| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SKIA_EXT_BITMAP_PLATFORM_DEVICE_SKIA_H_ |
| #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_SKIA_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "skia/ext/platform_device.h" |
| |
| namespace skia { |
| |
| // ----------------------------------------------------------------------------- |
| // For now we just use SkBitmap for SkBitmapDevice |
| // |
| // This is all quite ok for test_shell. In the future we will want to use |
| // shared memory between the renderer and the main process at least. In this |
| // case we'll probably create the buffer from a precreated region of memory. |
| // ----------------------------------------------------------------------------- |
| class BitmapPlatformDevice : public SkBitmapDevice, public PlatformDevice { |
| public: |
| // Construct a BitmapPlatformDevice. |is_opaque| should be set if the caller |
| // knows the bitmap will be completely opaque and allows some optimizations. |
| // The bitmap is not initialized. |
| static BitmapPlatformDevice* Create(int width, int height, bool is_opaque); |
| |
| // Construct a BitmapPlatformDevice, as above. |
| // If |is_opaque| is false, the bitmap is initialized to 0. |
| static BitmapPlatformDevice* CreateAndClear(int width, int height, |
| bool is_opaque); |
| |
| // This doesn't take ownership of |data|. If |data| is null, the bitmap |
| // is not initialized to 0. |
| static BitmapPlatformDevice* Create(int width, int height, bool is_opaque, |
| uint8_t* data); |
| |
| // Create a BitmapPlatformDevice from an already constructed bitmap; |
| // you should probably be using Create(). This may become private later if |
| // we ever have to share state between some native drawing UI and Skia, like |
| // the Windows and Mac versions of this class do. |
| explicit BitmapPlatformDevice(const SkBitmap& other); |
| virtual ~BitmapPlatformDevice(); |
| |
| virtual PlatformSurface BeginPlatformPaint() OVERRIDE; |
| virtual void DrawToNativeContext(PlatformSurface surface, int x, int y, |
| const PlatformRect* src_rect) OVERRIDE; |
| |
| protected: |
| virtual SkBaseDevice* onCreateDevice(const SkImageInfo& info, |
| Usage usage) OVERRIDE; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice); |
| }; |
| |
| } // namespace skia |
| |
| #endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_SKIA_H_ |