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QwtPlotMagnifier

QwtPlotMagnifier

Section: C Library Functions (3) Updated: 22 Mar 2009
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NAME

QwtPlotMagnifier - QwtPlotMagnifier provides zooming, by magnifying in steps.

 

SYNOPSIS


#include <qwt_plot_magnifier.h>

Inherits QwtMagnifier.

 

Public Member Functions


QwtPlotMagnifier (QwtPlotCanvas *)

virtual ~QwtPlotMagnifier ()

void setAxisEnabled (int axis, bool on)

bool isAxisEnabled (int axis) const

QwtPlotCanvas * canvas ()

const QwtPlotCanvas * canvas () const

QwtPlot * plot ()

const QwtPlot * plot () const
 

Protected Member Functions


virtual void rescale (double factor)
 

Detailed Description

QwtPlotMagnifier provides zooming, by magnifying in steps.

Using QwtPlotMagnifier a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction.

Together with QwtPlotZoomer and QwtPlotPanner it is possible to implement individual and powerful navigation of the plot canvas.

See also:

QwtPlotZoomer, QwtPlotPanner, QwtPlot

 

Constructor & Destructor Documentation

 

QwtPlotMagnifier::QwtPlotMagnifier (QwtPlotCanvas * canvas) [explicit]

Constructor

Parameters:

canvas Plot canvas to be magnified

 

QwtPlotMagnifier::~QwtPlotMagnifier () [virtual]

Destructor.

 

Member Function Documentation

 

const QwtPlotCanvas * QwtPlotMagnifier::canvas () const

Return Observed plot canvas.

 

QwtPlotCanvas * QwtPlotMagnifier::canvas ()

Return observed plot canvas.

 

bool QwtPlotMagnifier::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()

 

const QwtPlot * QwtPlotMagnifier::plot () const

Return plot widget, containing the observed plot canvas.

 

QwtPlot * QwtPlotMagnifier::plot ()

Return plot widget, containing the observed plot canvas.

 

void QwtPlotMagnifier::rescale (double factor) [protected, virtual]

Zoom in/out the axes scales

Parameters:

factor A value < 1.0 zooms in, a value > 1.0 zooms out.

Implements QwtMagnifier.  

void QwtPlotMagnifier::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()

 

Author

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


 

Index

NAME
SYNOPSIS
Public Member Functions
Protected Member Functions
Detailed Description
Constructor & Destructor Documentation
QwtPlotMagnifier::QwtPlotMagnifier (QwtPlotCanvas * canvas) [explicit]
QwtPlotMagnifier::~QwtPlotMagnifier () [virtual]
Member Function Documentation
const QwtPlotCanvas * QwtPlotMagnifier::canvas () const
QwtPlotCanvas * QwtPlotMagnifier::canvas ()
bool QwtPlotMagnifier::isAxisEnabled (int axis) const
const QwtPlot * QwtPlotMagnifier::plot () const
QwtPlot * QwtPlotMagnifier::plot ()
void QwtPlotMagnifier::rescale (double factor) [protected, virtual]
void QwtPlotMagnifier::setAxisEnabled (int axis, bool on)
Author

This document was created by man2html, using the manual pages.
Time: 21:53:52 GMT, April 16, 2011