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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_COMPOSITOR_PAINT_RECORDER_H_ | 5 #ifndef UI_COMPOSITOR_PAINT_RECORDER_H_ |
6 #define UI_COMPOSITOR_PAINT_RECORDER_H_ | 6 #define UI_COMPOSITOR_PAINT_RECORDER_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
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22 class PaintContext; | 22 class PaintContext; |
23 | 23 |
24 // A class to hide the complexity behind setting up a recording into a | 24 // A class to hide the complexity behind setting up a recording into a |
25 // DisplayItem. This is meant to be short-lived within the scope of recording | 25 // DisplayItem. This is meant to be short-lived within the scope of recording |
26 // taking place, the DisplayItem should be removed from the PaintRecorder once | 26 // taking place, the DisplayItem should be removed from the PaintRecorder once |
27 // recording is complete and can be cached. | 27 // recording is complete and can be cached. |
28 class COMPOSITOR_EXPORT PaintRecorder { | 28 class COMPOSITOR_EXPORT PaintRecorder { |
29 public: | 29 public: |
30 // The |cache| is owned by the caller and must be kept alive while | 30 // The |cache| is owned by the caller and must be kept alive while |
31 // PaintRecorder is in use. Canvas is bounded by |recording_size|. | 31 // PaintRecorder is in use. Canvas is bounded by |recording_size|. |
| 32 // |recording_size| should be in pixels if pixel canvas is enabled. |
32 PaintRecorder(const PaintContext& context, | 33 PaintRecorder(const PaintContext& context, |
33 const gfx::Size& recording_size, | 34 const gfx::Size& recording_size, |
34 PaintCache* cache); | 35 PaintCache* cache); |
| 36 // |recording_size| should always be in DIPs. |
35 PaintRecorder(const PaintContext& context, const gfx::Size& recording_size); | 37 PaintRecorder(const PaintContext& context, const gfx::Size& recording_size); |
36 ~PaintRecorder(); | 38 ~PaintRecorder(); |
37 | 39 |
38 // Gets a gfx::Canvas for painting into. | 40 // Gets a gfx::Canvas for painting into. |
39 gfx::Canvas* canvas() { return &canvas_; } | 41 gfx::Canvas* canvas() { return &canvas_; } |
40 | 42 |
41 private: | 43 private: |
42 const PaintContext& context_; | 44 const PaintContext& context_; |
43 cc::RecordPaintCanvas record_canvas_; | 45 cc::RecordPaintCanvas record_canvas_; |
44 gfx::Canvas canvas_; | 46 gfx::Canvas canvas_; |
45 PaintCache* cache_; | 47 PaintCache* cache_; |
46 gfx::Size recording_size_; | 48 gfx::Size recording_size_; |
47 | 49 |
48 DISALLOW_COPY_AND_ASSIGN(PaintRecorder); | 50 DISALLOW_COPY_AND_ASSIGN(PaintRecorder); |
49 }; | 51 }; |
50 | 52 |
51 } // namespace ui | 53 } // namespace ui |
52 | 54 |
53 #endif // UI_COMPOSITOR_PAINT_RECORDER_H_ | 55 #endif // UI_COMPOSITOR_PAINT_RECORDER_H_ |
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