1/*
2 * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
3 * Copyright (C) 2009 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef SVGImage_h
28#define SVGImage_h
29
30#include "platform/graphics/Image.h"
31#include "platform/heap/Handle.h"
32#include "platform/weborigin/KURL.h"
33
34namespace WebCore {
35
36class FrameView;
37class Page;
38class RenderBox;
39class SVGImageChromeClient;
40class SVGImageForContainer;
41
42class SVGImage FINAL : public Image {
43public:
44    static PassRefPtr<SVGImage> create(ImageObserver* observer)
45    {
46        return adoptRef(new SVGImage(observer));
47    }
48
49    static bool isInSVGImage(const Node*);
50
51    RenderBox* embeddedContentBox() const;
52
53    virtual bool isSVGImage() const OVERRIDE { return true; }
54    virtual IntSize size() const OVERRIDE { return m_intrinsicSize; }
55    void setURL(const KURL& url) { m_url = url; }
56
57    virtual bool currentFrameHasSingleSecurityOrigin() const OVERRIDE;
58
59    virtual void startAnimation(CatchUpAnimation = CatchUp) OVERRIDE;
60    virtual void stopAnimation() OVERRIDE;
61    virtual void resetAnimation() OVERRIDE;
62
63    virtual PassRefPtr<NativeImageSkia> nativeImageForCurrentFrame() OVERRIDE;
64
65    // Returns the SVG image document's frame.
66    FrameView* frameView() const;
67
68    // Does the SVG image/document contain any animations?
69    bool hasAnimations() const;
70
71private:
72    friend class AXRenderObject;
73    friend class SVGImageChromeClient;
74    friend class SVGImageForContainer;
75
76    virtual ~SVGImage();
77
78
79    virtual String filenameExtension() const OVERRIDE;
80
81    virtual void setContainerSize(const IntSize&) OVERRIDE;
82    IntSize containerSize() const;
83    virtual bool usesContainerSize() const OVERRIDE { return true; }
84    virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) OVERRIDE;
85
86    virtual bool dataChanged(bool allDataReceived) OVERRIDE;
87
88    // FIXME: SVGImages are underreporting decoded sizes and will be unable
89    // to prune because these functions are not implemented yet.
90    virtual void destroyDecodedData(bool) OVERRIDE { }
91
92    // FIXME: Implement this to be less conservative.
93    virtual bool currentFrameKnownToBeOpaque() OVERRIDE { return false; }
94
95    SVGImage(ImageObserver*);
96    virtual void draw(GraphicsContext*, const FloatRect& fromRect, const FloatRect& toRect, CompositeOperator, blink::WebBlendMode) OVERRIDE;
97    void drawForContainer(GraphicsContext*, const FloatSize, float, const FloatRect&, const FloatRect&, CompositeOperator, blink::WebBlendMode);
98    void drawPatternForContainer(GraphicsContext*, const FloatSize, float, const FloatRect&, const FloatSize&, const FloatPoint&,
99        CompositeOperator, const FloatRect&, blink::WebBlendMode, const IntSize& repeatSpacing);
100
101    OwnPtr<SVGImageChromeClient> m_chromeClient;
102    OwnPtrWillBePersistent<Page> m_page;
103    IntSize m_intrinsicSize;
104    KURL m_url;
105};
106
107DEFINE_IMAGE_TYPE_CASTS(SVGImage);
108
109class ImageObserverDisabler {
110    WTF_MAKE_NONCOPYABLE(ImageObserverDisabler);
111public:
112    ImageObserverDisabler(Image* image)
113        : m_image(image)
114    {
115        ASSERT(m_image->imageObserver());
116        m_observer = m_image->imageObserver();
117        m_image->setImageObserver(0);
118    }
119
120    ~ImageObserverDisabler()
121    {
122        m_image->setImageObserver(m_observer);
123    }
124private:
125    Image* m_image;
126    ImageObserver* m_observer;
127};
128
129}
130
131#endif // SVGImage_h
132