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layout: Reference count ComputedValues structures like Gecko does.

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This has no difference in CSS selector matching performance and results
in a 31% speedup in constraint solving on the rainbow page.
This commit is contained in:
Patrick Walton 2013-12-11 19:58:27 -08:00
parent 511d2b11d4
commit 4c8383c38b
8 changed files with 66 additions and 53 deletions
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7
src/components/main/layout/inline.rs
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@ -589,7 +589,7 @@ impl InlineFlow {
// not from the style of the first box child.
let linebox_align = if line.range.begin() < boxes.len() {
let first_box = &boxes[line.range.begin()];
first_box.nearest_ancestor_element().style().Text.text_align
first_box.style().Text.text_align
} else {
// Nothing to lay out, so assume left alignment.
text_align::left
@ -804,8 +804,9 @@ impl Flow for InlineFlow {
// content area. But for now we assume it's zero.
let parent_text_bottom = Au::new(0);
let parent = cur_box.node.parent_node();
let font_size = parent.unwrap().style().Font.font_size;
let parent = cur_box.node.parent_node().unwrap();
let parent_style = parent.style();
let font_size = parent_style.get().Font.font_size;
parent_text_top = font_size;
// Calculate a relative offset from the baseline.