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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CC_TREES_LAYER_TREE_H_ |
| 6 #define CC_TREES_LAYER_TREE_H_ |
| 7 |
| 8 #include <unordered_map> |
| 9 #include <unordered_set> |
| 10 |
| 11 #include "base/macros.h" |
| 12 #include "cc/base/cc_export.h" |
| 13 |
| 14 namespace cc { |
| 15 |
| 16 namespace proto { |
| 17 class LayerTree; |
| 18 class LayerUpdate; |
| 19 } |
| 20 |
| 21 class AnimationHost; |
| 22 class Layer; |
| 23 |
| 24 class CC_EXPORT LayerTree { |
| 25 public: |
| 26 using LayerSet = std::unordered_set<Layer*>; |
| 27 using LayerIdMap = std::unordered_map<int, Layer*>; |
| 28 |
| 29 explicit LayerTree(std::unique_ptr<AnimationHost> animation_host); |
| 30 ~LayerTree(); |
| 31 |
| 32 void RegisterLayer(Layer* layer); |
| 33 void UnregisterLayer(Layer* layer); |
| 34 Layer* LayerById(int id) const; |
| 35 bool UpdateLayers(const LayerList& update_layer_list, |
| 36 bool* content_is_suitable_for_gpu); |
| 37 |
| 38 void AddLayerShouldPushProperties(Layer* layer); |
| 39 void RemoveLayerShouldPushProperties(Layer* layer); |
| 40 std::unordered_set<Layer*>& LayersThatShouldPushProperties(); |
| 41 bool LayerNeedsPushPropertiesForTesting(Layer* layer) const; |
| 42 |
| 43 void ToProtobuf(proto::LayerTree* proto); |
| 44 void FromProtobuf(const proto::LayerTree& proto); |
| 45 |
| 46 AnimationHost* animation_host() const { return animation_host_.get(); } |
| 47 |
| 48 bool in_paint_layer_contents() const { return in_paint_layer_contents_; } |
| 49 |
| 50 private: |
| 51 friend class LayerTreeHostSerializationTest; |
| 52 |
| 53 // Set of layers that need to push properties. |
| 54 LayerSet layers_that_should_push_properties_; |
| 55 |
| 56 // Layer id to Layer map. |
| 57 LayerIdMap layer_id_map_; |
| 58 |
| 59 bool in_paint_layer_contents_; |
| 60 |
| 61 std::unique_ptr<AnimationHost> animation_host_; |
| 62 |
| 63 DISALLOW_COPY_AND_ASSIGN(LayerTree); |
| 64 }; |
| 65 |
| 66 } // namespace cc |
| 67 |
| 68 #endif // CC_TREES_LAYER_TREE_H_ |
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