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Add simple fling implementation (#33219)

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* Add simple fling implementation

Add a simple fling implementation, which depends on a refresh tick from the
embedder.
Currently this refresh tick is only implemented for OpenHarmony
(using the vsync signal).
The fling implementation is very simple, without any fancy things like acceleration.
This can be improved in the future.

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* Multiply initial velocity with 2

This makes the experience much more snappy.

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* address review comments

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>

* Rename constants and add todo

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>

* fmt

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>

* Add a few periods to make comments consistent

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

---------

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Jonathan Schwender 2024-11-10 11:15:42 +01:00 • committed by GitHub
parent dcb9058fe3
commit 72971bd271
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6 changed files with 117 additions and 24 deletions
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10
components/compositing/compositor.rs
View file

@ -1896,6 +1896,16 @@ impl<Window: WindowMethods + ?Sized> IOCompositor<Window> {
.push(ScrollZoomEvent::PinchZoom(magnification));
}
/// On a Window refresh tick (e.g. vsync)
pub fn on_vsync(&mut self) {
if let Some(fling_action) = self.touch_handler.on_vsync() {
self.on_scroll_window_event(
ScrollLocation::Delta(fling_action.delta),
fling_action.cursor,
);
}
}
fn send_scroll_positions_to_layout_for_pipeline(&self, pipeline_id: &PipelineId) {
let details = match self.pipeline_details.get(pipeline_id) {
Some(details) => details,