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| 2 | <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/include/qasyncio.h:1 -->
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| 3 | <html>
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| 6 | <title>qasyncio.h Include File</title>
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| 19 | <a href="index.html">
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| 20 | <font color="#004faf">Home</font></a>
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| 21 | | <a href="classes.html">
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| 22 | <font color="#004faf">All Classes</font></a>
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| 23 | | <a href="mainclasses.html">
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| 24 | <font color="#004faf">Main Classes</font></a>
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| 26 | <font color="#004faf">Annotated</font></a>
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| 28 | <font color="#004faf">Grouped Classes</font></a>
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| 29 | | <a href="functions.html">
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| 30 | <font color="#004faf">Functions</font></a>
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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qasyncio.h</h1>
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| 33 |
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| 34 | <p>This is the verbatim text of the qasyncio.h include file. It is provided only for illustration; the copyright remains with Trolltech.
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| 35 | <hr>
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| 36 | <pre>
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| 37 | /****************************************************************************
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| 38 | ** $Id: qasyncio-h.html 2051 2007-02-21 10:04:20Z chehrlic $
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| 39 | **
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| 40 | ** Definition of asynchronous I/O classes
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| 41 | **
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| 42 | ** Created : 970617
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| 43 | **
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| 44 | ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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| 45 | **
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| 46 | ** This file is part of the kernel module of the Qt GUI Toolkit.
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| 47 | **
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| 48 | ** This file may be distributed under the terms of the Q Public License
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| 49 | ** as defined by Trolltech ASA of Norway and appearing in the file
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| 50 | ** LICENSE.QPL included in the packaging of this file.
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| 51 | **
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| 52 | ** This file may be distributed and/or modified under the terms of the
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| 53 | ** GNU General Public License version 2 as published by the Free Software
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| 54 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 55 | ** packaging of this file.
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| 56 | **
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| 57 | ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
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| 58 | ** licenses may use this file in accordance with the Qt Commercial License
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| 59 | ** Agreement provided with the Software.
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| 60 | **
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| 61 | ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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| 62 | ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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| 63 | **
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| 64 | ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
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| 65 | ** information about Qt Commercial License Agreements.
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| 66 | ** See http://www.trolltech.com/qpl/ for QPL licensing information.
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| 67 | ** See http://www.trolltech.com/gpl/ for GPL licensing information.
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| 68 | **
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| 69 | ** Contact info@trolltech.com if any conditions of this licensing are
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| 70 | ** not clear to you.
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| 71 | **
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| 72 | **********************************************************************/
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| 73 |
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| 74 | #ifndef QASYNCIO_H
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| 75 | #define QASYNCIO_H
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| 76 |
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| 77 | #ifndef QT_H
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| 78 | #include "qobject.h"
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| 79 | #include "qsignal.h"
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| 80 | #include "qtimer.h"
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| 81 | #endif // QT_H
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| 82 |
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| 83 | #ifndef QT_NO_ASYNC_IO
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| 84 |
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| 85 | class QIODevice;
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| 86 |
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| 87 | class Q_EXPORT QAsyncIO {
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| 88 | public:
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| 89 | virtual ~QAsyncIO();
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| 90 | void connect(QObject*, const char *member);
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| 91 |
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| 92 | protected:
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| 93 | void ready();
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| 94 |
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| 95 | private:
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| 96 | QSignal signal;
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| 97 | };
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| 98 |
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| 99 | class Q_EXPORT QDataSink : public QAsyncIO {
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| 100 | public:
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| 101 | // Call this to know how much I can take.
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| 102 | virtual int readyToReceive()=0;
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| 103 | virtual void receive(const uchar*, int count)=0;
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| 104 | virtual void eof()=0;
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| 105 | void maybeReady();
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| 106 | };
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| 107 |
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| 108 | class Q_EXPORT QDataSource : public QAsyncIO {
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| 109 | public:
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| 110 | virtual int readyToSend()=0; // returns -1 when never any more ready
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| 111 | virtual void sendTo(QDataSink*, int count)=0;
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| 112 | void maybeReady();
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| 113 |
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| 114 | virtual bool rewindable() const;
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| 115 | virtual void enableRewind(bool);
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| 116 | virtual void rewind();
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| 117 | };
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| 118 |
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| 119 | class Q_EXPORT QIODeviceSource : public QDataSource {
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| 120 | const int buf_size;
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| 121 | uchar *buffer;
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| 122 | QIODevice* iod;
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| 123 | bool rew;
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| 124 |
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| 125 | public:
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| 126 | QIODeviceSource(QIODevice*, int bufsize=4096);
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| 127 | ~QIODeviceSource();
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| 128 |
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| 129 | int readyToSend();
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| 130 | void sendTo(QDataSink* sink, int n);
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| 131 | bool rewindable() const;
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| 132 | void enableRewind(bool on);
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| 133 | void rewind();
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| 134 | };
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| 135 |
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| 136 | class Q_EXPORT QDataPump : public QObject {
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| 137 | Q_OBJECT
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| 138 | int interval;
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| 139 | QTimer timer;
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| 140 | QDataSource* source;
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| 141 | QDataSink* sink;
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| 142 |
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| 143 | public:
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| 144 | QDataPump(QDataSource*, QDataSink*);
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| 145 |
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| 146 | private slots:
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| 147 | void kickStart();
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| 148 | void tryToPump();
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| 149 | };
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| 150 |
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| 151 | #endif // QT_NO_ASYNC_IO
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| 152 |
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| 153 | #endif
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| 154 | </pre>
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| 155 | <!-- eof -->
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| 156 | <p><address><hr><div align=center>
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| 157 | <table width=100% cellspacing=0 border=0><tr>
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| 158 | <td>Copyright © 2007
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| 159 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 160 | <td align=right><div align=right>Qt 3.3.8</div>
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| 161 | </table></div></address></body>
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| 162 | </html>
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