Accepts first mouse

CHANGELOG.md

@@ -25,6 +25,7 @@ And please only add new entries to the top of this list, right below the `# Unre
 - On Windows, fixed ALT+Space shortcut to open window menu.
 - On Wayland, fixed `Ime::Preedit` not being sent on IME reset.
 - Fixed unbound version specified for `raw-window-handle` leading to compilation failures.
+- On MacOS, made `accepts_first_mouse` configurable.
 
 # 0.27.2 (2022-8-12)
 

FEATURES.md

@@ -129,6 +129,7 @@ If your PR makes notable changes to Winit's features, please update this section
 * Hidden titlebar
 * Hidden titlebar buttons
 * Full-size content view
+* Accepts first mouse
 
 ### Unix
 * Window urgency

src/platform/macos.rs

@@ -111,6 +111,8 @@ pub trait WindowBuilderExtMacOS {
     fn with_fullsize_content_view(self, fullsize_content_view: bool) -> WindowBuilder;
     fn with_disallow_hidpi(self, disallow_hidpi: bool) -> WindowBuilder;
     fn with_has_shadow(self, has_shadow: bool) -> WindowBuilder;
+    /// Window accepts click-through mouse events.
+    fn with_accepts_first_mouse(self, accepts_first_mouse: bool) -> WindowBuilder;
 }
 
 impl WindowBuilderExtMacOS for WindowBuilder {
@@ -164,6 +166,12 @@ impl WindowBuilderExtMacOS for WindowBuilder {
         self.platform_specific.has_shadow = has_shadow;
         self
     }
+
+    #[inline]
+    fn with_accepts_first_mouse(mut self, accepts_first_mouse: bool) -> WindowBuilder {
+        self.platform_specific.accepts_first_mouse = accepts_first_mouse;
+        self
+    }
 }
 
 pub trait EventLoopBuilderExtMacOS {

src/platform_impl/macos/view.rs

@@ -907,7 +907,7 @@ declare_class!(
         #[sel(acceptsFirstMouse:)]
         fn accepts_first_mouse(&self, _event: &NSEvent) -> bool {
             trace_scope!("acceptsFirstMouse:");
-            true
+            self.window().accepts_first_mouse()
         }
     }
 );

src/platform_impl/macos/window.rs

@@ -79,6 +79,7 @@ pub struct PlatformSpecificWindowBuilderAttributes {
     pub fullsize_content_view: bool,
     pub disallow_hidpi: bool,
     pub has_shadow: bool,
+    pub accepts_first_mouse: bool,
 }
 
 impl Default for PlatformSpecificWindowBuilderAttributes {
@@ -93,6 +94,7 @@ impl Default for PlatformSpecificWindowBuilderAttributes {
             fullsize_content_view: false,
             disallow_hidpi: false,
             has_shadow: true,
+            accepts_first_mouse: true,
         }
     }
 }
@@ -149,6 +151,7 @@ pub struct SharedState {
     /// bar in exclusive fullscreen but want to restore the original options when
     /// transitioning back to borderless fullscreen.
     save_presentation_opts: Option<NSApplicationPresentationOptions>,
+    accepts_first_mouse: bool,
 }
 
 impl SharedState {
@@ -287,6 +290,7 @@ impl WinitWindow {
                 let state = SharedState {
                     resizable: attrs.resizable,
                     maximized: attrs.maximized,
+                    accepts_first_mouse: pl_attrs.accepts_first_mouse,
                     ..Default::default()
                 };
                 Ivar::write(
@@ -1106,6 +1110,12 @@ impl WinitWindow {
             util::set_style_mask_sync(self, current_style_mask & (!mask));
         }
     }
+
+    #[inline]
+    pub fn accepts_first_mouse(&self) -> bool {
+        let shared_state_lock = self.shared_state.lock().unwrap();
+        shared_state_lock.accepts_first_mouse
+    }
 }
 
 impl WindowExtMacOS for WinitWindow {