/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the plugins of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

** WARNING:

**      A separate license from Unisys may be required to use the gif

**      reader. See http://www.unisys.com/about__unisys/lzw/

**      for information from Unisys

**

****************************************************************************/

#ifndef QGIFHANDLER_H

#define QGIFHANDLER_H

#include <QtGui/qimageiohandler.h>

#include <QtGui/qimage.h>

#include <QtCore/qbytearray.h>

QT_BEGIN_NAMESPACE

class QGIFFormat;

class QGifHandler : public QImageIOHandler

{

public:

    QGifHandler();

    ~QGifHandler();

    bool canRead() const;

    bool read(QImage *image);

    bool write(const QImage &image);

    QByteArray name() const;

    static bool canRead(QIODevice *device);

    QVariant option(ImageOption option) const;

    void setOption(ImageOption option, const QVariant &value);

    bool supportsOption(ImageOption option) const;

    int imageCount() const;

    int loopCount() const;

    int nextImageDelay() const;

    int currentImageNumber() const;

private:

    bool imageIsComing() const;

    QGIFFormat *gifFormat;

    QString fileName;

    mutable QByteArray buffer;

    mutable QImage lastImage;

    mutable int nextDelay;

    mutable int loopCnt;

    int frameNumber;

    mutable QSize nextSize;

};

QT_END_NAMESPACE

#endif // QGIFHANDLER_H