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#include "WebVector.h"
36
37#include "third_party/skia/include/core/SkBitmap.h"
38
39#if INSIDE_BLINK
40namespace WTF { template <typename T> class PassRefPtr; }
41#endif
42
43namespace blink {
44
45class Image;
46class WebData;
47struct WebSize;
48
49// A container for an ARGB bitmap.
50class WebImage {
51public:
52    ~WebImage() { reset(); }
53
54    WebImage() { init(); }
55    WebImage(const WebImage& image)
56    {
57        init();
58        assign(image);
59    }
60
61    WebImage& operator=(const WebImage& image)
62    {
63        assign(image);
64        return *this;
65    }
66
67    // Decodes the given image data. If the image has multiple frames,
68    // then the frame whose size is desiredSize is returned. Otherwise,
69    // the first frame is returned.
70    BLINK_PLATFORM_EXPORT static WebImage fromData(const WebData&, const WebSize& desiredSize);
71
72    // Returns a list of all frames in the image. Only the first frame at each pixel
73    // size will be returned.
74    BLINK_PLATFORM_EXPORT static WebVector<WebImage> framesFromData(const WebData&);
75
76    BLINK_PLATFORM_EXPORT void reset();
77    BLINK_PLATFORM_EXPORT void assign(const WebImage&);
78
79    BLINK_PLATFORM_EXPORT bool isNull() const;
80    BLINK_PLATFORM_EXPORT WebSize size() const;
81
82#if INSIDE_BLINK
83    BLINK_PLATFORM_EXPORT WebImage(const WTF::PassRefPtr<Image>&);
84    BLINK_PLATFORM_EXPORT WebImage& operator=(const WTF::PassRefPtr<Image>&);
85#endif
86
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
103} // namespace blink
104
105#endif
106