/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 *
 * Date        : 2005-11-01
 * Description : a PNG image loader for DImg framework.
 *
 * Copyright (C) 2005-2014 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program 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 General Public License for more details.
 *
 * ============================================================ */

#ifndef PNGLOADER_H
#define PNGLOADER_H

// C++ includes

#include <cstdarg>

// libPNG includes

extern "C"
{
#include <png.h>
}

// Local includes

#include "dimgloader.h"
#include "digikam_export.h"

namespace Digikam
{
class DImg;

class DIGIKAM_EXPORT PNGLoader : public DImgLoader
{
public:

    explicit PNGLoader(DImg* const image);

    bool load(const QString& filePath, DImgLoaderObserver* const observer);
    bool save(const QString& filePath, DImgLoaderObserver* const observer);

    virtual bool hasAlpha()   const;
    virtual bool sixteenBit() const;
    virtual bool isReadOnly() const;

private:

    bool m_sixteenBit;
    bool m_hasAlpha;
};

}  // namespace Digikam

#endif /* PNGLOADER_H */
