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Fix animation frame callback cancellation (#35849)

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Signed-off-by: Xiaocheng Hu <xiaochengh.work@gmail.com>
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Xiaocheng Hu 2025-03-10 19:04:46 +08:00 • committed by GitHub
parent 7fc5dc5c69
commit b1e1e01ee9
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2 changed files with 8 additions and 23 deletions
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28
components/script/dom/document.rs
View file

@ -345,7 +345,7 @@ pub(crate) struct Document {
animation_frame_ident: Cell<u32>, animation_frame_ident: Cell<u32>,
/// <https://html.spec.whatwg.org/multipage/#list-of-animation-frame-callbacks> /// <https://html.spec.whatwg.org/multipage/#list-of-animation-frame-callbacks>
/// List of animation frame callbacks /// List of animation frame callbacks
animation_frame_list: DomRefCell<Vec<(u32, Option<AnimationFrameCallback>)>>, animation_frame_list: DomRefCell<VecDeque<(u32, Option<AnimationFrameCallback>)>>,
/// Whether we're in the process of running animation callbacks. /// Whether we're in the process of running animation callbacks.
/// ///
/// Tracking this is not necessary for correctness. Instead, it is an optimization to avoid /// Tracking this is not necessary for correctness. Instead, it is an optimization to avoid
@ -2337,7 +2337,7 @@ impl Document {
self.animation_frame_ident.set(ident); self.animation_frame_ident.set(ident);
self.animation_frame_list self.animation_frame_list
.borrow_mut() .borrow_mut()
.push((ident, Some(callback))); .push_back((ident, Some(callback)));
// If we are running 'fake' animation frames, we unconditionally // If we are running 'fake' animation frames, we unconditionally
// set up a one-shot timer for script to execute the rAF callbacks. // set up a one-shot timer for script to execute the rAF callbacks.
@ -2380,11 +2380,6 @@ impl Document {
/// <https://html.spec.whatwg.org/multipage/#run-the-animation-frame-callbacks> /// <https://html.spec.whatwg.org/multipage/#run-the-animation-frame-callbacks>
pub(crate) fn run_the_animation_frame_callbacks(&self, can_gc: CanGc) { pub(crate) fn run_the_animation_frame_callbacks(&self, can_gc: CanGc) {
let _realm = enter_realm(self); let _realm = enter_realm(self);
rooted_vec!(let mut animation_frame_list);
mem::swap(
&mut *animation_frame_list,
&mut *self.animation_frame_list.borrow_mut(),
);
self.pending_animation_ticks self.pending_animation_ticks
.borrow_mut() .borrow_mut()
@ -2394,8 +2389,10 @@ impl Document {
let was_faking_animation_frames = self.is_faking_animation_frames(); let was_faking_animation_frames = self.is_faking_animation_frames();
let timing = self.global().performance().Now(); let timing = self.global().performance().Now();
for (_, callback) in animation_frame_list.drain(..) { let num_callbacks = self.animation_frame_list.borrow().len();
if let Some(callback) = callback { for _ in 0..num_callbacks {
let (_, maybe_callback) = self.animation_frame_list.borrow_mut().pop_front().unwrap();
if let Some(callback) = maybe_callback {
callback.call(self, *timing, can_gc); callback.call(self, *timing, can_gc);
} }
} }
@ -2440,16 +2437,7 @@ impl Document {
let just_crossed_spurious_animation_threshold = let just_crossed_spurious_animation_threshold =
!was_faking_animation_frames && self.is_faking_animation_frames(); !was_faking_animation_frames && self.is_faking_animation_frames();
if is_empty || just_crossed_spurious_animation_threshold { if is_empty || just_crossed_spurious_animation_threshold {
if is_empty { if !is_empty {
// If the current animation frame list in the DOM instance is empty,
// we can reuse the original `Vec<T>` that we put on the stack to
// avoid allocating a new one next time an animation callback
// is queued.
mem::swap(
&mut *self.animation_frame_list.borrow_mut(),
&mut *animation_frame_list,
);
} else if just_crossed_spurious_animation_threshold {
// We just realized that we need to stop requesting compositor's animation ticks // We just realized that we need to stop requesting compositor's animation ticks
// due to spurious animation frames, but we still have rAF callbacks queued. Since // due to spurious animation frames, but we still have rAF callbacks queued. Since
// `is_faking_animation_frames` would not have been true at the point where these // `is_faking_animation_frames` would not have been true at the point where these
@ -3686,7 +3674,7 @@ impl Document {
asap_scripts_set: Default::default(), asap_scripts_set: Default::default(),
scripting_enabled: has_browsing_context, scripting_enabled: has_browsing_context,
animation_frame_ident: Cell::new(0), animation_frame_ident: Cell::new(0),
animation_frame_list: DomRefCell::new(vec![]), animation_frame_list: DomRefCell::new(VecDeque::new()),
running_animation_callbacks: Cell::new(false), running_animation_callbacks: Cell::new(false),
loader: DomRefCell::new(doc_loader), loader: DomRefCell::new(doc_loader),
current_parser: Default::default(), current_parser: Default::default(),

3
tests/wpt/meta/html/webappapis/animation-frames/cancel-pending.html.ini vendored
View file

@ -1,3 +0,0 @@
[cancel-pending.html]
[cancelAnimationFrame cancels a pending animation frame callback]
expected: FAIL