//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
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// * LICENSE and available at  http://cern.ch/geant4/license .  These *
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// ********************************************************************
//
//
// $Id: G4Qt.hh,v 1.4 2008/11/06 10:06:33 lgarnier Exp $
// GEANT4 tag $Name:  $
//
//  To unify Qt event treatment between 
// G4/interfaces Qt sessions and G4/visualizations Qt drivers.
// L. Garnier

#ifndef G4QT_HH
#define G4QT_HH

#if defined(G4INTY_BUILD_QT) || defined(G4INTY_USE_QT)

#include "G4VInteractorManager.hh"

class G4UIQt;
class QWidget;
class QString;

// Class description :
//
//  G4Qt : a singleton to handle GUI sessions and visualization 
// drivers built over Qt. It permits to have one Qt main loop for 
// the whole application. The Qt toolkit is inited in the 
// constructor. It is done once for the whole application.
//
// Class description - end :

class G4Qt : public G4VInteractorManager {
public:
  static G4Qt* getInstance();
  static G4Qt* getInstance(int,char**,char*);
  G4bool Inited();
  void* GetEvent();
  void FlushAndWaitExecution();
  virtual ~G4Qt();                     
  bool AddTabVisWidget(QWidget*,QString,int,int);
  void SetG4UI(G4UIQt*);

private:
  G4Qt (int,char**,char*);                     
  static G4Qt* instance; // Pointer to single instance.
  int    argn;
  char** args;
  G4UIQt* fG4UI;
};

#endif //HAS_QT

#endif