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

Issue 19491: POSIX: bitmap data on the wire (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 11 years, 10 months ago
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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2006-2008 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_PLATFORM_CANVAS_WIN_H_ 5 #ifndef SKIA_EXT_PLATFORM_CANVAS_WIN_H_
6 #define SKIA_EXT_PLATFORM_CANVAS_WIN_H_ 6 #define SKIA_EXT_PLATFORM_CANVAS_WIN_H_
7 7
8 #include <windows.h> 8 #include <windows.h>
9 9
10 #include "skia/ext/platform_device_win.h" 10 #include "skia/ext/platform_device_win.h"
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50 // dummy device so callers do not have to check. If you are concerned about 50 // dummy device so callers do not have to check. If you are concerned about
51 // performance, check the clip before doing any painting. 51 // performance, check the clip before doing any painting.
52 // 52 //
53 // This is different than SkCanvas' getDevice, because that returns the 53 // This is different than SkCanvas' getDevice, because that returns the
54 // bottommost device. 54 // bottommost device.
55 // 55 //
56 // Danger: the resulting device should not be saved. It will be invalidated 56 // Danger: the resulting device should not be saved. It will be invalidated
57 // by the next call to save() or restore(). 57 // by the next call to save() or restore().
58 PlatformDeviceWin& getTopPlatformDevice() const; 58 PlatformDeviceWin& getTopPlatformDevice() const;
59 59
60 static size_t StrideForWidth(unsigned width);
61
60 protected: 62 protected:
61 // Creates a device store for use by the canvas. We override this so that 63 // Creates a device store for use by the canvas. We override this so that
62 // the device is always our own so we know that we can use GDI operations 64 // the device is always our own so we know that we can use GDI operations
63 // on it. Simply calls into createPlatformDevice(). 65 // on it. Simply calls into createPlatformDevice().
64 virtual SkDevice* createDevice(SkBitmap::Config, int width, int height, 66 virtual SkDevice* createDevice(SkBitmap::Config, int width, int height,
65 bool is_opaque, bool isForLayer); 67 bool is_opaque, bool isForLayer);
66 68
67 // Creates a device store for use by the canvas. By default, it creates a 69 // Creates a device store for use by the canvas. By default, it creates a
68 // BitmapPlatformDeviceWin. Can be overridden to change the object type. 70 // BitmapPlatformDeviceWin. Can be overridden to change the object type.
69 virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque, 71 virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque,
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192 // Disallow copy and assign. 194 // Disallow copy and assign.
193 CanvasPaintT(const CanvasPaintT&); 195 CanvasPaintT(const CanvasPaintT&);
194 CanvasPaintT& operator=(const CanvasPaintT&); 196 CanvasPaintT& operator=(const CanvasPaintT&);
195 }; 197 };
196 198
197 typedef CanvasPaintT<PlatformCanvasWin> PlatformCanvasWinPaint; 199 typedef CanvasPaintT<PlatformCanvasWin> PlatformCanvasWinPaint;
198 200
199 } // namespace skia 201 } // namespace skia
200 202
201 #endif // SKIA_EXT_PLATFORM_CANVAS_WIN_H_ 203 #endif // SKIA_EXT_PLATFORM_CANVAS_WIN_H_
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