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 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 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#ifndef GraphicsContextPlatformPrivateCG_h
27#define GraphicsContextPlatformPrivateCG_h
28
29#include <wtf/RetainPtr.h>
30#include <CoreGraphics/CGContext.h>
31
32namespace WebCore {
33
34enum GraphicsContextCGFlag {
35    IsLayerCGContext = 1 << 0,
36    IsAcceleratedCGContext = 1 << 1
37};
38
39typedef unsigned GraphicsContextCGFlags;
40
41class GraphicsContextPlatformPrivate {
42public:
43    GraphicsContextPlatformPrivate(CGContextRef cgContext, GraphicsContextCGFlags flags = 0)
44        : m_cgContext(cgContext)
45#if PLATFORM(WIN)
46        , m_hdc(0)
47        , m_shouldIncludeChildWindows(false)
48#endif
49        , m_userToDeviceTransformKnownToBeIdentity(false)
50        , m_contextFlags(flags)
51    {
52    }
53
54#if PLATFORM(COCOA)
55    // These methods do nothing on Mac.
56    void save() {}
57    void restore() {}
58    void flush() {}
59    void clip(const FloatRect&) {}
60    void clip(const Path&) {}
61    void scale(const FloatSize&) {}
62    void rotate(float) {}
63    void translate(float, float) {}
64    void concatCTM(const AffineTransform&) {}
65    void setCTM(const AffineTransform&) {}
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 setCTM(const AffineTransform&);
80
81    HDC m_hdc;
82    bool m_shouldIncludeChildWindows;
83#endif
84
85    RetainPtr<CGContextRef> m_cgContext;
86    bool m_userToDeviceTransformKnownToBeIdentity;
87    GraphicsContextCGFlags m_contextFlags;
88};
89
90}
91
92#endif // GraphicsContextPlatformPrivateCG_h
93