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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_GFX_VECTOR_CANVAS_H_ | |
| 6 #define BASE_GFX_VECTOR_CANVAS_H_ | |
| 7 | |
| 8 #include "base/gfx/platform_canvas_win.h" | |
| 9 #include "base/gfx/vector_device.h" | |
| 10 | |
| 11 namespace gfx { | |
| 12 | |
| 13 // This class is a specialization of the regular PlatformCanvas. It is designed | |
| 14 // to work with a VectorDevice to manage platform-specific drawing. It allows | |
| 15 // using both Skia operations and platform-specific operations. It *doesn't* | |
| 16 // support reading back from the bitmap backstore since it is not used. | |
| 17 class VectorCanvas : public PlatformCanvasWin { | |
| 18 public: | |
| 19 VectorCanvas(); | |
| 20 VectorCanvas(HDC dc, int width, int height); | |
| 21 virtual ~VectorCanvas(); | |
| 22 | |
| 23 // For two-part init, call if you use the no-argument constructor above | |
| 24 bool initialize(HDC context, int width, int height); | |
| 25 | |
| 26 virtual SkBounder* setBounder(SkBounder*); | |
| 27 virtual SkDevice* createDevice(SkBitmap::Config config, | |
| 28 int width, int height, | |
| 29 bool is_opaque, bool isForLayer); | |
| 30 virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter); | |
| 31 | |
| 32 private: | |
| 33 // |is_opaque| is unused. |shared_section| is in fact the HDC used for output. | |
| 34 virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque, | |
| 35 HANDLE shared_section); | |
| 36 | |
| 37 // Returns true if the top device is vector based and not bitmap based. | |
| 38 bool IsTopDeviceVectorial() const; | |
| 39 | |
| 40 DISALLOW_COPY_AND_ASSIGN(VectorCanvas); | |
| 41 }; | |
| 42 | |
| 43 } // namespace gfx | |
| 44 | |
| 45 #endif // BASE_GFX_VECTOR_CANVAS_H_ | |
| 46 | |
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