PCITFiddler.h

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//# PCITFiddler.h: Colormap fiddling on the PixelCanvas
//# Copyright (C) 1999,2000
//# 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_PCITFIDDLER_H
#define TRIALDISPLAY_PCITFIDDLER_H

#include <casa/aips.h>
#include <display/DisplayEvents/PCInvisTool.h>

namespace casa { //# NAMESPACE CASA - BEGIN

// <summary>
// Colormap fiddling on the PixelCanvas.
// </summary>
//
// <synopsis>
// This class provides colormap fiddling via an invisible
// tool which gets registered with a specific PixelCanvas.
// </synopsis>

class PCITFiddler : public PCInvisTool {

 public:

  enum FiddleType {
    StretchAndShift,
    BrightnessAndContrast
  };

  // Constructor.  Requires a PixelCanvas to fiddle upon, and
  // optional specification of the fiddling type and key to
  // detect.
  PCITFiddler(PixelCanvas *pcanvas,
              const PCITFiddler::FiddleType &fiddletype = 
              PCITFiddler::StretchAndShift,
              Display::KeySym keysym = Display::K_Pointer_Button1);

  // Destructor.
  virtual ~PCITFiddler();

  // Set/get the fiddle type.
  // <group>
  virtual void setFiddleType(const PCITFiddler::FiddleType &fiddletype);
  virtual PCITFiddler::FiddleType getFiddleType()
    { return itsFiddleType; }
  // </group>

  // This function is called when a new position is ready.  We 
  // implement it to fiddle the Colormap in this class.
  virtual void positionReady();

 private:

  PCITFiddler::FiddleType itsFiddleType;

};  


} //# NAMESPACE CASA - END

#endif