26 lines
737 B
C++
26 lines
737 B
C++
/*****************************************************************************
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* Qwt Examples - Copyright (C) 2002 Uwe Rathmann
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* This file may be used under the terms of the 3-clause BSD License
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*****************************************************************************/
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#pragma once
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#include <QwtPlotPicker>
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class QwtPlotCurve;
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class QLineF;
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class CurveTracker : public QwtPlotPicker
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{
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public:
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CurveTracker( QWidget* );
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protected:
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virtual QwtText trackerTextF( const QPointF& ) const QWT_OVERRIDE;
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virtual QRect trackerRect( const QFont& ) const QWT_OVERRIDE;
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private:
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QString curveInfoAt( const QwtPlotCurve*, const QPointF& ) const;
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QLineF curveLineAt( const QwtPlotCurve*, double x ) const;
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};
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