ExternalAxisControl.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
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00023 //#                        Charlottesville, VA 22903-2475 USA
00024 //#
00025 
00026 #ifndef EXTERNALAXIS_WIDGET_H_
00027 #define EXTERNALAXIS_WIDGET_H_
00028 
00029 #include <QWidget>
00030 #include <qwt_plot.h>
00031 
00032 
00033 namespace casa {
00034 
00040 class ExternalAxisControl : public QWidget {
00041 public:
00042         ExternalAxisControl(QWidget* parent);
00043         void setAxisLabel( const QString& label );
00044         void setPlot( QwtPlot* canvas );
00045         virtual void paintEvent( QPaintEvent* event );
00046         virtual ~ExternalAxisControl();
00047 
00048 protected:
00049         virtual void drawTicks( QPainter* painter, int tickLength ) = 0;
00050         virtual void defineAxis( QLine& axisLine ) = 0;
00051         virtual void drawAxisLabel( QPainter* painter ) = 0;
00052         virtual int getCanvasHeight() const;
00053         virtual int getStartY() const;
00054         int getTickIncrement( int tickCount ) const;
00055         double getTickStartPixel( QwtPlot::Axis axis );
00056         double getTickDistance( QwtPlot::Axis axis );
00057         double getTickIncrement( double tickDistance, QwtPlot::Axis axis );
00058         QwtPlot* plot;
00059         QString axisLabel;
00060         const int AXIS_SMALL_SIDE;
00061         const int MARGIN;
00062         const int MIN_START_Y;
00063 
00064 private:
00065         void drawBackBone( QPainter* painter );
00066         void drawTicks( QPainter* painter );
00067         void drawLabel( QPainter* painter );
00068         const int FONT_SIZE;
00069         const int FONT_SIZE_AXIS_LABEL;
00070 };
00071 
00072 } /* namespace casa */
00073 #endif /* EXTERNALAXIS_WIDGET_H_ */
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