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33fc476d89
* require qwt >=6.2 (and fallback to internal 6.3 if system's qwt doesn't suffice) * debian doesn't have qwt for Qt6 and won't have it for trixie
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/******************************************************************************
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* QwtPolar Widget Library
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* Copyright (C) 2008 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_POLAR_MAGNIFIER_H
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#define QWT_POLAR_MAGNIFIER_H
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#include "qwt_global.h"
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#include "qwt_magnifier.h"
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class QwtPolarPlot;
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class QwtPolarCanvas;
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/*!
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\brief QwtPolarMagnifier provides zooming, by magnifying in steps.
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Using QwtPlotMagnifier a plot can be zoomed in/out in steps using
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keys, the mouse wheel or moving a mouse button in vertical direction.
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Together with QwtPolarPanner it is possible to implement
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an individual navigation of the plot canvas.
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\sa QwtPolarPanner, QwtPolarPlot, QwtPolarCanvas
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*/
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class QWT_EXPORT QwtPolarMagnifier : public QwtMagnifier
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{
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Q_OBJECT
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public:
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explicit QwtPolarMagnifier( QwtPolarCanvas* );
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virtual ~QwtPolarMagnifier();
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void setUnzoomKey( int key, int modifiers );
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void getUnzoomKey( int& key, int& modifiers ) const;
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QwtPolarPlot* plot();
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const QwtPolarPlot* plot() const;
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QwtPolarCanvas* canvas();
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const QwtPolarCanvas* canvas() const;
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public Q_SLOTS:
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virtual void rescale( double factor ) QWT_OVERRIDE;
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void unzoom();
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protected:
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virtual void widgetKeyPressEvent( QKeyEvent* ) QWT_OVERRIDE;
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private:
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class PrivateData;
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PrivateData* m_data;
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};
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#endif
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