Transparency

skia/ext/bitmap_platform_device_win.h

 // Copyright (c) 2006-2008 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_BITMAP_PLATFORM_DEVICE_WIN_H_
 #define SKIA_BITMAP_PLATFORM_DEVICE_WIN_H_
 
 #include "skia/ext/platform_device_win.h"
 
 namespace skia {
@@ skipping 43 matching lines @@
 
   // 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. The data should already be ref'ed for us.
   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. We hold a reference
   // to this object.
   BitmapPlatformDeviceWinData* data_;
 };
 
 }  // namespace skia
 
 #endif  // SKIA_BITMAP_PLATFORM_DEVICE_WIN_H_