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      1 /*
      2  * Copyright (C) 2006 Eric Seidel <eric (at) 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 "core/platform/graphics/Image.h"
     31 
     32 namespace WebCore {
     33 
     34 class FrameView;
     35 class ImageBuffer;
     36 class Page;
     37 class RenderBox;
     38 class SVGImageChromeClient;
     39 class SVGImageForContainer;
     40 
     41 class SVGImage : public Image {
     42 public:
     43     static PassRefPtr<SVGImage> create(ImageObserver* observer)
     44     {
     45         return adoptRef(new SVGImage(observer));
     46     }
     47 
     48     RenderBox* embeddedContentBox() const;
     49     FrameView* frameView() const;
     50 
     51     virtual bool isSVGImage() const OVERRIDE { return true; }
     52     virtual IntSize size() const OVERRIDE { return m_intrinsicSize; }
     53 
     54     virtual bool hasRelativeWidth() const OVERRIDE;
     55     virtual bool hasRelativeHeight() const OVERRIDE;
     56 
     57     virtual void startAnimation(bool /*catchUpIfNecessary*/ = true) OVERRIDE;
     58     virtual void stopAnimation() OVERRIDE;
     59     virtual void resetAnimation() OVERRIDE;
     60 
     61     virtual PassRefPtr<NativeImageSkia> nativeImageForCurrentFrame() OVERRIDE;
     62 
     63 private:
     64     friend class SVGImageChromeClient;
     65     friend class SVGImageForContainer;
     66 
     67     virtual ~SVGImage();
     68 
     69     virtual String filenameExtension() const OVERRIDE;
     70 
     71     virtual void setContainerSize(const IntSize&) OVERRIDE;
     72     IntSize containerSize() const;
     73     virtual bool usesContainerSize() const OVERRIDE { return true; }
     74     virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) OVERRIDE;
     75 
     76     virtual bool dataChanged(bool allDataReceived) OVERRIDE;
     77 
     78     // FIXME: SVGImages are underreporting decoded sizes and will be unable
     79     // to prune because these functions are not implemented yet.
     80     virtual void destroyDecodedData(bool) OVERRIDE { }
     81     virtual unsigned decodedSize() const OVERRIDE { return 0; }
     82 
     83     // FIXME: Implement this to be less conservative.
     84     virtual bool currentFrameKnownToBeOpaque() OVERRIDE { return false; }
     85 
     86     SVGImage(ImageObserver*);
     87     virtual void draw(GraphicsContext*, const FloatRect& fromRect, const FloatRect& toRect, CompositeOperator, BlendMode) OVERRIDE;
     88     void drawForContainer(GraphicsContext*, const FloatSize, float, const FloatRect&, const FloatRect&, CompositeOperator, BlendMode);
     89     void drawPatternForContainer(GraphicsContext*, const FloatSize, float, const FloatRect&, const FloatSize&, const FloatPoint&,
     90         CompositeOperator, const FloatRect&, BlendMode);
     91 
     92     OwnPtr<SVGImageChromeClient> m_chromeClient;
     93     OwnPtr<Page> m_page;
     94     IntSize m_intrinsicSize;
     95 };
     96 }
     97 
     98 #endif // SVGImage_h
     99