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layout: Load Web fonts asynchronously.

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Improves page load times significantly.

Closes #7343.
This commit is contained in:
Patrick Walton 2015-09-10 14:16:50 -07:00
parent 9523283c14
commit 9bb6acd690
8 changed files with 216 additions and 35 deletions
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9
components/compositing/constellation.rs
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@ -1219,6 +1219,15 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
return false;
}
// Synchronously query the layout task for this pipeline
// to see if it is idle.
let (sender, receiver) = ipc::channel().unwrap();
let msg = LayoutControlMsg::GetWebFontLoadState(sender);
pipeline.layout_chan.0.send(msg).unwrap();
if receiver.recv().unwrap() {
return false;
}
// Check the visible rectangle for this pipeline. If the constellation
// hasn't received a rectangle for this pipeline yet, then assume
// that the output image isn't stable yet.