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track and update cursor while scrolling

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This commit is contained in:
Manpreet Singh Matharu 2019-07-12 15:52:26 -04:00
parent 5fdc7c0d2c
commit a44f795845
1 changed files with 20 additions and 0 deletions
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20
components/compositing/compositor.rs
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@ -198,6 +198,9 @@ pub struct IOCompositor<Window: WindowMethods + ?Sized> {
/// Current mouse cursor.
cursor: Cursor,
/// Current cursor position.
cursor_pos: DevicePoint,
output_file: Option<String>,
is_running_problem_test: bool,
@ -320,6 +323,7 @@ impl<Window: WindowMethods + ?Sized> IOCompositor<Window> {
webxr_main_thread: state.webxr_main_thread,
pending_paint_metrics: HashMap::new(),
cursor: Cursor::None,
cursor_pos: DevicePoint::new(0.0, 0.0),
output_file,
is_running_problem_test,
exit_after_load,
@ -361,6 +365,21 @@ impl<Window: WindowMethods + ?Sized> IOCompositor<Window> {
self.webrender.deinit();
}
pub fn update_cursor(&mut self) {
let results = self.hit_test_at_point(self.cursor_pos);
if let Some(item) = results.items.first() {
if let Some(cursor) = Cursor::from_u8(item.tag.1 as _) {
if cursor != self.cursor {
self.cursor = cursor;
let msg = ConstellationMsg::SetCursor(cursor);
if let Err(e) = self.constellation_chan.send(msg) {
warn!("Sending event to constellation failed ({:?}).", e);
}
}
}
}
}
pub fn maybe_start_shutting_down(&mut self) {
if self.shutdown_state == ShutdownState::NotShuttingDown {
debug!("Shutting down the constellation for WindowEvent::Quit");
@ -481,6 +500,7 @@ impl<Window: WindowMethods + ?Sized> IOCompositor<Window> {
(Msg::NewScrollFrameReady(recomposite_needed), ShutdownState::NotShuttingDown) => {
self.waiting_for_results_of_scroll = false;
self.update_cursor();
if recomposite_needed {
self.composition_request = CompositionRequest::CompositeNow(
CompositingReason::NewWebRenderScrollFrame,