CanvasHolder.qo.h

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//# Copyright (C) 2005
//# 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
//#
#ifndef CANVASHOLDER_QO_H
#define CANVASHOLDER_QO_H

#include <QWidget>
#include <qwt_legend.h>
#include <display/QtPlotter/CanvasHolder.ui.h>
#include <display/QtPlotter/QtCanvas.qo.h>

namespace casa {

//Holds the QtCanvas where the spectral profile is drawn.  When a legend
//external to the canvas is shown, this class handles the legend and the coordination
//between the legend and the pixel canvas.

        class CanvasHolder : public QWidget {
                Q_OBJECT

        public:
                CanvasHolder(QWidget *parent = 0);

                //Sets the visibility of the the legend.
                void setShowLegend( bool showLegend );

                //Determines whether a color bar will be drawn along side the legend
                //text.  When a color bar is not used, the text will be colored to
                //identify the curve.
                void setColorBarVisibility( bool visible );

                //Returns a list of curve identifiers
                QList<QString> getCurveLabels();

                //Sets the curve identifier
                void setCurveLabels( const QList<QString>& curveNames );

                //Location of the legend
                enum LegendLocation { CANVAS, CANVAS_BELOW, CANVAS_RIGHT};
                void setLegendPosition( int location );
                QtCanvas* getCanvas();
                ~CanvasHolder();

        private slots:
                void changeLegendDisplay();

        private:
                void refreshLegend();
                void addLegend( QBoxLayout* innerLayout, QBoxLayout* outerLayout );
                void addHorizontalLegend( QBoxLayout* verticalLayout );
                void addVerticalLegend( QBoxLayout* verticalLayout );

                Ui::CanvasHolderClass ui;
                bool showLegend;
                bool colorBarVisible;
                LegendLocation legendLocation;
                QtCanvas pixelCanvas;
                QWidget* legend;
                QWidget* centralWidget;
        };
}
#endif // CANVASHOLDER_H