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Stop polling in event loop on RedrawRequest::NextFrame

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This commit is contained in:
Héctor Ramón Jiménez 2023-12-20 08:56:57 +01:00
parent e772e5a9e9
commit 50a7852cb8
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GPG key ID: 7CC46565708259A7
3 changed files with 8 additions and 13 deletions
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6
examples/loading_spinners/src/circular.rs
View file

@ -275,8 +275,6 @@ where
shell: &mut Shell<'_, Message>, shell: &mut Shell<'_, Message>,
_viewport: &Rectangle, _viewport: &Rectangle,
) -> event::Status { ) -> event::Status {
const FRAME_RATE: u64 = 60;
let state = tree.state.downcast_mut::<State>(); let state = tree.state.downcast_mut::<State>();
if let Event::Window(_, window::Event::RedrawRequested(now)) = event { if let Event::Window(_, window::Event::RedrawRequested(now)) = event {
@ -287,9 +285,7 @@ where
); );
state.cache.clear(); state.cache.clear();
shell.request_redraw(RedrawRequest::At( shell.request_redraw(RedrawRequest::NextFrame);
now + Duration::from_millis(1000 / FRAME_RATE),
));
} }
event::Status::Ignored event::Status::Ignored

6
examples/loading_spinners/src/linear.rs
View file

@ -196,16 +196,12 @@ where
shell: &mut Shell<'_, Message>, shell: &mut Shell<'_, Message>,
_viewport: &Rectangle, _viewport: &Rectangle,
) -> event::Status { ) -> event::Status {
const FRAME_RATE: u64 = 60;
let state = tree.state.downcast_mut::<State>(); let state = tree.state.downcast_mut::<State>();
if let Event::Window(_, window::Event::RedrawRequested(now)) = event { if let Event::Window(_, window::Event::RedrawRequested(now)) = event {
*state = state.timed_transition(self.cycle_duration, now); *state = state.timed_transition(self.cycle_duration, now);
shell.request_redraw(RedrawRequest::At( shell.request_redraw(RedrawRequest::NextFrame);
now + Duration::from_millis(1000 / FRAME_RATE),
));
} }
event::Status::Ignored event::Status::Ignored

9
winit/src/application.rs
View file

@ -314,7 +314,6 @@ async fn run_instance<A, E, C>(
match event { match event {
event::Event::NewEvents( event::Event::NewEvents(
event::StartCause::Init event::StartCause::Init
| event::StartCause::Poll
| event::StartCause::ResumeTimeReached { .. }, | event::StartCause::ResumeTimeReached { .. },
) if !redraw_pending => { ) if !redraw_pending => {
window.request_redraw(); window.request_redraw();
@ -387,7 +386,11 @@ async fn run_instance<A, E, C>(
user_interface::State::Updated { user_interface::State::Updated {
redraw_request: Some(redraw_request), redraw_request: Some(redraw_request),
} => match redraw_request { } => match redraw_request {
window::RedrawRequest::NextFrame => ControlFlow::Poll, window::RedrawRequest::NextFrame => {
window.request_redraw();
ControlFlow::Wait
}
window::RedrawRequest::At(at) => { window::RedrawRequest::At(at) => {
ControlFlow::WaitUntil(at) ControlFlow::WaitUntil(at)
} }
@ -469,7 +472,7 @@ async fn run_instance<A, E, C>(
_ => {} _ => {}
} }
if !redraw_pending && events.is_empty() && messages.is_empty() { if events.is_empty() && messages.is_empty() {
continue; continue;
} }