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layout: Use the new append_from method to get rid of a bunch of moves

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in display list construction.

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This commit is contained in:
Patrick Walton 2014-10-28 14:28:34 -07:00
parent 3aad350a64
commit 93bf69a6fe
4 changed files with 96 additions and 99 deletions
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11
components/layout/layout_task.rs
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@ -710,11 +710,10 @@ 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.
@ -754,7 +753,7 @@ 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