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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
** 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_P_H
#define QGIFHANDLER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#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 Q_DECL_OVERRIDE;
bool read(QImage *image) Q_DECL_OVERRIDE;
bool write(const QImage &image) Q_DECL_OVERRIDE;
QByteArray name() const Q_DECL_OVERRIDE;
static bool canRead(QIODevice *device);
QVariant option(ImageOption option) const Q_DECL_OVERRIDE;
void setOption(ImageOption option, const QVariant &value) Q_DECL_OVERRIDE;
bool supportsOption(ImageOption option) const Q_DECL_OVERRIDE;
int imageCount() const Q_DECL_OVERRIDE;
int loopCount() const Q_DECL_OVERRIDE;
int nextImageDelay() const Q_DECL_OVERRIDE;
int currentImageNumber() const Q_DECL_OVERRIDE;
private:
bool imageIsComing() const;
QGIFFormat *gifFormat;
QString fileName;
mutable QByteArray buffer;
mutable QImage lastImage;
mutable int nextDelay;
mutable int loopCnt;
int frameNumber;
mutable QVector<QSize> imageSizes;
mutable bool scanIsCached;
};
QT_END_NAMESPACE
#endif // QGIFHANDLER_P_H
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