ColormapInfo.h

Go to the documentation of this file.

//# ColormapInfo.h: store information about the dynamic mapping of a Colormap
//# Copyright (C) 1994,1995,1996,1997,1998,1999
//# 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
//#
//# $Id$

#include <casa/aips.h>

namespace casa { //# NAMESPACE CASA - BEGIN

class Colormap;

#ifndef TRIALDISPLAY_COLORMAPINFO_H
#define TRIALDISPLAY_COLORMAPINFO_H

// <summary>
// ColormapInfo stores information about the dynamic mapping of a Colormap.
// </summary>
//
// <synopsis>
// </synopsis>
//
// <motivation>
// </motivation>
//
// <example>
// </example>

class ColormapInfo {

 public:

  // (Required) default constructor.
  ColormapInfo();

  // Constructor taking a pointer to a Colormap, and the initial
  // weight, offset and size of the Colormap.
  ColormapInfo(const Colormap *colormap, const Float &weight, 
               const uInt &offset, const uInt &size);

  // Yield a pointer to the Colormap about which this stores
  // information.
  const Colormap *colormap() const 
    { return itsColormap; }

  // Return the current weight for this mapping.
  Float weight() const 
    { return itsWeight; }

  // Return the current offset for this mapping.
  uInt offset() const 
    { return itsOffset; }

  // Return the current size for this mapping.
  uInt size() const 
    { return itsSize; }

  // Set the weight for this mapping.
  void setWeight(const Float &weight);

  // Set the offset for this mapping.
  void setOffset(const uInt &offset);

  // Set the size for this mapping.
  void setSize(const uInt &size);

  // Increment and decrement the reference count for this mapping.
  // <group>
  void ref();
  void unref();
  // </group>

  // Return the current reference count.
  uInt refCount() const 
    { return itsRefCount; }

private:

  // Store the Colormap of this mapping here.
  const Colormap *itsColormap;

  // Store the weight of the mapping here.
  Float itsWeight;

  // Store the offset of the mapping here.
  uInt itsOffset;

  // Store the size of the mapping here.
  uInt itsSize;

  // Store the reference count of the mapping here.
  Int itsRefCount;

};


} //# NAMESPACE CASA - END

#endif