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

#include <qgraphicstransform.h>

Inheritance diagram for QGraphicsScale:

Collaboration diagram for QGraphicsScale:

Signals
void	originChanged ()

void	xScaleChanged ()

void	yScaleChanged ()

void	zScaleChanged ()

void	scaleChanged ()

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

void	objectNameChanged (const QString &objectName, QPrivateSignal)

Public Member Functions
	QGraphicsScale (QObject *parent=nullptr)

	~QGraphicsScale ()

QVector3D	origin () const

void	setOrigin (const QVector3D &point)

qreal	xScale () const

void	setXScale (qreal)

qreal	yScale () const

void	setYScale (qreal)

qreal	zScale () const

void	setZScale (qreal)

void	applyTo (QMatrix4x4 *matrix) const override

Public Member Functions inherited from QGraphicsTransform
	QGraphicsTransform (QObject *parent=nullptr)

	~QGraphicsTransform ()

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)

virtual	~QObject ()

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

QString	objectName () const

void	setObjectName (const QString &name)

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const

bool	isWindowType () const

bool	signalsBlocked () const noexcept

bool	blockSignals (bool b) noexcept

QThread *	thread () const

void	moveToThread (QThread *thread)

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

void	killTimer (int id)

template<typename T >
T	findChild (const QString &aName=QString(), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

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

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

const QObjectList &	children () const

void	setParent (QObject *parent)

void	installEventFilter (QObject *filterObj)

void	removeEventFilter (QObject *obj)

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const

bool	disconnect (const QObject receiver, const char member=nullptr) const

void	dumpObjectTree () const

void	dumpObjectInfo () const

bool	setProperty (const char *name, const QVariant &value)

QVariant	property (const char *name) const

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const

bool	inherits (const char *classname) const

Properties
QVector3D	origin
	the origin of the scale in 3D space. More...

qreal	xScale
	the horizontal scale factor. More...

qreal	yScale
	the vertical scale factor. More...

qreal	zScale
	the depth scale factor. More...

Properties inherited from QObject
QString	objectName
	the name of this object More...

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

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)

static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)

static QMetaObject::Connection ::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 slot)

static QMetaObject::Connection ::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject context, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static std::enable_if< QtPrivate::FunctionPointer< Func2 >::ArgumentCount==-1 &&!std::is_convertible_v< Func2, const char * >, QMetaObject::Connection >::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 slot)

template<typename Func1 , typename Func2 >
static std::enable_if< QtPrivate::FunctionPointer< Func2 >::ArgumentCount==-1 &&!std::is_convertible_v< Func2, const char * >, QMetaObject::Connection >::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject context, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::Connection &)

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Protected Slots inherited from QGraphicsTransform
void	update ()

Protected Member Functions inherited from QGraphicsTransform
	QGraphicsTransform (QGraphicsTransformPrivate &p, QObject *parent)

Protected Member Functions inherited from QObject
QObject *	sender () const

int	senderSignalIndex () const

int	receivers (const char *signal) const

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)

virtual void	childEvent (QChildEvent *event)

virtual void	customEvent (QEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Related Functions inherited from QObject
template< class T > T	qobject_cast (const QObject *object)

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList

Detailed Description

The QGraphicsScale class provides a scale transformation.

Since: 4.6 \inmodule QtWidgets

QGraphicsScene 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()

Definition at line 79 of file qgraphicstransform.h.

Constructor & Destructor Documentation

◆ QGraphicsScale()

QGraphicsScale::QGraphicsScale ( QObject * parent = nullptr )

Constructs an empty QGraphicsScale object with the given parent.

Definition at line 216 of file qgraphicstransform.cpp.

◆ ~QGraphicsScale()

QGraphicsScale::~QGraphicsScale ( )

Destroys the graphics scale.

Definition at line 224 of file qgraphicstransform.cpp.

Member Function Documentation

◆ applyTo()

void QGraphicsScale::applyTo ( QMatrix4x4 * matrix ) const

overridevirtual

\reimp

Implements QGraphicsTransform.

Definition at line 336 of file qgraphicstransform.cpp.

◆ origin()

QVector3D QGraphicsScale::origin ( ) const

Definition at line 237 of file qgraphicstransform.cpp.

◆ originChanged

QGraphicsScale::originChanged ( )

signal

QGraphicsScale emits this signal when its origin changes.

See also: QGraphicsScale::origin

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◆ scaleChanged

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

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◆ setOrigin()

void QGraphicsScale::setOrigin ( const QVector3D & point )

Definition at line 242 of file qgraphicstransform.cpp.

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◆ setXScale()

void QGraphicsScale::setXScale ( qreal scale )

Definition at line 268 of file qgraphicstransform.cpp.

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◆ setYScale()

void QGraphicsScale::setYScale ( qreal scale )

Definition at line 295 of file qgraphicstransform.cpp.

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◆ setZScale()

void QGraphicsScale::setZScale ( qreal scale )

Definition at line 322 of file qgraphicstransform.cpp.

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◆ xScale()

qreal QGraphicsScale::xScale ( ) const

Definition at line 263 of file qgraphicstransform.cpp.

◆ xScaleChanged

QGraphicsScale::xScaleChanged ( )

signal

Since: 4.7

This signal is emitted whenever the \l xScale property changes.

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◆ yScale()

qreal QGraphicsScale::yScale ( ) const

Definition at line 290 of file qgraphicstransform.cpp.

◆ yScaleChanged

QGraphicsScale::yScaleChanged ( )

signal

Since: 4.7

This signal is emitted whenever the \l yScale property changes.

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◆ zScale()

qreal QGraphicsScale::zScale ( ) const

Definition at line 317 of file qgraphicstransform.cpp.

◆ zScaleChanged

QGraphicsScale::zScaleChanged ( )

signal

Since: 4.7

This signal is emitted whenever the \l zScale property changes.

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Property Documentation

◆ origin

QGraphicsScale::origin

readwrite

the origin of the scale in 3D space.

All scaling will be done relative to this point (i.e., this point will stay fixed, relative to the parent, when the item is scaled).

See also: xScale, yScale, zScale

Definition at line 73 of file qgraphicstransform.h.

◆ xScale

QGraphicsScale::xScale

readwrite

the horizontal scale factor.

The scale factor can be any real number; 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

Definition at line 73 of file qgraphicstransform.h.

◆ yScale

QGraphicsScale::yScale

readwrite

the vertical scale factor.

The scale factor can be any real number; 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

Definition at line 73 of file qgraphicstransform.h.

◆ zScale

QGraphicsScale::zScale

readwrite

the depth scale factor.

The scale factor can be any real number; 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

Definition at line 73 of file qgraphicstransform.h.

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

src/widgets/graphicsview/qgraphicstransform.h
src/widgets/graphicsview/qgraphicstransform.cpp

Signals

Public Member Functions

Properties

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QGraphicsScale()

◆ ~QGraphicsScale()

Member Function Documentation

◆ applyTo()

◆ origin()

◆ originChanged

◆ scaleChanged

◆ setOrigin()

◆ setXScale()

◆ setYScale()

◆ setZScale()

◆ xScale()

◆ xScaleChanged

◆ yScale()

◆ yScaleChanged

◆ zScale()

◆ zScaleChanged

Property Documentation

◆ origin

◆ xScale

◆ yScale

◆ zScale