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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 #include "config.h" | |
32 #include "WebImage.h" | |
33 | |
34 #include "Image.h" | |
35 #include "ImageSource.h" | |
36 #include "SharedBuffer.h" | |
37 | |
38 #include "WebData.h" | |
39 #include "WebSize.h" | |
40 | |
41 #include <CoreGraphics/CGImage.h> | |
42 | |
43 #include <wtf/PassRefPtr.h> | |
44 #include <wtf/RetainPtr.h> | |
45 | |
46 using namespace WebCore; | |
47 | |
48 namespace WebKit { | |
49 | |
50 WebImage WebImage::fromData(const WebData& data, const WebSize& desiredSize) | |
51 { | |
52 // FIXME: Do something like what WebImageSkia.cpp does to enumerate frames. | |
53 // Not sure whether the CG decoder uses the same frame ordering rules (if so | |
54 // we can just use the same logic). | |
55 | |
56 ImageSource source; | |
57 source.setData(PassRefPtr<SharedBuffer>(data).get(), true); | |
58 if (!source.isSizeAvailable()) | |
59 return WebImage(); | |
60 | |
61 RetainPtr<CGImageRef> frame0(AdoptCF, source.createFrameAtIndex(0)); | |
62 if (!frame0) | |
63 return WebImage(); | |
64 | |
65 return WebImage(frame0.get()); | |
66 } | |
67 | |
68 void WebImage::reset() | |
69 { | |
70 CGImageRelease(m_imageRef); | |
71 m_imageRef = 0; | |
72 } | |
73 | |
74 void WebImage::assign(const WebImage& image) | |
75 { | |
76 assign(image.m_imageRef); | |
77 } | |
78 | |
79 bool WebImage::isNull() const | |
80 { | |
81 return !m_imageRef; | |
82 } | |
83 | |
84 WebSize WebImage::size() const | |
85 { | |
86 return WebSize(CGImageGetWidth(m_imageRef), CGImageGetHeight(m_imageRef)); | |
87 } | |
88 | |
89 WebImage::WebImage(const PassRefPtr<Image>& image) | |
90 : m_imageRef(0) | |
91 { | |
92 if (image.get()) | |
93 assign(image->nativeImageForCurrentFrame()); | |
94 } | |
95 | |
96 WebImage& WebImage::operator=(const PassRefPtr<Image>& image) | |
97 { | |
98 if (image.get()) | |
99 assign(image->nativeImageForCurrentFrame()); | |
100 else | |
101 reset(); | |
102 return *this; | |
103 } | |
104 | |
105 void WebImage::assign(CGImageRef imageRef) | |
106 { | |
107 // Make sure to retain the imageRef first incase m_imageRef == imageRef. | |
108 CGImageRetain(imageRef); | |
109 CGImageRelease(m_imageRef); | |
110 m_imageRef = imageRef; | |
111 } | |
112 | |
113 } // namespace WebKit | |
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