#include <qquickstateoperations_p.h>

Inheritance diagram for QQuickParentChange:

Collaboration diagram for QQuickParentChange:

Public Member Functions
	QQuickParentChange (QObject *parent=nullptr)
	\qmltype ParentChange \instantiates QQuickParentChange \inqmlmodule QtQuick

QQuickItem *	object () const
	\qmlproperty Item QtQuick::ParentChange::target This property holds the item to be reparented

void	setObject (QQuickItem *)

QQuickItem *	parent () const
	\qmlproperty Item QtQuick::ParentChange::parent This property holds the new parent for the item in this state.

void	setParent (QQuickItem *)

QQuickItem *	originalParent () const

QQmlScriptString	x () const
	\qmlproperty real QtQuick::ParentChange::x \qmlproperty real QtQuick::ParentChange::y \qmlproperty real QtQuick::ParentChange::width \qmlproperty real QtQuick::ParentChange::height \qmlproperty real QtQuick::ParentChange::scale \qmlproperty real QtQuick::ParentChange::rotation These properties hold the new position, size, scale, and rotation for the item in this state.

void	setX (const QQmlScriptString &x)

bool	xIsSet () const

QQmlScriptString	y () const

void	setY (const QQmlScriptString &y)

bool	yIsSet () const

QQmlScriptString	width () const

void	setWidth (const QQmlScriptString &width)

bool	widthIsSet () const

QQmlScriptString	height () const

void	setHeight (const QQmlScriptString &height)

bool	heightIsSet () const

QQmlScriptString	scale () const

void	setScale (const QQmlScriptString &scale)

bool	scaleIsSet () const

QQmlScriptString	rotation () const

void	setRotation (const QQmlScriptString &rotation)

bool	rotationIsSet () const

ActionList	actions () override

void	saveOriginals () override

void	execute () override

bool	isReversable () override

void	reverse () override

EventType	type () const override

bool	mayOverride (QQuickStateActionEvent *other) override

void	rewind () override

void	saveCurrentValues () override

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

virtual ActionList	actions ()

QQuickState *	state () const

void	setState (QQuickState *state)

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.

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children.

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::milliseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

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

template<typename T >
T	findChild (const QString &aName=QString(), 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 (const QString &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 >
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`.

Public Member Functions inherited from QQuickStateActionEvent
virtual	~QQuickStateActionEvent ()

virtual EventType	type () const =0

virtual void	execute ()

virtual bool	isReversable ()

virtual void	reverse ()

virtual void	saveOriginals ()

virtual bool	needsCopy ()

virtual void	copyOriginals (QQuickStateActionEvent *)

virtual bool	isRewindable ()

virtual void	rewind ()

virtual void	saveCurrentValues ()

virtual void	saveTargetValues ()

virtual bool	changesBindings ()

virtual void	clearBindings ()

virtual bool	mayOverride (QQuickStateActionEvent *other)

Properties
QQuickItem *	target

QQuickItem *	parent

QQmlScriptString	x

QQmlScriptString	y

QQmlScriptString	width

QQmlScriptString	height

QQmlScriptString	scale

QQmlScriptString	rotation

Properties inherited from QObject
QString	objectName
	the name of this object

Additional Inherited Members
Public Types inherited from QQuickStateOperation
typedef QList< QQuickStateAction >	ActionList

Public Types inherited from QQuickStateActionEvent
enum	EventType { Script , SignalHandler , ParentChange , AnchorChanges }

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

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 Member Functions inherited from QQuickStateOperation
	QQuickStateOperation (QObjectPrivate &dd, QObject *parent=nullptr)

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)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

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

Definition at line 28 of file qquickstateoperations_p.h.

Constructor & Destructor Documentation

◆ QQuickParentChange()

QQuickParentChange::QQuickParentChange ( QObject * parent = nullptr )

\qmltype ParentChange \instantiates QQuickParentChange \inqmlmodule QtQuick

Specifies how to reparent an Item in a state change.

ParentChange reparents an item while preserving its visual appearance (position, size, rotation, and scale) on screen. You can then specify a transition to move/resize/rotate/scale the item to its final intended appearance.

ParentChange can only preserve visual appearance if no complex transforms are involved. More specifically, it will not work if the transform property has been set for any items involved in the reparenting (i.e. items in the common ancestor tree for the original and new parent).

The example below displays a large red rectangle and a small blue rectangle, side by side. When the blueRect is clicked, it changes to the "reparented" state: its parent is changed to redRect and it is positioned at (10, 10) within the red rectangle, as specified in the ParentChange.

import QtQuick
 
Item {
    width: 200; height: 100
 
    Rectangle {
        id: redRect
        width: 100; height: 100
        color: "red"
    }
 
    Rectangle {
        id: blueRect
        x: redRect.width
        width: 50; height: 50
        color: "blue"
 
        states: State {
            name: "reparented"
            ParentChange { target: blueRect; parent: redRect; x: 10; y: 10 }
        }
 
        MouseArea { anchors.fill: parent; onClicked: blueRect.state = "reparented" }
    }
}

You can specify at which point in a transition you want a ParentChange to occur by using a ParentAnimation.

Note that unlike PropertyChanges, ParentChange expects an Item-based target; it will not work with arbitrary objects (for example, you couldn't use it to reparent a Timer).

Definition at line 141 of file qquickstateoperations.cpp.

Member Function Documentation

◆ actions()

QQuickStateOperation::ActionList QQuickParentChange::actions ( )

overridevirtual

Reimplemented from QQuickStateOperation.

Definition at line 302 of file qquickstateoperations.cpp.

References actions(), QQmlAnyBinding::createFromScriptString(), d, QQuickStateAction::deletableToBinding, QQuickStateAction::fromValue, ok, property, QQuickStateAction::property, qmlContext(), ra, QQmlProperty::read(), rotation, and QQuickStateAction::toBinding.

Referenced by actions(), and QQuickParentAnimation::transition().

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◆ execute()

void QQuickParentChange::execute ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 434 of file qquickstateoperations.cpp.

References d.

◆ height()

QQmlScriptString QQuickParentChange::height ( ) const

Definition at line 210 of file qquickstateoperations.cpp.

References d.

◆ heightIsSet()

bool QQuickParentChange::heightIsSet ( ) const

Definition at line 222 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ isReversable()

bool QQuickParentChange::isReversable ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 440 of file qquickstateoperations.cpp.

◆ mayOverride()

bool QQuickParentChange::mayOverride ( QQuickStateActionEvent * other )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 474 of file qquickstateoperations.cpp.

References d, other(), and QQuickStateActionEvent::ParentChange.

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◆ object()

QQuickItem * QQuickParentChange::object ( ) const

\qmlproperty Item QtQuick::ParentChange::target This property holds the item to be reparented

Definition at line 274 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ originalParent()

QQuickItem * QQuickParentChange::originalParent ( ) const

Definition at line 264 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ parent()

QQuickItem * QQuickParentChange::parent ( ) const

\qmlproperty Item QtQuick::ParentChange::parent This property holds the new parent for the item in this state.

Definition at line 290 of file qquickstateoperations.cpp.

References d.

◆ reverse()

void QQuickParentChange::reverse ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 463 of file qquickstateoperations.cpp.

References d.

◆ rewind()

void QQuickParentChange::rewind ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 515 of file qquickstateoperations.cpp.

References d.

◆ rotation()

QQmlScriptString QQuickParentChange::rotation ( ) const

Definition at line 246 of file qquickstateoperations.cpp.

References d.

◆ rotationIsSet()

bool QQuickParentChange::rotationIsSet ( ) const

Definition at line 258 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ saveCurrentValues()

void QQuickParentChange::saveCurrentValues ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 484 of file qquickstateoperations.cpp.

References QList< T >::at(), QObject::children(), d, and QList< T >::size().

Referenced by saveOriginals().

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◆ saveOriginals()

void QQuickParentChange::saveOriginals ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 425 of file qquickstateoperations.cpp.

References d, and saveCurrentValues().

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◆ scale()

QQmlScriptString QQuickParentChange::scale ( ) const

Definition at line 228 of file qquickstateoperations.cpp.

References d.

◆ scaleIsSet()

bool QQuickParentChange::scaleIsSet ( ) const

Definition at line 240 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ setHeight()

void QQuickParentChange::setHeight ( const QQmlScriptString & height )

Definition at line 216 of file qquickstateoperations.cpp.

References d, and height.

◆ setObject()

void QQuickParentChange::setObject ( QQuickItem * target )

Definition at line 280 of file qquickstateoperations.cpp.

References d, and target.

Referenced by QQuickParentAnimation::transition().

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◆ setParent()

void QQuickParentChange::setParent ( QQuickItem * parent )

Definition at line 296 of file qquickstateoperations.cpp.

References d, and parent.

Referenced by QQuickParentAnimation::transition().

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◆ setRotation()

void QQuickParentChange::setRotation ( const QQmlScriptString & rotation )

Definition at line 252 of file qquickstateoperations.cpp.

References d, and rotation.

◆ setScale()

void QQuickParentChange::setScale ( const QQmlScriptString & scale )

Definition at line 234 of file qquickstateoperations.cpp.

References d, and scale.

◆ setWidth()

void QQuickParentChange::setWidth ( const QQmlScriptString & width )

Definition at line 198 of file qquickstateoperations.cpp.

References d, and width.

◆ setX()

void QQuickParentChange::setX ( const QQmlScriptString & x )

Definition at line 162 of file qquickstateoperations.cpp.

References d, and x.

◆ setY()

void QQuickParentChange::setY ( const QQmlScriptString & y )

Definition at line 180 of file qquickstateoperations.cpp.

References d, and y.

◆ type()

QQuickStateActionEvent::EventType QQuickParentChange::type ( ) const

overridevirtual

Implements QQuickStateActionEvent.

Definition at line 469 of file qquickstateoperations.cpp.

References QQuickStateActionEvent::ParentChange.

◆ width()

QQmlScriptString QQuickParentChange::width ( ) const

Definition at line 192 of file qquickstateoperations.cpp.

References d.

◆ widthIsSet()

bool QQuickParentChange::widthIsSet ( ) const

Definition at line 204 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ x()

QQmlScriptString QQuickParentChange::x ( ) const

\qmlproperty real QtQuick::ParentChange::x \qmlproperty real QtQuick::ParentChange::y \qmlproperty real QtQuick::ParentChange::width \qmlproperty real QtQuick::ParentChange::height \qmlproperty real QtQuick::ParentChange::scale \qmlproperty real QtQuick::ParentChange::rotation These properties hold the new position, size, scale, and rotation for the item in this state.

Definition at line 156 of file qquickstateoperations.cpp.

References d.

◆ xIsSet()

bool QQuickParentChange::xIsSet ( ) const

Definition at line 168 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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◆ y()

QQmlScriptString QQuickParentChange::y ( ) const

Definition at line 174 of file qquickstateoperations.cpp.

References d.

◆ yIsSet()

bool QQuickParentChange::yIsSet ( ) const

Definition at line 186 of file qquickstateoperations.cpp.

References d.

Referenced by QQuickParentAnimation::transition().

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Property Documentation

◆ height

QQmlScriptString QQuickParentChange::height

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setHeight().

◆ parent

QQuickItem * QQuickParentChange::parent

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setParent(), and QQuickParentAnimation::transition().

◆ rotation

QQmlScriptString QQuickParentChange::rotation

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by actions(), and setRotation().

◆ scale

QQmlScriptString QQuickParentChange::scale

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setScale().

◆ target

QQuickItem * QQuickParentChange::target

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setObject().

◆ width

QQmlScriptString QQuickParentChange::width

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setWidth().

◆ x

QQmlScriptString QQuickParentChange::x

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setX().

◆ y

QQmlScriptString QQuickParentChange::y

readwrite

Definition at line 186 of file qquickstateoperations_p.h.

Referenced by setY().

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

qtdeclarative/src/quick/items/qquickstateoperations_p.h
qtdeclarative/src/quick/items/qquickstateoperations.cpp

Public Member Functions

Properties

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QQuickParentChange()

Member Function Documentation

◆ actions()

◆ execute()

◆ height()

◆ heightIsSet()

◆ isReversable()

◆ mayOverride()

◆ object()

◆ originalParent()

◆ parent()

◆ reverse()

◆ rewind()

◆ rotation()

◆ rotationIsSet()

◆ saveCurrentValues()

◆ saveOriginals()

◆ scale()

◆ scaleIsSet()

◆ setHeight()

◆ setObject()

◆ setParent()

◆ setRotation()

◆ setScale()

◆ setWidth()

◆ setX()

◆ setY()

◆ type()

◆ width()

◆ widthIsSet()

◆ x()

◆ xIsSet()

◆ y()

◆ yIsSet()

Property Documentation

◆ height

◆ parent

◆ rotation

◆ scale

◆ target

◆ width

◆ x

◆ y