terrainNavigationHandler.h

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/*******************************************************************************
** Copyright (c) 2003 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: terrainNavigationHandler.h,v $ $Revision: 1.5 $ $State: Exp $
*******************************************************************************/


#ifndef TERRAINNAVIGATIONHANDLER_H_
#define TERRAINNAVIGATIONHANDLER_H_

#include "tmEventHandler/navigationHandler.h"
#include "symbolMapper/modelData.h"
#include "terrainEventHandler/terrainEventHandlerDefines.h"
#include <QtCore/QHash>

class DT_DLL_terrainEventHandler DtTerrainNavigationHandler : public DtNavigationHandler
{
   Q_OBJECT

public:
   DtTerrainNavigationHandler();
   
   virtual ~DtTerrainNavigationHandler();
   
public:
   static DtEventHandler* create(DtEventController* owner, void* usr);

   virtual bool tracking(DtTMMapArea* area) const;

public slots:
   virtual void clearTracking(const DtModelKey&);

   virtual void setCenterSelection(DtTMMapArea* area, const DtModelData&);
   virtual void setTrackSelection(DtTMMapArea* area, const DtModelData&);

   virtual void tick();

signals:
   void changedTrackingFor(DtTMMapArea* area, bool tracking);

protected:
   virtual bool userDefinedAction(DtUserDefinedType iAction, void* usr);

   virtual void setCenterSelection(DtTMMapArea* area);
   virtual void setTrackSelection(DtTMMapArea* area);
   virtual void clearTracking(DtTMMapArea* area);

protected:
   QHash<DtTMMapArea*, const DtModelData*> myTrackedSelections;
};

#endif //TERRAINNAVIGATIONHANDLER_H_