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layout: Implement outline-offset per CSS-UI-3 § 5.5.

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This commit is contained in:
Patrick Walton 2015-01-01 13:27:50 -05:00
parent a88e668091
commit af7cf26e76
6 changed files with 62 additions and 4 deletions
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9
components/layout/display_list_builder.rs
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@ -569,10 +569,11 @@ impl FragmentDisplayListBuilding for Fragment {
// Outlines are not accounted for in the dimensions of the border box, so adjust the
// absolute bounds.
let mut bounds = *bounds;
bounds.origin.x = bounds.origin.x - width;
bounds.origin.y = bounds.origin.y - width;
bounds.size.width = bounds.size.width + width + width;
bounds.size.height = bounds.size.height + width + width;
let offset = width + style.get_outline().outline_offset;
bounds.origin.x = bounds.origin.x - offset;
bounds.origin.y = bounds.origin.y - offset;
bounds.size.width = bounds.size.width + offset + offset;
bounds.size.height = bounds.size.height + offset + offset;
// Append the outline to the display list.
let color = style.resolve_color(style.get_outline().outline_color).to_gfx_color();