NAME

       QwtPlotMagnifier - QwtPlotMagnifier provides zooming, by magnifying in steps.

SYNOPSIS

       #include <qwt_plot_magnifier.h>

       Inherits QwtMagnifier.

   Public Member Functions
       QwtPlotMagnifier (QWidget *)
       virtual ~QwtPlotMagnifier ()
           Destructor.
       void setAxisEnabled (int axis, bool on)
           En/Disable an axis.
       bool isAxisEnabled (int axis) 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.

   Protected Member Functions
       virtual void rescale (double factor)

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

Constructor & Destructor Documentation

   QwtPlotMagnifier::QwtPlotMagnifier (QWidget * canvas) [explicit]
       Constructor

       Parameters:
           canvas Plot canvas to be magnified

Member Function Documentation

   bool QwtPlotMagnifier::isAxisEnabled (int axis) 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 (double factor) [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 (int axis, bool on)
       En/Disable an axis. Only Axes that are enabled will be zoomed. All other axes will remain
       unchanged.

       Parameters:
           axis Axis, see QwtPlot::Axis
           on On/Off

       See also:
           isAxisEnabled()

Author

       Generated automatically by Doxygen for Qwt User's Guide from the source code.