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Don't let base layers override root layer size

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Base layers (the background layer of each frame) shouldn't override the
size of their root layers. This allows base layers to scroll inside
root layer frames. This does mean that when determining the maximum
scroll position, we need to look at the size of scrolling root children
though.
This commit is contained in:
Martin Robinson 2014-09-23 16:46:13 -07:00
parent e01c5cd863
commit f346a215f3
3 changed files with 17 additions and 4 deletions
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2
components/compositing/compositor.rs
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@ -500,7 +500,7 @@ impl IOCompositor {
let need_new_root_layer = !self.update_layer_if_exists(layer_properties);
if need_new_root_layer {
let root_layer = self.find_pipeline_root_layer(layer_properties.pipeline_id);
CompositorData::update_layer(root_layer.clone(), layer_properties);
CompositorData::update_layer_except_size(root_layer.clone(), layer_properties);
let root_layer_pipeline = root_layer.extra_data.borrow().pipeline.clone();
let first_child = CompositorData::new_layer(root_layer_pipeline.clone(),