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

Issue 7193040: Revert 91504 - Stop using deprecated factory API for SkDevice (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 9 years, 5 months ago
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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_WIN_H_ 5 #ifndef SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_
6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ 6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/basictypes.h" 9 #include "base/basictypes.h"
10 #include "skia/ext/platform_device_win.h" 10 #include "skia/ext/platform_device_win.h"
11 11
12 namespace skia { 12 namespace skia {
13 13
14 class BitmapPlatformDeviceFactory : public SkDeviceFactory {
15 public:
16 virtual SkDevice* newDevice(SkCanvas* ignored, SkBitmap::Config config,
17 int width, int height,
18 bool isOpaque, bool isForLayer);
19 };
20
14 // A device is basically a wrapper around SkBitmap that provides a surface for 21 // A device is basically a wrapper around SkBitmap that provides a surface for
15 // SkCanvas to draw into. Our device provides a surface Windows can also write 22 // SkCanvas to draw into. Our device provides a surface Windows can also write
16 // to. BitmapPlatformDevice creates a bitmap using CreateDIBSection() in a 23 // to. BitmapPlatformDevice creates a bitmap using CreateDIBSection() in a
17 // format that Skia supports and can then use this to draw ClearType into, etc. 24 // format that Skia supports and can then use this to draw ClearType into, etc.
18 // This pixel data is provided to the bitmap that the device contains so that it 25 // This pixel data is provided to the bitmap that the device contains so that it
19 // can be shared. 26 // can be shared.
20 // 27 //
21 // The device owns the pixel data, when the device goes away, the pixel data 28 // The device owns the pixel data, when the device goes away, the pixel data
22 // also becomes invalid. THIS IS DIFFERENT THAN NORMAL SKIA which uses 29 // also becomes invalid. THIS IS DIFFERENT THAN NORMAL SKIA which uses
23 // reference counting for the pixel data. In normal Skia, you could assign 30 // reference counting for the pixel data. In normal Skia, you could assign
(...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after
61 // overridden from SkDevice. 68 // overridden from SkDevice.
62 virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region, 69 virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region,
63 const SkClipStack&); 70 const SkClipStack&);
64 71
65 protected: 72 protected:
66 // Flushes the Windows device context so that the pixel data can be accessed 73 // Flushes the Windows device context so that the pixel data can be accessed
67 // directly by Skia. Overridden from SkDevice, this is called when Skia 74 // directly by Skia. Overridden from SkDevice, this is called when Skia
68 // starts accessing pixel data. 75 // starts accessing pixel data.
69 virtual void onAccessBitmap(SkBitmap* bitmap); 76 virtual void onAccessBitmap(SkBitmap* bitmap);
70 77
71 virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config, int width, 78 // Override SkDevice.
72 int height, bool isOpaque, 79 virtual SkDeviceFactory* onNewDeviceFactory();
73 Usage usage);
74 80
75 private: 81 private:
76 // Reference counted data that can be shared between multiple devices. This 82 // Reference counted data that can be shared between multiple devices. This
77 // allows copy constructors and operator= for devices to work properly. The 83 // allows copy constructors and operator= for devices to work properly. The
78 // bitmaps used by the base device class are already refcounted and copyable. 84 // bitmaps used by the base device class are already refcounted and copyable.
79 class BitmapPlatformDeviceData; 85 class BitmapPlatformDeviceData;
80 86
81 // Private constructor. The data should already be ref'ed for us. 87 // Private constructor. The data should already be ref'ed for us.
82 BitmapPlatformDevice(BitmapPlatformDeviceData* data, 88 BitmapPlatformDevice(BitmapPlatformDeviceData* data,
83 const SkBitmap& bitmap); 89 const SkBitmap& bitmap);
84 90
85 // Data associated with this device, guaranteed non-null. We hold a reference 91 // Data associated with this device, guaranteed non-null. We hold a reference
86 // to this object. 92 // to this object.
87 BitmapPlatformDeviceData* data_; 93 BitmapPlatformDeviceData* data_;
88 94
89 #ifdef SK_DEBUG 95 #ifdef SK_DEBUG
90 int begin_paint_count_; 96 int begin_paint_count_;
91 #endif 97 #endif
92 98
93 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); 99 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice);
94 }; 100 };
95 101
96 } // namespace skia 102 } // namespace skia
97 103
98 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ 104 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_
99 105
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