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

Issue 21485: Bitmap transport (Closed)
Patch Set: Fix some mac crashes 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_MAC_H_ 5 #ifndef SKIA_EXT_PLATFORM_CANVAS_MAC_H_
6 #define SKIA_EXT_PLATFORM_CANVAS_MAC_H_ 6 #define SKIA_EXT_PLATFORM_CANVAS_MAC_H_
7 7
8 #include "skia/ext/platform_device_mac.h" 8 #include "skia/ext/platform_device_mac.h"
9 9
10 #include "SkCanvas.h" 10 #include "SkCanvas.h"
11 11
12 namespace skia { 12 namespace skia {
13 13
14 // This class is a specialization of the regular SkCanvas that is designed to 14 // This class is a specialization of the regular SkCanvas that is designed to
15 // work with a gfx::PlatformDevice to manage platform-specific drawing. It 15 // work with a gfx::PlatformDevice to manage platform-specific drawing. It
16 // allows using both Skia operations and platform-specific operations. 16 // allows using both Skia operations and platform-specific operations.
17 class PlatformCanvasMac : public SkCanvas { 17 class PlatformCanvasMac : public SkCanvas {
18 public: 18 public:
19 // Set is_opaque if you are going to erase the bitmap and not use 19 // Set is_opaque if you are going to erase the bitmap and not use
20 // tranparency: this will enable some optimizations. The shared_section 20 // tranparency: this will enable some optimizations. The shared_section
21 // parameter is passed to gfx::PlatformDevice::create. See it for details. 21 // parameter is passed to gfx::PlatformDevice::create. See it for details.
22 // 22 //
23 // If you use the version with no arguments, you MUST call initialize() 23 // If you use the version with no arguments, you MUST call initialize()
24 PlatformCanvasMac(); 24 PlatformCanvasMac();
25 PlatformCanvasMac(int width, int height, bool is_opaque); 25 PlatformCanvasMac(int width, int height, bool is_opaque);
26 PlatformCanvasMac(int width, int height, bool is_opaque, 26 PlatformCanvasMac(int width, int height, bool is_opaque,
27 CGContextRef context); 27 CGContextRef context);
28 PlatformCanvasMac(int width, int height, bool is_opaque,
29 uint8_t* context);
28 virtual ~PlatformCanvasMac(); 30 virtual ~PlatformCanvasMac();
29 31
30 // For two-part init, call if you use the no-argument constructor above 32 // For two-part init, call if you use the no-argument constructor above
31 bool initialize(int width, int height, bool is_opaque); 33 bool initialize(int width, int height, bool is_opaque);
34 bool initialize(int width, int height, bool is_opaque, uint8_t* data);
32 35
33 // These calls should surround calls to platform drawing routines. The CG 36 // These calls should surround calls to platform drawing routines. The CG
34 // context returned by beginPlatformPaint is the one that can be used to 37 // context returned by beginPlatformPaint is the one that can be used to
35 // draw into. 38 // draw into.
36 // Call endPlatformPaint when you are done and want to use Skia operations 39 // Call endPlatformPaint when you are done and want to use Skia operations
37 // again; this will synchronize the bitmap. 40 // again; this will synchronize the bitmap.
38 virtual CGContextRef beginPlatformPaint(); 41 virtual CGContextRef beginPlatformPaint();
39 virtual void endPlatformPaint(); 42 virtual void endPlatformPaint();
40 43
41 // Returns the platform device pointer of the topmost rect with a non-empty 44 // Returns the platform device pointer of the topmost rect with a non-empty
(...skipping 42 matching lines...) Expand 10 before | Expand all | Expand 10 after
84 SkDevice* setBitmapDevice(const SkBitmap& bitmap); 87 SkDevice* setBitmapDevice(const SkBitmap& bitmap);
85 88
86 // Disallow copy and assign. 89 // Disallow copy and assign.
87 PlatformCanvasMac(const PlatformCanvasMac&); 90 PlatformCanvasMac(const PlatformCanvasMac&);
88 PlatformCanvasMac& operator=(const PlatformCanvasMac&); 91 PlatformCanvasMac& operator=(const PlatformCanvasMac&);
89 }; 92 };
90 93
91 } // namespace skia 94 } // namespace skia
92 95
93 #endif // SKIA_EXT_PLATFORM_CANVAS_MAC_H_ 96 #endif // SKIA_EXT_PLATFORM_CANVAS_MAC_H_
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