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layout: Tie transitions to the DOM node and finish them instantly when

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new styles are set.

Tying transitions to the DOM node avoids quadratic complexity when
updating them.

Finishing transitions instantly when styles are updated makes our
behavior more correct.
This commit is contained in:
Patrick Walton 2015-08-01 10:13:21 -07:00
parent 92cbb93684
commit 7349b6ac28
5 changed files with 90 additions and 49 deletions
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23
components/layout/layout_task.rs
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@ -138,7 +138,7 @@ pub struct LayoutTaskData {
pub resolved_style_response: Option<String>,
/// The list of currently-running animations.
pub running_animations: Vec<Animation>,
pub running_animations: Arc<HashMap<OpaqueNode,Vec<Animation>>>,
/// Receives newly-discovered animations.
pub new_animations_receiver: Receiver<Animation>,
@ -381,7 +381,7 @@ impl LayoutTask {
content_boxes_response: Vec::new(),
client_rect_response: Rect::zero(),
resolved_style_response: None,
running_animations: Vec::new(),
running_animations: Arc::new(HashMap::new()),
visible_rects: Arc::new(HashMap::with_hash_state(Default::default())),
new_animations_receiver: new_animations_receiver,
new_animations_sender: new_animations_sender,
@ -423,6 +423,7 @@ impl LayoutTask {
generation: rw_data.generation,
new_animations_sender: rw_data.new_animations_sender.clone(),
goal: goal,
running_animations: rw_data.running_animations.clone(),
}
}
@ -1275,23 +1276,27 @@ impl LayoutTask {
animation::tick_all_animations(self, &mut rw_data)
}
pub fn tick_animation<'a>(&'a self, animation: &Animation, rw_data: &mut LayoutTaskData) {
pub fn tick_animations<'a>(&'a self, rw_data: &mut LayoutTaskData) {
let reflow_info = Reflow {
goal: ReflowGoal::ForDisplay,
page_clip_rect: MAX_RECT,
};
// Perform an abbreviated style recalc that operates without access to the DOM.
let mut layout_context = self.build_shared_layout_context(&*rw_data,
false,
None,
&self.url,
reflow_info.goal);
let mut root_flow = (*rw_data.root_flow.as_ref().unwrap()).clone();
profile(time::ProfilerCategory::LayoutStyleRecalc,
self.profiler_metadata(),
self.time_profiler_chan.clone(),
|| animation::recalc_style_for_animation(root_flow.deref_mut(), &animation));
{
// Perform an abbreviated style recalc that operates without access to the DOM.
let mut root_flow = (*rw_data.root_flow.as_ref().unwrap()).clone();
let animations = &*rw_data.running_animations;
profile(time::ProfilerCategory::LayoutStyleRecalc,
self.profiler_metadata(),
self.time_profiler_chan.clone(),
|| animation::recalc_style_for_animations(root_flow.deref_mut(), animations));
}
self.perform_post_style_recalc_layout_passes(&reflow_info,
&mut *rw_data,