timer.h

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00001 /*
00002   libwt - Vassilis Virvilis Toolkit - a widget library
00003   Copyright (C) 2006 Vassilis Virvilis <vasvir2@fastmail.fm>
00004  
00005   This library is free software; you can redistribute it and/or
00006   modify it under the terms of the GNU Lesser General Public
00007   License as published by the Free Software Foundation; either
00008   version 2.1 of the License, or (at your option) any later version.
00009   
00010   This library is distributed in the hope that it will be useful,
00011   but WITHOUT ANY WARRANTY; without even the implied warranty of
00012   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013   Lesser General Public License for more details.
00014   
00015   You should have received a copy of the GNU Lesser General Public
00016   License along with this library; if not, write to the
00017   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00018   Boston, MA  02111-1307, SA.
00019 */
00020 
00021 #ifndef WT_TIMER_H
00022 #define WT_TIMER_H
00023 
00024 #include <wt/object.h>
00025 
00026 namespace Wt {
00027 
00028 /// Timer handles known events that must happen (fairly) regularly
00029 class Timer : public Object {
00030 public:
00031     /// Create a timer
00032     Timer(Object *parent = 0, const std::string &name = "Timer::anon");
00033 
00034     bool isActive() const {
00035         return timerid_;
00036     }
00037 
00038     int start(int msec, bool sshot = false);
00039     void changeInterval(int msec);
00040     void stop();
00041 
00042     int timerId() const {
00043         return timerid_;
00044     }
00045 
00046     /// Emitted when the timer is triggered
00047     sigc::signal<void> timeout;
00048 
00049 private:
00050     ///
00051     int timerid_;
00052     bool sshot_;
00053     int delivered_;
00054 
00055 private:
00056     virtual void timerEvent(TimerEvent *e);
00057 };
00058 
00059 } // WT_TIMER_H
00060 
00061 #endif

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