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QwtPlotPanner

NAME

QwtPlotPanner -

QwtPlotPanner provides panning of a plot canvas.

SYNOPSIS

#include <qwt_plot_panner.h>

Inherits QwtPanner.

Public Member Functions

QwtPlotPanner (QwtPlotCanvas *)

virtual ~QwtPlotPanner ()

QwtPlotCanvas * canvas ()

const QwtPlotCanvas * canvas () const

QwtPlot * plot ()

const QwtPlot * plot () const

void setAxisEnabled (int axis, bool on)

bool isAxisEnabled (int axis) const

Protected Slots

virtual void moveCanvas (int dx, int dy)

Detailed Description

QwtPlotPanner provides panning of a plot canvas.

QwtPlotPanner is a panner for a QwtPlotCanvas, 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 (QwtPlotCanvas * canvas) [explicit]

Create a plot panner. The panner is enabled for all axes

Parameters:

canvas Plot canvas to pan, also the parent object

See also:

setAxisEnabled()

QwtPlotPanner::~QwtPlotPanner () [virtual]

Destructor.

Member Function Documentation

const QwtPlotCanvas * QwtPlotPanner::canvas () const

Return Observed plot canvas.

QwtPlotCanvas * QwtPlotPanner::canvas ()

Return observed plot canvas.

bool QwtPlotPanner::isAxisEnabled (int axis) constTest 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()

const QwtPlot * QwtPlotPanner::plot () const

Return plot widget, containing the observed plot canvas.

QwtPlot * QwtPlotPanner::plot ()

Return plot widget, containing the observed plot canvas.

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

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