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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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11
components/script/script_task.rs
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@ -942,6 +942,8 @@ impl ScriptTask {
self.handle_webdriver_msg(pipeline_id, msg),
ConstellationControlMsg::TickAllAnimations(pipeline_id) =>
self.handle_tick_all_animations(pipeline_id),
ConstellationControlMsg::WebFontLoaded(pipeline_id) =>
self.handle_web_font_loaded(pipeline_id),
ConstellationControlMsg::StylesheetLoadComplete(id, url, responder) => {
responder.respond();
self.handle_resource_loaded(id, LoadType::Stylesheet(url));
@ -1478,6 +1480,15 @@ impl ScriptTask {
document.r().run_the_animation_frame_callbacks();
}
/// Handles a Web font being loaded. Does nothing if the page no longer exists.
fn handle_web_font_loaded(&self, pipeline_id: PipelineId) {
if let Some(page) = self.page.borrow().as_ref() {
if let Some(page) = page.find(pipeline_id) {
self.rebuild_and_force_reflow(&*page, ReflowReason::WebFontLoaded);
}
}
}
/// The entry point to document loading. Defines bindings, sets up the window and document
/// objects, parses HTML and CSS, and kicks off initial layout.
fn load(&self, metadata: Metadata, incomplete: InProgressLoad) -> Root<ServoHTMLParser> {