QwtPlotMagnifier Class Reference

QwtPlotMagnifier provides zooming, by magnifying in steps. More...

#include <qwt_plot_magnifier.h>

Inheritance diagram for QwtPlotMagnifier:

List of all members.

Classes
class	PrivateData
Public Member Functions
QWidget *	canvas ()
	Return observed plot canvas.
const QWidget *	canvas () const
	Return Observed plot canvas.
bool	isAxisEnabled (int axis) const
QwtPlot *	plot ()
	Return plot widget, containing the observed plot canvas.
const QwtPlot *	plot () const
	Return plot widget, containing the observed plot canvas.
	QwtPlotMagnifier (QWidget *)
void	setAxisEnabled (int axis, bool on)
	En/Disable an axis.
virtual	~QwtPlotMagnifier ()
	Destructor.
Protected Member Functions
virtual void	rescale (double factor)
Private Attributes
PrivateData *	d_data

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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

Definition at line 29 of file qwt_plot_magnifier.h.

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Constructor & Destructor Documentation

QwtPlotMagnifier::QwtPlotMagnifier

(

QWidget *

canvas

)

[explicit]

Constructor

Parameters:

canvas

Plot canvas to be magnified

Definition at line 30 of file qwt_plot_magnifier.cpp.

QwtPlotMagnifier::~QwtPlotMagnifier

(

)

[virtual]

Destructor.

Definition at line 37 of file qwt_plot_magnifier.cpp.

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Member Function Documentation

QWidget * QwtPlotMagnifier::canvas

(

)

Return observed plot canvas.

Definition at line 76 of file qwt_plot_magnifier.cpp.

const QWidget * QwtPlotMagnifier::canvas

(

)

const

Return Observed plot canvas.

Definition at line 82 of file qwt_plot_magnifier.cpp.

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()

Definition at line 67 of file qwt_plot_magnifier.cpp.

QwtPlot * QwtPlotMagnifier::plot

(

)

Return plot widget, containing the observed plot canvas.

Definition at line 88 of file qwt_plot_magnifier.cpp.

const QwtPlot * QwtPlotMagnifier::plot

(

)

const

Return plot widget, containing the observed plot canvas.

Definition at line 98 of file qwt_plot_magnifier.cpp.

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.

Reimplemented in PlotMagnifier.

Definition at line 111 of file qwt_plot_magnifier.cpp.

void QwtPlotMagnifier::setAxisEnabled	(	int	axis,
		bool	on
	)

En/Disable an axis.

Only Axes that are enabled will be zoomed. All other axes will remain unchanged.

Parameters:

axis	Axis, see QwtPlot::Axis
on	On/Off

See also:

isAxisEnabled()

Definition at line 53 of file qwt_plot_magnifier.cpp.

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Member Data Documentation

PrivateData* QwtPlotMagnifier::d_data [private]

Reimplemented from QwtMagnifier.

Definition at line 50 of file qwt_plot_magnifier.h.

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The documentation for this class was generated from the following files:

• qwt_plot_magnifier.h
• qwt_plot_magnifier.cpp