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Side by Side Diff: skia/ext/bitmap_platform_device_linux.h

Issue 22796028: Updating Chromium to Skia SkBaseDevice/SkBitmapDevice split (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Added TODOs Created 7 years, 3 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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_LINUX_H_ 5 #ifndef SKIA_EXT_BITMAP_PLATFORM_DEVICE_LINUX_H_
6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_LINUX_H_ 6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_LINUX_H_
7 7
8 #include "base/basictypes.h" 8 #include "base/basictypes.h"
9 #include "base/compiler_specific.h" 9 #include "base/compiler_specific.h"
10 #include "base/memory/ref_counted.h" 10 #include "base/memory/ref_counted.h"
(...skipping 38 matching lines...) Expand 10 before | Expand all | Expand 10 after
49 // to store the backing buffer. This buffer is BGRA in memory (on little-endian 49 // to store the backing buffer. This buffer is BGRA in memory (on little-endian
50 // machines). 50 // machines).
51 // 51 //
52 // For now we are also using Cairo to paint to the Drawables so we provide an 52 // For now we are also using Cairo to paint to the Drawables so we provide an
53 // accessor for getting the surface. 53 // accessor for getting the surface.
54 // 54 //
55 // This is all quite ok for test_shell. In the future we will want to use 55 // This is all quite ok for test_shell. In the future we will want to use
56 // shared memory between the renderer and the main process at least. In this 56 // shared memory between the renderer and the main process at least. In this
57 // case we'll probably create the buffer from a precreated region of memory. 57 // case we'll probably create the buffer from a precreated region of memory.
58 // ----------------------------------------------------------------------------- 58 // -----------------------------------------------------------------------------
59 class BitmapPlatformDevice : public SkDevice, public PlatformDevice { 59 class BitmapPlatformDevice : public SkBitmapDevice, public PlatformDevice {
60 // A reference counted cairo surface 60 // A reference counted cairo surface
61 class BitmapPlatformDeviceData; 61 class BitmapPlatformDeviceData;
62 62
63 public: 63 public:
64 // Create a BitmapPlatformDeviceLinux from an already constructed bitmap; 64 // Create a BitmapPlatformDeviceLinux from an already constructed bitmap;
65 // you should probably be using Create(). This may become private later if 65 // you should probably be using Create(). This may become private later if
66 // we ever have to share state between some native drawing UI and Skia, like 66 // we ever have to share state between some native drawing UI and Skia, like
67 // the Windows and Mac versions of this class do. 67 // the Windows and Mac versions of this class do.
68 // 68 //
69 // This object takes ownership of @data. 69 // This object takes ownership of @data.
70 BitmapPlatformDevice(const SkBitmap& other, BitmapPlatformDeviceData* data); 70 BitmapPlatformDevice(const SkBitmap& other, BitmapPlatformDeviceData* data);
71 virtual ~BitmapPlatformDevice(); 71 virtual ~BitmapPlatformDevice();
72 72
73 // Constructs a device with size |width| * |height| with contents initialized 73 // Constructs a device with size |width| * |height| with contents initialized
74 // to zero. |is_opaque| should be set if the caller knows the bitmap will be 74 // to zero. |is_opaque| should be set if the caller knows the bitmap will be
75 // completely opaque and allows some optimizations. 75 // completely opaque and allows some optimizations.
76 static BitmapPlatformDevice* Create(int width, int height, bool is_opaque); 76 static BitmapPlatformDevice* Create(int width, int height, bool is_opaque);
77 77
78 // Performs the same construction as Create. 78 // Performs the same construction as Create.
79 // Other ports require a separate construction routine because Create does not 79 // Other ports require a separate construction routine because Create does not
80 // initialize the bitmap to 0. 80 // initialize the bitmap to 0.
81 static BitmapPlatformDevice* CreateAndClear(int width, int height, 81 static BitmapPlatformDevice* CreateAndClear(int width, int height,
82 bool is_opaque); 82 bool is_opaque);
83 83
84 // This doesn't take ownership of |data|. If |data| is NULL, the contents 84 // This doesn't take ownership of |data|. If |data| is NULL, the contents
85 // of the device are initialized to 0. 85 // of the device are initialized to 0.
86 static BitmapPlatformDevice* Create(int width, int height, bool is_opaque, 86 static BitmapPlatformDevice* Create(int width, int height, bool is_opaque,
87 uint8_t* data); 87 uint8_t* data);
88 88
89 // Overridden from SkDevice: 89 // Overridden from SkBaseDevice:
90 virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region, 90 virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region,
91 const SkClipStack&) OVERRIDE; 91 const SkClipStack&) OVERRIDE;
92 92
93 // Overridden from PlatformDevice: 93 // Overridden from PlatformDevice:
94 virtual cairo_t* BeginPlatformPaint() OVERRIDE; 94 virtual cairo_t* BeginPlatformPaint() OVERRIDE;
95 virtual void DrawToNativeContext(PlatformSurface surface, int x, int y, 95 virtual void DrawToNativeContext(PlatformSurface surface, int x, int y,
96 const PlatformRect* src_rect) OVERRIDE; 96 const PlatformRect* src_rect) OVERRIDE;
97 97
98 protected: 98 protected:
99 virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config, int width, 99 virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config, int width,
100 int height, bool isOpaque, 100 int height, bool isOpaque,
101 Usage usage) OVERRIDE; 101 Usage usage) OVERRIDE;
102 102
103 private: 103 private:
104 static BitmapPlatformDevice* Create(int width, int height, bool is_opaque, 104 static BitmapPlatformDevice* Create(int width, int height, bool is_opaque,
105 cairo_surface_t* surface); 105 cairo_surface_t* surface);
106 106
107 scoped_refptr<BitmapPlatformDeviceData> data_; 107 scoped_refptr<BitmapPlatformDeviceData> data_;
108 108
109 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); 109 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice);
110 }; 110 };
111 111
112 } // namespace skia 112 } // namespace skia
113 113
114 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_LINUX_H_ 114 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_LINUX_H_
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