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compositing: Translate clip rects into the coordinate systems of child

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layers when doing hit tests.

Fixes clicking on links on the second page of Hacker News.
This commit is contained in:
Patrick Walton 2014-12-12 16:33:36 -08:00
parent e74a57821f
commit fa1e06e7ce
1 changed files with 9 additions and 4 deletions
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13
components/compositing/compositor.rs
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@ -1125,9 +1125,12 @@ impl<Window: WindowMethods> IOCompositor<Window> {
let child_point = point - layer_bounds.origin; let child_point = point - layer_bounds.origin;
for child in layer.children().iter().rev() { for child in layer.children().iter().rev() {
// Translate the clip rect into the child's coordinate system.
let clip_rect_for_child =
clip_rect_for_children.translate(&-*child.content_offset.borrow());
let result = self.find_topmost_layer_at_point_for_layer(child.clone(), let result = self.find_topmost_layer_at_point_for_layer(child.clone(),
child_point, child_point,
&clip_rect_for_children); &clip_rect_for_child);
if result.is_some() { if result.is_some() {
return result; return result;
} }
@ -1145,9 +1148,11 @@ impl<Window: WindowMethods> IOCompositor<Window> {
point: TypedPoint2D<LayerPixel, f32>) point: TypedPoint2D<LayerPixel, f32>)
-> Option<HitTestResult> { -> Option<HitTestResult> {
match self.scene.root { match self.scene.root {
Some(ref layer) => self.find_topmost_layer_at_point_for_layer(layer.clone(), Some(ref layer) => {
point, self.find_topmost_layer_at_point_for_layer(layer.clone(),
&*layer.bounds.borrow()), point,
&*layer.bounds.borrow())
}
None => None, None => None,
} }