script/compositor: Send mouseleave events when cursor moves between <iframe>s (#38539)

Properly send `mouseleave` events when the cursor moves between
`<iframe>`s. This allows a better handling of cursor changes and status
text updates. Specifically, we do not need to continuously update the
cursor and the value can be cached in the `Document`. In addition,
status updates can now be sent properly when moving focus between
`<iframe>`s.

Note that style updates for `:hover` values are still broken, but less
so than before. Now the hover state on the `Node` is updated, but for
some
reason the restyle isn't taking place properly. This maintains the
status quo as far as behavior goes when hover moves between `<iframe>`s.

This change also adds a helper data structure to `Document` which will
eventually be responsible for event handling.

Testing: Cursor and status change are currently very hard to test as
the API test harness makes this difficult at the moment.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2025-08-11 14:31:54 +02:00 committed by GitHub
parent 82ca2b92cd
commit b75c3feb97
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
11 changed files with 307 additions and 210 deletions

View file

@ -329,23 +329,23 @@ impl WebViewRenderer {
}
}
pub(crate) fn dispatch_point_input_event(&self, mut event: InputEvent) -> bool {
// Events that do not need to do hit testing are sent directly to the
// constellation to filter down.
let Some(point) = event.point() else {
return false;
};
// If we can't find a pipeline to send this event to, we cannot continue.
let Some(result) = self
.global
.borrow()
.hit_test_at_point(point)
.into_iter()
.nth(0)
else {
warn!("Empty hit test result for input event, ignoring.");
return false;
pub(crate) fn dispatch_input_event_with_hit_testing(&self, mut event: InputEvent) -> bool {
let event_point = event.point();
let hit_test_result = match event_point {
Some(point) => {
let hit_test_result = self
.global
.borrow()
.hit_test_at_point(point)
.into_iter()
.nth(0);
if hit_test_result.is_none() {
warn!("Empty hit test result for input event, ignoring.");
return false;
}
hit_test_result
},
None => None,
};
match event {
@ -353,7 +353,7 @@ impl WebViewRenderer {
touch_event.init_sequence_id(self.touch_handler.current_sequence_id);
},
InputEvent::MouseMove(_) => {
self.global.borrow_mut().last_mouse_move_position = Some(point);
self.global.borrow_mut().last_mouse_move_position = event_point;
},
InputEvent::MouseLeave(_) => {
self.global.borrow_mut().last_mouse_move_position = None;
@ -363,7 +363,7 @@ impl WebViewRenderer {
}
if let Err(error) = self.global.borrow().constellation_sender.send(
EmbedderToConstellationMessage::ForwardInputEvent(self.id, event, Some(result)),
EmbedderToConstellationMessage::ForwardInputEvent(self.id, event, hit_test_result),
) {
warn!("Sending event to constellation failed ({error:?}).");
false
@ -438,11 +438,11 @@ impl WebViewRenderer {
}
}
self.dispatch_point_input_event(event);
self.dispatch_input_event_with_hit_testing(event);
}
fn send_touch_event(&mut self, event: TouchEvent) -> bool {
self.dispatch_point_input_event(InputEvent::Touch(event))
self.dispatch_input_event_with_hit_testing(InputEvent::Touch(event))
}
pub(crate) fn on_touch_event(&mut self, event: TouchEvent) {
@ -706,13 +706,15 @@ impl WebViewRenderer {
/// <http://w3c.github.io/touch-events/#mouse-events>
fn simulate_mouse_click(&mut self, point: DevicePoint) {
let button = MouseButton::Left;
self.dispatch_point_input_event(InputEvent::MouseMove(MouseMoveEvent::new(point)));
self.dispatch_point_input_event(InputEvent::MouseButton(MouseButtonEvent::new(
self.dispatch_input_event_with_hit_testing(InputEvent::MouseMove(MouseMoveEvent::new(
point,
)));
self.dispatch_input_event_with_hit_testing(InputEvent::MouseButton(MouseButtonEvent::new(
MouseButtonAction::Down,
button,
point,
)));
self.dispatch_point_input_event(InputEvent::MouseButton(MouseButtonEvent::new(
self.dispatch_input_event_with_hit_testing(InputEvent::MouseButton(MouseButtonEvent::new(
MouseButtonAction::Up,
button,
point,