -34,8 +34,8 @@ use crate::{
     },
 };
 
-pub(crate) use self::common::xkb::{physicalkey_to_scancode, scancode_to_physicalkey};
+pub(crate) use self::common::keymap::{physicalkey_to_scancode, scancode_to_physicalkey};
-pub(crate) use crate::cursor::OnlyCursorImageSource as PlatformCustomCursorSource;
+pub(crate) use crate::cursor::OnlyCursorImageBuilder as PlatformCustomCursorBuilder;
 pub(crate) use crate::icon::RgbaIcon as PlatformIcon;
 pub(crate) use crate::platform_impl::Fullscreen;
 
@@ -72,16 +72,16 @@ impl ApplicationName {
 }
 
 #[derive(Clone, Debug)]
-pub struct PlatformSpecificWindowAttributes {
+pub struct PlatformSpecificWindowBuilderAttributes {
     pub name: Option<ApplicationName>,
     pub activation_token: Option<ActivationToken>,
     #[cfg(x11_platform)]
-    pub x11: X11WindowAttributes,
+    pub x11: X11WindowBuilderAttributes,
 }
 
 #[derive(Clone, Debug)]
 #[cfg(x11_platform)]
-pub struct X11WindowAttributes {
+pub struct X11WindowBuilderAttributes {
     pub visual_id: Option<x11rb::protocol::xproto::Visualid>,
     pub screen_id: Option<i32>,
     pub base_size: Option<Size>,
@@ -92,13 +92,13 @@ pub struct X11WindowAttributes {
     pub embed_window: Option<x11rb::protocol::xproto::Window>,
 }
 
-impl Default for PlatformSpecificWindowAttributes {
+impl Default for PlatformSpecificWindowBuilderAttributes {
     fn default() -> Self {
         Self {
             name: None,
             activation_token: None,
             #[cfg(x11_platform)]
-            x11: X11WindowAttributes {
+            x11: X11WindowBuilderAttributes {
                 visual_id: None,
                 screen_id: None,
                 base_size: None,
@@ -286,16 +286,16 @@ impl VideoModeHandle {
 impl Window {
     #[inline]
     pub(crate) fn new(
-        window_target: &ActiveEventLoop,
+        window_target: &EventLoopWindowTarget,
         attribs: WindowAttributes,
     ) -> Result<Self, RootOsError> {
         match *window_target {
             #[cfg(wayland_platform)]
-            ActiveEventLoop::Wayland(ref window_target) => {
+            EventLoopWindowTarget::Wayland(ref window_target) => {
                 wayland::Window::new(window_target, attribs).map(Window::Wayland)
             }
             #[cfg(x11_platform)]
-            ActiveEventLoop::X(ref window_target) => {
+            EventLoopWindowTarget::X(ref window_target) => {
                 x11::Window::new(window_target, attribs).map(Window::X)
             }
         }
@@ -516,7 +516,7 @@ impl Window {
 
     #[inline]
     pub fn reset_dead_keys(&self) {
-        common::xkb::reset_dead_keys()
+        common::xkb_state::reset_dead_keys()
     }
 
     #[inline]
@@ -644,10 +644,26 @@ pub(crate) enum PlatformCustomCursor {
     #[cfg(x11_platform)]
     X(x11::CustomCursor),
 }
+impl PlatformCustomCursor {
+    pub(crate) fn build(
+        builder: PlatformCustomCursorBuilder,
+        p: &EventLoopWindowTarget,
+    ) -> PlatformCustomCursor {
+        match p {
+            #[cfg(wayland_platform)]
+            EventLoopWindowTarget::Wayland(_) => {
+                Self::Wayland(wayland::CustomCursor::build(builder, p))
+            }
+            #[cfg(x11_platform)]
+            EventLoopWindowTarget::X(p) => Self::X(x11::CustomCursor::build(builder, p)),
+        }
+    }
+}
 
 /// Hooks for X11 errors.
 #[cfg(x11_platform)]
-pub(crate) static mut XLIB_ERROR_HOOKS: Mutex<Vec<XlibErrorHook>> = Mutex::new(Vec::new());
+pub(crate) static mut XLIB_ERROR_HOOKS: Lazy<Mutex<Vec<XlibErrorHook>>> =
+    Lazy::new(|| Mutex::new(Vec::new()));
 
 #[cfg(x11_platform)]
 unsafe extern "C" fn x_error_callback(
@@ -813,7 +829,7 @@ impl<T: 'static> EventLoop<T> {
         x11_or_wayland!(match self; EventLoop(evlp) => evlp.pump_events(timeout, callback))
     }
 
-    pub fn window_target(&self) -> &crate::event_loop::ActiveEventLoop {
+    pub fn window_target(&self) -> &crate::event_loop::EventLoopWindowTarget {
         x11_or_wayland!(match self; EventLoop(evlp) => evlp.window_target())
     }
 }
@@ -836,38 +852,34 @@ impl<T: 'static> EventLoopProxy<T> {
     }
 }
 
-pub enum ActiveEventLoop {
+pub enum EventLoopWindowTarget {
     #[cfg(wayland_platform)]
-    Wayland(wayland::ActiveEventLoop),
+    Wayland(wayland::EventLoopWindowTarget),
     #[cfg(x11_platform)]
-    X(x11::ActiveEventLoop),
+    X(x11::EventLoopWindowTarget),
 }
 
-impl ActiveEventLoop {
+impl EventLoopWindowTarget {
     #[inline]
     pub fn is_wayland(&self) -> bool {
         match *self {
             #[cfg(wayland_platform)]
-            ActiveEventLoop::Wayland(_) => true,
+            EventLoopWindowTarget::Wayland(_) => true,
             #[cfg(x11_platform)]
             _ => false,
         }
     }
 
-    pub fn create_custom_cursor(&self, cursor: CustomCursorSource) -> CustomCursor {
-        x11_or_wayland!(match self; ActiveEventLoop(evlp) => evlp.create_custom_cursor(cursor))
-    }
-
     #[inline]
     pub fn available_monitors(&self) -> VecDeque<MonitorHandle> {
         match *self {
             #[cfg(wayland_platform)]
-            ActiveEventLoop::Wayland(ref evlp) => evlp
+            EventLoopWindowTarget::Wayland(ref evlp) => evlp
                 .available_monitors()
                 .map(MonitorHandle::Wayland)
                 .collect(),
             #[cfg(x11_platform)]
-            ActiveEventLoop::X(ref evlp) => {
+            EventLoopWindowTarget::X(ref evlp) => {
                 evlp.available_monitors().map(MonitorHandle::X).collect()
             }
         }
@@ -876,7 +888,7 @@ impl ActiveEventLoop {
     #[inline]
     pub fn primary_monitor(&self) -> Option<MonitorHandle> {
         Some(
-            x11_or_wayland!(match self; ActiveEventLoop(evlp) => evlp.primary_monitor()?; as MonitorHandle),
+            x11_or_wayland!(match self; EventLoopWindowTarget(evlp) => evlp.primary_monitor()?; as MonitorHandle),
         )
     }
 

src/platform_impl/linux/wayland/event_loop/mod.rs

@@ -10,22 +10,21 @@ use std::sync::atomic::Ordering;
 use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant};
 
+use sctk::reexports::calloop;
 use sctk::reexports::calloop::Error as CalloopError;
 use sctk::reexports::calloop_wayland_source::WaylandSource;
 use sctk::reexports::client::globals;
 use sctk::reexports::client::{Connection, QueueHandle};
 
-use crate::cursor::OnlyCursorImage;
 use crate::dpi::LogicalSize;
 use crate::error::{EventLoopError, OsError as RootOsError};
 use crate::event::{Event, InnerSizeWriter, StartCause, WindowEvent};
-use crate::event_loop::{ActiveEventLoop as RootActiveEventLoop, ControlFlow, DeviceEvents};
+use crate::event_loop::{
+    ControlFlow, DeviceEvents, EventLoopWindowTarget as RootEventLoopWindowTarget,
+};
 use crate::platform::pump_events::PumpStatus;
 use crate::platform_impl::platform::min_timeout;
-use crate::platform_impl::{
+use crate::platform_impl::{EventLoopWindowTarget as PlatformEventLoopWindowTarget, OsError};
-    ActiveEventLoop as PlatformActiveEventLoop, OsError, PlatformCustomCursor,
-};
-use crate::window::{CustomCursor as RootCustomCursor, CustomCursorSource};
 
 mod proxy;
 pub mod sink;
@@ -64,7 +63,7 @@ pub struct EventLoop<T: 'static> {
     connection: Connection,
 
     /// Event loop window target.
-    window_target: RootActiveEventLoop,
+    window_target: RootEventLoopWindowTarget,
 
     // XXX drop after everything else, just to be safe.
     /// Calloop's event loop.
@@ -160,7 +159,7 @@ impl<T: 'static> EventLoop<T> {
             .map_err(|error| error.error);
         map_err!(result, WaylandError::Calloop)?;
 
-        let window_target = ActiveEventLoop {
+        let window_target = EventLoopWindowTarget {
             connection: connection.clone(),
             wayland_dispatcher: wayland_dispatcher.clone(),
             event_loop_awakener,
@@ -180,8 +179,8 @@ impl<T: 'static> EventLoop<T> {
             user_events_sender,
             pending_user_events,
             event_loop,
-            window_target: RootActiveEventLoop {
+            window_target: RootEventLoopWindowTarget {
-                p: PlatformActiveEventLoop::Wayland(window_target),
+                p: PlatformEventLoopWindowTarget::Wayland(window_target),
                 _marker: PhantomData,
             },
         };
@@ -191,7 +190,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run_on_demand<F>(&mut self, mut event_handler: F) -> Result<(), EventLoopError>
     where
-        F: FnMut(Event<T>, &RootActiveEventLoop),
+        F: FnMut(Event<T>, &RootEventLoopWindowTarget),
     {
         let exit = loop {
             match self.pump_events(None, &mut event_handler) {
@@ -218,7 +217,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn pump_events<F>(&mut self, timeout: Option<Duration>, mut callback: F) -> PumpStatus
     where
-        F: FnMut(Event<T>, &RootActiveEventLoop),
+        F: FnMut(Event<T>, &RootEventLoopWindowTarget),
     {
         if !self.loop_running {
             self.loop_running = true;
@@ -245,7 +244,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn poll_events_with_timeout<F>(&mut self, mut timeout: Option<Duration>, mut callback: F)
     where
-        F: FnMut(Event<T>, &RootActiveEventLoop),
+        F: FnMut(Event<T>, &RootEventLoopWindowTarget),
     {
         let cause = loop {
             let start = Instant::now();
@@ -321,7 +320,7 @@ impl<T: 'static> EventLoop<T> {
 
     fn single_iteration<F>(&mut self, callback: &mut F, cause: StartCause)
     where
-        F: FnMut(Event<T>, &RootActiveEventLoop),
+        F: FnMut(Event<T>, &RootEventLoopWindowTarget),
     {
         // NOTE currently just indented to simplify the diff
 
@@ -543,11 +542,11 @@ impl<T: 'static> EventLoop<T> {
         // we can't do much about it.
         if wake_up {
             match &self.window_target.p {
-                PlatformActiveEventLoop::Wayland(window_target) => {
+                PlatformEventLoopWindowTarget::Wayland(window_target) => {
                     window_target.event_loop_awakener.ping();
                 }
                 #[cfg(x11_platform)]
-                PlatformActiveEventLoop::X(_) => unreachable!(),
+                PlatformEventLoopWindowTarget::X(_) => unreachable!(),
             }
         }
 
@@ -562,13 +561,13 @@ impl<T: 'static> EventLoop<T> {
     }
 
     #[inline]
-    pub fn window_target(&self) -> &RootActiveEventLoop {
+    pub fn window_target(&self) -> &RootEventLoopWindowTarget {
         &self.window_target
     }
 
     fn with_state<'a, U: 'a, F: FnOnce(&'a mut WinitState) -> U>(&'a mut self, callback: F) -> U {
         let state = match &mut self.window_target.p {
-            PlatformActiveEventLoop::Wayland(window_target) => window_target.state.get_mut(),
+            PlatformEventLoopWindowTarget::Wayland(window_target) => window_target.state.get_mut(),
             #[cfg(x11_platform)]
             _ => unreachable!(),
         };
@@ -578,7 +577,7 @@ impl<T: 'static> EventLoop<T> {
 
     fn loop_dispatch<D: Into<Option<std::time::Duration>>>(&mut self, timeout: D) -> IOResult<()> {
         let state = match &mut self.window_target.p {
-            PlatformActiveEventLoop::Wayland(window_target) => window_target.state.get_mut(),
+            PlatformEventLoopWindowTarget::Wayland(window_target) => window_target.state.get_mut(),
             #[cfg(feature = "x11")]
             _ => unreachable!(),
         };
@@ -591,7 +590,7 @@ impl<T: 'static> EventLoop<T> {
 
     fn roundtrip(&mut self) -> Result<usize, RootOsError> {
         let state = match &mut self.window_target.p {
-            PlatformActiveEventLoop::Wayland(window_target) => window_target.state.get_mut(),
+            PlatformEventLoopWindowTarget::Wayland(window_target) => window_target.state.get_mut(),
             #[cfg(feature = "x11")]
             _ => unreachable!(),
         };
@@ -634,7 +633,7 @@ impl<T> AsRawFd for EventLoop<T> {
     }
 }
 
-pub struct ActiveEventLoop {
+pub struct EventLoopWindowTarget {
     /// The event loop wakeup source.
     pub event_loop_awakener: calloop::ping::Ping,
 
@@ -658,7 +657,7 @@ pub struct ActiveEventLoop {
     pub connection: Connection,
 }
 
-impl ActiveEventLoop {
+impl EventLoopWindowTarget {
     pub(crate) fn set_control_flow(&self, control_flow: ControlFlow) {
         self.control_flow.set(control_flow)
     }
@@ -690,12 +689,6 @@ impl ActiveEventLoop {
     #[inline]
     pub fn listen_device_events(&self, _allowed: DeviceEvents) {}
 
-    pub(crate) fn create_custom_cursor(&self, cursor: CustomCursorSource) -> RootCustomCursor {
-        RootCustomCursor {
-            inner: PlatformCustomCursor::Wayland(OnlyCursorImage(Arc::from(cursor.inner.0))),
-        }
-    }
-
     #[cfg(feature = "rwh_05")]
     #[inline]
     pub fn raw_display_handle_rwh_05(&self) -> rwh_05::RawDisplayHandle {

src/platform_impl/linux/wayland/mod.rs

@@ -12,7 +12,7 @@ use sctk::reexports::client::{self, ConnectError, DispatchError, Proxy};
 pub(super) use crate::cursor::OnlyCursorImage as CustomCursor;
 use crate::dpi::{LogicalSize, PhysicalSize};
 pub use crate::platform_impl::platform::{OsError, WindowId};
-pub use event_loop::{ActiveEventLoop, EventLoop, EventLoopProxy};
+pub use event_loop::{EventLoop, EventLoopProxy, EventLoopWindowTarget};
 pub use output::{MonitorHandle, VideoModeHandle};
 pub use window::Window;
 

src/platform_impl/linux/wayland/output.rs

@@ -6,9 +6,9 @@ use sctk::output::OutputData;
 use crate::dpi::{LogicalPosition, PhysicalPosition, PhysicalSize};
 use crate::platform_impl::platform::VideoModeHandle as PlatformVideoModeHandle;
 
-use super::event_loop::ActiveEventLoop;
+use super::event_loop::EventLoopWindowTarget;
 
-impl ActiveEventLoop {
+impl EventLoopWindowTarget {
     #[inline]
     pub fn available_monitors(&self) -> impl Iterator<Item = MonitorHandle> {
         self.state

src/platform_impl/linux/wayland/seat/keyboard/mod.rs

@@ -17,7 +17,7 @@ use sctk::reexports::client::{Connection, Dispatch, Proxy, QueueHandle, WEnum};
 use crate::event::{ElementState, WindowEvent};
 use crate::keyboard::ModifiersState;
 
-use crate::platform_impl::common::xkb::Context;
+use crate::platform_impl::common::xkb_state::KbdState;
 use crate::platform_impl::wayland::event_loop::sink::EventSink;
 use crate::platform_impl::wayland::seat::WinitSeatState;
 use crate::platform_impl::wayland::state::WinitState;
@@ -43,10 +43,14 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                     WlKeymapFormat::NoKeymap => {
                         warn!("non-xkb compatible keymap")
                     }
-                    WlKeymapFormat::XkbV1 => {
+                    WlKeymapFormat::XkbV1 => unsafe {
-                        let context = &mut seat_state.keyboard_state.as_mut().unwrap().xkb_context;
+                        seat_state
-                        context.set_keymap_from_fd(fd, size as usize);
+                            .keyboard_state
-                    }
+                            .as_mut()
+                            .unwrap()
+                            .xkb_state
+                            .init_with_fd(fd, size as usize);
+                    },
                     _ => unreachable!(),
                 },
                 WEnum::Unknown(value) => {
@@ -151,12 +155,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                     RepeatInfo::Disable => return,
                 };
 
-                if !keyboard_state
+                if !keyboard_state.xkb_state.key_repeats(key) {
-                    .xkb_context
-                    .keymap_mut()
-                    .unwrap()
-                    .key_repeats(key)
-                {
                     return;
                 }
 
@@ -222,11 +221,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
 
                 let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
                 if keyboard_state.repeat_info != RepeatInfo::Disable
-                    && keyboard_state
+                    && keyboard_state.xkb_state.key_repeats(key)
-                        .xkb_context
-                        .keymap_mut()
-                        .unwrap()
-                        .key_repeats(key)
                     && Some(key) == keyboard_state.current_repeat
                 {
                     keyboard_state.current_repeat = None;
@@ -242,14 +237,9 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                 group,
                 ..
             } => {
-                let xkb_context = &mut seat_state.keyboard_state.as_mut().unwrap().xkb_context;
+                let xkb_state = &mut seat_state.keyboard_state.as_mut().unwrap().xkb_state;
-                let xkb_state = match xkb_context.state_mut() {
-                    Some(state) => state,
-                    None => return,
-                };
-
                 xkb_state.update_modifiers(mods_depressed, mods_latched, mods_locked, 0, 0, group);
-                seat_state.modifiers = xkb_state.modifiers().into();
+                seat_state.modifiers = xkb_state.mods_state().into();
 
                 // HACK: part of the workaround from `WlKeyboardEvent::Enter`.
                 let window_id = match *data.window_id.lock().unwrap() {
@@ -295,7 +285,7 @@ pub struct KeyboardState {
     pub loop_handle: LoopHandle<'static, WinitState>,
 
     /// The state of the keyboard.
-    pub xkb_context: Context,
+    pub xkb_state: KbdState,
 
     /// The information about the repeat rate obtained from the compositor.
     pub repeat_info: RepeatInfo,
@@ -312,7 +302,7 @@ impl KeyboardState {
         Self {
             keyboard,
             loop_handle,
-            xkb_context: Context::new().unwrap(),
+            xkb_state: KbdState::new().unwrap(),
             repeat_info: RepeatInfo::default(),
             repeat_token: None,
             current_repeat: None,
@@ -395,13 +385,16 @@ fn key_input(
     let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
 
     let device_id = crate::event::DeviceId(crate::platform_impl::DeviceId::Wayland(DeviceId));
-    if let Some(mut key_context) = keyboard_state.xkb_context.key_context() {
+    let event = keyboard_state
-        let event = key_context.process_key_event(keycode, state, repeat);
+        .xkb_state
-        let event = WindowEvent::KeyboardInput {
+        .process_key_event(keycode, state, repeat);
+
+    event_sink.push_window_event(
+        WindowEvent::KeyboardInput {
             device_id,
             event,
             is_synthetic: false,
-        };
+        },
-        event_sink.push_window_event(event, window_id);
+        window_id,
-    }
+    );
 }

src/platform_impl/linux/wayland/seat/mod.rs

@@ -54,7 +54,7 @@ pub struct WinitSeatState {
     /// The current modifiers state on the seat.
     modifiers: ModifiersState,
 
-    /// Whether we have pending modifiers.
+    /// Wether we have pending modifiers.
     modifiers_pending: bool,
 }
 

src/platform_impl/linux/wayland/seat/pointer/mod.rs

@@ -196,7 +196,7 @@ impl PointerHandler for WinitState {
                         TouchPhase::Ended
                     } else {
                         match pointer_data.phase {
-                            // Discrete scroll only results in moved events.
+                            // Descrete scroll only results in moved events.
                             _ if has_discrete_scroll => TouchPhase::Moved,
                             TouchPhase::Started | TouchPhase::Moved => TouchPhase::Moved,
                             _ => TouchPhase::Started,

src/platform_impl/linux/wayland/seat/pointer/relative_pointer.rs

@@ -60,34 +60,19 @@ impl Dispatch<ZwpRelativePointerV1, GlobalData, WinitState> for RelativePointerS
         _conn: &Connection,
         _qhandle: &QueueHandle<WinitState>,
     ) {
-        let (dx_unaccel, dy_unaccel) = match event {
+        if let zwp_relative_pointer_v1::Event::RelativeMotion {
-            zwp_relative_pointer_v1::Event::RelativeMotion {
+            dx_unaccel,
-                dx_unaccel,
+            dy_unaccel,
-                dy_unaccel,
+            ..
-                ..
+        } = event
-            } => (dx_unaccel, dy_unaccel),
+        {
-            _ => return,
+            state.events_sink.push_device_event(
-        };
+                DeviceEvent::MouseMotion {
-        state.events_sink.push_device_event(
+                    delta: (dx_unaccel, dy_unaccel),
-            DeviceEvent::Motion {
+                },
-                axis: 0,
+                super::DeviceId,
-                value: dx_unaccel,
+            );
-            },
+        }
-            super::DeviceId,
-        );
-        state.events_sink.push_device_event(
-            DeviceEvent::Motion {
-                axis: 1,
-                value: dy_unaccel,
-            },
-            super::DeviceId,
-        );
-        state.events_sink.push_device_event(
-            DeviceEvent::MouseMotion {
-                delta: (dx_unaccel, dy_unaccel),
-            },
-            super::DeviceId,
-        );
     }
 }
 

src/platform_impl/linux/wayland/seat/text_input/mod.rs

@@ -94,7 +94,7 @@ impl Dispatch<ZwpTextInputV3, TextInputData, WinitState> for TextInputState {
                 let window_id = wayland::make_wid(&surface);
 
                 // XXX this check is essential, because `leave` could have a
-                // reference to nil surface...
+                // refence to nil surface...
                 let mut window = match windows.get(&window_id) {
                     Some(window) => window.lock().unwrap(),
                     None => return,

src/platform_impl/linux/wayland/state.rs

@@ -60,7 +60,7 @@ pub struct WinitState {
     /// The pool where custom cursors are allocated.
     pub custom_cursor_pool: Arc<Mutex<SlotPool>>,
 
-    /// The XDG shell that is used for windows.
+    /// The XDG shell that is used for widnows.
     pub xdg_shell: XdgShell,
 
     /// The currently present windows.
@@ -72,7 +72,7 @@ pub struct WinitState {
     /// The events that were generated directly from the window.
     pub window_events_sink: Arc<Mutex<EventSink>>,
 
-    /// The update for the `windows` coming from the compositor.
+    /// The update for the `windows` comming from the compositor.
     pub window_compositor_updates: Vec<WindowCompositorUpdate>,
 
     /// Currently handled seats.
@@ -395,7 +395,7 @@ impl ProvidesRegistryState for WinitState {
     sctk::registry_handlers![OutputState, SeatState];
 }
 
-// The window update coming from the compositor.
+// The window update comming from the compositor.
 #[derive(Debug, Clone, Copy)]
 pub struct WindowCompositorUpdate {
     /// The id of the window this updates belongs to.

src/platform_impl/linux/wayland/window/mod.rs

@@ -3,6 +3,7 @@
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
 
+use sctk::reexports::calloop;
 use sctk::reexports::client::protocol::wl_display::WlDisplay;
 use sctk::reexports::client::protocol::wl_surface::WlSurface;
 use sctk::reexports::client::Proxy;
@@ -32,7 +33,7 @@ use super::event_loop::sink::EventSink;
 use super::output::MonitorHandle;
 use super::state::WinitState;
 use super::types::xdg_activation::XdgActivationTokenData;
-use super::{ActiveEventLoop, WaylandError, WindowId};
+use super::{EventLoopWindowTarget, WaylandError, WindowId};
 
 pub(crate) mod state;
 
@@ -80,7 +81,7 @@ pub struct Window {
 
 impl Window {
     pub(crate) fn new(
-        event_loop_window_target: &ActiveEventLoop,
+        event_loop_window_target: &EventLoopWindowTarget,
         attributes: WindowAttributes,
     ) -> Result<Self, RootOsError> {
         let queue_handle = event_loop_window_target.queue_handle.clone();