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-/****************************************************************************
-**
-** Definition of asynchronous I/O classes
-**
-** Created : 970617
-**
-** Copyright (C) 1992-2008 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 files LICENSE.GPL2
-** and LICENSE.GPL3 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 requirements 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