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108 lines
3.1 KiB
108 lines
3.1 KiB
14 years ago
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/****************************************************************************
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**
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** Definition of PNG QImage IOHandler
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**
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** Created : 970521
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of the kernel module of the Qt GUI Toolkit.
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**
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** This file may be used under the terms of the GNU General
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** Public License versions 2.0 or 3.0 as published by the Free
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** Software Foundation and appearing in the files LICENSE.GPL2
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** and LICENSE.GPL3 included in the packaging of this file.
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** Alternatively you may (at your option) use any later version
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** of the GNU General Public License if such license has been
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** publicly approved by Trolltech ASA (or its successors, if any)
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** and the KDE Free Qt Foundation.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** This file may be used under the terms of the Q Public License as
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** defined by Trolltech ASA and appearing in the file LICENSE.QPL
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** included in the packaging of this file. Licensees holding valid Qt
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** Commercial licenses may use this file in accordance with the Qt
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** Commercial License Agreement provided with the Software.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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** herein.
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**
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**********************************************************************/
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#ifndef QPNGIO_H
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#define QPNGIO_H
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#ifndef QT_H
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#include "qimage.h"
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#endif // QT_H
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#ifndef QT_NO_IMAGEIO_PNG
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void qInitPngIO();
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class QIODevice;
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#ifndef Q_PNGEXPORT
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#if !defined(QT_PLUGIN)
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#define Q_PNGEXPORT Q_EXPORT
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#else
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#define Q_PNGEXPORT
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#endif
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#endif
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class Q_PNGEXPORT QPNGImageWriter {
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public:
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QPNGImageWriter(QIODevice*);
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~QPNGImageWriter();
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enum DisposalMethod { Unspecified, NoDisposal, RestoreBackground, RestoreImage };
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void setDisposalMethod(DisposalMethod);
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void setLooping(int loops=0); // 0 == infinity
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void setFrameDelay(int msecs);
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void setGamma(float);
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bool writeImage(const QImage& img, int x, int y);
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bool writeImage(const QImage& img, int quality, int x, int y);
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bool writeImage(const QImage& img)
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{ return writeImage(img, 0, 0); }
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bool writeImage(const QImage& img, int quality)
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{ return writeImage(img, quality, 0, 0); }
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QIODevice* device() { return dev; }
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private:
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QIODevice* dev;
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int frames_written;
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DisposalMethod disposal;
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int looping;
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int ms_delay;
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float gamma;
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};
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class Q_PNGEXPORT QPNGImagePacker : public QPNGImageWriter {
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public:
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QPNGImagePacker(QIODevice*, int depth, int convflags);
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void setPixelAlignment(int x);
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bool packImage(const QImage& img);
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private:
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QImage previous;
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int depth;
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int convflags;
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int alignx;
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};
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#endif // QT_NO_IMAGEIO_PNG
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#endif // QPNGIO_H
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