DDDHandle.h

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00001 //# DDDHandle.h: class to draw handles on DDDObjects
00002 //# Copyright (C) 1999,2000,2001
00003 //# Associated Universities, Inc. Washington DC, USA.
00004 //#
00005 //# This library is free software; you can redistribute it and/or modify it
00006 //# under the terms of the GNU Library General Public License as published by
00007 //# the Free Software Foundation; either version 2 of the License, or (at your
00008 //# option) any later version.
00009 //#
00010 //# This library is distributed in the hope that it will be useful, but WITHOUT
00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00013 //# License for more details.
00014 //#
00015 //# You should have received a copy of the GNU Library General Public License
00016 //# along with this library; if not, write to the Free Software Foundation,
00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00018 //#
00019 //# Correspondence concerning AIPS++ should be addressed as follows:
00020 //#        Internet email: aips2-request@nrao.edu.
00021 //#        Postal address: AIPS++ Project Office
00022 //#                        National Radio Astronomy Observatory
00023 //#                        520 Edgemont Road
00024 //#                        Charlottesville, VA 22903-2475 USA
00025 //#
00026 //# $Id:
00027 
00028 #ifndef TRIALDISPLAY_DDDHANDLE_H
00029 #define TRIALDISPLAY_DDDHANDLE_H
00030 
00031 #include <casa/aips.h>
00032 #include <casa/Exceptions.h>
00033 #include <casa/Arrays/Vector.h>
00034 #include <casa/Arrays/Matrix.h>
00035 
00036 namespace casa { //# NAMESPACE CASA - BEGIN
00037 
00038 // <summary>
00039 // A class to draw and detect handles on a DDDObject
00040 // </summary>
00041 
00042 // <synopsis> This class defines a square handle and it's
00043 // behaviour. This can be used to interact with DDDObjects
00044 // </synopsis>
00045 
00046         class DDDHandle {
00047 
00048         public:
00049                 // enum describing the size of the handle
00050                 enum Size {NONE=0,SMALL,MEDIUM,LARGE};
00051 
00052                 // Default constructor
00053                 DDDHandle();
00054                 // Constructor taking the position where to place the handle and it's size
00055                 DDDHandle(Double posx, Double posy, DDDHandle::Size size=DDDHandle::MEDIUM);
00056 
00057                 // Destructor.
00058                 virtual ~DDDHandle();
00059 
00060                 // This function returns true when the input poistion is within the handle
00061                 virtual Bool underCursor(Double posx, Double posy) const;
00062 
00063                 // give the handle a new size
00064                 virtual void resize(const DDDHandle::Size& size);
00065                 // move the handle to a new position
00066                 virtual void move(Double dx, Double dy);
00067 
00068                 // <group>
00069                 // utility funtions to retrieve blc/trc of the handle or the handle corners
00070                 virtual Double blcX() const;
00071                 virtual Double blcY() const;
00072                 virtual Double trcX() const;
00073                 virtual Double trcY() const;
00074                 Matrix<Double> getHandle() const {
00075                         return itsCorners;
00076                 };
00077                 // </group>
00078 
00079                 // set up the handle
00080                 // <group>
00081                 void createHandle(Double x, Double y);
00082                 void createHandle(const Vector<Double>& point);
00083                 // </group>
00084 
00085                 DDDHandle(const DDDHandle &);
00086                 void operator=(const DDDHandle &);
00087 
00088         private:
00089                 // the corners
00090                 Matrix<Double> itsCorners;
00091                 // the size
00092                 DDDHandle::Size itsSize;
00093 
00094         };
00095 
00096 
00097 } //# NAMESPACE CASA - END
00098 
00099 #endif
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