DDDRectangle.h

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//# DDDRectangle.h: implementation of rectangular DDDObject
//# Copyright (C) 1999,2000,2002
//# 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_DDDRECTANGLE_H
#define TRIALDISPLAY_DDDRECTANGLE_H

#include <casa/aips.h>
#include <casa/Arrays/Vector.h>
#include <casa/Containers/Record.h>
#include <display/DisplayDatas/DDDObject.h>

namespace casa { //# NAMESPACE CASA - BEGIN

// <summary>
// Implementation of a rectangular object for DrawingDisplayData class.
// </summary>

// <synopsis>
// This class implements the interface defined by DDDObject, to provide
// a rectangle object for registration with DrawingDisplayData objects.
// </synopsis>

        class DDDRectangle : public DDDObject {

        public:

                // Constructor taking a Record description.  Fields in the record,
                // on top of what is consumed by the DDDObject constructor, are:
                // <src>blc</src> and <src>trc</src>.
                DDDRectangle(const Record &description, DrawingDisplayData *owner);

                // Destructor.
                virtual ~DDDRectangle();


                // Draw this rectangle object for the given reason on the provided
                // WorldCanvas.
                virtual void draw(const Display::RefreshReason &reason,
                                  WorldCanvas *worldcanvas);

                // Return a record describing this object.
                virtual Record description();

                // Update this object based on the information in the provided
                // Record.
                virtual void setDescription(const Record &rec);

                // Event handlers.  The parent DrawingDisplayData will distribute
                // events as necessary to the various DDDObjects which comprise it.
                // <group>
                virtual void operator()(const WCRefreshEvent &/*ev*/) {
                        ;
                };
                virtual void operator()(const WCPositionEvent &ev);
                virtual void operator()(const WCMotionEvent &ev);
                // </group>

        protected:

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

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

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

        private:

                // Blc and trc of rectangle in world coordinates.
                Vector<Double> itsBlc, itsTrc;

                // Handle coordinates.
                Vector<Int> itsHX, itsHY;

                // Mode.
                DDDObject::Mode itsMode;

                // Store for movement bases.
                Int itsBaseMoveX, itsBaseMoveY;

                // is it a left handle?  a bottom handle?
                Bool itsLeftHandle, itsBottomHandle;

        };


} //# NAMESPACE CASA - END

#endif