The QGraphicsScale class provides a scale transformation. More...

Inheritance diagram for QGraphicsScale:

Public Signals
void	originChanged ()

void	scaleChanged ()

void	xScaleChanged ()

void	yScaleChanged ()

void	zScaleChanged ()

Public Signals inherited from QObject
void	destroyed (QObject *obj=nullptr)

void	objectNameChanged (const QString &objectName)

Public Methods
	QGraphicsScale (QObject *parent=nullptr)

	~QGraphicsScale ()

void	applyTo (QMatrix4x4 *matrix) const override

QVector3D	origin () const

void	setOrigin (const QVector3D &point)

void	setXScale (qreal value)

void	setYScale (qreal value)

void	setZScale (qreal value)

qreal	xScale () const

qreal	yScale () const

qreal	zScale () const

Public Methods inherited from QGraphicsTransform
	QGraphicsTransform (QObject *parent=nullptr)

	~QGraphicsTransform ()

Public Methods inherited from QObject
	QObject (QObject *parent=nullptr)

	~QObject ()

bool	blockSignals (bool block)

const QList< QObject * > &	children () const

bool	connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QString >	dynamicPropertyNames () const

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

template<typename T >
T	findChild (const QString &childName=QString ()) const

template<class T >
QList< T >	findChildren (const QRegularExpression &regExp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

template<class T >
QList< T >	findChildren (const QString &childName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

bool	inherits (const QString &className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

QObject *	parent () const

template<class T = QVariant>
T	property (const QString &name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const QString &name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)

QThread *	thread () const

Properties
	origin

	xScale

	yScale

	zScale

Properties inherited from QObject
	objectName

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()

Static Public Methods inherited from QObject
static bool	connect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

static bool	connect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ())

static bool	connect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...), Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotLambda, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, std::nullptr_t, const QObject receiver, std::nullptr_t)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...))

template<class Sender , class SignalClass , class... SignalArgs, class Receiver >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, std::nullptr_t slotMethod=nullptr)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotMethod)

static QMetaObject &	staticMetaObject ()

static QString	tr (const char text, const char comment=nullptr, std::optional< int > numArg=std::optional< int >())

Protected Slots inherited from QGraphicsTransform
void	update ()

Protected Methods inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signalMethod) const

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signalMethod) const

bool	isSignalConnected (const QMetaMethod &signalMethod) const

int	receivers (const QString &signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Related Functions inherited from QObject
T	qobject_cast (QObject *object)

	QObjectList

Detailed Description

The QGraphicsScale class provides a scale transformation. This class provides certain parameters to help control how the scale should be applied.

The origin is the point that the item is scaled from (i.e., it stays fixed relative to the parent as the rest of the item grows). By default the origin is QPointF(0, 0).

The parameters xScale, yScale, and zScale describe the scale factors to apply in horizontal, vertical, and depth directions. They can take on any value, including 0 (to collapse the item to a point) or negative value. A negative xScale value will mirror the item horizontally. A negative yScale value will flip the item vertically. A negative zScale will flip the item end for end.

See also: QGraphicsTransform, QGraphicsItem::setScale(), QTransform::scale()

Constructor & Destructor Documentation

QGraphicsScale::QGraphicsScale ( QObject * parent = nullptr )

Constructs an empty QGraphicsScale object with the given parent.

QGraphicsScale::~QGraphicsScale ( )

Destroys the graphics scale.

Method Documentation

void QGraphicsScale::applyTo ( QMatrix4x4 * matrix ) const

overridevirtual

Implements QGraphicsTransform::applyTo()

QVector3D QGraphicsScale::origin ( ) const

Returns the value of the property.

void QGraphicsScale::originChanged ( )

signal

QGraphicsScale emits this signal when its origin changes.

See also: QGraphicsScale::origin

void QGraphicsScale::scaleChanged ( )

signal

This signal is emitted whenever the xScale, yScale, or zScale of the object changes.

See also: QGraphicsScale::xScale, QGraphicsScale::yScale, QGraphicsScale::zScale

void QGraphicsScale::setOrigin ( const QVector3D & point )

Sets the value of the property to point.

void QGraphicsScale::setXScale ( qreal value )

Sets the value of the property to value.

void QGraphicsScale::setYScale ( qreal value )

Sets the value of the property to value.

void QGraphicsScale::setZScale ( qreal value )

Sets the value of the property to value.

qreal QGraphicsScale::xScale ( ) const

Returns the value of the property.

void QGraphicsScale::xScaleChanged ( )

signal

This signal is emitted whenever the xScale property changes.

qreal QGraphicsScale::yScale ( ) const

Returns the value of the property.

void QGraphicsScale::yScaleChanged ( )

signal

This signal is emitted whenever the yScale property changes.

qreal QGraphicsScale::zScale ( ) const

Returns the value of the property.

void QGraphicsScale::zScaleChanged ( )

signal

This signal is emitted whenever the zScale property changes.

Property Documentation

QGraphicsScale::origin

This property holds the origin of the scale in 3D space. All scaling will be done relative to this point. This point will stay fixed when the item is scaled.

See also: xScale, yScale, zScale

Properties	Class Methods
read	origin
write	setOrigin
notify	originChanged

QGraphicsScale::xScale

This property holds the horizontal scale factor. The scale factor can be any real number and the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be mirrored horizontally around its origin.

See also: yScale, zScale, origin

Properties	Class Methods
read	xScale
write	setXScale
notify	xScaleChanged

QGraphicsScale::yScale

This property holds the vertical scale factor. The scale factor can be any real number and the default value is 1.0. If you set the factor to 0.0 the item will be collapsed to a single point. If you provide a negative value the item will be flipped vertically around its origin.

See also: xScale, zScale, origin

Properties	Class Methods
read	yScale
write	setYScale
notify	yScaleChanged

QGraphicsScale::zScale

This property holds the depth scale factor. The scale factor can be any real number and the default value is 1.0. If you set the factor to 0.0 the item will be collapsed to a single point. If you provide a negative value, the item will be flipped end for end around its origin.

See also: xScale, yScale, origin

Properties	Class Methods
read	zScale
write	setZScale
notify	zScaleChanged

Public Signals

Public Methods

Properties

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Method Documentation

Property Documentation