WorldAxesDD.h

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//# WorldAxesDD.h: world axis labelling DisplayData
//# Copyright (C) 2000,2001,2003,2004
//# 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_WORLDAXESDD_H
#define TRIALDISPLAY_WORLDAXESDD_H

#include <casa/aips.h>
#include <display/DisplayDatas/AxesDisplayData.h>

namespace casa { //# NAMESPACE CASA - BEGIN

        class DParameterChoice;

// <summary>
// A DisplayData to setup a World coordinate plot
// </summary>
//
// <use visibility=export>
//
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
//
// <prerequisite>
//   <li> DisplayData
//   <li> AxesDisplayData
// </prerequisite>
//
// <etymology>
// </etymology>
// <synopsis>
//
// </synopsis>

        class WorldAxesDD : public AxesDisplayData {

        public:

                // Constructor.
                WorldAxesDD();

                // Destructor.
                virtual ~WorldAxesDD();

                // Install the default options for this DisplayData.
                virtual void setDefaultOptions();

                // Apply options stored in <src>rec</src> to the DisplayData.  A
                // return value of <src>true</src> means a refresh is needed.
                // <src>recOut</src> contains any fields which were implicitly
                // changed as a result of the call to this function.
                virtual casacore::Bool setOptions(casacore::Record& rec, casacore::Record& recOut);

                // Retrieve the current and default options and parameter types.
                virtual casacore::Record getOptions( bool scrub=false ) const;

                // Create a new AxesDisplayMethod for drawing on the given
                // WorldCanvas when the AttributeBuffers are suitably matched to the
                // current state of this DisplayData and of the WorldCanvas/Holder.
                // The tag is a unique number used to identify the age of the newly
                // constructed CachingDisplayMethod.
                virtual CachingDisplayMethod* newDisplayMethod(WorldCanvas* worldCanvas,
                        AttributeBuffer* wchAttributes,
                        AttributeBuffer* ddAttributes,
                        CachingDisplayData* dd);

                // Return the current options of this DisplayData as an
                // AttributeBuffer.
                virtual AttributeBuffer optionsAsAttributes();

                virtual casacore::String spectralUnit() const {
                        return itsParamSpectralUnit->value();
                }

                virtual casacore::String velocityType() const {
                        return itsParamVelocityType->value();
                }

                virtual casacore::String axisText(const WorldCanvas* wc, const casacore::uInt axisNo) const;
                virtual casacore::String xAxisText(const WorldCanvas* wc=0) const;
                virtual casacore::String yAxisText(const WorldCanvas* wc=0) const;

                // Pure virtual function from DisplayData...
                casacore::String dataType() const {
                        return "label";
                }

                std::string errorMessage( ) const { return ""; }

        protected:

                // (Required) copy constructor.
                WorldAxesDD(const WorldAxesDD& other);

                // (Required) copy assignment.
                void operator=(const WorldAxesDD& other);

        private:

                // Install the default options for this DisplayData.
                void installDefaultOptions();

                // Set Spectral preference (options)
                DParameterChoice* itsParamSpectralUnit;
                DParameterChoice* itsParamVelocityType;

        };


} //# NAMESPACE CASA - END

#endif