NeL: event_listener.cpp Source File

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 #include "stdmisc.h"
+00027 
+00028 #include "nel/misc/event_listener.h"
+00029 #include "nel/misc/event_server.h"
+00030 #include "nel/misc/events.h"
+00031 
+00032 
+00033 namespace NLMISC {
+00034 
+00035 
+00036 /*
+00037  * Constructor
+00038  */
+00039 IEventListener::IEventListener()
+00040 {
+00041 }
+00042 
+00043 // ***************************************************************************
+00044 // ***************************************************************************
+00045 // CEventListenerAsync
+00046 // ***************************************************************************
+00047 // ***************************************************************************
+00048 
+00049 // ***************************************************************************
+00050 CEventListenerAsync::CEventListenerAsync()
+00051 {
+00052         _KeyArray.resize (KeyCount);
+00053         _KeyDownArray.resize (KeyCount);
+00054         _KeyReleaseArray.resize (KeyCount);
+00055         reset ();
+00056 }
+00057 // ***************************************************************************
+00058 void CEventListenerAsync::addToServer (CEventServer& server)
+00059 {
+00060         server.addListener (EventKeyDownId, this);
+00061         server.addListener (EventSetFocusId, this);
+00062         server.addListener (EventKeyUpId, this);
+00063 }
+00064 // ***************************************************************************
+00065 void CEventListenerAsync::removeFromServer (CEventServer& server)
+00066 {
+00067         server.removeListener (EventKeyUpId, this);
+00068         server.removeListener (EventKeyDownId, this);
+00069         server.removeListener (EventSetFocusId, this);
+00070 }
+00071 // ***************************************************************************
+00072 bool CEventListenerAsync::isKeyDown (TKey key) const
+00073 {
+00074         return _KeyArray.get(key);
+00075 }
+00076 
+00077 // ***************************************************************************
+00078 bool CEventListenerAsync::isKeyPushed (TKey key, bool release)
+00079 {
+00080         bool    ret= _KeyDownArray.get(key) && !(_KeyReleaseArray.get(key));
+00081         if(ret && release)
+00082         {
+00083                 _KeyReleaseArray.set(key, true);
+00084         }
+00085         return ret;
+00086 }
+00087 
+00088 // ***************************************************************************
+00089 void CEventListenerAsync::operator ()(const CEvent& event)
+00090 {
+00091         // Key down ?
+00092         if (event==EventKeyDownId)
+00093         {
+00094                 CEventKeyDown *pEvent=(CEventKeyDown*)&event;
+00095                 _KeyArray.set (pEvent->Key);
+00096                 _KeyDownArray.set (pEvent->Key);
+00097                 switch(pEvent->Key)
+00098                 {
+00099                         case KeyRCONTROL:
+00100                         case KeyLCONTROL:
+00101                                 _KeyArray.set (KeyCONTROL);
+00102                                 _KeyDownArray.set (KeyCONTROL);
+00103                         break;
+00104                         case KeyRSHIFT:
+00105                         case KeyLSHIFT:
+00106                                 _KeyArray.set (KeySHIFT);
+00107                                 _KeyDownArray.set (KeySHIFT);
+00108                         break;
+00109                         case KeyRMENU:
+00110                         case KeyLMENU:
+00111                                 _KeyArray.set (KeyMENU);
+00112                                 _KeyDownArray.set (KeyMENU);
+00113                         break;
+00114                         default:
+00115                         break;
+00116                 }
+00117         }
+00118         // Key up ?
+00119         if (event==EventKeyUpId)
+00120         {
+00121                 CEventKeyUp *pEvent=(CEventKeyUp*)&event;
+00122                 
+00123                 _KeyArray.clear (pEvent->Key);
+00124                 
+00125                 switch(pEvent->Key)
+00126                 {
+00127                         case KeyRCONTROL:
+00128                         case KeyLCONTROL:
+00129                                 // Do not "raise up" the key, until someone has get the state of this key.                                              
+00130                                 if (!_KeyArray[KeyLCONTROL] && !_KeyArray[KeyRCONTROL])
+00131                                 {
+00132                                         _KeyArray.clear(KeyCONTROL);                                    
+00133 
+00134                                         if(_KeyReleaseArray.get(KeyCONTROL))
+00135                                         {                                               
+00136                                                 _KeyDownArray.clear (KeyCONTROL);                                               
+00137                                                 _KeyReleaseArray.clear (KeyCONTROL);
+00138                                         }
+00139                                 }
+00140                         break;
+00141                         case KeyRSHIFT:
+00142                         case KeyLSHIFT:
+00143                                 if (!_KeyArray[KeyLSHIFT] && !_KeyArray[KeyRSHIFT])
+00144                                 {
+00145                                         _KeyArray.clear(KeySHIFT);                                      
+00146 
+00147                                         if(_KeyReleaseArray.get(KeySHIFT))
+00148                                         {                                               
+00149                                                 _KeyDownArray.clear (KeySHIFT);                                         
+00150                                                 _KeyReleaseArray.clear (KeySHIFT);
+00151                                         }
+00152                                 }
+00153                         break;
+00154                         case KeyRMENU:
+00155                         case KeyLMENU:
+00156                                 if (!_KeyArray[KeyLMENU] && !_KeyArray[KeyRMENU])
+00157                                 {
+00158                                         _KeyArray.clear(KeyMENU);                                       
+00159 
+00160                                         if(_KeyReleaseArray.get(KeyMENU))
+00161                                         {                                               
+00162                                                 _KeyDownArray.clear (KeyMENU);                                          
+00163                                                 _KeyReleaseArray.clear (KeyMENU);
+00164                                         }
+00165                                 }
+00166                         break;                  
+00167                         default: break;
+00168                 }
+00169 
+00170 
+00171                 // Do not "raise up" the key, until someone has get the state of this key.
+00172                 if(_KeyReleaseArray.get(pEvent->Key))
+00173                 {                       
+00174                         _KeyDownArray.clear (pEvent->Key);
+00175                         _KeyReleaseArray.clear (pEvent->Key);
+00176                 }
+00177 
+00178         }
+00179         // Activate false ?
+00180         if (event==EventSetFocusId)
+00181         {
+00182                 CEventSetFocus *pEvent=(CEventSetFocus *)&event;
+00183                 if (!pEvent->Get)
+00184                 {
+00185                         // Disactive all keys
+00186                         _KeyArray.clearAll ();
+00187                         _KeyDownArray.clearAll ();
+00188                         _KeyReleaseArray.clearAll ();                   
+00189                 }
+00190         }
+00191 }
+00192 
+00193 
+00194 // ***************************************************************************
+00195 void CEventListenerAsync::reset ()
+00196 {
+00197         _KeyArray.clearAll ();
+00198         _KeyDownArray.clearAll ();
+00199         _KeyReleaseArray.clearAll ();
+00200 }
+00201 
+00202 
+00203 } // NLMISC
+