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 #include <CoreGraphics/CGContext.h> 27 28 namespace WebCore { 29 30 class GraphicsContextPlatformPrivate { 31 public: GraphicsContextPlatformPrivate(CGContextRef cgContext)32 GraphicsContextPlatformPrivate(CGContextRef cgContext) 33 : m_cgContext(cgContext) 34 #if PLATFORM(WIN) 35 , m_hdc(0) 36 , m_transparencyCount(0) 37 , m_shouldIncludeChildWindows(false) 38 #endif 39 , m_userToDeviceTransformKnownToBeIdentity(false) 40 { 41 CGContextRetain(m_cgContext); 42 } 43 ~GraphicsContextPlatformPrivate()44 ~GraphicsContextPlatformPrivate() 45 { 46 CGContextRelease(m_cgContext); 47 } 48 49 #if PLATFORM(MAC) || PLATFORM(CHROMIUM) 50 // These methods do nothing on Mac. save()51 void save() {} restore()52 void restore() {} clip(const FloatRect &)53 void clip(const FloatRect&) {} clip(const Path &)54 void clip(const Path&) {} scale(const FloatSize &)55 void scale(const FloatSize&) {} rotate(float)56 void rotate(float) {} translate(float,float)57 void translate(float, float) {} concatCTM(const TransformationMatrix &)58 void concatCTM(const TransformationMatrix&) {} beginTransparencyLayer()59 void beginTransparencyLayer() {} endTransparencyLayer()60 void endTransparencyLayer() {} 61 #endif 62 63 #if PLATFORM(WIN) 64 // On Windows, we need to update the HDC for form controls to draw in the right place. 65 void save(); 66 void restore(); 67 void clip(const FloatRect&); 68 void clip(const Path&); 69 void scale(const FloatSize&); 70 void rotate(float); 71 void translate(float, float); 72 void concatCTM(const TransformationMatrix&); beginTransparencyLayer()73 void beginTransparencyLayer() { m_transparencyCount++; } endTransparencyLayer()74 void endTransparencyLayer() { m_transparencyCount--; } 75 76 HDC m_hdc; 77 unsigned m_transparencyCount; 78 bool m_shouldIncludeChildWindows; 79 #endif 80 81 CGContextRef m_cgContext; 82 bool m_userToDeviceTransformKnownToBeIdentity; 83 }; 84 85 } 86