1/*
2 * Copyright (C) 2010 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
32#ifndef ImageLayerChromium_h
33#define ImageLayerChromium_h
34
35#if USE(ACCELERATED_COMPOSITING)
36
37#include "ContentLayerChromium.h"
38#include "PlatformImage.h"
39
40#if USE(CG)
41#include <wtf/RetainPtr.h>
42#endif
43
44namespace WebCore {
45
46class Image;
47
48// A Layer that contains only an Image element.
49class ImageLayerChromium : public ContentLayerChromium {
50public:
51    static PassRefPtr<ImageLayerChromium> create(GraphicsLayerChromium* owner = 0);
52
53    virtual void paintContentsIfDirty(const IntRect& targetSurfaceRect);
54    virtual void updateCompositorResources();
55    virtual bool drawsContent() const { return m_contents; }
56
57    void setContents(Image* image);
58
59protected:
60    virtual const char* layerTypeAsString() const { return "ImageLayer"; }
61
62    virtual TransformationMatrix tilingTransform();
63    virtual IntRect layerBounds() const;
64
65private:
66    ImageLayerChromium(GraphicsLayerChromium* owner);
67
68    PlatformImage m_decodedImage;
69    NativeImagePtr m_imageForCurrentFrame;
70    RefPtr<Image> m_contents;
71};
72
73}
74#endif // USE(ACCELERATED_COMPOSITING)
75
76#endif
77