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src/qsa/src/engine/qstimeouttrigger.h
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00001 /****************************************************************************
00002 ** $Id: qstimeouttrigger.h  1.1.5   edited 2006-02-23T15:39:57$
00003 **
00004 ** Copyright (C) 2001-2006 Trolltech AS.  All rights reserved.
00005 **
00006 ** This file is part of the Qt Script for Applications framework (QSA).
00007 **
00008 ** This file may be distributed and/or modified under the terms of the
00009 ** GNU General Public License version 2 as published by the Free Software
00010 ** Foundation and appearing in the file LICENSE.GPL included in the
00011 ** packaging of this file.
00012 **
00013 ** Licensees holding a valid Qt Script for Applications license may use
00014 ** this file in accordance with the Qt Script for Applications License
00015 ** Agreement provided with the Software.
00016 **
00017 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00018 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00019 **
00020 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
00021 **   information about QSA Commercial License Agreements.
00022 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
00023 **
00024 ** Contact info@trolltech.com if any conditions of this licensing are
00025 ** not clear to you.
00026 **
00027 *****************************************************************************/
00028 
00029 #ifndef QSTIMEOUTTRIGGER_H
00030 #define QSTIMEOUTTRIGGER_H
00031 
00032 #include <qobject.h>
00033 #include <qdatetime.h>
00034 
00035 class QSTimeoutTrigger : public QObject
00036 {
00037   Q_OBJECT
00038 public:
00039   QSTimeoutTrigger() : QObject() { }
00040   inline void start() {
00041     time.start();
00042     lastTimeout = 0;
00043   }
00044   inline void fireTimeout() {
00045     if (time.elapsed() - lastTimeout >= ival) {
00046       lastTimeout = time.elapsed();
00047       emit timeout(lastTimeout);
00048     }
00049   }
00050 
00051   void setInterval(int i) {
00052     ival = i;
00053   }
00054   int interval() const {
00055     return ival;
00056   }
00057 
00058 signals:
00059   void timeout(int runningTime);
00060 
00061 private:
00062   QTime time;
00063   int lastTimeout;
00064   int ival;
00065 };
00066 
00067 #endif // QSTIMEOUTTRIGGER_H
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