DSWorldText.h

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//# DSWorldText.h : Implementation of a world coords. DSText
//# Copyright (C) 1998,1999,2000,2001,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA
//#
//# $Id: 
#ifndef TRIALDISPLAY_DSWORLDTEXT_H
#define TRIALDISPLAY_DSWORLDTEXT_H

#include <casa/aips.h>
#include <casa/Arrays/Vector.h> 
#include <casa/Arrays/Matrix.h>

#include <casa/Quanta/Quantum.h>
#include <casa/Quanta/QuantumHolder.h>
#include <display/Display/PanelDisplay.h>

#include <display/DisplayShapes/DSText.h>
#include <display/DisplayShapes/DisplayShapeWithCoords.h>

namespace casa { //# NAMESPACE CASA - BEGIN

// <summary>
// Implementation of a world coords. DSText
// </summary>

class PanelDisplay;
class DSPixelText;
class DSScreenText;

class DSWorldText : public DSText , public DisplayShapeWithCoords {

public:

  DSWorldText();
  DSWorldText(const Record& settings, PanelDisplay* pd);
  DSWorldText(DSScreenText& other, PanelDisplay* pd);
  DSWorldText(DSPixelText& other, PanelDisplay* pd);

  virtual ~DSWorldText();

  virtual void recalculateScreenPosition();

  virtual void move(const Float& dX, const Float& dY);
  virtual void setCenter(const Float& xPos, const Float& yPos);
  virtual void draw(PixelCanvas* pc);
  
  virtual Bool setOptions(const Record& settings);
  virtual Record getOptions();

  virtual Record getRawOptions() {
    return DSText::getOptions();
  }
  
  virtual PanelDisplay* panelDisplay()  {
    return itsPD;
  }
private:
  
  // Based on a WC option record
  //  virtual Bool chooseWC(const Record& settings, PanelDisplay* pd, 
  //            WorldCanvas* wc);
  
  // Based on a pixel center
  //  virtual Bool chooseWC(const Float& xPos, const Float& yPos, 
  //            PanelDisplay* pd, 
  //            WorldCanvas* wc);
  
  // The paneldisplay from which I may choose an appropriate WC
  PanelDisplay* itsPD;

  // The WC of my choosing
  WorldCanvas* itsWC;

  // The center of the marker in world co-ords.
  Vector<Quantum<Double> > itsWorldCenter;
  
  void updateWCent();
};

} //# NAMESPACE CASA - END

#endif