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layout: Separate out overflow-for-scrolling from overflow-for-paint.

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Closes #9484.
This commit is contained in:
Patrick Walton 2016-02-03 10:51:41 -08:00
parent f605c6aa69
commit 7c5b2d6cb3
17 changed files with 131 additions and 56 deletions
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4
components/layout/display_list_builder.rs
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@ -1218,7 +1218,7 @@ impl FragmentDisplayListBuilding for Fragment {
CoordinateSystem::Parent)
}
StackingContextCreationMode::InnerScrollWrapper => {
Rect::new(Point2D::zero(), base_flow.overflow.size)
Rect::new(Point2D::zero(), base_flow.overflow.scroll.size)
}
};
let overflow = match mode {
@ -1228,7 +1228,7 @@ impl FragmentDisplayListBuilding for Fragment {
let border_box_offset =
border_box.translate(&-base_flow.stacking_relative_position).origin;
// Then, using that, compute our overflow region relative to our border box.
base_flow.overflow.translate(&-border_box_offset)
base_flow.overflow.paint.translate(&-border_box_offset)
}
StackingContextCreationMode::InnerScrollWrapper |
StackingContextCreationMode::OuterScrollWrapper => {