Inheritance diagram for QDeclarativeParentChangePrivate:

Public Functions
void	doChange (QDeclarativeItem targetParent, QDeclarativeItem stackBefore=0)

	QDeclarativeParentChangePrivate ()

Public Functions inherited from QDeclarativeStateOperationPrivate
	QDeclarativeStateOperationPrivate ()

Public Functions inherited from QObjectPrivate
void	_q_reregisterTimers (void *pointer)

void	addConnection (int signal, Connection *c)

void	cleanConnectionLists ()

void	connectNotify (const char *signal)

void	deleteChildren ()

void	disconnectNotify (const char *signal)

bool	isSender (const QObject receiver, const char signal) const

bool	isSignalConnected (uint signalIdx) const
	Returns true if the signal with index signal_index from object sender is connected. More...

void	moveToThread_helper ()

	QObjectPrivate (int version=QObjectPrivateVersion)

QObjectList	receiverList (const char *signal) const

QObjectList	senderList () const

void	setParent_helper (QObject *)

void	setThreadData_helper (QThreadData currentData, QThreadData targetData)

int	signalIndex (const char *signalName) const
	Returns the signal index used in the internal connectionLists vector. More...

virtual	~QObjectPrivate ()

Public Functions inherited from QObjectData
virtual	~QObjectData ()=0

Public Variables
QDeclarativeNullableValue< qreal >	height

QDeclarativeNullableValue< QDeclarativeScriptString >	heightString

QDeclarativeGuard< QDeclarativeItem >	origParent

QDeclarativeGuard< QDeclarativeItem >	origStackBefore

QDeclarativeGuard< QDeclarativeItem >	parent

QDeclarativeItem *	rewindParent

QDeclarativeItem *	rewindStackBefore

QDeclarativeNullableValue< qreal >	rotation

QDeclarativeNullableValue< QDeclarativeScriptString >	rotationString

QDeclarativeNullableValue< qreal >	scale

QDeclarativeNullableValue< QDeclarativeScriptString >	scaleString

QDeclarativeItem *	target

QDeclarativeNullableValue< qreal >	width

QDeclarativeNullableValue< QDeclarativeScriptString >	widthString

QDeclarativeNullableValue< qreal >	x

QDeclarativeNullableValue< QDeclarativeScriptString >	xString

QDeclarativeNullableValue< qreal >	y

QDeclarativeNullableValue< QDeclarativeScriptString >	yString

Public Variables inherited from QDeclarativeStateOperationPrivate
QDeclarativeState *	m_state

Public Variables inherited from QObjectPrivate
union {
QObject * currentChildBeingDeleted

QAbstractDeclarativeData * declarativeData

};

quint32	connectedSignals [2]

QObjectConnectionListVector *	connectionLists

Sender *	currentSender

QList< QPointer< QObject > >	eventFilters

ExtraData *	extraData

QString	objectName

Connection *	senders

QAtomicPointer< QtSharedPointer::ExternalRefCountData >	sharedRefcount

QThreadData *	threadData

void *	unused

Public Variables inherited from QObjectData
uint	blockSig: 1

QObjectList	children

uint	hasGuards: 1

uint	inEventHandler: 1

uint	inThreadChangeEvent: 1

uint	isWidget: 1

QMetaObject *	metaObject

uint	ownObjectName: 1

QObject *	parent

uint	pendTimer: 1

int	postedEvents

QObject *	q_ptr

uint	receiveChildEvents: 1

uint	sendChildEvents: 1

uint	unused: 22

uint	wasDeleted: 1

Additional Inherited Members
Public Types inherited from QObjectPrivate
typedef void(*	StaticMetaCallFunction) (QObject , QMetaObject::Call, int, void *)

Static Public Functions inherited from QObjectPrivate
static void	clearGuards (QObject *)

static QObjectPrivate *	get (QObject *o)

static void	resetCurrentSender (QObject receiver, Sender currentSender, Sender *previousSender)

static Sender *	setCurrentSender (QObject receiver, Sender sender)

static void	signalSignature (const QMetaMethod &signal, QVarLengthArray< char > *result)

Detailed Description

Definition at line 72 of file qdeclarativestateoperations.cpp.

Constructors and Destructors

◆ QDeclarativeParentChangePrivate()

QDeclarativeParentChangePrivate::QDeclarativeParentChangePrivate ( )

inline

Definition at line 76 of file qdeclarativestateoperations.cpp.

76 : target(0), parent(0), origParent(0), origStackBefore(0),

77 rewindParent(0), rewindStackBefore(0) {}

QDeclarativeParentChangePrivate::parent

QDeclarativeGuard< QDeclarativeItem > parent

Definition: qdeclarativestateoperations.cpp:80

QDeclarativeParentChangePrivate::target

QDeclarativeItem * target

Definition: qdeclarativestateoperations.cpp:79

QDeclarativeParentChangePrivate::origParent

QDeclarativeGuard< QDeclarativeItem > origParent

Definition: qdeclarativestateoperations.cpp:81

QDeclarativeParentChangePrivate::rewindParent

QDeclarativeItem * rewindParent

Definition: qdeclarativestateoperations.cpp:83

QDeclarativeParentChangePrivate::rewindStackBefore

QDeclarativeItem * rewindStackBefore

Definition: qdeclarativestateoperations.cpp:84

QDeclarativeParentChangePrivate::origStackBefore

QDeclarativeGuard< QDeclarativeItem > origStackBefore

Definition: qdeclarativestateoperations.cpp:82

Functions

◆ doChange()

void QDeclarativeParentChangePrivate::doChange	(	QDeclarativeItem *	targetParent,
		QDeclarativeItem *	stackBefore = `0`
	)

Definition at line 103 of file qdeclarativestateoperations.cpp.

 {
     if (targetParent && target && target->parentItem()) {
         Q_Q(QDeclarativeParentChange);
         bool ok;
         const QTransform &transform = target->parentItem()->itemTransform(targetParent, &ok);
         if (transform.type() >= QTransform::TxShear || !ok) {
             qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under complex transform");
             ok = false;
         }
 
         qreal scale = 1;
         qreal rotation = 0;
         bool isRotate = (transform.type() == QTransform::TxRotate) || (transform.m11() < 0);
         if (ok && !isRotate) {
             if (transform.m11() == transform.m22())
                 scale = transform.m11();
             else {
                 qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under non-uniform scale");
                 ok = false;
             }
         } else if (ok && isRotate) {
             if (transform.m11() == transform.m22())
                 scale = qSqrt(transform.m11()*transform.m11() + transform.m12()*transform.m12());
             else {
                 qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under non-uniform scale");
                 ok = false;
             }
 
             if (scale != 0)
                 rotation = atan2(transform.m12()/scale, transform.m11()/scale) * 180/qreal(M_PI);
             else {
                 qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under scale of 0");
                 ok = false;
             }
         }
 
         const QPointF &point = transform.map(QPointF(target->x(),target->y()));
         qreal x = point.x();
         qreal y = point.y();
 
         // setParentItem will update the transformOriginPoint if needed
         target->setParentItem(targetParent);
 
         if (ok && target->transformOrigin() != QDeclarativeItem::TopLeft) {
             qreal tempxt = target->transformOriginPoint().x();
             qreal tempyt = target->transformOriginPoint().y();
             QTransform t;
             t.translate(-tempxt, -tempyt);
             t.rotate(rotation);
             t.scale(scale, scale);
             t.translate(tempxt, tempyt);
             const QPointF &offset = t.map(QPointF(0,0));
             x += offset.x();
             y += offset.y();
         }
 
         if (ok) {
             //qDebug() << x << y << rotation << scale;
             target->setX(x);
             target->setY(y);
             target->setRotation(target->rotation() + rotation);
             target->setScale(target->scale() * scale);
         }
     } else if (target) {
         target->setParentItem(targetParent);
     }
 
     //restore the original stack position.
     //### if stackBefore has also been reparented this won't work
     if (stackBefore)
         target->stackBefore(stackBefore);
 }