QwtPlotMagnifier(3) Qwt User's Guide QwtPlotMagnifier(3)NAMEQwtPlotMagnifier-
SYNOPSIS
#include <qwt_plot_magnifier.h>
Inherits QwtMagnifier.
Public Member Functions
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)
Protected Member Functions
virtual void rescale (double factor)
Detailed DescriptionQwtPlotMagnifier 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 & Destructor Documentation
QwtPlotMagnifier::QwtPlotMagnifier (QwtPlotCanvas *canvas) [explicit]
Constructor
Parameters:
canvas Plot canvas to be magnified
Member Function Documentation
bool QwtPlotMagnifier::isAxisEnabled (intaxis) const
Test if an axis is enabled
Parameters:
axis Axis, see QwtPlot::Axis
Returns:
True, if the axis is enabled
See also:
setAxisEnabled()
void QwtPlotMagnifier::rescale (doublefactor) [protected], [virtual]
Zoom in/out the axes scales
Parameters:
factor A value < 1.0 zooms in, a value > 1.0 zooms out.
Implements QwtMagnifier.
void QwtPlotMagnifier::setAxisEnabled (intaxis, boolon)
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()Author
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Version 5.2.3 Tue Nov 20 2012 QwtPlotMagnifier(3)