Web: don't block pen input (#3813)

src/changelog/unreleased.md

@@ -47,3 +47,4 @@ changelog entry.
 ### Fixed
 
 - On MacOS, fix building with `feature = "rwh_04"`.
+- On Web, pen events are now routed through to `WindowEvent::Cursor*`.

src/platform_impl/web/event_loop/runner.rs

@@ -245,21 +245,10 @@ impl Shared {
                     return;
                 }
 
-                let pointer_type = event.pointer_type();
-
-                if pointer_type != "mouse" {
-                    return;
-                }
-
                 // chorded button event
                 let device_id = RootDeviceId(DeviceId(event.pointer_id()));
 
                 if let Some(button) = backend::event::mouse_button(&event) {
-                    debug_assert_eq!(
-                        pointer_type, "mouse",
-                        "expect pointer type of a chorded button event to be a mouse"
-                    );
-
                     let state = if backend::event::mouse_buttons(&event).contains(button.into()) {
                         ElementState::Pressed
                     } else {
@@ -323,10 +312,6 @@ impl Shared {
                     return;
                 }
 
-                if event.pointer_type() != "mouse" {
-                    return;
-                }
-
                 let button = backend::event::mouse_button(&event).expect("no mouse button pressed");
                 runner.send_event(Event::DeviceEvent {
                     device_id: RootDeviceId(DeviceId(event.pointer_id())),
@@ -346,10 +331,6 @@ impl Shared {
                     return;
                 }
 
-                if event.pointer_type() != "mouse" {
-                    return;
-                }
-
                 let button = backend::event::mouse_button(&event).expect("no mouse button pressed");
                 runner.send_event(Event::DeviceEvent {
                     device_id: RootDeviceId(DeviceId(event.pointer_id())),

src/platform_impl/web/event_loop/window_target.rs

@@ -258,21 +258,6 @@ impl ActiveEventLoop {
         });
 
         canvas.on_cursor_move(
-            {
-                let runner = self.runner.clone();
-                let has_focus = has_focus.clone();
-                let modifiers = self.modifiers.clone();
-
-                move |active_modifiers| {
-                    if has_focus.get() && modifiers.get() != active_modifiers {
-                        modifiers.set(active_modifiers);
-                        runner.send_event(Event::WindowEvent {
-                            window_id: RootWindowId(id),
-                            event: WindowEvent::ModifiersChanged(active_modifiers.into()),
-                        })
-                    }
-                }
-            },
             {
                 let runner = self.runner.clone();
                 let has_focus = has_focus.clone();
@@ -372,20 +357,6 @@ impl ActiveEventLoop {
         );
 
         canvas.on_mouse_press(
-            {
-                let runner = self.runner.clone();
-                let modifiers = self.modifiers.clone();
-
-                move |active_modifiers| {
-                    if modifiers.get() != active_modifiers {
-                        modifiers.set(active_modifiers);
-                        runner.send_event(Event::WindowEvent {
-                            window_id: RootWindowId(id),
-                            event: WindowEvent::ModifiersChanged(active_modifiers.into()),
-                        })
-                    }
-                }
-            },
             {
                 let runner = self.runner.clone();
                 let modifiers = self.modifiers.clone();
@@ -450,21 +421,6 @@ impl ActiveEventLoop {
         );
 
         canvas.on_mouse_release(
-            {
-                let runner = self.runner.clone();
-                let has_focus = has_focus.clone();
-                let modifiers = self.modifiers.clone();
-
-                move |active_modifiers| {
-                    if has_focus.get() && modifiers.get() != active_modifiers {
-                        modifiers.set(active_modifiers);
-                        runner.send_event(Event::WindowEvent {
-                            window_id: RootWindowId(id),
-                            event: WindowEvent::ModifiersChanged(active_modifiers.into()),
-                        });
-                    }
-                }
-            },
             {
                 let runner = self.runner.clone();
                 let has_focus = has_focus.clone();

src/platform_impl/web/web_sys/canvas.rs

@@ -329,51 +329,29 @@ impl Canvas {
         self.pointer_handler.on_cursor_enter(&self.common, handler)
     }
 
-    pub fn on_mouse_release<MOD, M, T>(
+    pub fn on_mouse_release<M, T>(&mut self, mouse_handler: M, touch_handler: T)
-        &mut self,
+    where
-        modifier_handler: MOD,
-        mouse_handler: M,
-        touch_handler: T,
-    ) where
-        MOD: 'static + FnMut(ModifiersState),
         M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
         T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
     {
-        self.pointer_handler.on_mouse_release(
+        self.pointer_handler.on_mouse_release(&self.common, mouse_handler, touch_handler)
-            &self.common,
-            modifier_handler,
-            mouse_handler,
-            touch_handler,
-        )
     }
 
-    pub fn on_mouse_press<MOD, M, T>(
+    pub fn on_mouse_press<M, T>(&mut self, mouse_handler: M, touch_handler: T)
-        &mut self,
+    where
-        modifier_handler: MOD,
-        mouse_handler: M,
-        touch_handler: T,
-    ) where
-        MOD: 'static + FnMut(ModifiersState),
         M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
         T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
     {
         self.pointer_handler.on_mouse_press(
             &self.common,
-            modifier_handler,
             mouse_handler,
             touch_handler,
             Rc::clone(&self.prevent_default),
         )
     }
 
-    pub fn on_cursor_move<MOD, M, T, B>(
+    pub fn on_cursor_move<M, T, B>(&mut self, mouse_handler: M, touch_handler: T, button_handler: B)
-        &mut self,
+    where
-        modifier_handler: MOD,
-        mouse_handler: M,
-        touch_handler: T,
-        button_handler: B,
-    ) where
-        MOD: 'static + FnMut(ModifiersState),
         M: 'static + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = PhysicalPosition<f64>>),
         T: 'static
             + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = (PhysicalPosition<f64>, Force)>),
@@ -381,7 +359,6 @@ impl Canvas {
     {
         self.pointer_handler.on_cursor_move(
             &self.common,
-            modifier_handler,
             mouse_handler,
             touch_handler,
             button_handler,

src/platform_impl/web/web_sys/pointer.rs

@@ -44,7 +44,7 @@ impl PointerHandler {
                 // touch events are handled separately
                 // handling them here would produce duplicate mouse events, inconsistent with
                 // other platforms.
-                let pointer_id = (event.pointer_type() == "mouse").then(|| event.pointer_id());
+                let pointer_id = (event.pointer_type() != "touch").then(|| event.pointer_id());
 
                 handler(modifiers, pointer_id);
             }));
@@ -61,20 +61,18 @@ impl PointerHandler {
                 // touch events are handled separately
                 // handling them here would produce duplicate mouse events, inconsistent with
                 // other platforms.
-                let pointer_id = (event.pointer_type() == "mouse").then(|| event.pointer_id());
+                let pointer_id = (event.pointer_type() != "touch").then(|| event.pointer_id());
 
                 handler(modifiers, pointer_id);
             }));
     }
 
-    pub fn on_mouse_release<MOD, M, T>(
+    pub fn on_mouse_release<M, T>(
         &mut self,
         canvas_common: &Common,
-        mut modifier_handler: MOD,
         mut mouse_handler: M,
         mut touch_handler: T,
     ) where
-        MOD: 'static + FnMut(ModifiersState),
         M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
         T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
     {
@@ -90,26 +88,23 @@ impl PointerHandler {
                         event::mouse_position(&event).to_physical(super::scale_factor(&window)),
                         Force::Normalized(event.pressure() as f64),
                     ),
-                    "mouse" => mouse_handler(
+                    _ => mouse_handler(
                         modifiers,
                         event.pointer_id(),
                         event::mouse_position(&event).to_physical(super::scale_factor(&window)),
                         event::mouse_button(&event).expect("no mouse button released"),
                     ),
-                    _ => modifier_handler(modifiers),
                 }
             }));
     }
 
-    pub fn on_mouse_press<MOD, M, T>(
+    pub fn on_mouse_press<M, T>(
         &mut self,
         canvas_common: &Common,
-        mut modifier_handler: MOD,
         mut mouse_handler: M,
         mut touch_handler: T,
         prevent_default: Rc<Cell<bool>>,
     ) where
-        MOD: 'static + FnMut(ModifiersState),
         M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
         T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
     {
@@ -125,8 +120,9 @@ impl PointerHandler {
                 }
 
                 let modifiers = event::mouse_modifiers(&event);
+                let pointer_type = &event.pointer_type();
 
-                match event.pointer_type().as_str() {
+                match pointer_type.as_str() {
                     "touch" => {
                         touch_handler(
                             modifiers,
@@ -135,7 +131,7 @@ impl PointerHandler {
                             Force::Normalized(event.pressure() as f64),
                         );
                     },
-                    "mouse" => {
+                    _ => {
                         mouse_handler(
                             modifiers,
                             event.pointer_id(),
@@ -143,27 +139,27 @@ impl PointerHandler {
                             event::mouse_button(&event).expect("no mouse button pressed"),
                         );
 
-                        // Error is swallowed here since the error would occur every time the mouse
+                        if pointer_type == "mouse" {
-                        // is clicked when the cursor is grabbed, and there
+                            // Error is swallowed here since the error would occur every time the
-                        // is probably not a situation where this could
+                            // mouse is clicked when the cursor is
-                        // fail, that we care if it fails.
+                            // grabbed, and there is probably not a
-                        let _e = canvas.set_pointer_capture(event.pointer_id());
+                            // situation where this could fail, that we
+                            // care if it fails.
+                            let _e = canvas.set_pointer_capture(event.pointer_id());
+                        }
                     },
-                    _ => modifier_handler(modifiers),
                 }
             }));
     }
 
-    pub fn on_cursor_move<MOD, M, T, B>(
+    pub fn on_cursor_move<M, T, B>(
         &mut self,
         canvas_common: &Common,
-        mut modifier_handler: MOD,
         mut mouse_handler: M,
         mut touch_handler: T,
         mut button_handler: B,
         prevent_default: Rc<Cell<bool>>,
     ) where
-        MOD: 'static + FnMut(ModifiersState),
         M: 'static + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = PhysicalPosition<f64>>),
         T: 'static
             + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = (PhysicalPosition<f64>, Force)>),
@@ -175,23 +171,10 @@ impl PointerHandler {
             Some(canvas_common.add_event("pointermove", move |event: PointerEvent| {
                 let modifiers = event::mouse_modifiers(&event);
 
-                let pointer_type = event.pointer_type();
-
-                if let "touch" | "mouse" = pointer_type.as_str() {
-                } else {
-                    modifier_handler(modifiers);
-                    return;
-                }
-
                 let id = event.pointer_id();
 
                 // chorded button event
                 if let Some(button) = event::mouse_button(&event) {
-                    debug_assert_eq!(
-                        pointer_type, "mouse",
-                        "expect pointer type of a chorded button event to be a mouse"
-                    );
-
                     if prevent_default.get() {
                         // prevent text selection
                         event.prevent_default();
@@ -212,13 +195,7 @@ impl PointerHandler {
 
                 // pointer move event
                 let scale = super::scale_factor(&window);
-                match pointer_type.as_str() {
+                match event.pointer_type().as_str() {
-                    "mouse" => mouse_handler(
-                        modifiers,
-                        id,
-                        &mut event::pointer_move_event(event)
-                            .map(|event| event::mouse_position(&event).to_physical(scale)),
-                    ),
                     "touch" => touch_handler(
                         modifiers,
                         id,
@@ -229,7 +206,12 @@ impl PointerHandler {
                             )
                         }),
                     ),
-                    _ => unreachable!("didn't return early before"),
+                    _ => mouse_handler(
+                        modifiers,
+                        id,
+                        &mut event::pointer_move_event(event)
+                            .map(|event| event::mouse_position(&event).to_physical(scale)),
+                    ),
                 };
             }));
     }