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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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