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#include <delegaterecycler.h>

Inheritance diagram for DelegateRecycler:

Properties
QQmlComponent	sourceComponent

Properties inherited from QQuickItem
	activeFocus

	activeFocusOnTab

	baselineOffset

	childrenRect

	clip

	enabled

	focus

	height

	opacity

	parent

	state

	visible

	width

	x

	y

	z

Properties inherited from QObject
	objectName

Signals
void	sourceComponentChanged ()

Public Member Functions
	DelegateRecycler (QQuickItem *parent=nullptr)

void	resetSourceComponent ()

void	setSourceComponent (QQmlComponent *component)

QQmlComponent *	sourceComponent () const

Public Member Functions inherited from QQuickItem
	QQuickItem (QQuickItem *parent)

Qt::MouseButtons	acceptedMouseButtons () const

bool	acceptHoverEvents () const

bool	activeFocusOnTab () const

bool	antialiasing () const

qreal	baselineOffset () const

QQuickItem *	childAt (qreal x, qreal y) const

QList< QQuickItem * >	childItems () const

QRectF	childrenRect ()

bool	clip () const

virtual bool	contains (const QPointF &point) const

QCursor	cursor () const

bool	filtersChildMouseEvents () const

Flags	flags () const

void	forceActiveFocus ()

void	forceActiveFocus (Qt::FocusReason reason)

void	grabMouse ()

void	grabTouchPoints (const QVector< int > &ids)

bool	hasActiveFocus () const

bool	hasFocus () const

qreal	height () const

qreal	implicitHeight () const

qreal	implicitWidth () const

virtual QVariant	inputMethodQuery (Qt::InputMethodQuery query) const

bool	isEnabled () const

bool	isFocusScope () const

virtual bool	isTextureProvider () const

bool	isVisible () const

bool	keepMouseGrab () const

bool	keepTouchGrab () const

QPointF	mapFromItem (const QQuickItem *item, const QPointF &point) const

QPointF	mapFromScene (const QPointF &point) const

QRectF	mapRectFromItem (const QQuickItem *item, const QRectF &rect) const

QRectF	mapRectFromScene (const QRectF &rect) const

QRectF	mapRectToItem (const QQuickItem *item, const QRectF &rect) const

QRectF	mapRectToScene (const QRectF &rect) const

QPointF	mapToItem (const QQuickItem *item, const QPointF &point) const

QPointF	mapToScene (const QPointF &point) const

QQuickItem *	nextItemInFocusChain (bool forward)

qreal	opacity () const

QQuickItem *	parentItem () const

void	polish ()

void	resetHeight ()

void	resetWidth ()

qreal	rotation () const

qreal	scale () const

QQuickItem *	scopedFocusItem () const

void	setAcceptedMouseButtons (Qt::MouseButtons buttons)

void	setAcceptHoverEvents (bool enabled)

void	setActiveFocusOnTab (bool)

void	setAntialiasing (bool)

void	setBaselineOffset (qreal)

void	setClip (bool)

void	setCursor (const QCursor &cursor)

void	setEnabled (bool)

void	setFiltersChildMouseEvents (bool filter)

void	setFlag (Flag flag, bool enabled)

void	setFlags (QFlags< QQuickItem::Flag > flags)

void	setFocus (bool)

void	setFocus (bool focus, Qt::FocusReason reason)

void	setHeight (qreal)

void	setImplicitHeight (qreal)

void	setImplicitWidth (qreal)

void	setKeepMouseGrab (bool keep)

void	setKeepTouchGrab (bool keep)

void	setOpacity (qreal)

void	setParentItem (QQuickItem *parent)

void	setRotation (qreal)

void	setScale (qreal)

void	setSmooth (bool)

void	setState (const QString &)

void	setTransformOrigin (TransformOrigin)

void	setVisible (bool)

void	setWidth (qreal)

void	setX (qreal)

void	setY (qreal)

void	setZ (qreal)

bool	smooth () const

void	stackAfter (const QQuickItem *sibling)

void	stackBefore (const QQuickItem *sibling)

QString	state () const

virtual QSGTextureProvider *	textureProvider () const

TransformOrigin	transformOrigin () const

void	ungrabMouse ()

void	ungrabTouchPoints ()

void	unsetCursor ()

void	update ()

qreal	width () const

QQuickWindow *	window () const

void	windowChanged (QQuickWindow *window)

qreal	x () const

qreal	y () const

qreal	z () const

Public Member Functions inherited from QObject
	QObject (QObject *parent)

bool	blockSignals (bool block)

const QObjectList &	children () const

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const

bool	disconnect (const QObject receiver, const char method) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QByteArray >	dynamicPropertyNames () const

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, QFlags< Qt::FindChildOption > options) const

QList< T >	findChildren (const QString &name, QFlags< Qt::FindChildOption > options) const

QList< T >	findChildren (const QRegExp &regExp, QFlags< Qt::FindChildOption > options) const

QList< T >	findChildren (const QRegularExpression &re, QFlags< Qt::FindChildOption > options) const

bool	inherits (const char *className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const

QVariant	property (const char *name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType)

QThread *	thread () const

Public Member Functions inherited from QQmlParserStatus
virtual void	classBegin ()=0

virtual void	componentComplete ()=0

Protected Member Functions
void	focusInEvent (QFocusEvent *event) override

void	geometryChanged (const QRectF &newGeometry, const QRectF &oldGeometry) override

void	updateHints ()

void	updateSize (bool parentResized)

Protected Member Functions inherited from QQuickItem
virtual bool	childMouseEventFilter (QQuickItem item, QEvent event)

virtual void	classBegin ()

virtual void	componentComplete ()

virtual void	dragEnterEvent (QDragEnterEvent *event)

virtual void	dragLeaveEvent (QDragLeaveEvent *event)

virtual void	dragMoveEvent (QDragMoveEvent *event)

virtual void	dropEvent (QDropEvent *event)

virtual bool	event (QEvent *ev)

virtual void	focusOutEvent (QFocusEvent *event)

bool	heightValid () const

virtual void	hoverEnterEvent (QHoverEvent *event)

virtual void	hoverLeaveEvent (QHoverEvent *event)

virtual void	hoverMoveEvent (QHoverEvent *event)

virtual void	inputMethodEvent (QInputMethodEvent *event)

bool	isComponentComplete () const

virtual void	itemChange (ItemChange change, const ItemChangeData &value)

virtual void	keyPressEvent (QKeyEvent *event)

virtual void	keyReleaseEvent (QKeyEvent *event)

virtual void	mouseDoubleClickEvent (QMouseEvent *event)

virtual void	mouseMoveEvent (QMouseEvent *event)

virtual void	mousePressEvent (QMouseEvent *event)

virtual void	mouseReleaseEvent (QMouseEvent *event)

virtual void	mouseUngrabEvent ()

virtual void	releaseResources ()

virtual void	touchEvent (QTouchEvent *event)

virtual void	touchUngrabEvent ()

void	updateInputMethod (Qt::InputMethodQueries queries)

virtual QSGNode *	updatePaintNode (QSGNode oldNode, UpdatePaintNodeData updatePaintNodeData)

virtual void	updatePolish ()

virtual void	wheelEvent (QWheelEvent *event)

bool	widthValid () const

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const

int	receivers (const char *signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Additional Inherited Members
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

Public Attributes inherited from QQuickItem
typedef	Flags

Detailed Description

This class may be used as a delegate of a ListView or a GridView in the case the intended delegate is a bit heavy, with many objects inside.

This will ensure the delegate instances will be put back in a common pool after destruction, so when scrolling a big list, the delegates from old delete items will be taken from the pool and reused, minimizing the need of instantiating new objects and deleting old ones. It ensures scrolling of lists with heavy delegates is smoother and helps with memory fragmentations as well.

NOTE: CardListView and CardGridView are already using this recycler, so do NOT use it as a delegate for those 2 views. Also, do NOT use this with a Repeater.

Since: 2.4

Definition at line 44 of file delegaterecycler.h.

Property Documentation

QQmlComponent * DelegateRecycler::sourceComponent

readwrite

The Component the actual delegates will be built from.

Note: the component may not be a child of this object, therefore it can't be declared inside the DelegateRecycler declaration. The DelegateRecycler will not take ownership of the delegate Component, so it's up to the caller to delete it (usually with the normal child/parent relationship)

Definition at line 55 of file delegaterecycler.h.

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

KDE's Doxygen guidelines are available online.

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Properties

Signals

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Property Documentation