DelegateRecycler
#include <delegaterecycler.h>

Properties | |
QQmlComponent | sourceComponent |
![]() | |
activeFocus | |
activeFocusOnTab | |
antialiasing | |
baselineOffset | |
childrenRect | |
clip | |
enabled | |
focus | |
height | |
implicitHeight | |
implicitWidth | |
opacity | |
parent | |
rotation | |
scale | |
smooth | |
state | |
transformOrigin | |
visible | |
width | |
x | |
y | |
z | |
![]() | |
objectName | |
Signals | |
void | sourceComponentChanged () |
Public Member Functions | |
DelegateRecycler (QQuickItem *parent=nullptr) | |
void | resetSourceComponent () |
void | setSourceComponent (QQmlComponent *component) |
QQmlComponent * | sourceComponent () const |
![]() | |
QQuickItem (QQuickItem *parent) | |
Qt::MouseButtons | acceptedMouseButtons () const const |
bool | acceptHoverEvents () const const |
bool | acceptTouchEvents () const const |
void | activeFocusChanged (bool) |
bool | activeFocusOnTab () const const |
void | activeFocusOnTabChanged (bool) |
bool | antialiasing () const const |
void | antialiasingChanged (bool) |
qreal | baselineOffset () const const |
void | baselineOffsetChanged (qreal) |
QQuickItem * | childAt (qreal x, qreal y) const const |
QList< QQuickItem * > | childItems () const const |
QRectF | childrenRect () |
void | childrenRectChanged (const QRectF &) |
bool | clip () const const |
void | clipChanged (bool) |
QObject * | containmentMask () const const |
void | containmentMaskChanged () |
virtual bool | contains (const QPointF &point) const const |
QCursor | cursor () const const |
void | enabledChanged () |
bool | filtersChildMouseEvents () const const |
QQuickItem::Flags | flags () const const |
void | focusChanged (bool) |
void | forceActiveFocus () |
void | forceActiveFocus (Qt::FocusReason reason) |
void | grabMouse () |
QSharedPointer< QQuickItemGrabResult > | grabToImage (const QSize &targetSize) |
void | grabTouchPoints (const QVector< int > &ids) |
bool | hasActiveFocus () const const |
bool | hasFocus () const const |
qreal | height () const const |
void | heightChanged () |
qreal | implicitHeight () const const |
void | implicitHeightChanged () |
qreal | implicitWidth () const const |
void | implicitWidthChanged () |
virtual QVariant | inputMethodQuery (Qt::InputMethodQuery query) const const |
bool | isAncestorOf (const QQuickItem *child) const const |
bool | isEnabled () const const |
bool | isFocusScope () const const |
virtual bool | isTextureProvider () const const |
bool | isVisible () const const |
bool | keepMouseGrab () const const |
bool | keepTouchGrab () const const |
QPointF | mapFromGlobal (const QPointF &point) const const |
QPointF | mapFromItem (const QQuickItem *item, const QPointF &point) const const |
QPointF | mapFromScene (const QPointF &point) const const |
QRectF | mapRectFromItem (const QQuickItem *item, const QRectF &rect) const const |
QRectF | mapRectFromScene (const QRectF &rect) const const |
QRectF | mapRectToItem (const QQuickItem *item, const QRectF &rect) const const |
QRectF | mapRectToScene (const QRectF &rect) const const |
QPointF | mapToGlobal (const QPointF &point) const const |
QPointF | mapToItem (const QQuickItem *item, const QPointF &point) const const |
QPointF | mapToScene (const QPointF &point) const const |
QQuickItem * | nextItemInFocusChain (bool forward) |
qreal | opacity () const const |
void | opacityChanged () |
void | parentChanged (QQuickItem *) |
QQuickItem * | parentItem () const const |
void | polish () |
void | resetAntialiasing () |
void | resetHeight () |
void | resetWidth () |
qreal | rotation () const const |
void | rotationChanged () |
qreal | scale () const const |
void | scaleChanged () |
QQuickItem * | scopedFocusItem () const const |
void | setAcceptedMouseButtons (Qt::MouseButtons buttons) |
void | setAcceptHoverEvents (bool enabled) |
void | setAcceptTouchEvents (bool enabled) |
void | setActiveFocusOnTab (bool) |
void | setAntialiasing (bool) |
void | setBaselineOffset (qreal) |
void | setClip (bool) |
void | setContainmentMask (QObject *mask) |
void | setCursor (const QCursor &cursor) |
void | setEnabled (bool) |
void | setFiltersChildMouseEvents (bool filter) |
void | setFlag (QQuickItem::Flag flag, bool enabled) |
void | setFlags (QQuickItem::Flags flags) |
void | setFocus (bool focus, Qt::FocusReason reason) |
void | setFocus (bool) |
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 | setSize (const QSizeF &size) |
void | setSmooth (bool) |
void | setState (const QString &) |
void | setTransformOrigin (QQuickItem::TransformOrigin) |
void | setVisible (bool) |
void | setWidth (qreal) |
void | setX (qreal) |
void | setY (qreal) |
void | setZ (qreal) |
QSizeF | size () const const |
bool | smooth () const const |
void | smoothChanged (bool) |
void | stackAfter (const QQuickItem *sibling) |
void | stackBefore (const QQuickItem *sibling) |
QString | state () const const |
void | stateChanged (const QString &) |
virtual QSGTextureProvider * | textureProvider () const const |
QQuickItem::TransformOrigin | transformOrigin () const const |
void | transformOriginChanged (QQuickItem::TransformOrigin) |
void | ungrabMouse () |
void | ungrabTouchPoints () |
void | unsetCursor () |
void | update () |
void | visibleChanged () |
qreal | width () const const |
void | widthChanged () |
QQuickWindow * | window () const const |
void | windowChanged (QQuickWindow *window) |
qreal | x () const const |
void | xChanged () |
qreal | y () const const |
void | yChanged () |
qreal | z () const const |
void | zChanged () |
![]() | |
QObject (QObject *parent) | |
bool | blockSignals (bool block) |
const QObjectList & | children () const const |
QMetaObject::Connection | connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const |
void | deleteLater () |
void | destroyed (QObject *obj) |
bool | disconnect (const char *signal, const QObject *receiver, const char *method) const const |
bool | disconnect (const QObject *receiver, const char *method) const const |
void | dumpObjectInfo () |
void | dumpObjectInfo () const const |
void | dumpObjectTree () |
void | dumpObjectTree () const const |
QList< QByteArray > | dynamicPropertyNames () const const |
virtual bool | eventFilter (QObject *watched, QEvent *event) |
T | findChild (const QString &name, Qt::FindChildOptions options) const const |
QList< T > | findChildren (const QRegExp ®Exp, Qt::FindChildOptions options) const const |
QList< T > | findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const |
QList< T > | findChildren (const QString &name, Qt::FindChildOptions options) const const |
bool | inherits (const char *className) const const |
void | installEventFilter (QObject *filterObj) |
bool | isWidgetType () const const |
bool | isWindowType () const const |
void | killTimer (int id) |
virtual const QMetaObject * | metaObject () const const |
void | moveToThread (QThread *targetThread) |
QString | objectName () const const |
void | objectNameChanged (const QString &objectName) |
QObject * | parent () const const |
QVariant | property (const char *name) const const |
Q_CLASSINFO (Name, Value) | |
Q_DISABLE_COPY (Class) | |
Q_DISABLE_COPY_MOVE (Class) | |
Q_DISABLE_MOVE (Class) | |
Q_EMIT Q_EMIT | |
Q_ENUM (...) | |
Q_ENUM_NS (...) | |
Q_ENUMS (...) | |
Q_FLAG (...) | |
Q_FLAG_NS (...) | |
Q_FLAGS (...) | |
Q_GADGET Q_GADGET | |
Q_INTERFACES (...) | |
Q_INVOKABLE Q_INVOKABLE | |
Q_NAMESPACE Q_NAMESPACE | |
Q_NAMESPACE_EXPORT (EXPORT_MACRO) | |
Q_OBJECT Q_OBJECT | |
Q_PROPERTY (...) | |
Q_REVISION Q_REVISION | |
Q_SET_OBJECT_NAME (Object) | |
Q_SIGNAL Q_SIGNAL | |
Q_SIGNALS Q_SIGNALS | |
Q_SLOT Q_SLOT | |
Q_SLOTS Q_SLOTS | |
T | qFindChild (const QObject *obj, const QString &name) |
QList< T > | qFindChildren (const QObject *obj, const QRegExp ®Exp) |
QList< T > | qFindChildren (const QObject *obj, const QString &name) |
T | qobject_cast (const QObject *object) |
T | qobject_cast (QObject *object) |
QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT | |
void | removeEventFilter (QObject *obj) |
void | setObjectName (const QString &name) |
void | setParent (QObject *parent) |
bool | setProperty (const char *name, const QVariant &value) |
bool | signalsBlocked () const const |
int | startTimer (int interval, Qt::TimerType timerType) |
int | startTimer (std::chrono::milliseconds time, Qt::TimerType timerType) |
QThread * | thread () const const |
Static Public Member Functions | |
static DelegateRecyclerAttached * | qmlAttachedProperties (QObject *object) |
![]() | |
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 *context, Functor functor, 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) |
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, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method) |
bool | disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method) |
QString | tr (const char *sourceText, const char *disambiguation, int n) |
QString | trUtf8 (const char *sourceText, const char *disambiguation, int n) |
Protected Member Functions | |
void | focusInEvent (QFocusEvent *event) override |
void | geometryChange (const QRectF &newGeometry, const QRectF &oldGeometry) override |
void | updateHints () |
void | updateSize (bool parentResized) |
![]() | |
virtual bool | childMouseEventFilter (QQuickItem *item, QEvent *event) |
virtual void | classBegin () override |
virtual void | componentComplete () override |
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) override |
virtual void | focusOutEvent (QFocusEvent *) |
virtual void | geometryChanged (const QRectF &newGeometry, const QRectF &oldGeometry) |
bool | heightValid () const const |
virtual void | hoverEnterEvent (QHoverEvent *event) |
virtual void | hoverLeaveEvent (QHoverEvent *event) |
virtual void | hoverMoveEvent (QHoverEvent *event) |
virtual void | inputMethodEvent (QInputMethodEvent *event) |
bool | isComponentComplete () const const |
virtual void | itemChange (QQuickItem::ItemChange change, const QQuickItem::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, QQuickItem::UpdatePaintNodeData *updatePaintNodeData) |
virtual void | updatePolish () |
virtual void | wheelEvent (QWheelEvent *event) |
bool | widthValid () const const |
![]() | |
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 const |
int | receivers (const char *signal) const const |
QObject * | sender () const const |
int | senderSignalIndex () const const |
virtual void | timerEvent (QTimerEvent *event) |
Additional Inherited Members | |
![]() | |
enum | Flag |
enum | ItemChange |
enum | TransformOrigin |
![]() | |
Bottom | |
BottomLeft | |
BottomRight | |
Center | |
typedef | Flags |
ItemAcceptsDrops | |
ItemAcceptsInputMethod | |
ItemActiveFocusHasChanged | |
ItemAntialiasingHasChanged | |
ItemChildAddedChange | |
ItemChildRemovedChange | |
ItemClipsChildrenToShape | |
ItemDevicePixelRatioHasChanged | |
ItemEnabledHasChanged | |
ItemHasContents | |
ItemIsFocusScope | |
ItemOpacityHasChanged | |
ItemParentHasChanged | |
ItemRotationHasChanged | |
ItemSceneChange | |
ItemVisibleHasChanged | |
Left | |
Right | |
Top | |
TopLeft | |
TopRight | |
![]() | |
typedef | QObjectList |
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 40 of file delegaterecycler.h.
Property Documentation
◆ 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 53 of file delegaterecycler.h.
The documentation for this class was generated from the following files:
Documentation copyright © 1996-2023 The KDE developers.
Generated on Mon Feb 6 2023 04:13:18 by doxygen 1.8.17 written by Dimitri van Heesch, © 1997-2006
KDE's Doxygen guidelines are available online.