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

NAME
       QwtPlotPanner - QwtPlotPanner provides panning of a plot canvas.


SYNOPSIS
       #include <qwt_plot_panner.h>

       Inherits QwtPanner.

   Public Slots
       virtual void moveCanvas (int dx, int dy)

   Public Member Functions
       QwtPlotPanner (QWidget *)
           A panner for the canvas of a QwtPlot.
       virtual ~QwtPlotPanner ()
           Destructor.
       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.
       void setAxisEnabled (QwtAxisId axisId, bool on)
           En/Disable an axis.
       bool isAxisEnabled (QwtAxisId) const

   Protected Member Functions
       virtual QBitmap contentsMask () const override
       virtual QPixmap grab () const override

   Additional Inherited Members

Detailed Description
       QwtPlotPanner provides panning of a plot canvas.

       QwtPlotPanner is a panner for a plot canvas, that adjusts the scales of
       the axes after dropping the canvas on its new position.

       Together with QwtPlotZoomer and QwtPlotMagnifier powerful ways of
       navigating on a QwtPlot widget can be implemented easily.

       Note
           The axes are not updated, while dragging the canvas

       See also
           QwtPlotZoomer, QwtPlotMagnifier

       Definition at line 32 of file qwt_plot_panner.h.

Constructor & Destructor Documentation
   QwtPlotPanner::QwtPlotPanner (QWidget * canvas) [explicit]
       A panner for the canvas of a QwtPlot. The panner is enabled for all
       axes

       Parameters
           canvas Plot canvas to pan, also the parent object

       See also
           setAxisEnabled()

       Definition at line 128 of file qwt_plot_panner.cpp.

Member Function Documentation
   QBitmap QwtPlotPanner::contentsMask () const [override],  [protected],
       [virtual]
       Calculate a mask from the border path of the canvas

       Returns
           Mask as bitmap

       See also
           QwtPlotCanvas::borderPath()

       Reimplemented from QwtPanner.

       Definition at line 267 of file qwt_plot_panner.cpp.

   QPixmap QwtPlotPanner::grab () const [override],  [protected],  [virtual]
       Returns
           Pixmap with the content of the canvas

       Reimplemented from QwtPanner.

       Definition at line 278 of file qwt_plot_panner.cpp.

   bool QwtPlotPanner::isAxisEnabled (QwtAxisId axisId) const
       Test if an axis is enabled

       Parameters
           axisId Axis

       Returns
           True, if the axis is enabled

       See also
           setAxisEnabled(), moveCanvas()

       Definition at line 168 of file qwt_plot_panner.cpp.

   void QwtPlotPanner::moveCanvas (int dx, int dy) [virtual],  [slot]
       Adjust the enabled axes according to dx/dy

       Parameters
           dx Pixel offset in x direction
           dy Pixel offset in y direction

       See also
           QwtPanner::panned()

       Definition at line 216 of file qwt_plot_panner.cpp.

   void QwtPlotPanner::setAxisEnabled (QwtAxisId axisId, bool on)
       En/Disable an axis. Axes that are enabled will be synchronized to the
       result of panning. All other axes will remain unchanged.

       Parameters
           axisId Axis id
           on On/Off

       See also
           isAxisEnabled(), moveCanvas()

       Definition at line 154 of file qwt_plot_panner.cpp.


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

Version 6.2.0                   Sun Jul 18 2021               QwtPlotPanner(3)