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Diffstat (limited to 'experimental/tqtinterface/qt4/src/kernel/tqasyncio.h')
-rw-r--r-- | experimental/tqtinterface/qt4/src/kernel/tqasyncio.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/experimental/tqtinterface/qt4/src/kernel/tqasyncio.h b/experimental/tqtinterface/qt4/src/kernel/tqasyncio.h new file mode 100644 index 000000000..76176a50a --- /dev/null +++ b/experimental/tqtinterface/qt4/src/kernel/tqasyncio.h @@ -0,0 +1,121 @@ +/**************************************************************************** +** +** Definition of asynchronous I/O classes +** +** Created : 970617 +** +** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA. +** +** 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 TQT_H +#include "tqobject.h" +#include "tqsignal.h" +#include "tqtimer.h" +#endif // TQT_H + +#ifndef TQT_NO_ASYNC_IO + +class TQIODevice; + +class TQ_EXPORT TQAsyncIO { +public: + virtual ~TQAsyncIO(); + void connect(TQObject*, const char *member); + +protected: + void ready(); + +private: + TQSignal signal; +}; + +class TQ_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 TQ_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 TQ_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 TQ_EXPORT TQDataPump : public TQObject { + Q_OBJECT + TQ_OBJECT + int interval; + TQTimer timer; + TQDataSource* source; + TQDataSink* sink; + +public: + TQDataPump(TQDataSource*, TQDataSink*); + +private Q_SLOTS: + void kickStart(); + void tryToPump(); +}; + +#endif // TQT_NO_ASYNC_IO + +#endif |