Move the platform files form port to skia for Mac only. Hopefully this won't ...

webkit/port/platform/graphics/skia/public/BitmapPlatformDeviceMac.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 BitmapPlatformDeviceMac_h
-#define BitmapPlatformDeviceMac_h
-
-#include "base/gfx/platform_device_mac.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 CoreGraphics can also
-// write to. BitmapPlatformDeviceMac creates a bitmap using
-// CGCreateBitmapContext() in a format that Skia supports and can then use this
-// to draw text 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 BitmapPlatformDeviceMac : public PlatformDeviceMac {
- 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 BitmapPlatformDeviceMac* Create(CGContextRef context,
-                                         int width,
-                                         int height,
-                                         bool is_opaque);
-
-  // Copy constructor. When copied, devices duplicate their internal data, so
-  // stay linked. This is because their implementation is very heavyweight
-  // (lots of memory and CoreGraphics state). 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 CoreGraphics drawing state will be unpredictable.
-  //
-  // Copy constucting and "=" is designed for saving the device or passing it
-  // around to another routine willing to deal with the bitmap data directly.
-  BitmapPlatformDeviceMac(const BitmapPlatformDeviceMac& other);
-  virtual ~BitmapPlatformDeviceMac();
-
-  // See warning for copy constructor above.
-  BitmapPlatformDeviceMac& operator=(const BitmapPlatformDeviceMac& other);
-
-  virtual CGContextRef GetBitmapContext();
-  virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region);
-
-  virtual void DrawToContext(CGContextRef context, int x, int y,
-                             const CGRect* src_rect);
-  virtual bool IsVectorial() { return false; }
-  virtual void fixupAlphaBeforeCompositing() { };
-  
-  // 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:
-  // 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 BitmapPlatformDeviceMacData;
-
-  BitmapPlatformDeviceMac(BitmapPlatformDeviceMacData* data,
-                          const SkBitmap& bitmap);
-
-  // Flushes the CoreGraphics 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*);
-
-  // Data associated with this device, guaranteed non-null.
-  scoped_refptr<BitmapPlatformDeviceMacData> data_;
-
-  virtual void processPixels(int x, int y,
-                             int width, int height, 
-                             adjustAlpha adjustor);
-};
-
-}  // namespace gfx
-
-#endif  // BitmapPlatformDeviceMac_h
-