1/*
2 * Copyright (C) 2009 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WebImage_h
32#define WebImage_h
33
34#include "WebCommon.h"
35
36#if WEBKIT_USING_SKIA
37#include <SkBitmap.h>
38#elif WEBKIT_USING_CG
39typedef struct CGImage* CGImageRef;
40#endif
41
42#if WEBKIT_IMPLEMENTATION
43namespace WebCore { class Image; }
44namespace WTF { template <typename T> class PassRefPtr; }
45#endif
46
47namespace WebKit {
48
49class WebData;
50struct WebSize;
51
52// A container for an ARGB bitmap.
53class WebImage {
54public:
55    ~WebImage() { reset(); }
56
57    WebImage() { init(); }
58    WebImage(const WebImage& image)
59    {
60        init();
61        assign(image);
62    }
63
64    WebImage& operator=(const WebImage& image)
65    {
66        assign(image);
67        return *this;
68    }
69
70    // Decodes the given image data.  If the image has multiple frames,
71    // then the frame whose size is desiredSize is returned.  Otherwise,
72    // the first frame is returned.
73    WEBKIT_API static WebImage fromData(const WebData&, const WebSize& desiredSize);
74
75    WEBKIT_API void reset();
76    WEBKIT_API void assign(const WebImage&);
77
78    WEBKIT_API bool isNull() const;
79    WEBKIT_API WebSize size() const;
80
81#if WEBKIT_IMPLEMENTATION
82    WebImage(const WTF::PassRefPtr<WebCore::Image>&);
83    WebImage& operator=(const WTF::PassRefPtr<WebCore::Image>&);
84#endif
85
86#if WEBKIT_USING_SKIA
87    WebImage(const SkBitmap& bitmap) : m_bitmap(bitmap) { }
88
89    WebImage& operator=(const SkBitmap& bitmap)
90    {
91        m_bitmap = bitmap;
92        return *this;
93    }
94
95    SkBitmap& getSkBitmap() { return m_bitmap; }
96    const SkBitmap& getSkBitmap() const { return m_bitmap; }
97
98private:
99    void init() { }
100    SkBitmap m_bitmap;
101
102#elif WEBKIT_USING_CG
103    WebImage(CGImageRef imageRef)
104    {
105        init();
106        assign(imageRef);
107    }
108
109    WebImage& operator=(CGImageRef imageRef)
110    {
111        assign(imageRef);
112        return *this;
113    }
114
115    CGImageRef getCGImageRef() const { return m_imageRef; }
116
117private:
118    void init() { m_imageRef = 0; }
119    void assign(CGImageRef);
120    CGImageRef m_imageRef;
121#endif
122};
123
124} // namespace WebKit
125
126#endif
127