nevrax.org : docs

00001 
00007 /* Copyright, 2000 Nevrax Ltd.
00008  *
00009  * This file is part of NEVRAX NEL.
00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2, or (at your option)
00013  * any later version.
00014 
00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018  * General Public License for more details.
00019 
00020  * You should have received a copy of the GNU General Public License
00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
00023  * MA 02111-1307, USA.
00024  */
00025 
00026 #ifndef NL_EVENT_LISTENER_H
00027 #define NL_EVENT_LISTENER_H
00028 
00029 #include "nel/misc/types_nl.h"
00030 #include "nel/misc/events.h"
00031 #include "nel/misc/bit_set.h"
00032 
00033 
00034 namespace NLMISC {
00035 
00036 class CEvent;
00037 class CEventServer;
00038 
00045 class IEventListener
00046 {
00047 public:
00048 
00050         IEventListener();
00051 
00056         virtual void operator ()(const CEvent& event)=0;
00057 };
00058 
00059 
00066 class CEventListenerAsync: public IEventListener
00067 {
00068 public:
00069 
00071         CEventListenerAsync();
00072         virtual ~CEventListenerAsync() {}
00073 
00077         void addToServer (CEventServer& server);
00078 
00082         void removeFromServer (CEventServer& server);
00083 
00088         bool isKeyDown(TKey key) const;
00089 
00097         bool isKeyPushed (TKey key, bool release=true);
00098 
00099 
00109         void reset ();
00110 
00111 
00112 protected:
00113         /*
00114          * Call back of the listener.
00115          * \param event is the event send to the listener
00116          */
00117         virtual void operator ()(const CEvent& event);
00118         CBitSet _KeyArray;
00119         // Must have 2 arrays because of key repetition...
00120         CBitSet _KeyDownArray, _KeyReleaseArray;
00121 };
00122 
00123 
00124 } // NLMISC
00125 
00126 
00127 #endif // NL_EVENT_LISTENER_H
00128 
00129 /* End of event_listener.h */
00130