QwtPlotMagnifier Class Reference

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

#include <qwt_plot_magnifier.h>

Inheritance diagram for QwtPlotMagnifier:

Classes
class	PrivateData

Public Slots
virtual void	rescale (double factor) QWT_OVERRIDE

Public Member Functions
QWidget *	canvas ()
	Return observed plot canvas. More...
const QWidget *	canvas () const
bool	isAxisEnabled (QwtAxisId) const
QwtPlot *	plot ()
	Return plot widget, containing the observed plot canvas. More...
const QwtPlot *	plot () const
	QwtPlotMagnifier (QWidget *)
void	setAxisEnabled (QwtAxisId, bool on)
	En/Disable an axis. More...
virtual	~QwtPlotMagnifier ()
	Destructor. More...
Public Member Functions inherited from QwtMagnifier
virtual bool	eventFilter (QObject *, QEvent *) QWT_OVERRIDE
	Event filter. More...
void	getMouseButton (Qt::MouseButton &, Qt::KeyboardModifiers &) const
void	getZoomInKey (int &key, Qt::KeyboardModifiers &) const
	Retrieve the settings of the zoom in key. More...
void	getZoomOutKey (int &key, Qt::KeyboardModifiers &) const
	Retrieve the settings of the zoom out key. More...
bool	isEnabled () const
double	keyFactor () const
double	mouseFactor () const
QWidget *	parentWidget ()
const QWidget *	parentWidget () const
	QwtMagnifier (QWidget *)
void	setEnabled (bool)
	En/disable the magnifier. More...
void	setKeyFactor (double)
	Change the key factor. More...
void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)
void	setMouseFactor (double)
	Change the mouse factor. More...
void	setWheelFactor (double)
	Change the wheel factor. More...
void	setWheelModifiers (Qt::KeyboardModifiers)
void	setZoomInKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
void	setZoomOutKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
double	wheelFactor () const
Qt::KeyboardModifiers	wheelModifiers () const
virtual	~QwtMagnifier ()
	Destructor. More...

Private Attributes
PrivateData *	m_data

Additional Inherited Members
Protected Member Functions inherited from QwtMagnifier
virtual void	rescale (double factor)=0
virtual void	widgetKeyPressEvent (QKeyEvent *)
virtual void	widgetKeyReleaseEvent (QKeyEvent *)
virtual void	widgetMouseMoveEvent (QMouseEvent *)
virtual void	widgetMousePressEvent (QMouseEvent *)
virtual void	widgetMouseReleaseEvent (QMouseEvent *)
virtual void	widgetWheelEvent (QWheelEvent *)

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 30 of file qwt_plot_magnifier.h.

Constructor & Destructor Documentation

QwtPlotMagnifier()

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::~QwtPlotMagnifier ( )

virtual

Destructor.

Definition at line 37 of file qwt_plot_magnifier.cpp.

Member Function Documentation

canvas() [1/2]

const QWidget * QwtPlotMagnifier::canvas

(

)

Return observed plot canvas.

Return Observed plot canvas.

Definition at line 76 of file qwt_plot_magnifier.cpp.

canvas() [2/2]

const QWidget* QwtPlotMagnifier::canvas

(

)

const

isAxisEnabled()

bool QwtPlotMagnifier::isAxisEnabled

(

QwtAxisId

axisId

)

const

Test if an axis is enabled

Parameters

axisId

Axis

Returns

True, if the axis is enabled

See also

setAxisEnabled()

Definition at line 67 of file qwt_plot_magnifier.cpp.

plot() [1/2]

const QwtPlot * QwtPlotMagnifier::plot

(

)

Return plot widget, containing the observed plot canvas.

Definition at line 88 of file qwt_plot_magnifier.cpp.

plot() [2/2]

const QwtPlot* QwtPlotMagnifier::plot

(

)

const

rescale

void QwtPlotMagnifier::rescale ( double  factor )

virtualslot

Zoom in/out the axes scales

Parameters

factor

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

Reimplemented in PlotMagnifier.

Definition at line 111 of file qwt_plot_magnifier.cpp.

setAxisEnabled()

void QwtPlotMagnifier::setAxisEnabled	(	QwtAxisId	axisId,
		bool	on
	)

En/Disable an axis.

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

Parameters

axisId	Axis
on	On/Off

See also

isAxisEnabled()

Definition at line 53 of file qwt_plot_magnifier.cpp.

Member Data Documentation

m_data

PrivateData* QwtPlotMagnifier::m_data

private

Definition at line 51 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