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Remove concept of Layers from Servo

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Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.

This change also remove a bunch of dead painting code.
This commit is contained in:
Martin Robinson 2016-10-19 15:14:02 +02:00
parent e667e62f0c
commit ccb7ab926a
21 changed files with 57 additions and 745 deletions
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14
components/layout/webrender_helpers.rs
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@ -26,7 +26,6 @@ trait WebRenderStackingContextConverter {
pipeline_id: webrender_traits::PipelineId,
epoch: webrender_traits::Epoch,
scroll_layer_id: Option<webrender_traits::ScrollLayerId>,
scroll_policy: ScrollPolicy,
frame_builder: &mut WebRenderFrameBuilder)
-> webrender_traits::StackingContextId;
@ -36,7 +35,6 @@ trait WebRenderStackingContextConverter {
pipeline_id: webrender_traits::PipelineId,
epoch: webrender_traits::Epoch,
scroll_layer_id: Option<webrender_traits::ScrollLayerId>,
scroll_policy: ScrollPolicy,
builder: &mut webrender_traits::DisplayListBuilder,
frame_builder: &mut WebRenderFrameBuilder,
force_positioned_stacking_level: bool);
@ -256,7 +254,6 @@ impl WebRenderStackingContextConverter for StackingContext {
pipeline_id: webrender_traits::PipelineId,
epoch: webrender_traits::Epoch,
scroll_layer_id: Option<webrender_traits::ScrollLayerId>,
scroll_policy: ScrollPolicy,
builder: &mut webrender_traits::DisplayListBuilder,
frame_builder: &mut WebRenderFrameBuilder,
_force_positioned_stacking_level: bool) {
@ -278,7 +275,6 @@ impl WebRenderStackingContextConverter for StackingContext {
pipeline_id,
epoch,
scroll_layer_id_for_children,
scroll_policy,
frame_builder);
builder.push_stacking_context(stacking_context_id);
@ -295,14 +291,9 @@ impl WebRenderStackingContextConverter for StackingContext {
pipeline_id: webrender_traits::PipelineId,
epoch: webrender_traits::Epoch,
scroll_layer_id: Option<webrender_traits::ScrollLayerId>,
mut scroll_policy: ScrollPolicy,
frame_builder: &mut WebRenderFrameBuilder)
-> webrender_traits::StackingContextId {
if let Some(ref layer_info) = self.layer_info {
scroll_policy = layer_info.scroll_policy
}
let webrender_scroll_policy = match scroll_policy {
let webrender_scroll_policy = match self.scroll_policy {
ScrollPolicy::Scrollable => webrender_traits::ScrollPolicy::Scrollable,
ScrollPolicy::FixedPosition => webrender_traits::ScrollPolicy::Fixed,
};
@ -353,7 +344,6 @@ impl WebRenderStackingContextConverter for StackingContext {
pipeline_id,
epoch,
None,
scroll_policy,
&mut inner_builder,
frame_builder,
false);
@ -367,7 +357,6 @@ impl WebRenderStackingContextConverter for StackingContext {
pipeline_id,
epoch,
scroll_layer_id,
scroll_policy,
&mut builder,
frame_builder,
false);
@ -397,7 +386,6 @@ impl WebRenderDisplayListConverter for DisplayList {
pipeline_id,
epoch,
scroll_layer_id,
ScrollPolicy::Scrollable,
frame_builder)
}
_ => unreachable!("DisplayList did not start with StackingContext."),