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| 1 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2009 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_VECTOR_CANVAS_H_ | 5 #ifndef SKIA_EXT_VECTOR_CANVAS_H_ | 
| 6 #define SKIA_EXT_VECTOR_CANVAS_H_ | 6 #define SKIA_EXT_VECTOR_CANVAS_H_ | 
| 7 | 7 | 
| 8 #include "skia/ext/platform_canvas.h" | 8 #include "skia/ext/platform_canvas.h" | 
| 9 #include "skia/ext/vector_platform_device.h" | 9 #include "skia/ext/vector_platform_device.h" | 
| 10 | 10 | 
| 11 #if defined(__linux__) | 11 #if defined(__linux__) || defined(__FreeBSD__) | 
| 12 typedef struct _cairo cairo_t; | 12 typedef struct _cairo cairo_t; | 
| 13 #endif | 13 #endif | 
| 14 | 14 | 
| 15 namespace skia { | 15 namespace skia { | 
| 16 | 16 | 
| 17 // This class is a specialization of the regular PlatformCanvas. It is designed | 17 // This class is a specialization of the regular PlatformCanvas. It is designed | 
| 18 // to work with a VectorDevice to manage platform-specific drawing. It allows | 18 // to work with a VectorDevice to manage platform-specific drawing. It allows | 
| 19 // using both Skia operations and platform-specific operations. It *doesn't* | 19 // using both Skia operations and platform-specific operations. It *doesn't* | 
| 20 // support reading back from the bitmap backstore since it is not used. | 20 // support reading back from the bitmap backstore since it is not used. | 
| 21 class VectorCanvas : public PlatformCanvas { | 21 class VectorCanvas : public PlatformCanvas { | 
| 22  public: | 22  public: | 
| 23   VectorCanvas(); | 23   VectorCanvas(); | 
| 24 #if defined(WIN32) | 24 #if defined(WIN32) | 
| 25   VectorCanvas(HDC dc, int width, int height); | 25   VectorCanvas(HDC dc, int width, int height); | 
| 26 #elif defined(__linux__) | 26 #elif defined(__linux__) || defined(__FreeBSD__) | 
| 27   // Caller owns |context|. Ownership is not transferred. | 27   // Caller owns |context|. Ownership is not transferred. | 
| 28   VectorCanvas(cairo_t* context, int width, int height); | 28   VectorCanvas(cairo_t* context, int width, int height); | 
| 29 #endif | 29 #endif | 
| 30   virtual ~VectorCanvas(); | 30   virtual ~VectorCanvas(); | 
| 31 | 31 | 
| 32   // 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 | 
| 33 #if defined(WIN32) | 33 #if defined(WIN32) | 
| 34   bool initialize(HDC context, int width, int height); | 34   bool initialize(HDC context, int width, int height); | 
| 35 #elif defined(__linux__) | 35 #elif defined(__linux__) || defined(__FreeBSD__) | 
| 36   // Ownership of |context| is not transferred. | 36   // Ownership of |context| is not transferred. | 
| 37   bool initialize(cairo_t* context, int width, int height); | 37   bool initialize(cairo_t* context, int width, int height); | 
| 38 #endif | 38 #endif | 
| 39 | 39 | 
| 40   virtual SkBounder* setBounder(SkBounder* bounder); | 40   virtual SkBounder* setBounder(SkBounder* bounder); | 
| 41 #if defined(WIN32) || defined(__linux__) | 41 #if defined(WIN32) || defined(__linux__) || defined(__FreeBSD__) | 
| 42   virtual SkDevice* createDevice(SkBitmap::Config config, | 42   virtual SkDevice* createDevice(SkBitmap::Config config, | 
| 43                                  int width, int height, | 43                                  int width, int height, | 
| 44                                  bool is_opaque, bool isForLayer); | 44                                  bool is_opaque, bool isForLayer); | 
| 45 #endif | 45 #endif | 
| 46   virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter); | 46   virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter); | 
| 47 | 47 | 
| 48  private: | 48  private: | 
| 49 #if defined(WIN32) | 49 #if defined(WIN32) | 
| 50   // |shared_section| is in fact the HDC used for output. |is_opaque| is unused. | 50   // |shared_section| is in fact the HDC used for output. |is_opaque| is unused. | 
| 51   virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque, | 51   virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque, | 
| 52                                          HANDLE shared_section); | 52                                          HANDLE shared_section); | 
| 53 #elif defined(__linux__) | 53 #elif defined(__linux__) || defined(__FreeBSD__) | 
| 54   // Ownership of |context| is not transferred. |is_opaque| is unused. | 54   // Ownership of |context| is not transferred. |is_opaque| is unused. | 
| 55   virtual SkDevice* createPlatformDevice(cairo_t* context, | 55   virtual SkDevice* createPlatformDevice(cairo_t* context, | 
| 56                                          int width, int height, | 56                                          int width, int height, | 
| 57                                          bool is_opaque); | 57                                          bool is_opaque); | 
| 58 #endif | 58 #endif | 
| 59 | 59 | 
| 60   // Returns true if the top device is vector based and not bitmap based. | 60   // Returns true if the top device is vector based and not bitmap based. | 
| 61   bool IsTopDeviceVectorial() const; | 61   bool IsTopDeviceVectorial() const; | 
| 62 | 62 | 
| 63   // Copy & assign are not supported. | 63   // Copy & assign are not supported. | 
| 64   VectorCanvas(const VectorCanvas&); | 64   VectorCanvas(const VectorCanvas&); | 
| 65   const VectorCanvas& operator=(const VectorCanvas&); | 65   const VectorCanvas& operator=(const VectorCanvas&); | 
| 66 }; | 66 }; | 
| 67 | 67 | 
| 68 }  // namespace skia | 68 }  // namespace skia | 
| 69 | 69 | 
| 70 #endif  // SKIA_EXT_VECTOR_CANVAS_H_ | 70 #endif  // SKIA_EXT_VECTOR_CANVAS_H_ | 
| 71 | 71 | 
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