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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_BITMAP_PLATFORM_DEVICE_WIN_H_ | 5 #ifndef SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ |
| 6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ | 6 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ |
| 7 | 7 |
| 8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
| 9 #include "base/macros.h" | 9 #include "base/macros.h" |
| 10 #include "skia/ext/platform_device.h" | 10 #include "skia/ext/platform_device.h" |
| 11 | 11 |
| 12 namespace skia { | 12 namespace skia { |
| 13 | 13 |
| 14 class ScopedPlatformPaint; | |
| 15 | |
| 16 // A device is basically a wrapper around SkBitmap that provides a surface for | 14 // A device is basically a wrapper around SkBitmap that provides a surface for |
| 17 // SkCanvas to draw into. Our device provides a surface Windows can also write | 15 // SkCanvas to draw into. Our device provides a surface Windows can also write |
| 18 // to. BitmapPlatformDevice creates a bitmap using CreateDIBSection() in a | 16 // to. BitmapPlatformDevice creates a bitmap using CreateDIBSection() in a |
| 19 // format that Skia supports and can then use this to draw ClearType into, etc. | 17 // format that Skia supports and can then use this to draw ClearType into, etc. |
| 20 // This pixel data is provided to the bitmap that the device contains so that it | 18 // This pixel data is provided to the bitmap that the device contains so that it |
| 21 // can be shared. | 19 // can be shared. |
| 22 class SK_API BitmapPlatformDevice : public SkBitmapDevice, | 20 class SK_API BitmapPlatformDevice : public SkBitmapDevice, |
| 23 public PlatformDevice { | 21 public PlatformDevice { |
| 24 public: | 22 public: |
| 25 // Factory function. is_opaque should be set if the caller knows the bitmap | 23 // Factory function. is_opaque should be set if the caller knows the bitmap |
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| 68 // Create/destroy hdc_, which is the memory DC for our bitmap data. | 66 // Create/destroy hdc_, which is the memory DC for our bitmap data. |
| 69 HDC GetBitmapDC(const SkMatrix& transform, const SkIRect& clip_bounds); | 67 HDC GetBitmapDC(const SkMatrix& transform, const SkIRect& clip_bounds); |
| 70 void ReleaseBitmapDC(); | 68 void ReleaseBitmapDC(); |
| 71 bool IsBitmapDCCreated() const; | 69 bool IsBitmapDCCreated() const; |
| 72 | 70 |
| 73 // Loads the current transform and clip into the context. Can be called even | 71 // Loads the current transform and clip into the context. Can be called even |
| 74 // when |hbitmap_| is NULL (will be a NOP). | 72 // when |hbitmap_| is NULL (will be a NOP). |
| 75 void LoadConfig(const SkMatrix& transform, const SkIRect& clip_bounds); | 73 void LoadConfig(const SkMatrix& transform, const SkIRect& clip_bounds); |
| 76 | 74 |
| 77 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); | 75 DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); |
| 78 friend class ScopedPlatformPaint; | |
| 79 }; | 76 }; |
| 80 | 77 |
| 81 } // namespace skia | 78 } // namespace skia |
| 82 | 79 |
| 83 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ | 80 #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_WIN_H_ |
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