The QGraphicsItemAnimation class provides simple animation support for QGraphicsItem. More...

#include <qgraphicsitemanimation.h>

Inheritance diagram for QGraphicsItemAnimation:

Collaboration diagram for QGraphicsItemAnimation:

Public Slots
void	setStep (qreal x)
	Sets the current step value for the animation, causing the transformations scheduled at this step to be performed.

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Public Member Functions
	QGraphicsItemAnimation (QObject *parent=nullptr)
	Constructs an animation object with the given parent.

virtual	~QGraphicsItemAnimation ()
	Destroys the animation object.

QGraphicsItem *	item () const
	Returns the item on which the animation object operates.

void	setItem (QGraphicsItem *item)
	Sets the specified item to be used in the animation.

QTimeLine *	timeLine () const
	Returns the timeline object used to control the rate at which the animation occurs.

void	setTimeLine (QTimeLine *timeLine)
	Sets the timeline object used to control the rate of animation to the timeLine specified.

QPointF	posAt (qreal step) const
	Returns the position of the item at the given step value.

QList< QPair< qreal, QPointF > >	posList () const
	Returns all explicitly inserted positions.

void	setPosAt (qreal step, const QPointF &pos)
	Sets the position of the item at the given step value to the point specified.

QTransform	transformAt (qreal step) const
	Returns the transform used for the item at the specified step value.

qreal	rotationAt (qreal step) const
	Returns the angle at which the item is rotated at the specified step value.

QList< QPair< qreal, qreal > >	rotationList () const
	Returns all explicitly inserted rotations.

void	setRotationAt (qreal step, qreal angle)
	Sets the rotation of the item at the given step value to the angle specified.

qreal	xTranslationAt (qreal step) const
	Returns the horizontal translation of the item at the specified step value.

qreal	yTranslationAt (qreal step) const
	Returns the vertical translation of the item at the specified step value.

QList< QPair< qreal, QPointF > >	translationList () const
	Returns all explicitly inserted translations.

void	setTranslationAt (qreal step, qreal dx, qreal dy)
	Sets the translation of the item at the given step value using the horizontal and vertical coordinates specified by dx and dy.

qreal	verticalScaleAt (qreal step) const
	Returns the vertical scale for the item at the specified step value.

qreal	horizontalScaleAt (qreal step) const
	Returns the horizontal scale for the item at the specified step value.

QList< QPair< qreal, QPointF > >	scaleList () const
	Returns all explicitly inserted scales.

void	setScaleAt (qreal step, qreal sx, qreal sy)
	Sets the scale of the item at the given step value using the horizontal and vertical scale factors specified by sx and sy.

qreal	verticalShearAt (qreal step) const
	Returns the vertical shear for the item at the specified step value.

qreal	horizontalShearAt (qreal step) const
	Returns the horizontal shear for the item at the specified step value.

QList< QPair< qreal, QPointF > >	shearList () const
	Returns all explicitly inserted shears.

void	setShearAt (qreal step, qreal sh, qreal sv)
	Sets the shear of the item at the given step value using the horizontal and vertical shear factors specified by sh and sv.

void	clear ()
	Clears the scheduled transformations used for the animation, but retains the item and timeline.

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

virtual	~QObject ()
	Destroys the object, deleting all its child objects.

virtual bool	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.

bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).

QThread *	thread () const
	Returns the thread in which the object lives.

bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

void	killTimer (Qt::TimerId id)

template<typename T >
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.

template<typename T >
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const QObjectList &	children () const
	Returns a list of child objects.

void	setParent (QObject *parent)
	Makes the object a child of parent.

void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.

void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.

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
	Dumps a tree of children to the debug output.

void	dumpObjectInfo () const
	Dumps information about signal connections, etc.

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.

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

QVariant	property (const char *name) const
	Returns the value of the object's name property.

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const
	Returns a pointer to the parent object.

bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Protected Member Functions
virtual void	beforeAnimationStep (qreal step)
	This method is meant to be overridden by subclassed that needs to execute additional code before a new step takes place.

virtual void	afterAnimationStep (qreal step)
	This method is meant to be overridden in subclasses that need to execute additional code after a new step has taken place.

Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.

int	senderSignalIndex () const

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

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

Additional Inherited Members
Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

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)
	\threadsafe

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::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

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

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

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

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a 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 Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

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

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

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

The QGraphicsItemAnimation class provides simple animation support for QGraphicsItem.

Since: 4.2

\inmodule QtWidgets

Deprecated

The QGraphicsItemAnimation class animates a QGraphicsItem. You can schedule changes to the item's transformation matrix at specified steps. The QGraphicsItemAnimation class has a current step value. When this value changes the transformations scheduled at that step are performed. The current step of the animation is set with the setStep() function.

QGraphicsItemAnimation will do a simple linear interpolation between the nearest adjacent scheduled changes to calculate the matrix. For instance, if you set the position of an item at values 0.0 and 1.0, the animation will show the item moving in a straight line between these positions. The same is true for scaling and rotation.

It is usual to use the class with a QTimeLine. The timeline's \l{QTimeLine::}{valueChanged()} signal is then connected to the setStep() slot. For example, you can set up an item for rotation by calling setRotationAt() for different step values. The animations timeline is set with the setTimeLine() function.

An example animation with a timeline follows:

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);
 
    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);
 
    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);
 
    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));
 
    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);
 
    QGraphicsView *view = new QGraphicsView(scene);
    view->show();
 
    timer->start();

Note that steps lie between 0.0 and 1.0. It may be necessary to use \l{QTimeLine::}{setUpdateInterval()}. The default update interval is 40 ms. A scheduled transformation cannot be removed when set, so scheduling several transformations of the same kind (e.g., rotations) at the same step is not recommended.

See also: QTimeLine, {Graphics View Framework}

Definition at line 20 of file qgraphicsitemanimation.h.

Constructor & Destructor Documentation

◆ QGraphicsItemAnimation()

QGraphicsItemAnimation::QGraphicsItemAnimation ( QObject * parent = nullptr )

Constructs an animation object with the given parent.

Definition at line 157 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::q.

◆ ~QGraphicsItemAnimation()

QGraphicsItemAnimation::~QGraphicsItemAnimation ( )

virtual

Destroys the animation object.

Definition at line 166 of file qgraphicsitemanimation.cpp.

Member Function Documentation

◆ afterAnimationStep()

void QGraphicsItemAnimation::afterAnimationStep ( qreal step )

protectedvirtual

This method is meant to be overridden in subclasses that need to execute additional code after a new step has taken place.

The animation step is provided for use in cases where the action depends on its value.

Definition at line 540 of file qgraphicsitemanimation.cpp.

References Q_UNUSED.

Referenced by setStep().

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◆ beforeAnimationStep()

void QGraphicsItemAnimation::beforeAnimationStep ( qreal step )

protectedvirtual

This method is meant to be overridden by subclassed that needs to execute additional code before a new step takes place.

The animation step is provided for use in cases where the action depends on its value.

Definition at line 527 of file qgraphicsitemanimation.cpp.

References Q_UNUSED.

Referenced by setStep().

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◆ clear()

void QGraphicsItemAnimation::clear ( )

Clears the scheduled transformations used for the animation, but retains the item and timeline.

Definition at line 475 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::horizontalScale, QGraphicsItemAnimationPrivate::horizontalShear, QGraphicsItemAnimationPrivate::rotation, QGraphicsItemAnimationPrivate::verticalScale, QGraphicsItemAnimationPrivate::verticalShear, QGraphicsItemAnimationPrivate::xPosition, QGraphicsItemAnimationPrivate::xTranslation, QGraphicsItemAnimationPrivate::yPosition, and QGraphicsItemAnimationPrivate::yTranslation.

◆ horizontalScaleAt()

qreal QGraphicsItemAnimation::horizontalScaleAt ( qreal step ) const

Returns the horizontal scale for the item at the specified step value.

See also: setScaleAt()

Definition at line 387 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::horizontalScale, and QGraphicsItemAnimationPrivate::linearValueForStep().

Referenced by transformAt().

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◆ horizontalShearAt()

qreal QGraphicsItemAnimation::horizontalShearAt ( qreal step ) const

Returns the horizontal shear for the item at the specified step value.

See also: setShearAt()

Definition at line 437 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::horizontalShear, and QGraphicsItemAnimationPrivate::linearValueForStep().

Referenced by transformAt().

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◆ item()

QGraphicsItem * QGraphicsItemAnimation::item ( ) const

Returns the item on which the animation object operates.

See also: setItem()

Definition at line 176 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::item.

Referenced by setItem().

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◆ posAt()

QPointF QGraphicsItemAnimation::posAt ( qreal step ) const

Returns the position of the item at the given step value.

See also: setPosAt()

Definition at line 226 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::linearValueForStep(), QGraphicsItemAnimationPrivate::startPos, QPointF::x(), QGraphicsItemAnimationPrivate::xPosition, QPointF::y(), and QGraphicsItemAnimationPrivate::yPosition.

Referenced by setStep().

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◆ posList()

QList< QPair< qreal, QPointF > > QGraphicsItemAnimation::posList ( ) const

Returns all explicitly inserted positions.

See also: posAt(), setPosAt()

Definition at line 251 of file qgraphicsitemanimation.cpp.

References i, list, QList< T >::reserve(), QGraphicsItemAnimationPrivate::xPosition, and QGraphicsItemAnimationPrivate::yPosition.

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◆ rotationAt()

qreal QGraphicsItemAnimation::rotationAt ( qreal step ) const

Returns the angle at which the item is rotated at the specified step value.

See also: setRotationAt()

Definition at line 288 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::linearValueForStep(), and QGraphicsItemAnimationPrivate::rotation.

Referenced by transformAt().

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◆ rotationList()

QList< QPair< qreal, qreal > > QGraphicsItemAnimation::rotationList ( ) const

Returns all explicitly inserted rotations.

See also: rotationAt(), setRotationAt()

Definition at line 309 of file qgraphicsitemanimation.cpp.

References i, list, QList< T >::reserve(), and QGraphicsItemAnimationPrivate::rotation.

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◆ scaleList()

QList< QPair< qreal, QPointF > > QGraphicsItemAnimation::scaleList ( ) const

Returns all explicitly inserted scales.

See also: verticalScaleAt(), horizontalScaleAt(), setScaleAt()

Definition at line 410 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::horizontalScale, i, list, QList< T >::reserve(), and QGraphicsItemAnimationPrivate::verticalScale.

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◆ setItem()

void QGraphicsItemAnimation::setItem ( QGraphicsItem * item )

Sets the specified item to be used in the animation.

See also: item()

Definition at line 186 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::item, item(), QGraphicsItem::pos(), and QGraphicsItemAnimationPrivate::startPos.

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◆ setPosAt()

void QGraphicsItemAnimation::setPosAt	(	qreal	step,
		const QPointF &	point )

Sets the position of the item at the given step value to the point specified.

See also: posAt()

Definition at line 240 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::insertUniquePair(), pos, QGraphicsItemAnimationPrivate::xPosition, and QGraphicsItemAnimationPrivate::yPosition.

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◆ setRotationAt()

void QGraphicsItemAnimation::setRotationAt	(	qreal	step,
		qreal	angle )

Sets the rotation of the item at the given step value to the angle specified.

See also: rotationAt()

Definition at line 299 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::insertUniquePair(), and QGraphicsItemAnimationPrivate::rotation.

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◆ setScaleAt()

void QGraphicsItemAnimation::setScaleAt	(	qreal	step,
		qreal	sx,
		qreal	sy )

Sets the scale of the item at the given step value using the horizontal and vertical scale factors specified by sx and sy.

See also: verticalScaleAt(), horizontalScaleAt()

Definition at line 399 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::horizontalScale, QGraphicsItemAnimationPrivate::insertUniquePair(), and QGraphicsItemAnimationPrivate::verticalScale.

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◆ setShearAt()

void QGraphicsItemAnimation::setShearAt	(	qreal	step,
		qreal	sh,
		qreal	sv )

Sets the shear of the item at the given step value using the horizontal and vertical shear factors specified by sh and sv.

See also: verticalShearAt(), horizontalShearAt()

Definition at line 449 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::horizontalShear, QGraphicsItemAnimationPrivate::insertUniquePair(), and QGraphicsItemAnimationPrivate::verticalShear.

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◆ setStep

void QGraphicsItemAnimation::setStep ( qreal x )

slot

Sets the current step value for the animation, causing the transformations scheduled at this step to be performed.

Definition at line 494 of file qgraphicsitemanimation.cpp.

Referenced by setTimeLine().

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◆ setTimeLine()

void QGraphicsItemAnimation::setTimeLine ( QTimeLine * timeLine )

Sets the timeline object used to control the rate of animation to the timeLine specified.

See also: timeLine()

Definition at line 209 of file qgraphicsitemanimation.cpp.

References QObject::connect(), setStep(), SIGNAL, SLOT, QGraphicsItemAnimationPrivate::timeLine, and timeLine().

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◆ setTranslationAt()

void QGraphicsItemAnimation::setTranslationAt	(	qreal	step,
		qreal	dx,
		qreal	dy )

Sets the translation of the item at the given step value using the horizontal and vertical coordinates specified by dx and dy.

See also: xTranslationAt(), yTranslationAt()

Definition at line 348 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::insertUniquePair(), QGraphicsItemAnimationPrivate::xTranslation, and QGraphicsItemAnimationPrivate::yTranslation.

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◆ shearList()

QList< QPair< qreal, QPointF > > QGraphicsItemAnimation::shearList ( ) const

Returns all explicitly inserted shears.

See also: verticalShearAt(), horizontalShearAt(), setShearAt()

Definition at line 460 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::horizontalShear, i, list, QList< T >::reserve(), and QGraphicsItemAnimationPrivate::verticalShear.

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◆ timeLine()

QTimeLine * QGraphicsItemAnimation::timeLine ( ) const

Returns the timeline object used to control the rate at which the animation occurs.

See also: setTimeLine()

Definition at line 198 of file qgraphicsitemanimation.cpp.

References QGraphicsItemAnimationPrivate::timeLine.

Referenced by setTimeLine().

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◆ transformAt()

QTransform QGraphicsItemAnimation::transformAt ( qreal step ) const

Returns the transform used for the item at the specified step value.

Since: 5.14

Definition at line 267 of file qgraphicsitemanimation.cpp.

References check_step_valid(), horizontalScaleAt(), horizontalShearAt(), QTransform::rotate(), QGraphicsItemAnimationPrivate::rotation, rotationAt(), QTransform::scale(), QTransform::shear(), QTransform::translate(), QGraphicsItemAnimationPrivate::verticalScale, verticalScaleAt(), QGraphicsItemAnimationPrivate::verticalShear, verticalShearAt(), QGraphicsItemAnimationPrivate::xTranslation, xTranslationAt(), and yTranslationAt().

Referenced by setStep().

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◆ translationList()

QList< QPair< qreal, QPointF > > QGraphicsItemAnimation::translationList ( ) const

Returns all explicitly inserted translations.

See also: xTranslationAt(), yTranslationAt(), setTranslationAt()

Definition at line 359 of file qgraphicsitemanimation.cpp.

References i, list, QList< T >::reserve(), QGraphicsItemAnimationPrivate::xTranslation, and QGraphicsItemAnimationPrivate::yTranslation.

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◆ verticalScaleAt()

qreal QGraphicsItemAnimation::verticalScaleAt ( qreal step ) const

Returns the vertical scale for the item at the specified step value.

See also: setScaleAt()

Definition at line 375 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::linearValueForStep(), and QGraphicsItemAnimationPrivate::verticalScale.

Referenced by transformAt().

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◆ verticalShearAt()

qreal QGraphicsItemAnimation::verticalShearAt ( qreal step ) const

Returns the vertical shear for the item at the specified step value.

See also: setShearAt()

Definition at line 426 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::linearValueForStep(), and QGraphicsItemAnimationPrivate::verticalShear.

Referenced by transformAt().

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◆ xTranslationAt()

qreal QGraphicsItemAnimation::xTranslationAt ( qreal step ) const

Returns the horizontal translation of the item at the specified step value.

See also: setTranslationAt()

Definition at line 325 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::linearValueForStep(), and QGraphicsItemAnimationPrivate::xTranslation.

Referenced by transformAt().

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◆ yTranslationAt()

qreal QGraphicsItemAnimation::yTranslationAt ( qreal step ) const

Returns the vertical translation of the item at the specified step value.

See also: setTranslationAt()

Definition at line 336 of file qgraphicsitemanimation.cpp.

References check_step_valid(), QGraphicsItemAnimationPrivate::linearValueForStep(), and QGraphicsItemAnimationPrivate::yTranslation.

Referenced by transformAt().

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

qtbase/src/widgets/graphicsview/qgraphicsitemanimation.h (05fc3aef53348fb58be6308076e000825b704e58)
qtbase/src/widgets/graphicsview/qgraphicsitemanimation.cpp (05fc3aef53348fb58be6308076e000825b704e58)

Public Slots

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QGraphicsItemAnimation()

◆ ~QGraphicsItemAnimation()

Member Function Documentation

◆ afterAnimationStep()

◆ beforeAnimationStep()

◆ clear()

◆ horizontalScaleAt()

◆ horizontalShearAt()

◆ item()

◆ posAt()

◆ posList()

◆ rotationAt()

◆ rotationList()

◆ scaleList()

◆ setItem()

◆ setPosAt()

◆ setRotationAt()

◆ setScaleAt()

◆ setShearAt()

◆ setStep

◆ setTimeLine()

◆ setTranslationAt()

◆ shearList()

◆ timeLine()

◆ transformAt()

◆ translationList()

◆ verticalScaleAt()

◆ verticalShearAt()

◆ xTranslationAt()

◆ yTranslationAt()