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layout: Implement CSS transitions per CSS-TRANSITIONS § 2.

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Transition events are not yet supported, and the only animatable
properties are `top`, `right`, `bottom`, and `left`. However, all other
features of transitions are supported. There are no automated tests at
present because I'm not sure how best to test it, but three manual tests
are included.
This commit is contained in:
Patrick Walton 2015-03-23 13:32:49 -07:00
parent c1cc31b9d6
commit 66dd8c8a6c
31 changed files with 1603 additions and 224 deletions
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11
components/compositing/pipeline.rs
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@ -31,6 +31,7 @@ pub struct Pipeline {
pub id: PipelineId,
pub parent_info: Option<(PipelineId, SubpageId)>,
pub script_chan: ScriptControlChan,
/// A channel to layout, for performing reflows and shutdown.
pub layout_chan: LayoutControlChan,
pub paint_chan: PaintChan,
pub layout_shutdown_port: Receiver<()>,
@ -40,6 +41,9 @@ pub struct Pipeline {
/// The title of the most recently-loaded page.
pub title: Option<String>,
pub rect: Option<TypedRect<PagePx, f32>>,
/// Whether this pipeline is currently running animations. Pipelines that are running
/// animations cause composites to be continually scheduled.
pub running_animations: bool,
pub children: Vec<FrameId>,
}
@ -113,12 +117,14 @@ impl Pipeline {
ScriptControlChan(script_chan)
}
Some(script_chan) => {
let (containing_pipeline_id, subpage_id) = parent_info.expect("script_pipeline != None but subpage_id == None");
let (containing_pipeline_id, subpage_id) =
parent_info.expect("script_pipeline != None but subpage_id == None");
let new_layout_info = NewLayoutInfo {
containing_pipeline_id: containing_pipeline_id,
new_pipeline_id: id,
subpage_id: subpage_id,
layout_chan: ScriptTaskFactory::clone_layout_channel(None::<&mut STF>, &layout_pair),
layout_chan: ScriptTaskFactory::clone_layout_channel(None::<&mut STF>,
&layout_pair),
load_data: load_data.clone(),
};
@ -186,6 +192,7 @@ impl Pipeline {
title: None,
children: vec!(),
rect: rect,
running_animations: false,
}
}