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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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_PLATFORM_DEVICE_EMF_WIN_H_ | 5 #ifndef SKIA_EXT_VECTOR_PLATFORM_DEVICE_EMF_WIN_H_ |
6 #define SKIA_EXT_VECTOR_PLATFORM_DEVICE_EMF_WIN_H_ | 6 #define SKIA_EXT_VECTOR_PLATFORM_DEVICE_EMF_WIN_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
11 #include "skia/ext/platform_device.h" | 11 #include "skia/ext/platform_device.h" |
12 #include "third_party/skia/include/core/SkMatrix.h" | 12 #include "third_party/skia/include/core/SkMatrix.h" |
13 #include "third_party/skia/include/core/SkRegion.h" | 13 #include "third_party/skia/include/core/SkRegion.h" |
14 | 14 |
15 namespace skia { | 15 namespace skia { |
16 | 16 |
| 17 class SK_API VectorPlatformDeviceEmfFactory : public SkDeviceFactory { |
| 18 public: |
| 19 virtual SkDevice* newDevice(SkCanvas* ignored, SkBitmap::Config config, |
| 20 int width, int height, |
| 21 bool isOpaque, bool isForLayer) OVERRIDE; |
| 22 static PlatformDevice* CreateDevice(int width, int height, bool isOpaque, |
| 23 HANDLE shared_section); |
| 24 }; |
| 25 |
17 // A device is basically a wrapper around SkBitmap that provides a surface for | 26 // A device is basically a wrapper around SkBitmap that provides a surface for |
18 // SkCanvas to draw into. This specific device is not not backed by a surface | 27 // SkCanvas to draw into. This specific device is not not backed by a surface |
19 // and is thus unreadable. This is because the backend is completely vectorial. | 28 // and is thus unreadable. This is because the backend is completely vectorial. |
20 // This device is a simple wrapper over a Windows device context (HDC) handle. | 29 // This device is a simple wrapper over a Windows device context (HDC) handle. |
21 class VectorPlatformDeviceEmf : public PlatformDevice { | 30 class VectorPlatformDeviceEmf : public PlatformDevice { |
22 public: | 31 public: |
23 static PlatformDevice* CreateDevice(int width, int height, bool isOpaque, | |
24 HANDLE shared_section); | |
25 | |
26 // Factory function. The DC is kept as the output context. | 32 // Factory function. The DC is kept as the output context. |
27 static VectorPlatformDeviceEmf* create(HDC dc, int width, int height); | 33 static VectorPlatformDeviceEmf* create(HDC dc, int width, int height); |
28 | 34 |
29 VectorPlatformDeviceEmf(HDC dc, const SkBitmap& bitmap); | 35 VectorPlatformDeviceEmf(HDC dc, const SkBitmap& bitmap); |
30 virtual ~VectorPlatformDeviceEmf(); | 36 virtual ~VectorPlatformDeviceEmf(); |
31 | 37 |
32 // PlatformDevice methods | 38 // PlatformDevice methods |
33 virtual PlatformSurface BeginPlatformPaint(); | 39 virtual PlatformSurface BeginPlatformPaint(); |
34 virtual void DrawToNativeContext(HDC dc, int x, int y, const RECT* src_rect); | 40 virtual void DrawToNativeContext(HDC dc, int x, int y, const RECT* src_rect); |
35 | 41 |
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68 virtual void drawDevice(const SkDraw& draw, SkDevice*, int x, int y, | 74 virtual void drawDevice(const SkDraw& draw, SkDevice*, int x, int y, |
69 const SkPaint&) OVERRIDE; | 75 const SkPaint&) OVERRIDE; |
70 | 76 |
71 virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region, | 77 virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region, |
72 const SkClipStack&); | 78 const SkClipStack&); |
73 | 79 |
74 void LoadClipRegion(); | 80 void LoadClipRegion(); |
75 bool alpha_blend_used() const { return alpha_blend_used_; } | 81 bool alpha_blend_used() const { return alpha_blend_used_; } |
76 | 82 |
77 protected: | 83 protected: |
78 virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config, int width, | 84 // Override from SkDevice (through PlatformDevice). |
79 int height, bool isOpaque, | 85 virtual SkDeviceFactory* onNewDeviceFactory(); |
80 Usage usage); | |
81 | 86 |
82 private: | 87 private: |
83 // Applies the SkPaint's painting properties in the current GDI context, if | 88 // Applies the SkPaint's painting properties in the current GDI context, if |
84 // possible. If GDI can't support all paint's properties, returns false. It | 89 // possible. If GDI can't support all paint's properties, returns false. It |
85 // doesn't execute the "commands" in SkPaint. | 90 // doesn't execute the "commands" in SkPaint. |
86 bool ApplyPaint(const SkPaint& paint); | 91 bool ApplyPaint(const SkPaint& paint); |
87 | 92 |
88 // Selects a new object in the device context. It can be a pen, a brush, a | 93 // Selects a new object in the device context. It can be a pen, a brush, a |
89 // clipping region, a bitmap or a font. Returns the old selected object. | 94 // clipping region, a bitmap or a font. Returns the old selected object. |
90 HGDIOBJ SelectObject(HGDIOBJ object); | 95 HGDIOBJ SelectObject(HGDIOBJ object); |
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129 // True if AlphaBlend() was called during this print. | 134 // True if AlphaBlend() was called during this print. |
130 bool alpha_blend_used_; | 135 bool alpha_blend_used_; |
131 | 136 |
132 DISALLOW_COPY_AND_ASSIGN(VectorPlatformDeviceEmf); | 137 DISALLOW_COPY_AND_ASSIGN(VectorPlatformDeviceEmf); |
133 }; | 138 }; |
134 | 139 |
135 } // namespace skia | 140 } // namespace skia |
136 | 141 |
137 #endif // SKIA_EXT_VECTOR_PLATFORM_DEVICE_EMF_WIN_H_ | 142 #endif // SKIA_EXT_VECTOR_PLATFORM_DEVICE_EMF_WIN_H_ |
138 | 143 |
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