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Side by Side Diff: cc/trees/layer_tree.h

Issue 2159513003: Setup LayerTree class, refactor 2 functions from LayerTreeHost to it. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Layer GetLayerTree now directly uses LayerTree pointer. Created 4 years, 4 months ago
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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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