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auto merge of #3839 : pcwalton/servo/fewer-moves-in-dls, r=glennw

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r? @glennw
This commit is contained in:
bors-servo 2014-10-28 17:57:43 -06:00
commit 651ef60b1c
4 changed files with 96 additions and 99 deletions
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11
components/layout/layout_task.rs
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@ -743,11 +743,10 @@ impl LayoutTask {
debug!("Done building display list. Display List = {}",
flow::base(layout_root.deref()).display_list);
let root_display_list =
mem::replace(&mut flow::mut_base(layout_root.deref_mut()).display_list,
DisplayList::new());
root_display_list.debug();
let display_list = Arc::new(root_display_list.flatten(ContentStackingLevel));
flow::mut_base(&mut *layout_root).display_list.flatten(ContentStackingLevel);
let display_list =
Arc::new(mem::replace(&mut flow::mut_base(&mut *layout_root).display_list,
DisplayList::new()));
// FIXME(pcwalton): This is really ugly and can't handle overflow: scroll. Refactor
// it with extreme prejudice.
@ -787,7 +786,7 @@ impl LayoutTask {
scroll_policy: Scrollable,
};
rw_data.display_list = Some(display_list.clone());
rw_data.display_list = Some(display_list);
// TODO(pcwalton): Eventually, when we have incremental reflow, this will have to
// be smarter in order to handle retained layer contents properly from reflow to