#include <qquickstateoperations_p.h>

Inheritance diagram for QQuickParentChange:

Collaboration diagram for QQuickParentChange:

Public Member Functions
	QQuickParentChange (QObject *parent=nullptr)
	\qmltype ParentChange \nativetype 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)
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	isQmlObjectType () const
	Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
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`.
Public Member Functions inherited from QQuickStateActionEvent
virtual	~QQuickStateActionEvent ()
virtual bool	needsCopy ()
virtual void	copyOriginals (QQuickStateActionEvent *)
virtual bool	isRewindable ()
virtual void	saveTargetValues ()
virtual bool	changesBindings ()
virtual void	clearBindings ()

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 29 of file qquickstateoperations_p.h.

Constructor & Destructor Documentation

◆ QQuickParentChange()

QQuickParentChange::QQuickParentChange ( QObject * parent = nullptr )

\qmltype ParentChange \nativetype 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 145 of file qquickstateoperations.cpp.

Member Function Documentation

◆ actions()

QQuickStateOperation::ActionList QQuickParentChange::actions ( )

overridevirtual

Reimplemented from QQuickStateOperation.

Definition at line 306 of file qquickstateoperations.cpp.

◆ execute()

void QQuickParentChange::execute ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 442 of file qquickstateoperations.cpp.

◆ height()

QQmlScriptString QQuickParentChange::height ( ) const

Definition at line 214 of file qquickstateoperations.cpp.

◆ heightIsSet()

bool QQuickParentChange::heightIsSet ( ) const

Definition at line 226 of file qquickstateoperations.cpp.

◆ isReversable()

bool QQuickParentChange::isReversable ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 448 of file qquickstateoperations.cpp.

◆ mayOverride()

bool QQuickParentChange::mayOverride ( QQuickStateActionEvent * other )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 482 of file qquickstateoperations.cpp.

◆ object()

QQuickItem * QQuickParentChange::object ( ) const

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

Definition at line 278 of file qquickstateoperations.cpp.

◆ originalParent()

QQuickItem * QQuickParentChange::originalParent ( ) const

Definition at line 268 of file qquickstateoperations.cpp.

◆ 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 294 of file qquickstateoperations.cpp.

◆ reverse()

void QQuickParentChange::reverse ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 471 of file qquickstateoperations.cpp.

◆ rewind()

void QQuickParentChange::rewind ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 523 of file qquickstateoperations.cpp.

◆ rotation()

QQmlScriptString QQuickParentChange::rotation ( ) const

Definition at line 250 of file qquickstateoperations.cpp.

◆ rotationIsSet()

bool QQuickParentChange::rotationIsSet ( ) const

Definition at line 262 of file qquickstateoperations.cpp.

◆ saveCurrentValues()

void QQuickParentChange::saveCurrentValues ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 492 of file qquickstateoperations.cpp.

◆ saveOriginals()

void QQuickParentChange::saveOriginals ( )

overridevirtual

Reimplemented from QQuickStateActionEvent.

Definition at line 433 of file qquickstateoperations.cpp.

◆ scale()

QQmlScriptString QQuickParentChange::scale ( ) const

Definition at line 232 of file qquickstateoperations.cpp.

◆ scaleIsSet()

bool QQuickParentChange::scaleIsSet ( ) const

Definition at line 244 of file qquickstateoperations.cpp.

◆ setHeight()

void QQuickParentChange::setHeight ( const QQmlScriptString & height )

Definition at line 220 of file qquickstateoperations.cpp.

◆ setObject()

void QQuickParentChange::setObject ( QQuickItem * target )

Definition at line 284 of file qquickstateoperations.cpp.

◆ setParent()

void QQuickParentChange::setParent ( QQuickItem * parent )

Definition at line 300 of file qquickstateoperations.cpp.

◆ setRotation()

void QQuickParentChange::setRotation ( const QQmlScriptString & rotation )

Definition at line 256 of file qquickstateoperations.cpp.

◆ setScale()

void QQuickParentChange::setScale ( const QQmlScriptString & scale )

Definition at line 238 of file qquickstateoperations.cpp.

◆ setWidth()

void QQuickParentChange::setWidth ( const QQmlScriptString & width )

Definition at line 202 of file qquickstateoperations.cpp.

◆ setX()

void QQuickParentChange::setX ( const QQmlScriptString & x )

Definition at line 166 of file qquickstateoperations.cpp.

◆ setY()

void QQuickParentChange::setY ( const QQmlScriptString & y )

Definition at line 184 of file qquickstateoperations.cpp.

◆ type()

QQuickStateActionEvent::EventType QQuickParentChange::type ( ) const

overridevirtual

Implements QQuickStateActionEvent.

Definition at line 477 of file qquickstateoperations.cpp.

◆ width()

QQmlScriptString QQuickParentChange::width ( ) const

Definition at line 196 of file qquickstateoperations.cpp.

◆ widthIsSet()

bool QQuickParentChange::widthIsSet ( ) const

Definition at line 208 of file qquickstateoperations.cpp.

◆ 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 160 of file qquickstateoperations.cpp.

◆ xIsSet()

bool QQuickParentChange::xIsSet ( ) const

Definition at line 172 of file qquickstateoperations.cpp.

◆ y()

QQmlScriptString QQuickParentChange::y ( ) const

Definition at line 178 of file qquickstateoperations.cpp.

◆ yIsSet()

bool QQuickParentChange::yIsSet ( ) const

Definition at line 190 of file qquickstateoperations.cpp.

Property Documentation

◆ height

QQmlScriptString QQuickParentChange::height

readwrite

Definition at line 39 of file qquickstateoperations_p.h.

◆ parent

QQuickItem * QQuickParentChange::parent

readwrite

Definition at line 35 of file qquickstateoperations_p.h.

◆ rotation

QQmlScriptString QQuickParentChange::rotation

readwrite

Definition at line 41 of file qquickstateoperations_p.h.

◆ scale

QQmlScriptString QQuickParentChange::scale

readwrite

Definition at line 40 of file qquickstateoperations_p.h.

◆ target

QQuickItem * QQuickParentChange::target

readwrite

Definition at line 34 of file qquickstateoperations_p.h.

◆ width

QQmlScriptString QQuickParentChange::width

readwrite

Definition at line 38 of file qquickstateoperations_p.h.

◆ x

QQmlScriptString QQuickParentChange::x

readwrite

Definition at line 36 of file qquickstateoperations_p.h.

◆ y

QQmlScriptString QQuickParentChange::y

readwrite

Definition at line 37 of file qquickstateoperations_p.h.

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

qtdeclarative/src/quick/items/qquickstateoperations_p.h (01cd43d30e3ca2c4dd94a4a4711604adb9417517)
qtdeclarative/src/quick/items/qquickstateoperations.cpp (01cd43d30e3ca2c4dd94a4a4711604adb9417517)

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