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compositing: Implement display ports and avoid creating display lists

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This improves Servo's performance on large pages.
This commit is contained in:
Patrick Walton 2015-05-13 17:13:59 -07:00
parent acb9824229
commit 6a197719b3
26 changed files with 340 additions and 66 deletions
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14
components/layout/inline.rs
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@ -1464,7 +1464,7 @@ impl Flow for InlineFlow {
self.base.restyle_damage.remove(REFLOW_OUT_OF_FLOW | REFLOW);
}
fn compute_absolute_position(&mut self) {
fn compute_absolute_position(&mut self, _: &LayoutContext) {
// First, gather up the positions of all the containing blocks (if any).
let mut containing_block_positions = Vec::new();
let container_size = Size2D(self.base.block_container_inline_size, Au(0));
@ -1504,14 +1504,18 @@ impl Flow for InlineFlow {
let block_flow = info.flow_ref.as_block();
block_flow.base.absolute_position_info = self.base.absolute_position_info;
block_flow.base.stacking_relative_position =
stacking_relative_border_box.origin
stacking_relative_border_box.origin;
block_flow.base.stacking_relative_position_of_display_port =
self.base.stacking_relative_position_of_display_port;
}
SpecificFragmentInfo::InlineAbsoluteHypothetical(ref mut info) => {
flow::mut_base(&mut *info.flow_ref).clip = clip;
let block_flow = info.flow_ref.as_block();
block_flow.base.absolute_position_info = self.base.absolute_position_info;
block_flow.base.stacking_relative_position =
stacking_relative_border_box.origin
stacking_relative_border_box.origin;
block_flow.base.stacking_relative_position_of_display_port =
self.base.stacking_relative_position_of_display_port;
}
SpecificFragmentInfo::InlineAbsolute(ref mut info) => {
@ -1528,7 +1532,9 @@ impl Flow for InlineFlow {
stacking_relative_position + *padding_box_origin;
block_flow.base.stacking_relative_position =
stacking_relative_border_box.origin
stacking_relative_border_box.origin;
block_flow.base.stacking_relative_position_of_display_port =
self.base.stacking_relative_position_of_display_port;
}
_ => {}
}