ToolTipPicker.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 #ifndef TOOLTIPPICKER_H_
00026 #define TOOLTIPPICKER_H_
00027 
00028 #include <casaqt/QwtConfig.h>
00029 
00030 #include <qwt_plot_picker.h>
00031 #include <qwt_plot_canvas.h>
00032 
00033 namespace casa {
00034 
00035 class ToolTipPicker :QwtPlotPicker {
00036 
00037 public:
00038 #if QWT_VERSION >= 0x060000
00039         ToolTipPicker( int xAxis, int yAxis, RubberBand rubberBand,
00040                         DisplayMode trackorMode, QWidget* canvas );
00041 #else
00042         ToolTipPicker( int xAxis, int yAxis, int selectionFlags, RubberBand rubberBand,
00043                         DisplayMode trackorMode, QwtPlotCanvas* canvas );
00044 #endif
00045         void setData( const std::vector<float>& xVal, const std::vector<float>& yVal );
00046         void setLogScaleY( bool logScale );
00047         virtual QwtText trackerText( const QwtDoublePoint & pos ) const;
00048         virtual ~ToolTipPicker();
00049 
00050 private:
00051         int findClosestPoint( float xValue, float yValue ) const;
00052         std::pair<float,float> getRangeY() const;
00053         std::vector<float> xVector;
00054         std::vector<float> yVector;
00055         bool logScaleY;
00056 };
00057 
00058 } /* namespace casa */
00059 #endif /* TOOLTIPPICKER_H_ */