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