1/* 2 * Copyright (C) 2006 Apple 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 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 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 "PlatformContextCairo.h" 34#include "RefPtrCairo.h" 35#include <cairo.h> 36#include <math.h> 37#include <stdio.h> 38 39#if PLATFORM(GTK) 40#include <pango/pango.h> 41typedef struct _GdkExposeEvent GdkExposeEvent; 42#elif PLATFORM(WIN) 43#include <cairo-win32.h> 44#endif 45 46namespace WebCore { 47 48class GraphicsContextPlatformPrivate { 49public: 50 GraphicsContextPlatformPrivate(PlatformContextCairo* newPlatformContext) 51 : platformContext(newPlatformContext) 52#if PLATFORM(GTK) 53 , expose(0) 54#endif 55#if PLATFORM(WIN) || (PLATFORM(GTK) && OS(WINDOWS)) 56 // NOTE: These may note be needed: review and remove once Cairo implementation is complete 57 , m_hdc(0) 58 , m_shouldIncludeChildWindows(false) 59#endif 60 { 61 } 62 63 virtual ~GraphicsContextPlatformPrivate() 64 { 65 } 66 67#if PLATFORM(WIN) 68 // On Windows, we need to update the HDC for form controls to draw in the right place. 69 void save(); 70 void restore(); 71 void flush(); 72 void clip(const FloatRect&); 73 void clip(const Path&); 74 void scale(const FloatSize&); 75 void rotate(float); 76 void translate(float, float); 77 void concatCTM(const AffineTransform&); 78 void setCTM(const AffineTransform&); 79 void syncContext(cairo_t* cr); 80#else 81 // On everything else, we do nothing. 82 void save() {} 83 void restore() {} 84 void flush() {} 85 void clip(const FloatRect&) {} 86 void clip(const Path&) {} 87 void scale(const FloatSize&) {} 88 void rotate(float) {} 89 void translate(float, float) {} 90 void concatCTM(const AffineTransform&) {} 91 void setCTM(const AffineTransform&) {} 92 void syncContext(cairo_t*) { } 93#endif 94 95 PlatformContextCairo* platformContext; 96 Vector<float> layers; 97 98#if PLATFORM(GTK) 99 GdkEventExpose* expose; 100#endif 101#if PLATFORM(WIN) || (PLATFORM(GTK) && OS(WINDOWS)) 102 HDC m_hdc; 103 bool m_shouldIncludeChildWindows; 104#endif 105}; 106 107// This is a specialized private section for the Cairo GraphicsContext, which knows how 108// to clean up the heap allocated PlatformContextCairo that we must use for the top-level 109// GraphicsContext. 110class GraphicsContextPlatformPrivateToplevel : public GraphicsContextPlatformPrivate { 111public: 112 GraphicsContextPlatformPrivateToplevel(PlatformContextCairo* platformContext) 113 : GraphicsContextPlatformPrivate(platformContext) 114 { 115 } 116 117 virtual ~GraphicsContextPlatformPrivateToplevel() 118 { 119 delete platformContext; 120 } 121}; 122 123 124} // namespace WebCore 125 126#endif // GraphicsContextPlatformPrivateCairo_h 127