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Lts/Viewer/SituationMap/Rubberbands/event_delegater.cpp

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+/**
+**
+** @RDE_HEADER@
+** Event Dispatcher for Qt5 to delegate mouse and keyboard event to another event dispatcher
+** $Id$
+** $HeadURL$
+** $Author$
+**
+** -----------------------------------------------------------------------------------------------
+**
+** Hardware-Environment: Intel-PC
+** Software-Environment: Windows 7, Qt 5.4. ArcGIS 10.2.5
+**
+** Language ........: C++ 11
+**
+** -----------------------------------------------------------------------------------------------
+**
+** Author ...........: Jörg Turla, SPD G, Tel. 3132
+**
+** -----------------------------------------------------------------------------------------------
+**
+** Notes .........:
+**
+**   15.04.2015, JT  : First edition
+**
+** -----------------------------------------------------------------------------------------------
+*/
+
+#include "event_delegater.h"
+
+namespace SituationMap { namespace RB
+{
+
+   EventDelegater::EventDelegater(QWidget * getEventsFrom, AbstractEventDispatcher * delegateEventTo) 
+      : AbstractEventDispatcher(getEventsFrom), _delegateEventTo(delegateEventTo)
+   {
+      connect( delegateEventTo, &AbstractEventDispatcher::signalKickTheBucket,
+               this           , &AbstractEventDispatcher::onDo_kickTheBucket    );
+
+      connect( this           , &AbstractEventDispatcher::signalKickTheBucket,
+               delegateEventTo, &AbstractEventDispatcher::onDo_kickTheBucket    );
+
+     _restoreMouseTracking = delegateEventTo->_restoreMouseTracking;
+     _whatsThisBackup      = delegateEventTo->_whatsThisBackup;
+
+   } /* EventDispatcher::EventDispatcher */ 
+
+
+   bool EventDelegater::eventFilter(QObject * watched, QEvent * e)
+   {
+      if (hasFinished())    return true; // don't accept new events if  dispatcher is going to finish
+      if (hasActiveEvent()) return true; // don't accept new events before last event has been handled completly
+
+      if (_delegateEventTo != nullptr)
+      {
+         return _delegateEventTo->eventFilter( watched, e );
+      }
+      return false;
+   } /* EventDispatcher::eventFilter */
+
+
+   void EventDelegater::KickTheBucket()
+   {
+      if (_delegateEventTo != nullptr)
+      {
+         _delegateEventTo->unlinkEventDispatcher();
+      }
+      AbstractEventDispatcher::KickTheBucket();
+   } /* EventDelegater::KickTheBucket */
+
+
+} } /* namespace SituationMap::RB */