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layout: Paint stacking contexts' overflow areas properly.

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This was making `box-shadow` not show up in many cases, in particular,
but the effects were not limited to that.
This commit is contained in:
Patrick Walton 2014-12-18 18:59:42 -08:00
parent ba8cf6b0e6
commit 5ea2c6dcfd
30 changed files with 357 additions and 179 deletions
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10
components/compositing/compositor_layer.rs
View file

@ -283,8 +283,7 @@ impl CompositorLayer for Layer<CompositorData> {
self.clamp_scroll_offset_and_scroll_layer(scroll_offset + delta)
}
fn clamp_scroll_offset_and_scroll_layer(&self,
new_offset: TypedPoint2D<LayerPixel, f32>)
fn clamp_scroll_offset_and_scroll_layer(&self, new_offset: TypedPoint2D<LayerPixel, f32>)
-> ScrollEventResult {
let layer_size = self.bounds.borrow().size;
let content_size = calculate_content_size_for_layer(self);
@ -339,17 +338,14 @@ impl CompositorLayer for Layer<CompositorData> {
let _ = chan.send_opt(ConstellationControlMsg::SendEvent(pipeline.id.clone(), message));
}
fn scroll_layer_and_all_child_layers(&self,
new_offset: TypedPoint2D<LayerPixel, f32>)
fn scroll_layer_and_all_child_layers(&self, new_offset: TypedPoint2D<LayerPixel, f32>)
-> bool {
let mut result = false;
// Only scroll this layer if it's not fixed-positioned.
if self.extra_data.borrow().scroll_policy != FixedPosition {
let new_offset = new_offset.to_untyped();
*self.transform.borrow_mut() = identity().translate(new_offset.x,
new_offset.y,
0.0);
*self.transform.borrow_mut() = identity().translate(new_offset.x, new_offset.y, 0.0);
*self.content_offset.borrow_mut() = Point2D::from_untyped(&new_offset);
result = true
}