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Qt Toolkit - qpngio.h include file
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<h1 align=center>qpngio.h</h1><br clear="all">
This is the verbatim text of the qpngio.h include file. It is
provided only for illustration; the copyright
remains with Trolltech.
<hr>
<pre>
/****************************************************************************
** $Id: qt/src/kernel/qpngio.h 2.3.2 edited 2001-01-26 $
**
** Definition of PNG QImage IOHandler
**
** Created : 970521
**
** Copyright (C) 1992-1998 Trolltech AS. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QPNGIO_H
#define QPNGIO_H
#ifndef QT_H
#include <qimage.h>
#endif // QT_H
#ifndef QT_NO_IMAGEIO_PNG
void qInitPngIO();
class <a href="qiodevice.html">QIODevice</a>;
class <a href="qimage.html">QImage</a>;
class Q_EXPORT QPNGImageWriter {
public:
QPNGImageWriter(QIODevice*);
~QPNGImageWriter();
enum DisposalMethod { Unspecified, NoDisposal, RestoreBackground, RestoreImage };
void setDisposalMethod(DisposalMethod);
void setLooping(int loops=0); // 0 == infinity
void setFrameDelay(int msecs);
bool writeImage(const QImage& img, int x, int y);
bool writeImage(const QImage& img, int quality, int x, int y);
bool writeImage(const QImage& img)
{ return writeImage(img, 0, 0); }
bool writeImage(const QImage& img, int quality)
{ return writeImage(img, quality, 0, 0); }
QIODevice* device() { return dev; }
private:
QIODevice* dev;
int frames_written;
DisposalMethod disposal;
int looping;
int ms_delay;
};
class Q_EXPORT <a href="qpngimagepacker.html">QPNGImagePacker</a> : public QPNGImageWriter {
public:
QPNGImagePacker(QIODevice*, int depth, int convflags);
void setPixelAlignment(int x);
bool packImage(const QImage& img);
private:
QImage previous;
int depth;
int convflags;
int alignx;
};
#endif // QT_NO_IMAGEIO_PNG
#endif // QPNGIO_H
</pre>
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<td>Copyright 2001 Trolltech<td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align="right"><div align="right">Qt version 2.3.2</div>
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