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CanvasHolder.qo.h
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00001 //# Copyright (C) 2005
00002 //# Associated Universities, Inc. Washington DC, USA.
00003 //#
00004 //# This library is free software; you can redistribute it and/or modify it
00005 //# under the terms of the GNU Library General Public License as published by
00006 //# the Free Software Foundation; either version 2 of the License, or (at your
00007 //# option) any later version.
00008 //#
00009 //# This library is distributed in the hope that it will be useful, but WITHOUT
00010 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00011 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00012 //# License for more details.
00013 //#
00014 //# You should have received a copy of the GNU Library General Public License
00015 //# along with this library; if not, write to the Free Software Foundation,
00016 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00017 //#
00018 //# Correspondence concerning AIPS++ should be addressed as follows:
00019 //#        Internet email: aips2-request@nrao.edu.
00020 //#        Postal address: AIPS++ Project Office
00021 //#                        National Radio Astronomy Observatory
00022 //#                        520 Edgemont Road
00023 //#                        Charlottesville, VA 22903-2475 USA
00024 //#
00025 #ifndef CANVASHOLDER_QO_H
00026 #define CANVASHOLDER_QO_H
00027 
00028 #include <QtGui/QWidget>
00029 #include <qwt_legend.h>
00030 #include <display/QtPlotter/CanvasHolder.ui.h>
00031 #include <display/QtPlotter/QtCanvas.qo.h>
00032 
00033 namespace casa {
00034 
00035 //Holds the QtCanvas where the spectral profile is drawn.  When a legend
00036 //external to the canvas is shown, this class handles the legend and the coordination
00037 //between the legend and the pixel canvas.
00038 
00039 class CanvasHolder : public QWidget
00040 {
00041     Q_OBJECT
00042 
00043 public:
00044     CanvasHolder(QWidget *parent = 0);
00045 
00046     //Sets the visibility of the the legend.
00047     void setShowLegend( bool showLegend );
00048 
00049     //Determines whether a color bar will be drawn along side the legend
00050     //text.  When a color bar is not used, the text will be colored to
00051     //identify the curve.
00052     void setColorBarVisibility( bool visible );
00053 
00054     //Returns a list of curve identifiers
00055     QList<QString> getCurveLabels();
00056 
00057     //Sets the curve identifier
00058     void setCurveLabels( const QList<QString>& curveNames );
00059 
00060     //Location of the legend
00061     enum LegendLocation { CANVAS, CANVAS_BELOW, CANVAS_RIGHT};
00062     void setLegendPosition( int location );
00063     QtCanvas* getCanvas();
00064     ~CanvasHolder();
00065 
00066 private slots:
00067         void changeLegendDisplay();
00068 
00069 private:
00070     void refreshLegend();
00071     void addLegend( QBoxLayout* innerLayout, QBoxLayout* outerLayout );
00072     void addHorizontalLegend( QBoxLayout* verticalLayout );
00073     void addVerticalLegend( QBoxLayout* verticalLayout );
00074 
00075     Ui::CanvasHolderClass ui;
00076     bool showLegend;
00077     bool colorBarVisible;
00078     LegendLocation legendLocation;
00079     QtCanvas pixelCanvas;
00080     QWidget* legend;
00081     QWidget* centralWidget;
00082 };
00083 }
00084 #endif // CANVASHOLDER_H