QwtPolarPanner Class Reference

QwtPolarPanner provides panning of a polar plot canvas. More...

#include <qwt_polar_panner.h>

Inheritance diagram for QwtPolarPanner:

Public Member Functions
	QwtPolarPanner (QwtPolarCanvas *)
	Create a plot panner for a polar plot canvas.
virtual	~QwtPolarPanner ()
	Destructor.
QwtPolarPlot *	plot ()
const QwtPolarPlot *	plot () const
QwtPolarCanvas *	canvas ()
const QwtPolarCanvas *	canvas () const

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

Protected Member Functions
virtual void	widgetMousePressEvent (QMouseEvent *)

Detailed Description

QwtPolarPanner provides panning of a polar plot canvas.

QwtPolarPanner is a panner for a QwtPolarCanvas, that adjusts the visible area after dropping the canvas on its new position.

Together with QwtPolarMagnifier individual ways of navigating on a QwtPolarPlot widget can be implemented easily.

See Also

QwtPolarMagnifier

Member Function Documentation

QwtPolarCanvas * QwtPolarPanner::canvas

(

)

Returns

observed plot canvas

const QwtPolarCanvas * QwtPolarPanner::canvas

(

)

const

Returns

observed plot canvas

void QwtPolarPanner::movePlot ( int  dx, int  dy  )

protectedvirtualslot

Adjust the zoomed area according to dx/dy

Parameters

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

See Also

QwtPanner::panned(), QwtPolarPlot::zoom()

QwtPolarPlot * QwtPolarPanner::plot

(

)

Returns

observed plot

const QwtPolarPlot * QwtPolarPanner::plot

(

)

const

Returns

observed plot

void QwtPolarPanner::widgetMousePressEvent ( QMouseEvent *  event )

protectedvirtual

Block panning when the plot zoom factor is >= 1.0.

Parameters

event

Mouse event