Update to to winit 0.28 (#2654)

* Update to winit 0.28

Mac trackpads pinch gestures will now generate `egui::Event::Zoom`

* Update accesskit_winit

* Try to get Android CI green

* Fix wayland compilation

* Add comment about android-activity

* Update changelogs

* Fix call to register_xlib_error_hook

crates/eframe/CHANGELOG.md

@@ -10,6 +10,7 @@ NOTE: [`egui-winit`](../egui-winit/CHANGELOG.md), [`egui_glium`](../egui_glium/C
 
 #### Desktop/Native:
 * `eframe::run_native` now returns a `Result` ([#2433](https://github.com/emilk/egui/pull/2433)).
+* Update to `winit` 0.28, adding support for mac trackpad zoom ([#2654](https://github.com/emilk/egui/pull/2654)).
 
 #### Web:
 * Prevent ctrl-P/cmd-P from opening the print dialog ([#2598](https://github.com/emilk/egui/pull/2598)).

crates/eframe/Cargo.toml

@@ -92,7 +92,7 @@ egui-winit = { version = "0.20.0", path = "../egui-winit", default-features = fa
   "links",
 ] }
 raw-window-handle = { version = "0.5.0" }
-winit = "0.27.2"
+winit = "0.28"
 
 # optional native:
 dark-light = { version = "1.0", optional = true }

crates/eframe/src/native/epi_integration.rs

@@ -78,7 +78,6 @@ pub fn build_window<E>(
 
     let mut window_builder = winit::window::WindowBuilder::new()
         .with_title(title)
-        .with_always_on_top(*always_on_top)
         .with_decorations(*decorated)
         .with_fullscreen(fullscreen.then(|| winit::window::Fullscreen::Borderless(None)))
         .with_maximized(*maximized)
@@ -143,7 +142,16 @@ pub fn build_window<E>(
         }
     }
 
-    window_builder.build(event_loop)
+    let window = window_builder.build(event_loop)?;
+
+    use winit::window::WindowLevel;
+    window.set_window_level(if *always_on_top {
+        WindowLevel::AlwaysOnTop
+    } else {
+        WindowLevel::Normal
+    });
+
+    Ok(window)
 }
 
 fn largest_monitor_point_size<E>(event_loop: &EventLoopWindowTarget<E>) -> egui::Vec2 {
@@ -235,7 +243,12 @@ pub fn handle_app_output(
     }
 
     if let Some(always_on_top) = always_on_top {
-        window.set_always_on_top(always_on_top);
+        use winit::window::WindowLevel;
+        window.set_window_level(if always_on_top {
+            WindowLevel::AlwaysOnTop
+        } else {
+            WindowLevel::Normal
+        });
     }
 }
 

crates/eframe/src/native/run.rs

@@ -363,7 +363,7 @@ mod glow_integration {
             // try egl and fallback to x11 glx
             #[cfg(target_os = "linux")]
             let preference = glutin::display::DisplayApiPreference::EglThenGlx(Box::new(
-                winit::platform::unix::register_xlib_error_hook,
+                winit::platform::x11::register_xlib_error_hook,
             ));
             #[cfg(target_os = "macos")]
             let preference = glutin::display::DisplayApiPreference::Cgl;

crates/egui-wgpu/Cargo.toml

@@ -49,7 +49,7 @@ wgpu = "0.15.0"
 ## Enable this when generating docs.
 document-features = { version = "0.2", optional = true }
 
-winit = { version = "0.27.2", optional = true }
+winit = { version = "0.28", optional = true }
 
 # Native:
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]

crates/egui-winit/CHANGELOG.md

@@ -3,6 +3,7 @@ All notable changes to the `egui-winit` integration will be noted in this file.
 
 
 ## Unreleased
+* Update to `winit` 0.28, adding support for mac trackpad zoom ([#2654](https://github.com/emilk/egui/pull/2654)).
 * Remove the `screen_reader` feature. Use the `accesskit` feature flag instead ([#2669](https://github.com/emilk/egui/pull/2669)).
 
 

crates/egui-winit/Cargo.toml

@@ -50,16 +50,16 @@ instant = { version = "0.1", features = [
   "wasm-bindgen",
 ] } # We use instant so we can (maybe) compile for web
 tracing = { version = "0.1", default-features = false, features = ["std"] }
-winit = { version = "0.27.2", default-features = false }
+winit = { version = "0.28", default-features = false }
 
 #! ### Optional dependencies
 
+# feature accesskit
+accesskit_winit = { version = "0.9.0", optional = true }
+
 ## Enable this when generating docs.
 document-features = { version = "0.2", optional = true }
 
-# feature accesskit
-accesskit_winit = { version = "0.8.1", optional = true }
-
 puffin = { version = "0.14", optional = true }
 serde = { version = "1.0", optional = true, features = ["derive"] }
 
@@ -70,3 +70,7 @@ smithay-clipboard = { version = "0.6.3", optional = true }
 
 [target.'cfg(not(target_os = "android"))'.dependencies]
 arboard = { version = "3.2", optional = true, default-features = false }
+
+[target.'cfg(target_os = "android")'.dependencies]
+# TODO(emilk): this is probably not the right place for specifying native-activity, but we need to do it somewhere for the CI
+android-activity = { version = "0.4", features = ["native-activity"] }

crates/egui-winit/src/lib.rs

@@ -25,16 +25,6 @@ pub use window_settings::WindowSettings;
 
 use winit::event_loop::EventLoopWindowTarget;
 
-#[cfg(feature = "wayland")]
-#[cfg(any(
-    target_os = "linux",
-    target_os = "dragonfly",
-    target_os = "freebsd",
-    target_os = "netbsd",
-    target_os = "openbsd"
-))]
-use winit::platform::unix::EventLoopWindowTargetExtUnix;
-
 pub fn native_pixels_per_point(window: &winit::window::Window) -> f32 {
     window.scale_factor() as f32
 }
@@ -377,8 +367,9 @@ impl State {
                     consumed: false,
                 }
             }
-            WindowEvent::AxisMotion { .. }
-            | WindowEvent::CloseRequested
+
+            // Things that may require repaint:
+            WindowEvent::CloseRequested
             | WindowEvent::CursorEntered { .. }
             | WindowEvent::Destroyed
             | WindowEvent::Occluded(_)
@@ -388,10 +379,26 @@ impl State {
                 repaint: true,
                 consumed: false,
             },
-            WindowEvent::Moved(_) => EventResponse {
-                repaint: false, // moving a window doesn't warrant a repaint
+
+            // Things we completely ignore:
+            WindowEvent::AxisMotion { .. }
+            | WindowEvent::Moved(_)
+            | WindowEvent::SmartMagnify { .. }
+            | WindowEvent::TouchpadRotate { .. } => EventResponse {
+                repaint: false,
                 consumed: false,
             },
+
+            WindowEvent::TouchpadMagnify { delta, .. } => {
+                // Positive delta values indicate magnification (zooming in).
+                // Negative delta values indicate shrinking (zooming out).
+                let zoom_factor = (*delta as f32).exp();
+                self.egui_input.events.push(egui::Event::Zoom(zoom_factor));
+                EventResponse {
+                    repaint: true,
+                    consumed: egui_ctx.wants_pointer_input(),
+                }
+            }
         }
     }
 
@@ -871,6 +878,7 @@ fn wayland_display<T>(_event_loop: &EventLoopWindowTarget<T>) -> Option<*mut c_v
         target_os = "openbsd"
     ))]
     {
+        use winit::platform::wayland::EventLoopWindowTargetExtWayland as _;
         return _event_loop.wayland_display();
     }
 

crates/egui_glow/examples/pure_glow.rs

@@ -33,7 +33,7 @@ impl GlutinWindowContext {
         // try egl and fallback to x11 glx
         #[cfg(target_os = "linux")]
         let preference = glutin::display::DisplayApiPreference::EglThenGlx(Box::new(
-            winit::platform::unix::register_xlib_error_hook,
+            winit::platform::x11::register_xlib_error_hook,
         ));
         #[cfg(target_os = "macos")]
         let preference = glutin::display::DisplayApiPreference::Cgl;