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Unified Diff: cc/trees/layer_tree_impl.h

Issue 1447893002: compositor-worker: Introduce WebCompositorMutableState (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: . Created 5 years ago
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Index: cc/trees/layer_tree_impl.h
diff --git a/cc/trees/layer_tree_impl.h b/cc/trees/layer_tree_impl.h
index 2b6ad61a232821b77d8a034b5e41bcd863a796f9..4485ee06870a2d3c821860f2a2cfc98816e0eb49 100644
--- a/cc/trees/layer_tree_impl.h
+++ b/cc/trees/layer_tree_impl.h
@@ -5,7 +5,6 @@
#ifndef CC_TREES_LAYER_TREE_IMPL_H_
#define CC_TREES_LAYER_TREE_IMPL_H_
-#include <map>
#include <set>
#include <string>
#include <vector>
@@ -135,6 +134,16 @@ class CC_EXPORT LayerTreeImpl {
void PushPropertiesTo(LayerTreeImpl* tree_impl);
+ struct CC_EXPORT ElementLayers {
+ // Transform and opacity mutations apply to this layer.
+ LayerImpl* main = nullptr;
+ // Scroll mutations apply to this layer.
+ LayerImpl* scroll = nullptr;
+ };
+
+ void AddToElementMap(LayerImpl* layer);
+ void RemoveFromElementMap(LayerImpl* layer);
+ ElementLayers GetMutableLayers(uint64_t element_id);
int source_frame_number() const { return source_frame_number_; }
void set_source_frame_number(int frame_number) {
source_frame_number_ = frame_number;
@@ -458,6 +467,8 @@ class CC_EXPORT LayerTreeImpl {
typedef base::hash_map<int, LayerImpl*> LayerIdMap;
LayerIdMap layer_id_map_;
+ base::hash_map<uint64_t, ElementLayers> element_layers_map_;
+
// Maps from clip layer ids to scroll layer ids. Note that this only includes
// the subset of clip layers that act as scrolling containers. (This is
// derived from LayerImpl::scroll_clip_layer_ and exists to avoid O(n) walks.)

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