/*

    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)

    Copyright (C) 2001 Dirk Mueller <mueller@kde.org>

    Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)

    Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Library General Public

    License as published by the Free Software Foundation; either

    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License

    along with this library; see the file COPYING.LIB.  If not, write to

    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    Boston, MA 02110-1301, USA.

*/

#ifndef CachedImage_h

#define CachedImage_h

#include "CachedResource.h"

#include "ImageObserver.h"

#include "IntRect.h"

#include <wtf/Vector.h>

namespace WebCore {

class DocLoader;

class Cache;

class Image;

class CachedImage : public CachedResource, public ImageObserver {

    friend class Cache;

public:

    CachedImage(Image*);

    virtual ~CachedImage();

    Image* image() const;

    bool canRender() const { return !errorOccurred() && imageSize().width() > 0 && imageSize().height() > 0; }

    IntSize imageSize() const;  // returns the size of the complete image

    IntRect imageRect() const;  // The size of the image.

    virtual void ref(CachedResourceClient*);

    virtual void allReferencesRemoved();

    virtual void destroyDecodedData();

    virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);

    virtual void error();

    virtual bool schedule() const { return true; }

    void checkNotify();

    virtual bool isImage() const { return true; }

    void clear();

    bool stillNeedsLoad() const { return !m_errorOccurred && m_status == Unknown && m_loading == false; }

    void load();

#if PLATFORM(SYMBIAN)

    void decoderError(int);

    void partialImage();

    void imageReady(int);

    void animationFrameReady(int);

    void setMimeType(const String&);

#endif

    // ImageObserver

    virtual void decodedSizeChanged(const Image* image, int delta);

    virtual void didDraw(const Image*);

    virtual bool shouldPauseAnimation(const Image*);

    virtual void animationAdvanced(const Image*);

private:

    void createImage();

    void notifyObservers();

    Image* m_image;

};

}

#endif