Man page - qwtplotpanner(3)

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Manual

QwtPlotPanner

NAME
SYNOPSIS
Public Member Functions
Protected Slots
Protected Member Functions
Additional Inherited Members
Detailed Description
Constructor & Destructor Documentation
QwtPlotPanner::QwtPlotPanner (QWidget * canvas) [explicit]
Member Function Documentation
QBitmap QwtPlotPanner::contentsMask () const [protected], [virtual]
QPixmap QwtPlotPanner::grab () const [protected], [virtual]
bool QwtPlotPanner::isAxisEnabled (int axis) const
void QwtPlotPanner::moveCanvas (int dx, int dy) [protected], [virtual],[slot]
void QwtPlotPanner::setAxisEnabled (int axis, bool on)
Author

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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