author | Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com> |
Mon, 30 Mar 2009 12:54:55 +0300 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef GraphicsContext_h |
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#define GraphicsContext_h |
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#include "FloatRect.h" |
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#include "Image.h" |
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#include "IntRect.h" |
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#include "Path.h" |
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#include "TextDirection.h" |
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#include <wtf/Noncopyable.h> |
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#include <wtf/Platform.h> |
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#if PLATFORM(CG) |
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typedef struct CGContext PlatformGraphicsContext; |
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#elif PLATFORM(CAIRO) |
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typedef struct _cairo PlatformGraphicsContext; |
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#elif PLATFORM(QT) |
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class QPainter; |
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typedef QPainter PlatformGraphicsContext; |
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#elif PLATFORM(SYMBIAN) |
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class WebCoreGraphicsContext; |
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typedef WebCoreGraphicsContext PlatformGraphicsContext; |
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#else |
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typedef void PlatformGraphicsContext; |
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#endif |
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#if PLATFORM(GTK) |
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typedef struct _GdkDrawable GdkDrawable; |
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typedef struct _GdkEventExpose GdkEventExpose; |
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#endif |
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#if PLATFORM(WIN) |
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typedef struct HDC__* HDC; |
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#endif |
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namespace WebCore { |
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const int cMisspellingLineThickness = 3; |
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const int cMisspellingLinePatternWidth = 4; |
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const int cMisspellingLinePatternGapWidth = 1; |
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class AffineTransform; |
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class Font; |
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class GraphicsContextPrivate; |
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class GraphicsContextPlatformPrivate; |
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class KURL; |
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class Path; |
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class TextRun; |
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class TextStyle; |
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// These bits can be ORed together for a total of 8 possible text drawing modes. |
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const int cTextInvisible = 0; |
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const int cTextFill = 1; |
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const int cTextStroke = 2; |
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const int cTextClip = 4; |
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enum StrokeStyle { |
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NoStroke, |
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SolidStroke, |
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DottedStroke, |
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DashedStroke |
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}; |
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class GraphicsContext : Noncopyable { |
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public: |
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GraphicsContext(PlatformGraphicsContext*); |
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~GraphicsContext(); |
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PlatformGraphicsContext* platformContext() const; |
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const Font& font() const; |
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void setFont(const Font&); |
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float strokeThickness() const; |
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void setStrokeThickness(float); |
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StrokeStyle strokeStyle() const; |
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void setStrokeStyle(const StrokeStyle& style); |
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Color strokeColor() const; |
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void setStrokeColor(const Color&); |
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Color fillColor() const; |
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void setFillColor(const Color&); |
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void save(); |
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void restore(); |
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// These draw methods will do both stroking and filling. |
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void drawRect(const IntRect&); |
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void drawLine(const IntPoint&, const IntPoint&); |
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void drawEllipse(const IntRect&); |
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void drawConvexPolygon(size_t numPoints, const FloatPoint*, bool shouldAntialias = false); |
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// Arc drawing (used by border-radius in CSS) just supports stroking at the moment. |
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void strokeArc(const IntRect&, int startAngle, int angleSpan); |
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void fillRect(const IntRect&, const Color&); |
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void fillRect(const FloatRect&, const Color&); |
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void fillRoundedRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight, const Color&); |
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void clearRect(const FloatRect&); |
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void strokeRect(const FloatRect&, float lineWidth); |
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void drawImage(Image*, const IntPoint&, CompositeOperator = CompositeSourceOver); |
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void drawImage(Image*, const IntRect&, CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false); |
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void drawImage(Image*, const IntPoint& destPoint, const IntRect& srcRect, CompositeOperator = CompositeSourceOver); |
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void drawImage(Image*, const IntRect& destRect, const IntRect& srcRect, CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false); |
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void drawImage(Image*, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1), |
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CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false); |
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void drawTiledImage(Image*, const IntRect& destRect, const IntPoint& srcPoint, const IntSize& tileSize, |
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CompositeOperator = CompositeSourceOver); |
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void drawTiledImage(Image*, const IntRect& destRect, const IntRect& srcRect, |
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Image::TileRule hRule = Image::StretchTile, Image::TileRule vRule = Image::StretchTile, |
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CompositeOperator = CompositeSourceOver); |
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#if PLATFORM(CG) |
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void setUseLowQualityImageInterpolation(bool = true); |
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bool useLowQualityImageInterpolation() const; |
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#else |
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void setUseLowQualityImageInterpolation(bool = true) {} |
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bool useLowQualityImageInterpolation() const { return false; } |
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#endif |
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void clip(const IntRect&); |
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void addRoundedRectClip(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight); |
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void addInnerRoundedRectClip(const IntRect&, int thickness); |
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void clipOut(const IntRect&); |
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void clipOutEllipseInRect(const IntRect&); |
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void clipOutRoundedRect(const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft, const IntSize& bottomRight); |
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// Functions to work around bugs in focus ring clipping on Mac. |
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void setFocusRingClip(const IntRect&); |
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void clearFocusRingClip(); |
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int textDrawingMode(); |
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void setTextDrawingMode(int); |
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void drawText(const TextRun&, const IntPoint&, int from = 0, int to = -1); |
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void drawText(const TextRun&, const IntPoint&, const TextStyle&, int from = 0, int to = -1); |
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void drawBidiText(const TextRun&, const IntPoint&, const TextStyle&); |
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void drawHighlightForText(const TextRun&, const IntPoint&, int h, const TextStyle&, const Color& backgroundColor, int from = 0, int to = -1); |
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FloatRect roundToDevicePixels(const FloatRect&); |
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void drawLineForText(const IntPoint&, int width, bool printing); |
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void drawLineForMisspellingOrBadGrammar(const IntPoint&, int width, bool grammar); |
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bool paintingDisabled() const; |
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void setPaintingDisabled(bool); |
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bool updatingControlTints() const; |
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void setUpdatingControlTints(bool); |
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void beginTransparencyLayer(float opacity); |
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void endTransparencyLayer(); |
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void setShadow(const IntSize&, int blur, const Color&); |
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void clearShadow(); |
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void initFocusRing(int width, int offset); |
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void addFocusRingRect(const IntRect&); |
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void drawFocusRing(const Color&); |
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void clearFocusRing(); |
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IntRect focusRingBoundingRect(); |
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void setLineCap(LineCap); |
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void setLineJoin(LineJoin); |
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void setMiterLimit(float); |
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void setAlpha(float); |
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void setCompositeOperation(CompositeOperator); |
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void beginPath(); |
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void addPath(const Path&); |
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void clip(const Path&); |
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void clipOut(const Path&); |
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void scale(const FloatSize&); |
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void rotate(float angleInRadians); |
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void translate(float x, float y); |
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IntPoint origin(); |
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void setURLForRect(const KURL&, const IntRect&); |
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void concatCTM(const AffineTransform&); |
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#if PLATFORM(WIN) |
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GraphicsContext(HDC); // FIXME: To be removed. |
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HDC getWindowsContext(bool supportAlphaBlend = false, const IntRect* = 0); // The passed in rect is used to create a bitmap for compositing inside transparency layers. |
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void releaseWindowsContext(HDC, bool supportAlphaBlend = false, const IntRect* = 0); // The passed in HDC should be the one handed back by getWindowsContext. |
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#endif |
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#if PLATFORM(QT) |
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void setFillRule(WindRule); |
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PlatformPath* currentPath(); |
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#endif |
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#if PLATFORM(GTK) |
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void setGdkExposeEvent(GdkEventExpose*); |
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GdkDrawable* gdkDrawable() const; |
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GdkEventExpose* gdkExposeEvent() const; |
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IntPoint translatePoint(const IntPoint&) const; |
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#endif |
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private: |
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void savePlatformState(); |
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void restorePlatformState(); |
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void setPlatformTextDrawingMode(int); |
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void setPlatformStrokeColor(const Color&); |
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void setPlatformStrokeStyle(const StrokeStyle&); |
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void setPlatformStrokeThickness(float); |
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void setPlatformFillColor(const Color&); |
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void setPlatformFont(const Font& font); |
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int focusRingWidth() const; |
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int focusRingOffset() const; |
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const Vector<IntRect>& focusRingRects() const; |
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static GraphicsContextPrivate* createGraphicsContextPrivate(); |
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static void destroyGraphicsContextPrivate(GraphicsContextPrivate*); |
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GraphicsContextPrivate* m_common; |
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GraphicsContextPlatformPrivate* m_data; |
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}; |
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} // namespace WebCore |
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#endif // GraphicsContext_h |