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It is provided only for illustration; the copyright remains with Trolltech. +<hr> +<pre> +/**************************************************************************** +** $Id: qt/qasyncio.h 3.3.8 edited Jan 11 14:38 $ +** +** Definition of asynchronous I/O classes +** +** Created : 970617 +** +** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. +** +** This file is part of the kernel module of the TQt GUI Toolkit. +** +** This file may be used under the terms of the GNU General Public +** License versions 2.0 or 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Alternatively you may (at your option) use any +** later version of the GNU General Public License if such license has +** been publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing retquirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.TQPL +** included in the packaging of this file. Licensees holding valid TQt +** Commercial licenses may use this file in accordance with the TQt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#ifndef TQASYNCIO_H +#define TQASYNCIO_H + +#ifndef QT_H +#include "qobject.h" +#include "qsignal.h" +#include "qtimer.h" +#endif // QT_H + +#ifndef QT_NO_ASYNC_IO + +class TQIODevice; + +class Q_EXPORT TQAsyncIO { +public: + virtual ~TQAsyncIO(); + void connect(TQObject*, const char *member); + +protected: + void ready(); + +private: + TQSignal signal; +}; + +class Q_EXPORT TQDataSink : public TQAsyncIO { +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 TQDataSource : public TQAsyncIO { +public: + virtual int readyToSend()=0; // returns -1 when never any more ready + virtual void sendTo(TQDataSink*, int count)=0; + void maybeReady(); + + virtual bool rewindable() const; + virtual void enableRewind(bool); + virtual void rewind(); +}; + +class Q_EXPORT TQIODeviceSource : public TQDataSource { + const int buf_size; + uchar *buffer; + TQIODevice* iod; + bool rew; + +public: + TQIODeviceSource(TQIODevice*, int bufsize=4096); + ~TQIODeviceSource(); + + int readyToSend(); + void sendTo(TQDataSink* sink, int n); + bool rewindable() const; + void enableRewind(bool on); + void rewind(); +}; + +class Q_EXPORT TQDataPump : public TQObject { + Q_OBJECT + int interval; + TQTimer timer; + TQDataSource* source; + TQDataSink* sink; + +public: + TQDataPump(TQDataSource*, TQDataSink*); + +private slots: + void kickStart(); + void tryToPump(); +}; + +#endif // QT_NO_ASYNC_IO + +#endif +</pre> +<!-- eof --> +<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>TQt 3.3.8</div> +</table></div></address></body> +</html> |