#include <qdeclarativeitem_p.h>

Inheritance diagram for QDeclarativeContents:

Signals
void	rectChanged (QRectF)

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...

Public Functions
void	calcGeometry ()

void	childAdded (QDeclarativeItem *item)

void	childRemoved (QDeclarativeItem *item)

void	complete ()

	QDeclarativeContents (QDeclarativeItem *item)

QRectF	rectF () const

	~QDeclarativeContents ()

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 QDeclarativeItemChangeListener
virtual QDeclarativeAnchorsPrivate *	anchorPrivate ()

virtual void	itemOpacityChanged (QDeclarativeItem *)

virtual void	itemSiblingOrderChanged (QDeclarativeItem *)

virtual void	itemVisibilityChanged (QDeclarativeItem *)

Protected Functions
void	itemDestroyed (QDeclarativeItem *item)

void	itemGeometryChanged (QDeclarativeItem *item, const QRectF &newGeometry, const QRectF &oldGeometry)

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...

Private Functions
void	calcHeight (QDeclarativeItem *changed=0)

void	calcWidth (QDeclarativeItem *changed=0)

Properties
qreal	m_height

QDeclarativeItem *	m_item

qreal	m_width

qreal	m_x

qreal	m_y

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. 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 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 83 of file qdeclarativeitem_p.h.

Constructors and Destructors

◆ QDeclarativeContents()

QDeclarativeContents::QDeclarativeContents ( QDeclarativeItem * item )

Definition at line 268 of file qdeclarativeitem.cpp.

                                                                  : m_item(item), m_x(0), m_y(0), m_width(0), m_height(0)
 {
     //### optimize
     connect(this, SIGNAL(rectChanged(QRectF)), m_item, SIGNAL(childrenRectChanged(QRectF)));
 }

◆ ~QDeclarativeContents()

QDeclarativeContents::~QDeclarativeContents ( )

Definition at line 274 of file qdeclarativeitem.cpp.

 {
     QList<QGraphicsItem *> children = m_item->childItems();
     for (int i = 0; i < children.count(); ++i) {
         QDeclarativeItem *child = qobject_cast<QDeclarativeItem *>(children.at(i));
         if(!child)//### Should this be ignoring non-QDeclarativeItem graphicsobjects?
             continue;
         QDeclarativeItemPrivate::get(child)->removeItemChangeListener(this, QDeclarativeItemPrivate::Geometry | QDeclarativeItemPrivate::Destroyed);
     }
 }

Functions

◆ calcGeometry()

void QDeclarativeContents::calcGeometry ( )

inline

Definition at line 95 of file qdeclarativeitem_p.h.

Referenced by childRemoved(), complete(), and itemDestroyed().

95 { calcWidth(); calcHeight(); }

QDeclarativeContents::calcHeight

void calcHeight(QDeclarativeItem *changed=0)

Definition: qdeclarativeitem.cpp:290

QDeclarativeContents::calcWidth

void calcWidth(QDeclarativeItem *changed=0)

Definition: qdeclarativeitem.cpp:328

◆ calcHeight()

void QDeclarativeContents::calcHeight ( QDeclarativeItem * changed = 0 )

private

Definition at line 290 of file qdeclarativeitem.cpp.

Referenced by calcGeometry(), childAdded(), and itemGeometryChanged().

 {
     qreal oldy = m_y;
     qreal oldheight = m_height;
 
     if (changed) {
         qreal top = oldy;
         qreal bottom = oldy + oldheight;
         qreal y = changed->y();
         if (y + changed->height() > bottom)
             bottom = y + changed->height();
         if (y < top)
             top = y;
         m_y = top;
         m_height = bottom - top;
     } else {
         qreal top = FLT_MAX;
         qreal bottom = 0;
         QList<QGraphicsItem *> children = m_item->childItems();
         for (int i = 0; i < children.count(); ++i) {
             QDeclarativeItem *child = qobject_cast<QDeclarativeItem *>(children.at(i));
             if(!child)//### Should this be ignoring non-QDeclarativeItem graphicsobjects?
                 continue;
             qreal y = child->y();
             if (y + child->height() > bottom)
                 bottom = y + child->height();
             if (y < top)
                 top = y;
         }
         if (!children.isEmpty())
             m_y = top;
         m_height = qMax(bottom - top, qreal(0.0));
     }
 
     if (m_height != oldheight || m_y != oldy)
         emit rectChanged(rectF());
 }

◆ calcWidth()

void QDeclarativeContents::calcWidth ( QDeclarativeItem * changed = 0 )

private

Definition at line 328 of file qdeclarativeitem.cpp.

Referenced by calcGeometry(), childAdded(), and itemGeometryChanged().

 {
     qreal oldx = m_x;
     qreal oldwidth = m_width;
 
     if (changed) {
         qreal left = oldx;
         qreal right = oldx + oldwidth;
         qreal x = changed->x();
         if (x + changed->width() > right)
             right = x + changed->width();
         if (x < left)
             left = x;
         m_x = left;
         m_width = right - left;
     } else {
         qreal left = FLT_MAX;
         qreal right = 0;
         QList<QGraphicsItem *> children = m_item->childItems();
         for (int i = 0; i < children.count(); ++i) {
             QDeclarativeItem *child = qobject_cast<QDeclarativeItem *>(children.at(i));
             if(!child)//### Should this be ignoring non-QDeclarativeItem graphicsobjects?
                 continue;
             qreal x = child->x();
             if (x + child->width() > right)
                 right = x + child->width();
             if (x < left)
                 left = x;
         }
         if (!children.isEmpty())
             m_x = left;
         m_width = qMax(right - left, qreal(0.0));
     }
 
     if (m_width != oldwidth || m_x != oldx)
         emit rectChanged(rectF());
 }

◆ childAdded()

void QDeclarativeContents::childAdded ( QDeclarativeItem * item )

Definition at line 404 of file qdeclarativeitem.cpp.

 {
     if (item)
         QDeclarativeItemPrivate::get(item)->addItemChangeListener(this, QDeclarativeItemPrivate::Geometry | QDeclarativeItemPrivate::Destroyed);
     calcWidth(item);
     calcHeight(item);
 }

◆ childRemoved()

void QDeclarativeContents::childRemoved ( QDeclarativeItem * item )

Definition at line 397 of file qdeclarativeitem.cpp.

 {
     if (item)
         QDeclarativeItemPrivate::get(item)->removeItemChangeListener(this, QDeclarativeItemPrivate::Geometry | QDeclarativeItemPrivate::Destroyed);
     calcGeometry();
 }

◆ complete()

void QDeclarativeContents::complete ( )

Definition at line 366 of file qdeclarativeitem.cpp.

Referenced by calcGeometry().

 {
     QList<QGraphicsItem *> children = m_item->childItems();
     for (int i = 0; i < children.count(); ++i) {
         QDeclarativeItem *child = qobject_cast<QDeclarativeItem *>(children.at(i));
         if(!child)//### Should this be ignoring non-QDeclarativeItem graphicsobjects?
             continue;
         QDeclarativeItemPrivate::get(child)->addItemChangeListener(this, QDeclarativeItemPrivate::Geometry | QDeclarativeItemPrivate::Destroyed);
         //###what about changes to visibility?
     }
 
     calcGeometry();
 }

◆ itemDestroyed()

void QDeclarativeContents::itemDestroyed ( QDeclarativeItem * item )

protectedvirtual

Reimplemented from QDeclarativeItemChangeListener.

Definition at line 390 of file qdeclarativeitem.cpp.

Referenced by calcGeometry().

 {
     if (item)
         QDeclarativeItemPrivate::get(item)->removeItemChangeListener(this, QDeclarativeItemPrivate::Geometry | QDeclarativeItemPrivate::Destroyed);
     calcGeometry();
 }

◆ itemGeometryChanged()

void QDeclarativeContents::itemGeometryChanged	(	QDeclarativeItem *	item,
		const QRectF &	newGeometry,
		const QRectF &	oldGeometry
	)

protectedvirtual

Reimplemented from QDeclarativeItemChangeListener.

Definition at line 380 of file qdeclarativeitem.cpp.

Referenced by calcGeometry().

 {
     Q_UNUSED(changed)
     //### we can only pass changed if the left edge has moved left, or the right edge has moved right
     if (newGeometry.width() != oldGeometry.width() || newGeometry.x() != oldGeometry.x())
         calcWidth(/*changed*/);
     if (newGeometry.height() != oldGeometry.height() || newGeometry.y() != oldGeometry.y())
         calcHeight(/*changed*/);
 }

◆ rectChanged

void QDeclarativeContents::rectChanged ( QRectF )

signal

Referenced by calcGeometry(), calcHeight(), calcWidth(), and QDeclarativeContents().

◆ rectF()

QRectF QDeclarativeContents::rectF ( ) const

Definition at line 285 of file qdeclarativeitem.cpp.

Referenced by calcHeight(), and calcWidth().

 {
     return QRectF(m_x, m_y, m_width, m_height);
 }

Properties

◆ m_height

qreal QDeclarativeContents::m_height

private

Definition at line 114 of file qdeclarativeitem_p.h.

Referenced by calcHeight(), and rectF().

◆ m_item

QDeclarativeItem* QDeclarativeContents::m_item

private

Definition at line 110 of file qdeclarativeitem_p.h.

Referenced by calcHeight(), calcWidth(), complete(), QDeclarativeContents(), and ~QDeclarativeContents().

◆ m_width

qreal QDeclarativeContents::m_width

private

Definition at line 113 of file qdeclarativeitem_p.h.

Referenced by calcWidth(), and rectF().

◆ m_x

qreal QDeclarativeContents::m_x

private

Definition at line 111 of file qdeclarativeitem_p.h.

Referenced by calcWidth(), and rectF().

◆ m_y

qreal QDeclarativeContents::m_y

private

Definition at line 112 of file qdeclarativeitem_p.h.

Referenced by calcHeight(), and rectF().

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

/src/declarative/graphicsitems/qdeclarativeitem_p.h
/src/declarative/graphicsitems/qdeclarativeitem.cpp

Signals

Public Functions

Protected Functions

Private Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QDeclarativeContents()

◆ ~QDeclarativeContents()

Functions

◆ calcGeometry()

◆ calcHeight()

◆ calcWidth()

◆ childAdded()

◆ childRemoved()

◆ complete()

◆ itemDestroyed()

◆ itemGeometryChanged()

◆ rectChanged

◆ rectF()

Properties

◆ m_height

◆ m_item

◆ m_width

◆ m_x

◆ m_y