1 /* 2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef GraphicsContextPlatformPrivateCG_h 27 #define GraphicsContextPlatformPrivateCG_h 28 29 #include <wtf/RetainPtr.h> 30 #include <CoreGraphics/CGContext.h> 31 32 namespace WebCore { 33 34 enum GraphicsContextCGFlag { 35 IsLayerCGContext = 1 << 0, 36 IsAcceleratedCGContext = 1 << 1 37 }; 38 39 typedef unsigned GraphicsContextCGFlags; 40 41 class GraphicsContextPlatformPrivate { 42 public: 43 GraphicsContextPlatformPrivate(CGContextRef cgContext, GraphicsContextCGFlags flags = 0) m_cgContext(cgContext)44 : m_cgContext(cgContext) 45 #if PLATFORM(WIN) 46 , m_hdc(0) 47 , m_transparencyCount(0) 48 , m_shouldIncludeChildWindows(false) 49 #endif 50 , m_userToDeviceTransformKnownToBeIdentity(false) 51 , m_contextFlags(flags) 52 { 53 } 54 ~GraphicsContextPlatformPrivate()55 ~GraphicsContextPlatformPrivate() 56 { 57 } 58 59 #if PLATFORM(MAC) || PLATFORM(CHROMIUM) 60 // These methods do nothing on Mac. save()61 void save() {} restore()62 void restore() {} flush()63 void flush() {} clip(const FloatRect &)64 void clip(const FloatRect&) {} clip(const Path &)65 void clip(const Path&) {} scale(const FloatSize &)66 void scale(const FloatSize&) {} rotate(float)67 void rotate(float) {} translate(float,float)68 void translate(float, float) {} concatCTM(const AffineTransform &)69 void concatCTM(const AffineTransform&) {} setCTM(const AffineTransform &)70 void setCTM(const AffineTransform&) {} beginTransparencyLayer()71 void beginTransparencyLayer() {} endTransparencyLayer()72 void endTransparencyLayer() {} 73 #endif 74 75 #if PLATFORM(WIN) 76 // On Windows, we need to update the HDC for form controls to draw in the right place. 77 void save(); 78 void restore(); 79 void flush(); 80 void clip(const FloatRect&); 81 void clip(const Path&); 82 void scale(const FloatSize&); 83 void rotate(float); 84 void translate(float, float); 85 void concatCTM(const AffineTransform&); 86 void setCTM(const AffineTransform&); beginTransparencyLayer()87 void beginTransparencyLayer() { m_transparencyCount++; } endTransparencyLayer()88 void endTransparencyLayer() { m_transparencyCount--; } 89 90 HDC m_hdc; 91 unsigned m_transparencyCount; 92 bool m_shouldIncludeChildWindows; 93 #endif 94 95 RetainPtr<CGContextRef> m_cgContext; 96 bool m_userToDeviceTransformKnownToBeIdentity; 97 GraphicsContextCGFlags m_contextFlags; 98 }; 99 100 } 101 102 #endif // GraphicsContextPlatformPrivateCG_h 103