OLD | NEW |
1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_ | 5 #ifndef SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_ |
6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_ | 6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
(...skipping 10 matching lines...) Expand all Loading... |
21 // | 21 // |
22 // The device owns the pixel data, when the device goes away, the pixel data | 22 // The device owns the pixel data, when the device goes away, the pixel data |
23 // also becomes invalid. THIS IS DIFFERENT THAN NORMAL SKIA which uses | 23 // also becomes invalid. THIS IS DIFFERENT THAN NORMAL SKIA which uses |
24 // reference counting for the pixel data. In normal Skia, you could assign | 24 // reference counting for the pixel data. In normal Skia, you could assign |
25 // another bitmap to this device's bitmap and everything will work properly. | 25 // another bitmap to this device's bitmap and everything will work properly. |
26 // For us, that other bitmap will become invalid as soon as the device becomes | 26 // For us, that other bitmap will become invalid as soon as the device becomes |
27 // invalid, which may lead to subtle bugs. Therefore, DO NOT ASSIGN THE | 27 // invalid, which may lead to subtle bugs. Therefore, DO NOT ASSIGN THE |
28 // DEVICE'S PIXEL DATA TO ANOTHER BITMAP, make sure you copy instead. | 28 // DEVICE'S PIXEL DATA TO ANOTHER BITMAP, make sure you copy instead. |
29 class BitmapPlatformDevice : public PlatformDevice, public SkDevice { | 29 class BitmapPlatformDevice : public PlatformDevice, public SkDevice { |
30 public: | 30 public: |
31 // |context| may be NULL. | 31 // Creates a BitmapPlatformDevice instance. |is_opaque| should be set if the |
| 32 // caller knows the bitmap will be completely opaque and allows some |
| 33 // optimizations. |
| 34 // |context| may be NULL. If |context| is NULL, then the bitmap backing store |
| 35 // is not initialized. |
32 static BitmapPlatformDevice* Create(CGContextRef context, | 36 static BitmapPlatformDevice* Create(CGContextRef context, |
33 int width, int height, | 37 int width, int height, |
34 bool is_opaque); | 38 bool is_opaque); |
35 | 39 |
| 40 // Creates a BitmapPlatformDevice instance. If |is_opaque| is false, |
| 41 // then the bitmap is initialzed to 0. |
| 42 static BitmapPlatformDevice* CreateAndClear(int width, int height, |
| 43 bool is_opaque); |
| 44 |
36 // Creates a context for |data| and calls Create. | 45 // Creates a context for |data| and calls Create. |
| 46 // If |data| is NULL, then the bitmap backing store is not initialized. |
37 static BitmapPlatformDevice* CreateWithData(uint8_t* data, | 47 static BitmapPlatformDevice* CreateWithData(uint8_t* data, |
38 int width, int height, | 48 int width, int height, |
39 bool is_opaque); | 49 bool is_opaque); |
40 | 50 |
41 virtual ~BitmapPlatformDevice(); | 51 virtual ~BitmapPlatformDevice(); |
42 | 52 |
43 // PlatformDevice overrides | 53 // PlatformDevice overrides |
44 virtual CGContextRef GetBitmapContext() OVERRIDE; | 54 virtual CGContextRef GetBitmapContext() OVERRIDE; |
45 virtual void DrawToNativeContext(CGContextRef context, int x, int y, | 55 virtual void DrawToNativeContext(CGContextRef context, int x, int y, |
46 const CGRect* src_rect) OVERRIDE; | 56 const CGRect* src_rect) OVERRIDE; |
(...skipping 23 matching lines...) Expand all Loading... |
70 // Data associated with this device, guaranteed non-null. We hold a reference | 80 // Data associated with this device, guaranteed non-null. We hold a reference |
71 // to this object. | 81 // to this object. |
72 BitmapPlatformDeviceData* data_; | 82 BitmapPlatformDeviceData* data_; |
73 | 83 |
74 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); | 84 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); |
75 }; | 85 }; |
76 | 86 |
77 } // namespace skia | 87 } // namespace skia |
78 | 88 |
79 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_ | 89 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_ |
OLD | NEW |