1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> 4 * Copyright (C) 2008 Brent Fulgham <bfulgham@gmail.com> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef GraphicsContextPlatformPrivateCairo_h 29 #define GraphicsContextPlatformPrivateCairo_h 30 31 #include "GraphicsContext.h" 32 33 #include "ContextShadow.h" 34 #include "PlatformContextCairo.h" 35 #include "RefPtrCairo.h" 36 #include <cairo.h> 37 #include <math.h> 38 #include <stdio.h> 39 #include <wtf/MathExtras.h> 40 41 #if PLATFORM(GTK) 42 #include <pango/pango.h> 43 typedef struct _GdkExposeEvent GdkExposeEvent; 44 #elif PLATFORM(WIN) 45 #include <cairo-win32.h> 46 #endif 47 48 namespace WebCore { 49 50 class GraphicsContextPlatformPrivate { 51 public: GraphicsContextPlatformPrivate(PlatformContextCairo * newPlatformContext)52 GraphicsContextPlatformPrivate(PlatformContextCairo* newPlatformContext) 53 : platformContext(newPlatformContext) 54 #if PLATFORM(GTK) 55 , expose(0) 56 #elif PLATFORM(WIN) 57 // NOTE: These may note be needed: review and remove once Cairo implementation is complete 58 , m_hdc(0) 59 , m_transparencyCount(0) 60 , m_shouldIncludeChildWindows(false) 61 #endif 62 { 63 } 64 ~GraphicsContextPlatformPrivate()65 virtual ~GraphicsContextPlatformPrivate() 66 { 67 } 68 69 #if PLATFORM(WIN) 70 // On Windows, we need to update the HDC for form controls to draw in the right place. 71 void save(); 72 void restore(); 73 void flush(); 74 void clip(const FloatRect&); 75 void clip(const Path&); 76 void scale(const FloatSize&); 77 void rotate(float); 78 void translate(float, float); 79 void concatCTM(const AffineTransform&); 80 void setCTM(const AffineTransform&); beginTransparencyLayer()81 void beginTransparencyLayer() { m_transparencyCount++; } endTransparencyLayer()82 void endTransparencyLayer() { m_transparencyCount--; } 83 void syncContext(cairo_t* cr); 84 #else 85 // On everything else, we do nothing. save()86 void save() {} restore()87 void restore() {} flush()88 void flush() {} clip(const FloatRect &)89 void clip(const FloatRect&) {} clip(const Path &)90 void clip(const Path&) {} scale(const FloatSize &)91 void scale(const FloatSize&) {} rotate(float)92 void rotate(float) {} translate(float,float)93 void translate(float, float) {} concatCTM(const AffineTransform &)94 void concatCTM(const AffineTransform&) {} setCTM(const AffineTransform &)95 void setCTM(const AffineTransform&) {} beginTransparencyLayer()96 void beginTransparencyLayer() {} endTransparencyLayer()97 void endTransparencyLayer() {} syncContext(cairo_t * cr)98 void syncContext(cairo_t* cr) {} 99 #endif 100 101 PlatformContextCairo* platformContext; 102 Vector<float> layers; 103 ContextShadow shadow; 104 Vector<ContextShadow> shadowStack; 105 106 #if PLATFORM(GTK) 107 GdkEventExpose* expose; 108 #elif PLATFORM(WIN) 109 HDC m_hdc; 110 unsigned m_transparencyCount; 111 bool m_shouldIncludeChildWindows; 112 #endif 113 }; 114 115 // This is a specialized private section for the Cairo GraphicsContext, which knows how 116 // to clean up the heap allocated PlatformContextCairo that we must use for the top-level 117 // GraphicsContext. 118 class GraphicsContextPlatformPrivateToplevel : public GraphicsContextPlatformPrivate { 119 public: GraphicsContextPlatformPrivateToplevel(PlatformContextCairo * platformContext)120 GraphicsContextPlatformPrivateToplevel(PlatformContextCairo* platformContext) 121 : GraphicsContextPlatformPrivate(platformContext) 122 { 123 } 124 ~GraphicsContextPlatformPrivateToplevel()125 virtual ~GraphicsContextPlatformPrivateToplevel() 126 { 127 delete platformContext; 128 } 129 }; 130 131 132 } // namespace WebCore 133 134 #endif // GraphicsContextPlatformPrivateCairo_h 135