diff options
Diffstat (limited to 'base/gfx/bitmap_platform_device_win.h')
-rw-r--r-- | base/gfx/bitmap_platform_device_win.h | 104 |
1 files changed, 3 insertions, 101 deletions
diff --git a/base/gfx/bitmap_platform_device_win.h b/base/gfx/bitmap_platform_device_win.h index fef7217..566e302 100644 --- a/base/gfx/bitmap_platform_device_win.h +++ b/base/gfx/bitmap_platform_device_win.h @@ -5,107 +5,9 @@ #ifndef BASE_GFX_BITMAP_PLATFORM_DEVICE_WIN_H_ #define BASE_GFX_BITMAP_PLATFORM_DEVICE_WIN_H_ -#include "base/gfx/platform_device_win.h" -#include "base/ref_counted.h" - -namespace gfx { - -// A device is basically a wrapper around SkBitmap that provides a surface for -// SkCanvas to draw into. Our device provides a surface Windows can also write -// to. BitmapPlatformDeviceWin creates a bitmap using CreateDIBSection() in a -// format that Skia supports and can then use this to draw ClearType into, etc. -// This pixel data is provided to the bitmap that the device contains so that it -// can be shared. -// -// The device owns the pixel data, when the device goes away, the pixel data -// also becomes invalid. THIS IS DIFFERENT THAN NORMAL SKIA which uses -// reference counting for the pixel data. In normal Skia, you could assign -// another bitmap to this device's bitmap and everything will work properly. -// For us, that other bitmap will become invalid as soon as the device becomes -// invalid, which may lead to subtle bugs. Therefore, DO NOT ASSIGN THE -// DEVICE'S PIXEL DATA TO ANOTHER BITMAP, make sure you copy instead. -class BitmapPlatformDeviceWin : public PlatformDeviceWin { - public: - // Factory function. The screen DC is used to create the bitmap, and will not - // be stored beyond this function. is_opaque should be set if the caller - // knows the bitmap will be completely opaque and allows some optimizations. - // - // The shared_section parameter is optional (pass NULL for default behavior). - // If shared_section is non-null, then it must be a handle to a file-mapping - // object returned by CreateFileMapping. See CreateDIBSection for details. - static BitmapPlatformDeviceWin* create(HDC screen_dc, - int width, - int height, - bool is_opaque, - HANDLE shared_section); - - // Copy constructor. When copied, devices duplicate their internal data, so - // stay linked. This is because their implementation is very heavyweight - // (lots of memory and some GDI objects). If a device has been copied, both - // clip rects and other state will stay in sync. - // - // This means it will NOT work to duplicate a device and assign it to a - // canvas, because the two canvases will each set their own clip rects, and - // the resulting GDI clip rect will be random. - // - // Copy constucting and "=" is designed for saving the device or passing it - // around to another routine willing to deal with the bitmap data directly. - BitmapPlatformDeviceWin(const BitmapPlatformDeviceWin& other); - virtual ~BitmapPlatformDeviceWin(); - - // See warning for copy constructor above. - BitmapPlatformDeviceWin& operator=(const BitmapPlatformDeviceWin& other); - - // Retrieves the bitmap DC, which is the memory DC for our bitmap data. The - // bitmap DC is lazy created. - virtual HDC getBitmapDC(); - virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region); - - virtual void drawToHDC(HDC dc, int x, int y, const RECT* src_rect); - virtual void prepareForGDI(int x, int y, int width, int height); - virtual void postProcessGDI(int x, int y, int width, int height); - virtual void makeOpaque(int x, int y, int width, int height); - virtual void fixupAlphaBeforeCompositing(); - virtual bool IsVectorial() { return false; } - - // Returns the color value at the specified location. This does not - // consider any transforms that may be set on the device. - SkColor getColorAt(int x, int y); - - protected: - // Flushes the Windows device context so that the pixel data can be accessed - // directly by Skia. Overridden from SkDevice, this is called when Skia - // starts accessing pixel data. - virtual void onAccessBitmap(SkBitmap* bitmap); - - private: - // Function pointer used by the processPixels method for setting the alpha - // value of a particular pixel. - typedef void (*adjustAlpha)(uint32_t* pixel); - - // Reference counted data that can be shared between multiple devices. This - // allows copy constructors and operator= for devices to work properly. The - // bitmaps used by the base device class are already refcounted and copyable. - class BitmapPlatformDeviceWinData; - - // Private constructor. - BitmapPlatformDeviceWin(BitmapPlatformDeviceWinData* data, - const SkBitmap& bitmap); - - // Loops through each of the pixels in the specified range, invoking - // adjustor for the alpha value of each pixel. If |width| or |height| are -1, - // the available width/height is used. - template<adjustAlpha adjustor> - void processPixels(int x, - int y, - int width, - int height); - - // Data associated with this device, guaranteed non-null. - scoped_refptr<BitmapPlatformDeviceWinData> data_; -}; - -} // namespace gfx +// TODO(brettw) this file should be removed and the includes changed to this +// new location. +#include "webkit/port/platform/graphics/skia/public/BitmapPlatformDeviceWin.h" #endif // BASE_GFX_BITMAP_PLATFORM_DEVICE_WIN_H_ |