ImageBuffer-less SVG masking and clipping.

Source/core/platform/graphics/ImageBuffer.h

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 25 matching lines @@
 #include "core/platform/graphics/IntSize.h"
 #include "core/platform/graphics/transforms/AffineTransform.h"
 #include "wtf/Forward.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/Uint8ClampedArray.h"
 #include "wtf/Vector.h"
 
 class SkCanvas;
+class SkColorFilter;
 
 namespace WebKit { class WebLayer; }
 
 namespace WebCore {
 
 class Canvas2DLayerBridge;
 class Image;
 class ImageData;
 class IntPoint;
 class IntRect;
@@ skipping 53 matching lines @@
     // or return CopyBackingStore if it doesn't.
     static BackingStoreCopy fastCopyImageMode();
 
     enum CoordinateSystem { LogicalCoordinateSystem, BackingStoreCoordinateSystem };
 
     PassRefPtr<Uint8ClampedArray> getUnmultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
     PassRefPtr<Uint8ClampedArray> getPremultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
 
     void putByteArray(Multiply multiplied, Uint8ClampedArray*, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem = LogicalCoordinateSystem);
 
-    void convertToLuminanceMask();
-
     String toDataURL(const String& mimeType, const double* quality = 0, CoordinateSystem = LogicalCoordinateSystem) const;
     AffineTransform baseTransform() const { return AffineTransform(); }
     void transformColorSpace(ColorSpace srcColorSpace, ColorSpace dstColorSpace);
-    static const Vector<uint8_t>& getLinearRgbLUT();
-    static const Vector<uint8_t>& getDeviceRgbLUT();
+    static PassRefPtr<SkColorFilter> createColorSpaceFilter(ColorSpace srcColorSpace, ColorSpace dstColorSpace);

[Stephen White, 2013/08/28 14:11:10]

I think to keep Skia types out of non-platform/ directories, we'll have to wrap
SkColorFilter in a (new) blink type, or move part of the SVG rendering code into
platform/, if possible.

[f(malita), 2013/08/28 19:54:38]

I made this private, currently only accessible from GraphicsContext &
SkiaImageFilterBuilder
(friend classes). Admittedly, this is not the ideal place for it - we should
find a better
home once ImageBuffer::transformColorSpace() gets retired and we can move the
lookup tables.

     WebKit::WebLayer* platformLayer() const;
 
     // FIXME: current implementations of this method have the restriction that they only work
     // with textures that are RGB or RGBA format, UNSIGNED_BYTE type and level 0, as specified in
     // Extensions3D::canUseCopyTextureCHROMIUM().
     bool copyToPlatformTexture(GraphicsContext3D&, Platform3DObject, GC3Denum, GC3Denum, GC3Dint, bool, bool);
 
 private:
     bool isValid() const;
 
@@ skipping 16 matching lines @@
     // so that create() knows when it should return failure.
     ImageBuffer(const IntSize&, float resolutionScale, RenderingMode, OpacityMode, bool& success);
     ImageBuffer(const IntSize&, float resolutionScale, const GraphicsContext*, bool hasAlpha, bool& success);
 };
 
 String ImageDataToDataURL(const ImageData&, const String& mimeType, const double* quality);
 
 } // namespace WebCore
 
 #endif // ImageBuffer_h