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This is the verbatim text of the qasyncio.h include file. It is provided only for illustration; the copyright remains with Trolltech.
/**************************************************************************** ** $Id: qt/qasyncio.h 3.2.0b2 edited May 13 09:08 $ ** ** Definition of asynchronous I/O classes ** ** Created : 970617 ** ** Copyright (C) 1992-2000 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 [email protected] 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 [email protected] if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ #ifndef QASYNCIO_H #define QASYNCIO_H #ifndef QT_H #include "qobject.h" #include "qsignal.h" #include "qtimer.h" #endif // QT_H #ifndef QT_NO_ASYNC_IO class QIODevice; class Q_EXPORT QAsyncIO { public: virtual ~QAsyncIO(); void connect(QObject*, const char *member); protected: void ready(); private: QSignal signal; }; class Q_EXPORT QDataSink : public QAsyncIO { public: // Call this to know how much I can take. virtual int readyToReceive()=0; virtual void receive(const uchar*, int count)=0; virtual void eof()=0; void maybeReady(); }; class Q_EXPORT QDataSource : public QAsyncIO { public: virtual int readyToSend()=0; // returns -1 when never any more ready virtual void sendTo(QDataSink*, int count)=0; void maybeReady(); virtual bool rewindable() const; virtual void enableRewind(bool); virtual void rewind(); }; class Q_EXPORT QIODeviceSource : public QDataSource { const int buf_size; uchar *buffer; QIODevice* iod; bool rew; public: QIODeviceSource(QIODevice*, int bufsize=4096); ~QIODeviceSource(); int readyToSend(); void sendTo(QDataSink* sink, int n); bool rewindable() const; void enableRewind(bool on); void rewind(); }; class Q_EXPORT QDataPump : public QObject { Q_OBJECT int interval; QTimer timer; QDataSource* source; QDataSink* sink; public: QDataPump(QDataSource*, QDataSink*); private slots: void kickStart(); void tryToPump(); }; #endif // QT_NO_ASYNC_IO #endif
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