/*

 * Copyright (C) 2009 Google Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following disclaimer

 * in the documentation and/or other materials provided with the

 * distribution.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef WebImage_h

#define WebImage_h

#include "WebCommon.h"

#if WEBKIT_USING_SKIA

#include <SkBitmap.h>

#elif WEBKIT_USING_CG

typedef struct CGImage* CGImageRef;

#endif

#if WEBKIT_IMPLEMENTATION

namespace WebCore { class Image; }

namespace WTF { template <typename T> class PassRefPtr; }

#endif

namespace WebKit {

class WebData;

struct WebSize;

// A container for an ARGB bitmap.

class WebImage {

public:

    ~WebImage() { reset(); }

    WebImage() { init(); }

    WebImage(const WebImage& image)

    {

        init();

        assign(image);

    }

    WebImage& operator=(const WebImage& image)

    {

        assign(image);

        return *this;

    }

    // Decodes the given image data.  If the image has multiple frames,

    // then the frame whose size is desiredSize is returned.  Otherwise,

    // the first frame is returned.

    WEBKIT_API static WebImage fromData(const WebData&, const WebSize& desiredSize);

    WEBKIT_API void reset();

    WEBKIT_API void assign(const WebImage&);

    WEBKIT_API bool isNull() const;

    WEBKIT_API WebSize size() const;

#if WEBKIT_IMPLEMENTATION

    WebImage(const WTF::PassRefPtr<WebCore::Image>&);

    WebImage& operator=(const WTF::PassRefPtr<WebCore::Image>&);

#endif

#if WEBKIT_USING_SKIA

    WebImage(const SkBitmap& bitmap) : m_bitmap(bitmap) { }

    WebImage& operator=(const SkBitmap& bitmap)

    {

        m_bitmap = bitmap;

        return *this;

    }

    SkBitmap& getSkBitmap() { return m_bitmap; }

    const SkBitmap& getSkBitmap() const { return m_bitmap; }

private:

    void init() { }

    SkBitmap m_bitmap;

#elif WEBKIT_USING_CG

    WebImage(CGImageRef imageRef)

    {

        init();

        assign(imageRef);

    }

    WebImage& operator=(CGImageRef imageRef)

    {

        assign(imageRef);

        return *this;

    }

    CGImageRef getCGImageRef() const { return m_imageRef; }

private:

    void init() { m_imageRef = 0; }

    void assign(CGImageRef);

    CGImageRef m_imageRef;

#endif

};

} // namespace WebKit

#endif