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//
// $Id: G4RTXScanner.hh,v 1.5 2010/06/14 14:33:34 gcosmo Exp $
// GEANT4 tag $Name: vis-V09-03-08 $
//
//

#ifdef G4VIS_BUILD_RAYTRACERX_DRIVER

#ifndef G4RTXScanner_H
#define G4RTXScanner_H 1

// class description:
//
// G4RTXScanner
// Provides a sequence of window coordinates suitable for a visible
// window of ever increasing resolution.

#include "G4VRTScanner.hh"

#include <X11/Xlib.h>
#include <X11/Xutil.h>

class G4ViewParameters;

class G4RTXScanner: public G4VRTScanner {

public: // with description

  G4RTXScanner();
  virtual ~G4RTXScanner();

  // Compiler defaults for copy constructor and assignmemt.

  virtual const G4String& GetGSName() const;
  // Get name that acts as graphics system name.

  virtual const G4String& GetGSNickname() const;
  // Get name that acts as graphics system nickname.  It is this that
  // the user specifies on the /vis/open and /vis/sceneHandler/create
  // commands.

  virtual void Initialize(G4int nRow, G4int nColumn);
  // Intialises scanner for window with nRow rows and nColumn columns.

  virtual G4bool Coords(G4int& iRow, G4int& iColumn);
  // Supplies coordinate (iRow,iColumn) and returns false when the
  // sequence has finished, i.e., on the call *after* suplying the
  // last valid coordinate.

  virtual void Draw
  (unsigned char red, unsigned char green, unsigned char blue);
  // Draw coloured square at current position.

  G4bool GetXWindow(const G4String& name, G4ViewParameters&);

protected:
  G4String theGSName, theGSNickname;
  G4int theNRow, theNColumn, theStep, theIRow, theIColumn;
  // X Window variables...
  Display* display;
  Window win;
  GC gc;
  XStandardColormap *scmap;
};

#endif

#endif
