NAME

       QwtPlotPanner - QwtPlotPanner provides panning of a plot canvas.

SYNOPSIS

       #include <qwt_plot_panner.h>

       Inherits QwtPanner.

   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 (int axis, bool on)
           En/Disable an axis.
       bool isAxisEnabled (int axis) const

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

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

   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

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()

Member Function Documentation

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

       Returns:
           Mask as bitmap

       See also:
           QwtPlotCanvas::borderPath()

       Reimplemented from QwtPanner.

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

       Reimplemented from QwtPanner.

   bool QwtPlotPanner::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(), moveCanvas()

   void QwtPlotPanner::moveCanvas (int dx, int dy) [protected],  [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()

   void QwtPlotPanner::setAxisEnabled (int axis, 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:
           axis Axis, see QwtPlot::Axis
           on On/Off

       See also:
           isAxisEnabled(), moveCanvas()

Author

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