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
28namespace WebCore {
29
30// FIXME: This would be in GraphicsContextCG.h if that existed.
31CGColorSpaceRef deviceRGBColorSpaceRef();
32
33// FIXME: This would be in GraphicsContextCG.h if that existed.
34CGColorSpaceRef sRGBColorSpaceRef();
35
36class GraphicsContextPlatformPrivate {
37public:
38    GraphicsContextPlatformPrivate(CGContextRef cgContext)
39        : m_cgContext(cgContext)
40#if PLATFORM(WIN)
41        , m_hdc(0)
42        , m_transparencyCount(0)
43        , m_shouldIncludeChildWindows(false)
44#endif
45        , m_userToDeviceTransformKnownToBeIdentity(false)
46    {
47    }
48
49    ~GraphicsContextPlatformPrivate()
50    {
51    }
52
53#if PLATFORM(MAC) || PLATFORM(CHROMIUM)
54    // These methods do nothing on Mac.
55    void save() {}
56    void restore() {}
57    void flush() {}
58    void clip(const FloatRect&) {}
59    void clip(const Path&) {}
60    void scale(const FloatSize&) {}
61    void rotate(float) {}
62    void translate(float, float) {}
63    void concatCTM(const AffineTransform&) {}
64    void beginTransparencyLayer() {}
65    void endTransparencyLayer() {}
66#endif
67
68#if PLATFORM(WIN)
69    // On Windows, we need to update the HDC for form controls to draw in the right place.
70    void save();
71    void restore();
72    void flush();
73    void clip(const FloatRect&);
74    void clip(const Path&);
75    void scale(const FloatSize&);
76    void rotate(float);
77    void translate(float, float);
78    void concatCTM(const AffineTransform&);
79    void beginTransparencyLayer() { m_transparencyCount++; }
80    void endTransparencyLayer() { m_transparencyCount--; }
81
82    HDC m_hdc;
83    unsigned m_transparencyCount;
84    bool m_shouldIncludeChildWindows;
85#endif
86
87    RetainPtr<CGContextRef> m_cgContext;
88    bool m_userToDeviceTransformKnownToBeIdentity;
89};
90
91}
92