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# csutil/timer.h

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    00001 /*
    00002     Copyright (C) 2003 by Jorrit Tyberghein
    00003
    00004     This library is free software; you can redistribute it and/or
    00005     modify it under the terms of the GNU Library General Public
    00006     License as published by the Free Software Foundation; either
    00007     version 2 of the License, or (at your option) any later version.
    00008
    00009     This library is distributed in the hope that it will be useful,
    00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012     Library General Public License for more details.
    00013
    00014     You should have received a copy of the GNU Library General Public
    00015     License along with this library; if not, write to the Free
    00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00017 */
    00018
    00019 #ifndef __CS_TIMER_H__
    00020 #define __CS_TIMER_H__
    00021
    00026 #include <stdarg.h>
    00027 #include <stdio.h>
    00028 #include "csextern.h"
    00029 #include "csutil/array.h"
    00030 #include "csutil/scf_implementation.h"
    00031 #include "iutil/timer.h"
    00032 #include "iutil/eventnames.h"
    00033
    00034 struct iEvent;
    00035 struct iObjectRegistry;
    00036 struct iVirtualClock;
    00037 struct iEventHandler;
    00038 struct timerevent;
    00039
    00044 class CS_CRYSTALSPACE_EXPORT csEventTimer :
    00045   public scfImplementation1<csEventTimer, iEventTimer>
    00046 {
    00047 private:
    00048   iObjectRegistry* object_reg;
    00049   csEventID FinalProcess;
    00050   csArray<timerevent> timerevents;
    00051   iEventHandler* handler;
    00052   csRef<iVirtualClock> vc;
    00053
    00054   size_t FindTimerEvent (iTimerEvent* ev);
    00055
    00056   // Optimization: to prevent having to loop over all timer events
    00057   // all the time we keep the minimum time needed before the first
    00058   // event is triggered.
    00059   int32 minimum_time;
    00060   int32 accumulate_elapsed;
    00061
    00062 public:
    00063   csEventTimer (iObjectRegistry* object_reg);
    00064   virtual ~csEventTimer ();
    00065
    00066   bool HandleEvent (iEvent& e);
    00067
    00068   virtual void AddTimerEvent (iTimerEvent* ev, csTicks delay);
    00069   virtual void RemoveTimerEvent (iTimerEvent* ev);
    00070   virtual void RemoveAllTimerEvents ();
    00071
    00072   virtual size_t GetEventCount () const { return timerevents.Length (); }
    00073   virtual csTicks GetTimeLeft (size_t idx) const;
    00074
    00080   static csPtr<iEventTimer> GetStandardTimer (iObjectRegistry* object_reg);
    00081 };
    00082
    00083 #endif // __CS_TIMER_H__
    00084