QwtMagnifier provides zooming by magnifying in steps. More...

#include <qwt_magnifier.h>

Inheritance diagram for QwtMagnifier:

Classes
class	PrivateData

Public Member Functions
	QwtMagnifier (QWidget *)
	Constructor.

virtual	~QwtMagnifier ()
	Destructor .

QWidget *	parentWidget ()
	Return the parent widget where the rescaling happens.

const QWidget *	parentWidget () const
	Return the parent widget where the rescaling happens.

void	setEnabled (bool)
	En/disable the magnifier.

bool	isEnabled () const
	Return whether the magnifier is enabled.

void	setMouseFactor (double)
	Change the mouse factor.

double	mouseFactor () const
	Return the mouse factor.

void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)
	Assign the mouse button that is used for zooming in/out.

void	getMouseButton (Qt::MouseButton &, Qt::KeyboardModifiers &) const
	Get the mouse button and modifiers used for zooming.

void	setWheelFactor (double)
	Change the wheel factor.

double	wheelFactor () const
	Return the wheel factor.

void	setWheelModifiers (Qt::KeyboardModifiers)
	Assign keyboard modifiers for zooming in/out using the wheel.

Qt::KeyboardModifiers	wheelModifiers () const
	Return the wheel modifiers.

void	setKeyFactor (double)
	Change the key factor.

double	keyFactor () const
	Return the key factor.

void	setZoomInKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
	Assign the key that is used for zooming in.

void	getZoomInKey (int &key, Qt::KeyboardModifiers &) const
	Retrieve the settings of the zoom in key.

void	setZoomOutKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
	Assign the key that is used for zooming out.

void	getZoomOutKey (int &key, Qt::KeyboardModifiers &) const
	Retrieve the settings of the zoom out key.

virtual bool	eventFilter (QObject , QEvent ) override
	Event filter.

Protected Member Functions
virtual void	rescale (double factor)=0
	Rescale the parent widget.

virtual void	widgetMousePressEvent (QMouseEvent *)
	Handle a mouse press event for the observed widget.

virtual void	widgetMouseReleaseEvent (QMouseEvent *)
	Handle a mouse release event for the observed widget.

virtual void	widgetMouseMoveEvent (QMouseEvent *)
	Handle a mouse move event for the observed widget.

virtual void	widgetWheelEvent (QWheelEvent *)
	Handle a wheel event for the observed widget.

virtual void	widgetKeyPressEvent (QKeyEvent *)
	Handle a key press event for the observed widget.

virtual void	widgetKeyReleaseEvent (QKeyEvent *)
	Handle a key release event for the observed widget.

Detailed Description

QwtMagnifier provides zooming by magnifying in steps.

Constructor & Destructor Documentation

◆ QwtMagnifier()

QwtMagnifier::QwtMagnifier ( QWidget * parent )

explicit

Constructor.

◆ ~QwtMagnifier()

QwtMagnifier::~QwtMagnifier ( )

virtual

Destructor .

Member Function Documentation

◆ eventFilter()

bool QwtMagnifier::eventFilter	(	QObject *	object,
		QEvent *	event
	)

overridevirtual

Event filter.

◆ getMouseButton()

void QwtMagnifier::getMouseButton	(	Qt::MouseButton &	button,
		Qt::KeyboardModifiers &	modifiers
	)		const

Get the mouse button and modifiers used for zooming.

◆ getZoomInKey()

void QwtMagnifier::getZoomInKey	(	int &	key,
		Qt::KeyboardModifiers &	modifiers
	)		const

Retrieve the settings of the zoom in key.

◆ getZoomOutKey()

void QwtMagnifier::getZoomOutKey	(	int &	key,
		Qt::KeyboardModifiers &	modifiers
	)		const

Retrieve the settings of the zoom out key.

◆ isEnabled()

bool QwtMagnifier::isEnabled ( ) const

Return whether the magnifier is enabled.

◆ keyFactor()

double QwtMagnifier::keyFactor ( ) const

Return the key factor.

◆ mouseFactor()

double QwtMagnifier::mouseFactor ( ) const

Return the mouse factor.

◆ parentWidget() [1/2]

QWidget * QwtMagnifier::parentWidget ( )

Return the parent widget where the rescaling happens.

◆ parentWidget() [2/2]

const QWidget * QwtMagnifier::parentWidget ( ) const

Return the parent widget where the rescaling happens.

◆ rescale()

virtual void QwtMagnifier::rescale ( double factor )

protectedpure virtual

Rescale the parent widget.

◆ setEnabled()

void QwtMagnifier::setEnabled ( bool on )

En/disable the magnifier.

◆ setKeyFactor()

void QwtMagnifier::setKeyFactor ( double factor )

Change the key factor.

◆ setMouseButton()

void QwtMagnifier::setMouseButton	(	Qt::MouseButton	button,
		Qt::KeyboardModifiers	modifiers = `Qt::NoModifier`
	)

Assign the mouse button that is used for zooming in/out.

◆ setMouseFactor()

void QwtMagnifier::setMouseFactor ( double factor )

Change the mouse factor.

◆ setWheelFactor()

void QwtMagnifier::setWheelFactor ( double factor )

Change the wheel factor.

◆ setWheelModifiers()

void QwtMagnifier::setWheelModifiers ( Qt::KeyboardModifiers modifiers )

Assign keyboard modifiers for zooming in/out using the wheel.

◆ setZoomInKey()

void QwtMagnifier::setZoomInKey	(	int	key,
		Qt::KeyboardModifiers	modifiers = `Qt::NoModifier`
	)

Assign the key that is used for zooming in.

◆ setZoomOutKey()

void QwtMagnifier::setZoomOutKey	(	int	key,
		Qt::KeyboardModifiers	modifiers = `Qt::NoModifier`
	)

Assign the key that is used for zooming out.

◆ wheelFactor()

double QwtMagnifier::wheelFactor ( ) const

Return the wheel factor.

◆ wheelModifiers()

Qt::KeyboardModifiers QwtMagnifier::wheelModifiers ( ) const

Return the wheel modifiers.

◆ widgetKeyPressEvent()

void QwtMagnifier::widgetKeyPressEvent ( QKeyEvent * keyEvent )

protectedvirtual

Handle a key press event for the observed widget.

Parameters

keyEvent Key event

See also: eventFilter(), widgetKeyReleaseEvent()

Reimplemented in QwtPolarMagnifier.

◆ widgetKeyReleaseEvent()

void QwtMagnifier::widgetKeyReleaseEvent ( QKeyEvent * keyEvent )

protectedvirtual

Handle a key release event for the observed widget.

Parameters

keyEvent Key event

See also: eventFilter(), widgetKeyReleaseEvent()

◆ widgetMouseMoveEvent()

void QwtMagnifier::widgetMouseMoveEvent ( QMouseEvent * mouseEvent )

protectedvirtual

Handle a mouse move event for the observed widget.

Parameters

mouseEvent Mouse event

See also: eventFilter(), widgetMousePressEvent(), widgetMouseReleaseEvent(),

◆ widgetMousePressEvent()

void QwtMagnifier::widgetMousePressEvent ( QMouseEvent * mouseEvent )

protectedvirtual

Handle a mouse press event for the observed widget.

Parameters

mouseEvent Mouse event

See also: eventFilter(), widgetMouseReleaseEvent(), widgetMouseMoveEvent()

◆ widgetMouseReleaseEvent()

void QwtMagnifier::widgetMouseReleaseEvent ( QMouseEvent * mouseEvent )

protectedvirtual

Handle a mouse release event for the observed widget.

Parameters

mouseEvent Mouse event

See also: eventFilter(), widgetMousePressEvent(), widgetMouseMoveEvent(),

◆ widgetWheelEvent()

void QwtMagnifier::widgetWheelEvent ( QWheelEvent * wheelEvent )

protectedvirtual

Handle a wheel event for the observed widget.

Parameters

wheelEvent Wheel event

See also: eventFilter()

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

/home/runner/work/QWT/QWT/src/plot/qwt_magnifier.h
/home/runner/work/QWT/QWT/src/plot/qwt_magnifier.cpp

Classes

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ QwtMagnifier()

◆ ~QwtMagnifier()

Member Function Documentation

◆ eventFilter()

◆ getMouseButton()

◆ getZoomInKey()

◆ getZoomOutKey()

◆ isEnabled()

◆ keyFactor()

◆ mouseFactor()

◆ parentWidget() [1/2]

◆ parentWidget() [2/2]

◆ rescale()

◆ setEnabled()

◆ setKeyFactor()

◆ setMouseButton()

◆ setMouseFactor()

◆ setWheelFactor()

◆ setWheelModifiers()

◆ setZoomInKey()

◆ setZoomOutKey()

◆ wheelFactor()

◆ wheelModifiers()

◆ widgetKeyPressEvent()

◆ widgetKeyReleaseEvent()

◆ widgetMouseMoveEvent()

◆ widgetMousePressEvent()

◆ widgetMouseReleaseEvent()

◆ widgetWheelEvent()