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Touch handler: Fix race condition and rate-limit move events (#35537)

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* TouchSequenceInfo is added to store information about a touch sequence.
  For details about TouchSequenceInfo, see the code comments.
The handling_touch_move attribute is added to the TouchHandler, indicating that the script is processing the touch move event.
  When handling_touch_move is set to true, the touch move event does not need to be sent to the script thread.

Signed-off-by: kongbai1996 <1782765876@qq.com>

* move touch state, active_touch_point and handling_touch_move to TouchSequenceInfo form TouchHandler.
remove TouchSequenceInfo end_sequence property, add Finished state mark sequence end.
if preventDefault on touchup, do not prevent Fling.

Signed-off-by: kongbai1996 <1782765876@qq.com>

* Refactor Touchhandler

- Add a newtype wrapper for the TouchSequenceId
- Move more state back into the TouchSequenceState
- Rename TouchAction to TouchMoveAction,
  since it only covers immediate actions now.
  Everything else is handled via state, since
  it needs to wait on the handler.

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

* Fix test-tidy

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

* Fix clippy missing-default lint

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

* Fix remaining clippy lints

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

* Remove accidental committed test file

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

* Remove wrong todo comment

(move events that are sent to script are just raw  touchpoints,
 no merging needed)

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

* Fix preventdefault after long touch_down handler

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

---------

Signed-off-by: kongbai1996 <1782765876@qq.com>
Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>
Co-authored-by: Jonathan Schwender <schwenderjonathan@gmail.com>
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Bi Fuguo 2025-02-25 15:13:16 +08:00 • committed by GitHub
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commit f3a8bf8ca2
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9 changed files with 746 additions and 278 deletions
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4
components/shared/compositing/lib.rs
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@ -17,7 +17,7 @@ use euclid::Rect;
use ipc_channel::ipc::IpcSender;
use log::warn;
use pixels::Image;
use script_traits::{AnimationState, EventResult, ScriptThreadMessage};
use script_traits::{AnimationState, ScriptThreadMessage, TouchEventResult};
use style_traits::CSSPixel;
use webrender_api::DocumentId;
use webrender_traits::{CrossProcessCompositorApi, CrossProcessCompositorMessage};
@ -65,7 +65,7 @@ pub enum CompositorMsg {
/// Remove a webview.
RemoveWebView(TopLevelBrowsingContextId),
/// Script has handled a touch event, and either prevented or allowed default actions.
TouchEventProcessed(EventResult),
TouchEventProcessed(TouchEventResult),
/// Composite to a PNG file and return the Image over a passed channel.
CreatePng(Option<Rect<f32, CSSPixel>>, IpcSender<Option<Image>>),
/// A reply to the compositor asking if the output image is stable.