QwtPlotMagnifier - Man Page
QwtPlotMagnifier provides zooming, by magnifying in steps.
Synopsis
#include <qwt_plot_magnifier.h>
Inherits QwtMagnifier.
Public Slots
virtual void rescale (double factor) override
Public Member Functions
QwtPlotMagnifier (QWidget *)
virtual ~QwtPlotMagnifier ()
Destructor.
void setAxisEnabled (QwtAxisId, bool on)
En/Disable an axis.
bool isAxisEnabled (QwtAxisId) const
QWidget * canvas ()
Return observed plot canvas.
const QWidget * canvas () const
Return Observed plot canvas.
QwtPlot * plot ()
Return plot widget, containing the observed plot canvas.
const QwtPlot * plot () const
Return plot widget, containing the observed plot canvas.
Additional Inherited Members
Detailed Description
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
Definition at line 30 of file qwt_plot_magnifier.h.
Constructor & Destructor Documentation
QwtPlotMagnifier::QwtPlotMagnifier (QWidget * canvas) [explicit]
Constructor
- Parameters
canvas Plot canvas to be magnified
Definition at line 30 of file qwt_plot_magnifier.cpp.
Member Function Documentation
bool QwtPlotMagnifier::isAxisEnabled (QwtAxisId axisId) const
Test if an axis is enabled
- Parameters
axisId Axis
- Returns
True, if the axis is enabled
- See also
setAxisEnabled()
Definition at line 67 of file qwt_plot_magnifier.cpp.
void QwtPlotMagnifier::rescale (double factor) [override], [virtual], [slot]
Zoom in/out the axes scales
- Parameters
factor A value < 1.0 zooms in, a value > 1.0 zooms out.
Definition at line 111 of file qwt_plot_magnifier.cpp.
void QwtPlotMagnifier::setAxisEnabled (QwtAxisId axisId, bool on)
En/Disable an axis. Only Axes that are enabled will be zoomed. All other axes will remain unchanged.
- Parameters
axisId Axis
on On/Off- See also
isAxisEnabled()
Definition at line 53 of file qwt_plot_magnifier.cpp.
Author
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