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diff --git a/WebCore/platform/graphics/GraphicsContext.h b/WebCore/platform/graphics/GraphicsContext.h
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+/*
+ * Copyright (C) 2003, 2006, 2007 Apple Inc.  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.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef GraphicsContext_h
+#define GraphicsContext_h
+
+#include "DashArray.h"
+#include "FloatRect.h"
+#include "Image.h"
+#include "IntRect.h"
+#include "Path.h"
+#include "TextDirection.h"
+#include <wtf/Noncopyable.h>
+#include <wtf/Platform.h>
+
+#if PLATFORM(CG)
+typedef struct CGContext PlatformGraphicsContext;
+#elif PLATFORM(CAIRO)
+typedef struct _cairo PlatformGraphicsContext;
+#elif PLATFORM(QT)
+QT_BEGIN_NAMESPACE
+class QPainter;
+QT_END_NAMESPACE
+typedef QPainter PlatformGraphicsContext;
+#elif PLATFORM(SGL)
+namespace WebCore {
+class PlatformGraphicsContext;
+}
+class SkPaint;
+struct SkPoint;
+#elif PLATFORM(WX)
+class wxGCDC;
+class wxWindowDC;
+
+// wxGraphicsContext allows us to support Path, etc. 
+// but on some platforms, e.g. Linux, it requires fairly 
+// new software.
+#if USE(WXGC)
+// On OS X, wxGCDC is just a typedef for wxDC, so use wxDC explicitly to make
+// the linker happy.
+#ifdef __APPLE__
+    class wxDC;
+    typedef wxDC PlatformGraphicsContext;
+#else
+    typedef wxGCDC PlatformGraphicsContext;
+#endif
+#else
+    typedef wxWindowDC PlatformGraphicsContext;
+#endif
+#elif PLATFORM(SKIA)
+typedef class PlatformContextSkia PlatformGraphicsContext;
+#else
+typedef void PlatformGraphicsContext;
+#endif
+
+#if PLATFORM(GTK)
+typedef struct _GdkDrawable GdkDrawable;
+typedef struct _GdkEventExpose GdkEventExpose;
+#endif
+
+#if PLATFORM(WIN)
+typedef struct HDC__* HDC;
+#if !PLATFORM(CG)
+// UInt8 is defined in CoreFoundation/CFBase.h
+typedef unsigned char UInt8;
+#endif
+#endif
+
+#if PLATFORM(QT) && defined(Q_WS_WIN)
+#include <windows.h>
+#endif
+
+namespace WebCore {
+
+    const int cMisspellingLineThickness = 3;
+    const int cMisspellingLinePatternWidth = 4;
+    const int cMisspellingLinePatternGapWidth = 1;
+
+    class AffineTransform;
+    class Font;
+    class Generator;
+    class Gradient;
+    class GraphicsContextPrivate;
+    class GraphicsContextPlatformPrivate;
+    class ImageBuffer;
+    class KURL;
+    class Path;
+    class Pattern;
+    class TextRun;
+
+    // These bits can be ORed together for a total of 8 possible text drawing modes.
+    const int cTextInvisible = 0;
+    const int cTextFill = 1;
+    const int cTextStroke = 2;
+    const int cTextClip = 4;
+    
+    enum StrokeStyle {
+        NoStroke,
+        SolidStroke,
+        DottedStroke,
+        DashedStroke
+    };
+
+    enum InterpolationQuality {
+        InterpolationDefault,
+        InterpolationNone,
+        InterpolationLow,
+        InterpolationMedium,
+        InterpolationHigh
+    };
+
+    // FIXME: Currently these constants have to match the values used in the SVG
+    // DOM API. That's a mistake. We need to make cut that dependency.
+    enum GradientSpreadMethod {
+        SpreadMethodPad = 1,
+        SpreadMethodReflect = 2,
+        SpreadMethodRepeat = 3
+    };
+
+    class GraphicsContext : Noncopyable {
+    public:
+        GraphicsContext(PlatformGraphicsContext*);
+        ~GraphicsContext();
+       
+        PlatformGraphicsContext* platformContext() const;
+
+        const Font& font() const;
+        void setFont(const Font&);
+        
+        float strokeThickness() const;
+        void setStrokeThickness(float);
+        StrokeStyle strokeStyle() const;
+        void setStrokeStyle(const StrokeStyle& style);
+        Color strokeColor() const;
+        void setStrokeColor(const Color&);
+        void setStrokePattern(PassRefPtr<Pattern>);
+        void setStrokeGradient(PassRefPtr<Gradient>);
+
+        WindRule fillRule() const;
+        void setFillRule(WindRule);
+        GradientSpreadMethod spreadMethod() const;
+        void setSpreadMethod(GradientSpreadMethod);
+        Color fillColor() const;
+        void setFillColor(const Color&);
+        void setFillPattern(PassRefPtr<Pattern>);
+        void setFillGradient(PassRefPtr<Gradient>);
+
+#if PLATFORM(SGL)
+        /* these should be pused to apple. needed for CanvasStyle.cpp */
+        void setCMYKAFillColor(float c, float m, float y, float k, float a);
+        void setCMYKAStrokeColor(float c, float m, float y, float k, float a);
+        
+        // initialize a paint for filling
+        void setupFillPaint(SkPaint*);
+        // initialize a paint for stroking
+        void setupStrokePaint(SkPaint*);
+        // initialize a paint for a shadow, or if false is returned, the
+        // parameters are left untouched
+        bool setupShadowPaint(SkPaint* paint, SkPoint* offset);
+        // returns true if there is a valid (non-transparent) fill color
+        bool willFill() const;
+        // returns true if there is a valid (non-transparent) stroke color
+        bool willStroke() const;
+
+        /** platform-specific factory method to return a bitmap graphicscontext,
+         called by <canvas> when we need to draw offscreen. Caller is responsible for
+         deleting the context. Use drawOffscreenContext() to draw the context's image
+         onto another graphics context.
+         */
+        static GraphicsContext* createOffscreenContext(int width, int height);
+#endif
+
+        void save();
+        void restore();
+
+        // These draw methods will do both stroking and filling.
+        void drawRect(const IntRect&);
+        void drawLine(const IntPoint&, const IntPoint&);
+        void drawEllipse(const IntRect&);
+        void drawConvexPolygon(size_t numPoints, const FloatPoint*, bool shouldAntialias = false);
+
+        void drawPath();
+        void fillPath();
+        void strokePath();
+
+        // Arc drawing (used by border-radius in CSS) just supports stroking at the moment.
+        void strokeArc(const IntRect&, int startAngle, int angleSpan);
+
+        void fillRect(const FloatRect&);
+        void fillRect(const FloatRect&, const Color&);
+        void fillRect(const FloatRect&, Generator&);
+        void fillRoundedRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight, const Color&);
+
+        void clearRect(const FloatRect&);
+
+        void strokeRect(const FloatRect&);
+        void strokeRect(const FloatRect&, float lineWidth);
+
+        void drawImage(Image*, const IntPoint&, CompositeOperator = CompositeSourceOver);
+        void drawImage(Image*, const IntRect&, CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false);
+        void drawImage(Image*, const IntPoint& destPoint, const IntRect& srcRect, CompositeOperator = CompositeSourceOver);
+        void drawImage(Image*, const IntRect& destRect, const IntRect& srcRect, CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false);
+        void drawImage(Image*, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1),
+                       CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false);
+        void drawTiledImage(Image*, const IntRect& destRect, const IntPoint& srcPoint, const IntSize& tileSize,
+                       CompositeOperator = CompositeSourceOver);
+        void drawTiledImage(Image*, const IntRect& destRect, const IntRect& srcRect, 
+                            Image::TileRule hRule = Image::StretchTile, Image::TileRule vRule = Image::StretchTile,
+                            CompositeOperator = CompositeSourceOver);
+
+        void setImageInterpolationQuality(InterpolationQuality);
+        InterpolationQuality imageInterpolationQuality() const;
+
+        void clip(const FloatRect&);
+        void addRoundedRectClip(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight);
+        void addInnerRoundedRectClip(const IntRect&, int thickness);
+        void clipOut(const IntRect&);
+        void clipOutEllipseInRect(const IntRect&);
+        void clipOutRoundedRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight);
+        void clipToImageBuffer(const FloatRect&, const ImageBuffer*);
+
+        int textDrawingMode();
+        void setTextDrawingMode(int);
+
+        void drawText(const TextRun&, const IntPoint&, int from = 0, int to = -1);
+        void drawBidiText(const TextRun&, const FloatPoint&);
+        void drawHighlightForText(const TextRun&, const IntPoint&, int h, const Color& backgroundColor, int from = 0, int to = -1);
+
+        FloatRect roundToDevicePixels(const FloatRect&);
+        
+        void drawLineForText(const IntPoint&, int width, bool printing);
+        void drawLineForMisspellingOrBadGrammar(const IntPoint&, int width, bool grammar);
+        
+        bool paintingDisabled() const;
+        void setPaintingDisabled(bool);
+        
+        bool updatingControlTints() const;
+        void setUpdatingControlTints(bool);
+
+        void beginTransparencyLayer(float opacity);
+        void endTransparencyLayer();
+
+        void setShadow(const IntSize&, int blur, const Color&);
+        bool getShadow(IntSize&, int&, Color&) const;
+        void clearShadow();
+
+        void initFocusRing(int width, int offset);
+        void addFocusRingRect(const IntRect&);
+        void drawFocusRing(const Color&);
+        void clearFocusRing();
+        IntRect focusRingBoundingRect();
+
+        void setLineCap(LineCap);
+        void setLineDash(const DashArray&, float dashOffset);
+        void setLineJoin(LineJoin);
+        void setMiterLimit(float);
+
+        void setAlpha(float);
+#if PLATFORM(CAIRO)
+        float getAlpha();
+#endif
+
+        void setCompositeOperation(CompositeOperator);
+
+        void beginPath();
+        void addPath(const Path&);
+
+        void clip(const Path&);
+        void clipOut(const Path&);
+
+        void scale(const FloatSize&);
+        void rotate(float angleInRadians);
+        void translate(float x, float y);
+        IntPoint origin();
+        
+        void setURLForRect(const KURL&, const IntRect&);
+
+        void concatCTM(const AffineTransform&);
+        AffineTransform getCTM() const;
+
+        void setUseAntialiasing(bool = true);
+
+#if PLATFORM(WIN)
+        GraphicsContext(HDC, bool hasAlpha = false); // FIXME: To be removed.
+        bool inTransparencyLayer() const;
+        HDC getWindowsContext(const IntRect&, bool supportAlphaBlend = true, bool mayCreateBitmap = true); // The passed in rect is used to create a bitmap for compositing inside transparency layers.
+        void releaseWindowsContext(HDC, const IntRect&, bool supportAlphaBlend = true, bool mayCreateBitmap = true);    // The passed in HDC should be the one handed back by getWindowsContext.
+
+        class WindowsBitmap : public Noncopyable {
+        public:
+            WindowsBitmap(HDC, IntSize);
+            ~WindowsBitmap();
+
+            HDC hdc() const { return m_hdc; }
+            UInt8* buffer() const { return m_bitmapBuffer; }
+            unsigned bufferLength() const { return m_bitmapBufferLength; }
+            IntSize size() const { return m_size; }
+            unsigned bytesPerRow() const { return m_bytesPerRow; }
+
+        private:
+            HDC m_hdc;
+            HBITMAP m_bitmap;
+            UInt8* m_bitmapBuffer;
+            unsigned m_bitmapBufferLength;
+            IntSize m_size;
+            unsigned m_bytesPerRow;
+        };
+
+        WindowsBitmap* createWindowsBitmap(IntSize);
+        // The bitmap should be non-premultiplied.
+        void drawWindowsBitmap(WindowsBitmap*, const IntPoint&);
+#endif
+
+#if PLATFORM(QT) && defined(Q_WS_WIN)
+        HDC getWindowsContext(const IntRect&, bool supportAlphaBlend = true, bool mayCreateBitmap = true);
+        void releaseWindowsContext(HDC, const IntRect&, bool supportAlphaBlend = true, bool mayCreateBitmap = true);
+#endif
+
+#if PLATFORM(QT)
+        bool inTransparencyLayer() const;
+        PlatformPath* currentPath();
+#endif
+
+#if PLATFORM(GTK)
+        void setGdkExposeEvent(GdkEventExpose*);
+        GdkDrawable* gdkDrawable() const;
+        GdkEventExpose* gdkExposeEvent() const;
+#endif
+
+    private:
+        void savePlatformState();
+        void restorePlatformState();
+
+        void setPlatformTextDrawingMode(int);
+        void setPlatformFont(const Font& font);
+
+        void setPlatformStrokeColor(const Color&);
+        void setPlatformStrokeStyle(const StrokeStyle&);
+        void setPlatformStrokeThickness(float);
+
+        void setPlatformFillColor(const Color&);
+
+        void setPlatformShadow(const IntSize&, int blur, const Color&);
+        void clearPlatformShadow();
+
+        int focusRingWidth() const;
+        int focusRingOffset() const;
+        const Vector<IntRect>& focusRingRects() const;
+
+        static GraphicsContextPrivate* createGraphicsContextPrivate();
+        static void destroyGraphicsContextPrivate(GraphicsContextPrivate*);
+
+        GraphicsContextPrivate* m_common;
+        GraphicsContextPlatformPrivate* m_data; // Deprecated; m_commmon can just be downcasted. To be removed.
+    };
+
+} // namespace WebCore
+
+#endif // GraphicsContext_h