Index: webkit/port/platform/graphics/skia/public/BitmapPlatformDeviceMac.h |
=================================================================== |
--- webkit/port/platform/graphics/skia/public/BitmapPlatformDeviceMac.h (revision 5826) |
+++ webkit/port/platform/graphics/skia/public/BitmapPlatformDeviceMac.h (working copy) |
@@ -1,95 +0,0 @@ |
-// 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 |
- |