QDeclarativeParentChange Class Reference

#include <qdeclarativestateoperations_p.h>

Inheritance diagram for QDeclarativeParentChange:

Public Functions
virtual ActionList	actions ()
virtual void	execute (Reason reason=ActualChange)
QDeclarativeScriptString	height () const
bool	heightIsSet () const
virtual bool	isReversable ()
QDeclarativeItem *	object () const
QDeclarativeItem *	originalParent () const
virtual bool	override (QDeclarativeActionEvent *other)
QDeclarativeItem *	parent () const
	QDeclarativeParentChange (QObject *parent=0)
virtual void	reverse (Reason reason=ActualChange)
virtual void	rewind ()
QDeclarativeScriptString	rotation () const
bool	rotationIsSet () const
virtual void	saveCurrentValues ()
virtual void	saveOriginals ()
QDeclarativeScriptString	scale () const
bool	scaleIsSet () const
void	setHeight (QDeclarativeScriptString height)
void	setObject (QDeclarativeItem *)
void	setParent (QDeclarativeItem *)
void	setRotation (QDeclarativeScriptString rotation)
void	setScale (QDeclarativeScriptString scale)
void	setWidth (QDeclarativeScriptString width)
void	setX (QDeclarativeScriptString x)
void	setY (QDeclarativeScriptString y)
virtual QString	typeName () const
QDeclarativeScriptString	width () const
bool	widthIsSet () const
QDeclarativeScriptString	x () const
bool	xIsSet () const
QDeclarativeScriptString	y () const
bool	yIsSet () const
	~QDeclarativeParentChange ()
Public Functions inherited from QDeclarativeStateOperation
	QDeclarativeStateOperation (QObject *parent=0)
void	setState (QDeclarativeState *state)
QDeclarativeState *	state () const
Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
const QObjectList &	children () const
	Returns a list of child objects. More...
bool	connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
bool	disconnect (const QObject *receiver, const char *member=0)
void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...
void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...
QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...
virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
virtual bool	eventFilter (QObject *, QEvent *)
	Filters events if this object has been installed as an event filter for the watched object. More...
template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
template<typename T >
QList< T >	findChildren (const QString &aName=QString()) 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. More...
template<typename T >
QList< T >	findChildren (const QRegExp &re) const
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. More...
void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...
bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...
void	killTimer (int id)
	Kills the timer with timer identifier, id. More...
virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...
void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...
QString	objectName () const
QObject *	parent () const
	Returns a pointer to the parent object. More...
QVariant	property (const char *name) const
	Returns the value of the object's name property. More...
Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...
void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...
void	setObjectName (const QString &name)
void	setParent (QObject *)
	Makes the object a child of parent. More...
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...
void	setUserData (uint id, QObjectUserData *data)
bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...
int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
QThread *	thread () const
	Returns the thread in which the object lives. More...
QObjectUserData *	userData (uint id) const
virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...
Public Functions inherited from QDeclarativeActionEvent
virtual bool	changesBindings ()
virtual void	clearBindings ()
virtual void	copyOriginals (QDeclarativeActionEvent *)
virtual bool	isRewindable ()
virtual bool	needsCopy ()
virtual void	saveTargetValues ()
virtual	~QDeclarativeActionEvent ()

Properties
QDeclarativeScriptString	height
QDeclarativeItem *	parent
QDeclarativeScriptString	rotation
QDeclarativeScriptString	scale
QDeclarativeItem *	target
QDeclarativeScriptString	width
QDeclarativeScriptString	x
QDeclarativeScriptString	y

Additional Inherited Members
Public Types inherited from QDeclarativeStateOperation
typedef QList< QDeclarativeAction >	ActionList
Public Types inherited from QDeclarativeActionEvent
enum	Reason { ActualChange, FastForward }
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...
Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
Static Public Functions inherited from QObject
static bool	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
static bool	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
static bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
	Disconnects signal in object sender from method in object receiver. More...
static bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static uint	registerUserData ()
static QString	tr (const char *sourceText, const char *comment=0, int n=-1)
static QString	trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...
Protected Functions inherited from QDeclarativeStateOperation
	QDeclarativeStateOperation (QObjectPrivate &dd, QObject *parent=0)
Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...
virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...
virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...
virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...
	QObject (QObjectPrivate &dd, QObject *parent=0)
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...
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 0. More...
int	senderSignalIndex () const
virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...
Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject
Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()
T *	qobject_cast (QObject *object)
	QObjectList
void *	qt_find_obj_child (QObject *parent, const char *type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 66 of file qdeclarativestateoperations_p.h.

Constructors and Destructors

QDeclarativeParentChange()

QDeclarativeParentChange::QDeclarativeParentChange

(

QObject *

parent = 0

)

Definition at line 208 of file qdeclarativestateoperations.cpp.

    : QDeclarativeStateOperation(*(new QDeclarativeParentChangePrivate), parent)
{
}

~QDeclarativeParentChange()

QDeclarativeParentChange::~QDeclarativeParentChange

(

)

Definition at line 213 of file qdeclarativestateoperations.cpp.

{
}

Functions

actions()

QDeclarativeStateOperation::ActionList QDeclarativeParentChange::actions ( )

virtual

Reimplemented from QDeclarativeStateOperation.

Definition at line 397 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    if (!d->target || !d->parent)
        return ActionList();

    ActionList actions;

    QDeclarativeAction a;
    a.event = this;
    actions << a;

    QDeclarativeContext *ctxt = qmlContext(this);

    if (d->xString.isValid()) {
        if (d->x.isValid()) {
            QDeclarativeAction xa(d->target, QLatin1String("x"), ctxt, d->x.value);
            actions << xa;
        } else {
            QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->xString.value.script(), d->target, ctxt);
            newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("x"), ctxt));
            QDeclarativeAction xa;
            xa.property = newBinding->property();
            xa.toBinding = newBinding;
            xa.fromValue = xa.property.read();
            xa.deletableToBinding = true;
            actions << xa;
        }
    }

    if (d->yString.isValid()) {
        if (d->y.isValid()) {
            QDeclarativeAction ya(d->target, QLatin1String("y"), ctxt, d->y.value);
            actions << ya;
        } else {
            QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->yString.value.script(), d->target, ctxt);
            newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("y"), ctxt));
            QDeclarativeAction ya;
            ya.property = newBinding->property();
            ya.toBinding = newBinding;
            ya.fromValue = ya.property.read();
            ya.deletableToBinding = true;
            actions << ya;
        }
    }

    if (d->scaleString.isValid()) {
        if (d->scale.isValid()) {
            QDeclarativeAction sa(d->target, QLatin1String("scale"), ctxt, d->scale.value);
            actions << sa;
        } else {
            QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->scaleString.value.script(), d->target, ctxt);
            newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("scale"), ctxt));
            QDeclarativeAction sa;
            sa.property = newBinding->property();
            sa.toBinding = newBinding;
            sa.fromValue = sa.property.read();
            sa.deletableToBinding = true;
            actions << sa;
        }
    }

    if (d->rotationString.isValid()) {
        if (d->rotation.isValid()) {
            QDeclarativeAction ra(d->target, QLatin1String("rotation"), ctxt, d->rotation.value);
            actions << ra;
        } else {
            QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->rotationString.value.script(), d->target, ctxt);
            newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("rotation"), ctxt));
            QDeclarativeAction ra;
            ra.property = newBinding->property();
            ra.toBinding = newBinding;
            ra.fromValue = ra.property.read();
            ra.deletableToBinding = true;
            actions << ra;
        }
    }

    if (d->widthString.isValid()) {
        if (d->width.isValid()) {
            QDeclarativeAction wa(d->target, QLatin1String("width"), ctxt, d->width.value);
            actions << wa;
        } else {
            QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->widthString.value.script(), d->target, ctxt);
            newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("width"), ctxt));
            QDeclarativeAction wa;
            wa.property = newBinding->property();
            wa.toBinding = newBinding;
            wa.fromValue = wa.property.read();
            wa.deletableToBinding = true;
            actions << wa;
        }
    }

    if (d->heightString.isValid()) {
        if (d->height.isValid()) {
            QDeclarativeAction ha(d->target, QLatin1String("height"), ctxt, d->height.value);
            actions << ha;
        } else {
            QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->heightString.value.script(), d->target, ctxt);
            newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("height"), ctxt));
            QDeclarativeAction ha;
            ha.property = newBinding->property();
            ha.toBinding = newBinding;
            ha.fromValue = ha.property.read();
            ha.deletableToBinding = true;
            actions << ha;
        }
    }

    return actions;
}

execute()

void QDeclarativeParentChange::execute ( Reason  reason = ActualChange )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 540 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->doChange(d->parent);
}

height()

QDeclarativeScriptString QDeclarativeParentChange::height

(

)

const

Referenced by setHeight(), and widthIsSet().

heightIsSet()

bool QDeclarativeParentChange::heightIsSet

(

)

const

Definition at line 310 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->heightString.isValid();
}

isReversable()

bool QDeclarativeParentChange::isReversable ( )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 546 of file qdeclarativestateoperations.cpp.

{
    return true;
}

object()

QDeclarativeItem * QDeclarativeParentChange::object

(

)

const

Definition at line 365 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->target;
}

originalParent()

QDeclarativeItem * QDeclarativeParentChange::originalParent

(

)

const

Definition at line 354 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->origParent;
}

override()

bool QDeclarativeParentChange::override ( QDeclarativeActionEvent *  other )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 562 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    if (other->typeName() != QLatin1String("ParentChange"))
        return false;
    if (QDeclarativeParentChange *otherPC = static_cast<QDeclarativeParentChange*>(other))
        return (d->target == otherPC->object());
    return false;
}

parent()

QDeclarativeItem* QDeclarativeParentChange::parent

(

)

const

Referenced by setObject(), and setParent().

reverse()

void QDeclarativeParentChange::reverse ( Reason  reason = ActualChange )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 551 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->doChange(d->origParent, d->origStackBefore);
}

rewind()

void QDeclarativeParentChange::rewind ( )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 601 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->doChange(d->rewindParent, d->rewindStackBefore);
}

rotation()

QDeclarativeScriptString QDeclarativeParentChange::rotation

(

)

const

Referenced by scaleIsSet(), and setRotation().

rotationIsSet()

bool QDeclarativeParentChange::rotationIsSet

(

)

const

Definition at line 348 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->rotationString.isValid();
}

saveCurrentValues()

void QDeclarativeParentChange::saveCurrentValues ( )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 572 of file qdeclarativestateoperations.cpp.

Referenced by saveOriginals().

{
    Q_D(QDeclarativeParentChange);
    if (!d->target) {
        d->rewindParent = 0;
        d->rewindStackBefore = 0;
        return;
    }

    d->rewindParent = d->target->parentItem();
    d->rewindStackBefore = 0;

    if (!d->rewindParent)
        return;

    //try to determine the item's original stack position so we can restore it
    int siblingIndex = ((AccessibleFxItem*)d->target)->siblingIndex() + 1;
    QList<QGraphicsItem*> children = d->rewindParent->childItems();
    for (int i = 0; i < children.count(); ++i) {
        QDeclarativeItem *child = qobject_cast<QDeclarativeItem*>(children.at(i));
        if (!child)
            continue;
        if (((AccessibleFxItem*)child)->siblingIndex() == siblingIndex) {
            d->rewindStackBefore = child;
            break;
        }
    }
}

saveOriginals()

void QDeclarativeParentChange::saveOriginals ( )

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 521 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    saveCurrentValues();
    d->origParent = d->rewindParent;
    d->origStackBefore = d->rewindStackBefore;
}

scale()

QDeclarativeScriptString QDeclarativeParentChange::scale

(

)

const

Referenced by heightIsSet(), and setScale().

scaleIsSet()

bool QDeclarativeParentChange::scaleIsSet

(

)

const

Definition at line 329 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->scaleString.isValid();
}

setHeight()

void QDeclarativeParentChange::setHeight

(

QDeclarativeScriptString

height

)

Definition at line 303 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->heightString = height;
    tryReal(d->height, height.script());
}

setObject()

void QDeclarativeParentChange::setObject

(

QDeclarativeItem *

target

)

Definition at line 371 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(QDeclarativeParentChange);
    d->target = target;
}

setParent()

void QDeclarativeParentChange::setParent

(

QDeclarativeItem *

parent

)

Definition at line 391 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(QDeclarativeParentChange);
    d->parent = parent;
}

setRotation()

void QDeclarativeParentChange::setRotation

(

QDeclarativeScriptString

rotation

)

Definition at line 341 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->rotationString = rotation;
    tryReal(d->rotation, rotation.script());
}

setScale()

void QDeclarativeParentChange::setScale

(

QDeclarativeScriptString

scale

)

Definition at line 322 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->scaleString = scale;
    tryReal(d->scale, scale.script());
}

setWidth()

void QDeclarativeParentChange::setWidth

(

QDeclarativeScriptString

width

)

Definition at line 284 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->widthString = width;
    tryReal(d->width, width.script());
}

setX()

void QDeclarativeParentChange::setX

(

QDeclarativeScriptString

x

)

Definition at line 246 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->xString = x;
    tryReal(d->x, x.script());
}

setY()

void QDeclarativeParentChange::setY

(

QDeclarativeScriptString

y

)

Definition at line 265 of file qdeclarativestateoperations.cpp.

{
    Q_D(QDeclarativeParentChange);
    d->yString = y;
    tryReal(d->y, y.script());
}

typeName()

QString QDeclarativeParentChange::typeName ( ) const

virtual

Reimplemented from QDeclarativeActionEvent.

Definition at line 557 of file qdeclarativestateoperations.cpp.

{
    return QLatin1String("ParentChange");
}

width()

QDeclarativeScriptString QDeclarativeParentChange::width

(

)

const

Referenced by setWidth(), and yIsSet().

widthIsSet()

bool QDeclarativeParentChange::widthIsSet

(

)

const

Definition at line 291 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->widthString.isValid();
}

x()

QDeclarativeScriptString QDeclarativeParentChange::x

(

)

const

Referenced by setX(), and ~QDeclarativeParentChange().

xIsSet()

bool QDeclarativeParentChange::xIsSet

(

)

const

Definition at line 253 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->xString.isValid();
}

y()

QDeclarativeScriptString QDeclarativeParentChange::y

(

)

const

Referenced by setY(), and xIsSet().

yIsSet()

bool QDeclarativeParentChange::yIsSet

(

)

const

Definition at line 272 of file qdeclarativestateoperations.cpp.

Referenced by QDeclarativeParentAnimation::transition().

{
    Q_D(const QDeclarativeParentChange);
    return d->yString.isValid();
}

Properties

height

QDeclarativeScriptString QDeclarativeParentChange::height

private

Definition at line 76 of file qdeclarativestateoperations_p.h.

parent

QDeclarativeItem * QDeclarativeParentChange::parent

private

Definition at line 72 of file qdeclarativestateoperations_p.h.

Referenced by QDeclarativeParentAnimation::transition().

rotation

QDeclarativeScriptString QDeclarativeParentChange::rotation

private

Definition at line 78 of file qdeclarativestateoperations_p.h.

scale

QDeclarativeScriptString QDeclarativeParentChange::scale

private

Definition at line 77 of file qdeclarativestateoperations_p.h.

target

QDeclarativeItem* QDeclarativeParentChange::target

private

Definition at line 71 of file qdeclarativestateoperations_p.h.

Referenced by setObject().

width

QDeclarativeScriptString QDeclarativeParentChange::width

private

Definition at line 75 of file qdeclarativestateoperations_p.h.

x

QDeclarativeScriptString QDeclarativeParentChange::x

private

Definition at line 73 of file qdeclarativestateoperations_p.h.

y

QDeclarativeScriptString QDeclarativeParentChange::y

private

Definition at line 74 of file qdeclarativestateoperations_p.h.

---

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

• /src/declarative/util/qdeclarativestateoperations_p.h
• /src/declarative/util/qdeclarativestateoperations.cpp