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

#include <qwt_plot_magnifier.h>

Inheritance diagram for QwtPlotMagnifier:

Classes
class	PrivateData

Public Member Functions
QWidget *	canvas ()
	Return observed plot canvas. More...

const QWidget *	canvas () const
	Return Observed plot canvas. More...

bool	isAxisEnabled (int axis) const

QwtPlot *	plot ()
	Return plot widget, containing the observed plot canvas. More...

const QwtPlot *	plot () const
	Return plot widget, containing the observed plot canvas. More...

	QwtPlotMagnifier (QWidget *)

void	setAxisEnabled (int axis, bool on)
	En/Disable an axis. More...

virtual	~QwtPlotMagnifier ()
	Destructor. More...

Public Member Functions inherited from QwtMagnifier
virtual bool	eventFilter (QObject , QEvent )
	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...

Protected Member Functions
virtual void	rescale (double factor)

Protected Member Functions inherited from QwtMagnifier
virtual void	widgetKeyPressEvent (QKeyEvent *)

virtual void	widgetKeyReleaseEvent (QKeyEvent *)

virtual void	widgetMouseMoveEvent (QMouseEvent *)

virtual void	widgetMousePressEvent (QMouseEvent *)

virtual void	widgetMouseReleaseEvent (QMouseEvent *)

virtual void	widgetWheelEvent (QWheelEvent *)

Private Attributes
PrivateData *	d_data

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.

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.

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 )

protectedvirtual

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.

Member Data Documentation

PrivateData* QwtPlotMagnifier::d_data

private

Definition at line 50 of file qwt_plot_magnifier.h.

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

Classes

Public Member Functions

Protected Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation