OLD | NEW |
| (Empty) |
1 // Copyright 2015 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 CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CRUSHED_SPRITE_LAYER_H_ | |
6 #define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CRUSHED_SPRITE_LAYER_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "chrome/browser/android/compositor/layer/layer.h" | |
10 #include "third_party/skia/include/core/SkBitmap.h" | |
11 #include "third_party/skia/include/core/SkRefCnt.h" | |
12 | |
13 class SkCanvas; | |
14 | |
15 namespace cc { | |
16 class UIResourceLayer; | |
17 } | |
18 | |
19 namespace ui { | |
20 class CrushedSpriteResource; | |
21 class ResourceManager; | |
22 } | |
23 | |
24 namespace android { | |
25 | |
26 // A layer which manages drawing frames from a CrushedSpriteResource into an | |
27 // SkCanvas backed by an SkBitmap. The final SkBitmap is passed to a | |
28 // UIResourceLayer for display. | |
29 class CrushedSpriteLayer : public Layer { | |
30 public: | |
31 static scoped_refptr<CrushedSpriteLayer> Create(); | |
32 | |
33 // Loads the resource, calculates the sprite frame to display based on | |
34 // |completion_percentage|, draws the rectangles for the frame on top | |
35 // of the previous frame and sends to layer_ for display. | |
36 void DrawSpriteFrame(ui::ResourceManager* resource_manager, | |
37 int bitmap_res_id, | |
38 int metadata_res_id, | |
39 float completion_percentage); | |
40 | |
41 // Layer overrides. | |
42 scoped_refptr<cc::Layer> layer() override; | |
43 | |
44 protected: | |
45 CrushedSpriteLayer(); | |
46 ~CrushedSpriteLayer() override; | |
47 | |
48 private: | |
49 // Draws the rectangles for |frame| to |canvas|. | |
50 void DrawRectanglesForFrame(ui::CrushedSpriteResource* resource, | |
51 int frame, | |
52 SkCanvas* canvas); | |
53 | |
54 scoped_refptr<cc::UIResourceLayer> layer_; | |
55 int frame_count_; | |
56 int previous_frame_; | |
57 SkBitmap previous_frame_bitmap_; | |
58 | |
59 DISALLOW_COPY_AND_ASSIGN(CrushedSpriteLayer); | |
60 }; | |
61 | |
62 } // namespace android | |
63 | |
64 #endif // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CRUSHED_SPRITE_LAYER_H_ | |
OLD | NEW |