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1 // Copyright 2011 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_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_ | |
6 #define CC_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_ | |
7 | |
8 #include "cc/base/cc_export.h" | |
9 #include "cc/resources/content_layer_updater.h" | |
10 #include "skia/ext/refptr.h" | |
11 #include "third_party/skia/include/core/SkBitmap.h" | |
12 | |
13 class SkCanvas; | |
14 | |
15 namespace cc { | |
16 | |
17 class LayerPainter; | |
18 class RenderingStatsInstrumenation; | |
19 | |
20 // This class rasterizes the content_rect into a skia bitmap canvas. It then | |
21 // creates a ResourceUpdate with this bitmap canvas and inserts the | |
22 // ResourceBundle to the provided ResourceUpdateQueue. Actual texture uploading | |
23 // is done by ResourceUpdateController. | |
24 class CC_EXPORT BitmapContentLayerUpdater : public ContentLayerUpdater { | |
25 public: | |
26 class Resource : public LayerUpdater::Resource { | |
27 public: | |
28 Resource(BitmapContentLayerUpdater* updater, | |
29 scoped_ptr<PrioritizedResource> resource); | |
30 ~Resource() override; | |
31 | |
32 void Update(ResourceUpdateQueue* queue, | |
33 const gfx::Rect& source_rect, | |
34 const gfx::Vector2d& dest_offset, | |
35 bool partial_update) override; | |
36 | |
37 private: | |
38 BitmapContentLayerUpdater* updater_; | |
39 | |
40 DISALLOW_COPY_AND_ASSIGN(Resource); | |
41 }; | |
42 | |
43 static scoped_refptr<BitmapContentLayerUpdater> Create( | |
44 scoped_ptr<LayerPainter> painter, | |
45 int layer_id); | |
46 | |
47 scoped_ptr<LayerUpdater::Resource> CreateResource( | |
48 PrioritizedResourceManager* manager) override; | |
49 void PrepareToUpdate(const gfx::Size& content_size, | |
50 const gfx::Rect& paint_rect, | |
51 const gfx::Size& tile_size, | |
52 float contents_width_scale, | |
53 float contents_height_scale) override; | |
54 void UpdateTexture(ResourceUpdateQueue* queue, | |
55 PrioritizedResource* resource, | |
56 const gfx::Rect& source_rect, | |
57 const gfx::Vector2d& dest_offset, | |
58 bool partial_update); | |
59 void SetOpaque(bool opaque) override; | |
60 void ReduceMemoryUsage() override; | |
61 | |
62 protected: | |
63 BitmapContentLayerUpdater( | |
64 scoped_ptr<LayerPainter> painter, | |
65 int layer_id); | |
66 ~BitmapContentLayerUpdater() override; | |
67 | |
68 SkBitmap bitmap_backing_; | |
69 skia::RefPtr<SkCanvas> canvas_; | |
70 gfx::Size canvas_size_; | |
71 | |
72 private: | |
73 DISALLOW_COPY_AND_ASSIGN(BitmapContentLayerUpdater); | |
74 }; | |
75 | |
76 } // namespace cc | |
77 | |
78 #endif // CC_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_ | |
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