55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 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_PLOT_MAGNIFIER_H
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#define QWT_PLOT_MAGNIFIER_H 1
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#include "qwt_global.h"
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#include "qwt_magnifier.h"
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class QwtPlot;
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/*!
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\brief QwtPlotMagnifier 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 QwtPlotZoomer and QwtPlotPanner it is possible to implement
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individual and powerful navigation of the plot canvas.
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\sa QwtPlotZoomer, QwtPlotPanner, QwtPlot
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*/
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class QWT_EXPORT QwtPlotMagnifier: public QwtMagnifier
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{
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Q_OBJECT
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public:
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explicit QwtPlotMagnifier( QWidget * );
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virtual ~QwtPlotMagnifier();
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void setAxisEnabled( int axis, bool on );
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bool isAxisEnabled( int axis ) const;
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QWidget *canvas();
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const QWidget *canvas() const;
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QwtPlot *plot();
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const QwtPlot *plot() const;
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protected:
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virtual void rescale( double factor );
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private:
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class PrivateData;
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PrivateData *d_data;
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};
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#endif
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