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QwtPlotMagnifier(3) Qwt User's Guide QwtPlotMagnifier(3)

QwtPlotMagnifier -

#include <qwt_plot_magnifier.h>
Inherits QwtMagnifier.


QwtPlotMagnifier (QwtPlotCanvas *)
 
virtual ~QwtPlotMagnifier ()
 
QwtPlotCanvas * canvas ()
 
const QwtPlotCanvas * canvas () const
 
bool isAxisEnabled (int axis) const
 
QwtPlot * plot ()
 
const QwtPlot * plot () const
 
void setAxisEnabled (int axis, bool on)
 


virtual void rescale (double factor)
 

QwtPlotMagnifier provides zooming, by magnifying in steps.
Using QwtPlotMagnifier a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction.
Together with QwtPlotZoomer and QwtPlotPanner it is possible to implement individual and powerful navigation of the plot canvas.
See also:
QwtPlotZoomer, QwtPlotPanner, QwtPlot

Constructor
Parameters:
canvas Plot canvas to be magnified

Test if an axis is enabled
Parameters:
axis Axis, see QwtPlot::Axis
Returns:
True, if the axis is enabled
See also:
setAxisEnabled()

Zoom in/out the axes scales
Parameters:
factor A value < 1.0 zooms in, a value > 1.0 zooms out.
Implements QwtMagnifier.

En/Disable an axis. Axes that are enabled will be synchronized to the result of panning. All other axes will remain unchanged.
Parameters:
axis Axis, see QwtPlot::Axis
 
on On/Off
See also:
isAxisEnabled()

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Tue Nov 20 2012 Version 5.2.3

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