Qt
Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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QObjectPrivate Class Reference

#include <qobject_p.h>

Inherits QObjectData.

Inherited by QAbstractAnimationPrivate, QAbstractEventDispatcherPrivate, QAbstractItemDelegatePrivate, QAbstractItemModelPrivate, QAbstractItemModelTesterPrivate, QAbstractItemModelTesterPrivate, QAbstractNetworkCachePrivate, QAbstractSocketEnginePrivate, QAbstractTextDocumentLayoutPrivate, QAccessibilityHintsPrivate, QActionGroupPrivate, QActionPrivate, QAmbientSoundPrivate, QAnimationDriverPrivate, QAudioBufferOutputPrivate, QAudioDecoderPrivate, QAudioListenerPrivate, QAudioListenerPrivate, QAudioRoomPrivate, QButtonGroupPrivate, QCameraPrivate, QCompleterPrivate, QCoreApplicationPrivate, QDBusAbstractAdaptorPrivate, QDBusAbstractInterfacePrivate, QDBusServiceWatcherPrivate, QDBusServiceWatcherPrivate, QDataWidgetMapperPrivate, QDataWidgetMapperPrivate, QDnsLookupPrivate, QDragPrivate, QDtlsClientVerifierPrivate, QDtlsPrivate, QEventLoopPrivate, QFileSelectorPrivate [private], QFileSystemWatcherPrivate, QFutureWatcherBasePrivate, QGeoAreaMonitorSourcePrivate, QGeoAreaMonitorSourcePrivate, QGeoMapPrivate, QGeoPositionInfoSourcePrivate, QGeoRouteParserPrivate, QGeoSatelliteInfoSourcePrivate, QGeoTileFetcherPrivate, QGeoTiledMapScenePrivate, QGesturePrivate, QGraphicsAnchorPrivate, QGraphicsEffectPrivate, QGraphicsEffectSourcePrivate, QGraphicsSceneIndexPrivate, QGraphicsScenePrivate, QGraphicsTransformPrivate, QHelpSearchEngineCorePrivate, QHelpSearchEngineCorePrivate, QHttpMultiPartPrivate, QHttpNetworkConnectionPrivate, QHttpNetworkReplyPrivate, QIODevicePrivate, QIOOperationPrivate, QInputDeviceManagerPrivate, QInputDevicePrivate, QInputMethodPrivate, QItemSelectionModelPrivate, QJSEnginePrivate, QLanguageServerPrivate, QLayoutPrivate, QLocalServerPrivate, QMediaCaptureSessionPrivate, QMediaFrameInputPrivate, QMediaPlayerPrivate, QMimeDataPrivate, QMimeDataPrivate, QMoviePrivate, QMoviePrivate, QNetworkAccessBackendPrivate, QNetworkAccessBackendPrivate, QNetworkAccessManagerPrivate, QNetworkCookieJarPrivate, QNetworkInformationPrivate, QNetworkInformationPrivate, QOffscreenSurfacePrivate, QOpenGLContextGroupPrivate, QOpenGLContextPrivate, QOpenGLShaderPrivate, QOpenGLShaderPrivate, QOpenGLShaderProgramPrivate, QOpenGLShaderProgramPrivate, QOpenGLTimeMonitorPrivate, QOpenGLTimeMonitorPrivate, QOpenGLTimerQueryPrivate, QOpenGLTimerQueryPrivate, QOpenGLVertexArrayObjectPrivate, QOpenGLVertexArrayObjectPrivate, QPacketProtocolPrivate, QPacketProtocolPrivate, QPdfWriterPrivate, QPdfWriterPrivate, QPixmapFilterPrivate, QPixmapFilterPrivate, QPlatformInputContextPrivate, QPlatformTextureListPrivate, QPlatformTextureListPrivate, QQC2::QStylePrivate, QQmlApplicationPrivate, QQmlBindPrivate, QQmlBindPrivate, QQmlComponentPrivate, QQmlConnectionsPrivate, QQmlConnectionsPrivate, QQmlContextPrivate, QQmlDebugClientPrivate, QQmlDebugConnectionPrivate, QQmlDebugConnectionPrivate, QQmlDebugServicePrivate, QQmlDebugServicePrivate, QQmlDelegateModelGroupPrivate, QQmlDelegateModelPrivate, QQmlExpressionPrivate, QQmlFileSelectorPrivate, QQmlFilterBasePrivate, QQmlInstantiatorPrivate, QQmlObjectModelPrivate, QQmlObjectModelPrivate, QQmlProfilerQtdWriterPrivate, QQmlProfilerQtdWriterPrivate, QQmlPropertyMapPrivate, QQmlPropertyMapPrivate, QQmlSorterBasePrivate, QQmlSynchronizerPrivate, QQmlSynchronizerPrivate, QQmlTimerPrivate, QQmlTimerPrivate, QQuick3DObjectPrivate, QQuickAbstractAnimationPrivate, QQuickActionGroupAttachedPrivate, QQuickActionGroupAttachedPrivate, QQuickActionGroupPrivate, QQuickActionGroupPrivate, QQuickActionPrivate, QQuickAnchorSetPrivate, QQuickAnchorSetPrivate, QQuickAnchorsPrivate, QQuickAnimationControllerPrivate, QQuickAnimationControllerPrivate, QQuickApplicationWindowAttachedPrivate, QQuickApplicationWindowAttachedPrivate, QQuickAttachedPropertyPropagatorPrivate, QQuickAttachedPropertyPropagatorPrivate, QQuickBehaviorPrivate, QQuickBehaviorPrivate, QQuickBoundaryRulePrivate, QQuickBoundaryRulePrivate, QQuickButtonGroupAttachedPrivate, QQuickButtonGroupAttachedPrivate, QQuickButtonGroupPrivate, QQuickButtonGroupPrivate, QQuickColorDialogImplAttachedPrivate, QQuickContextMenuPrivate, QQuickContextMenuPrivate, QQuickDeliveryAgentPrivate, QQuickDialogButtonBoxAttachedPrivate, QQuickDragAttachedPrivate, QQuickFileDialogImplAttachedPrivate, QQuickFolderDialogImplAttachedPrivate, QQuickFontDialogImplAttachedPrivate, QQuickFontLoaderPrivate, QQuickFontLoaderPrivate, QQuickFrameAnimationPrivate, QQuickFrameAnimationPrivate, QQuickImageResponsePrivate, QQuickIndicatorButtonPrivate, QQuickItemGrabResultPrivate, QQuickItemGrabResultPrivate, QQuickItemPrivate, QQuickKeyNavigationAttachedPrivate, QQuickKeysAttachedPrivate, QQuickMessageDialogImplAttachedPrivate, QQuickOverlayAttachedPrivate, QQuickOverlayAttachedPrivate, QQuickPackagePrivate, QQuickPackagePrivate, QQuickPathPrivate, QQuickPointerHandlerPrivate, QQuickPopupAnchorsPrivate, QQuickPopupPrivate, QQuickRangeSliderNodePrivate, QQuickRangeSliderNodePrivate, QQuickRenderControlPrivate, QQuickScrollBarAttachedPrivate, QQuickScrollIndicatorAttachedPrivate, QQuickScrollIndicatorAttachedPrivate, QQuickSplitHandleAttachedPrivate, QQuickSplitViewAttachedPrivate, QQuickStackViewAttachedPrivate, QQuickStateGroupPrivate, QQuickStateGroupPrivate, QQuickStateOperationPrivate, QQuickStatePrivate, QQuickSwipeDelegateAttachedPrivate, QQuickSwipeDelegateAttachedPrivate, QQuickSwipePrivate, QQuickSwipePrivate, QQuickSwipeViewAttachedPrivate, QQuickSwipeViewAttachedPrivate, QQuickSystemPalettePrivate, QQuickSystemPalettePrivate, QQuickTabBarAttachedPrivate, QQuickTabBarAttachedPrivate, QQuickTextAreaAttachedPrivate, QQuickTextAreaAttachedPrivate, QQuickTextControlPrivate, QQuickTextDocumentPrivate, QQuickToolTipAttachedPrivate, QQuickToolTipAttachedPrivate, QQuickTransformPrivate, QQuickTransitionPrivate, QQuickTransitionPrivate, QQuickTumblerAttachedPrivate, QRandomAccessAsyncFilePrivate, QRestAccessManagerPrivate, QSGAbstractRendererPrivate, QSGTexturePrivate, QScreenCapturePrivate, QScreenCapturePrivate, QScreenPrivate, QSessionManagerPrivate, QSettingsPrivate, QSharedImageLoaderPrivate, QSharedImageLoaderPrivate, QShortcutPrivate, QSignalMapperPrivate, QSignalMapperPrivate, QSocketNotifierPrivate, QSocketNotifierPrivate, QSoundEffectPrivate, QSqlDriverPrivate, QStyleHintsPrivate, QStylePrivate, QSvgRendererPrivate, QSvgRendererPrivate, QSyntaxHighlighterPrivate, QSyntaxHighlighterPrivate, QSystemTrayIconPrivate, QTcpServerPrivate, QTextDocumentPrivate, QTextObjectPrivate, QThreadPoolPrivate, QThreadPrivate, QTimeLinePrivate, QTimeLinePrivate, QTimerPrivate, QTranslatorPrivate, QTranslatorPrivate, QUndoGroupPrivate, QUndoGroupPrivate, QValidatorPrivate, QValidatorPrivate, QWavefrontMeshPrivate, QWavefrontMeshPrivate, QWaylandClientExtensionPrivate, QWaylandClientPrivate, QWaylandClientPrivate, QWaylandCompositorExtensionPrivate, QWaylandCompositorPrivate, QWaylandDestroyListenerPrivate, QWaylandDragPrivate, QWaylandDragPrivate, QWaylandInputMethodControlPrivate, QWaylandKeyboardPrivate, QWaylandKeymapPrivate, QWaylandOutputPrivate, QWaylandPointerPrivate, QWaylandQuickHardwareLayerPrivate, QWaylandQuickHardwareLayerPrivate, QWaylandSeatPrivate, QWaylandSurfaceGrabberPrivate, QWaylandSurfaceGrabberPrivate, QWaylandSurfacePrivate, QWaylandTouchPrivate, QWaylandViewPrivate, QWaylandXdgOutputV1Private, QWaylandXdgPopupPrivate, QWaylandXdgToplevelPrivate, QWidgetPrivate, QWidgetTextControlPrivate, QWinEventNotifierPrivate, QWindowCapturePrivate, QWindowCapturePrivate, QWindowPrivate, QtWaylandClient::QWaylandAbstractDecorationPrivate, and QtWaylandClient::QWaylandAbstractDecorationPrivate.

Collaboration diagram for QObjectPrivate:

Classes

struct  Connection
struct  ConnectionData
struct  ConnectionList
struct  ConnectionOrSignalVector
struct  ExtraData
struct  Sender
struct  SignalVector
struct  TaggedSignalVector

Public Types

typedef void(* StaticMetaCallFunction) (QObject *, QMetaObject::Call, int, void **)
using ConnectionDataPointer = QExplicitlySharedDataPointer<ConnectionData>

Public Member Functions

void ensureExtraData ()
void setObjectNameWithoutBindings (const QString &name)
 QObjectPrivate (decltype(QObjectPrivateVersion) version=QObjectPrivateVersion)
virtual ~QObjectPrivate ()
void deleteChildren ()
void clearBindingStorage ()
void setParent_helper (QObject *)
void moveToThread_helper ()
void setThreadData_helper (QThreadData *currentData, QThreadData *targetData, QBindingStatus *status)
QObjectList receiverList (const char *signal) const
void ensureConnectionData ()
void addConnection (int signal, Connection *c)
int signalIndex (const char *signalName, const QMetaObject **meta=nullptr) const
bool isSignalConnected (uint signalIdx, bool checkDeclarative=true) const
bool maybeSignalConnected (uint signalIndex) const
bool isDeclarativeSignalConnected (uint signalIdx) const
void connectNotify (const QMetaMethod &signal)
void disconnectNotify (const QMetaMethod &signal)
void reinitBindingStorageAfterThreadMove ()
virtual std::string flagsForDumping () const
virtual void writeToDebugStream (QDebug &) const
QtPrivate::QPropertyAdaptorSlotObject * getPropertyAdaptorSlotObject (const QMetaProperty &property)
Public Member Functions inherited from QObjectData
 QObjectData ()=default
virtual ~QObjectData ()=0
const QMetaObject * dynamicMetaObject () const

Static Public Member Functions

static bool removeConnection (Connection *c)
static QObjectPrivate * get (QObject *o)
static const QObjectPrivate * get (const QObject *o)
template<typename Func1, typename Func2>
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiverPrivate, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiverPrivate, Func2 slot)
static QMetaObject::Connection connectImpl (const QObject *sender, int signal_index, const QObject *receiver, void **slot, QtPrivate::QSlotObjectBase *slotObj, int type, const int *types, const QMetaObject *senderMetaObject)
static QMetaObject::Connection connect (const QObject *sender, int signal_index, QtPrivate::QSlotObjectBase *slotObj, Qt::ConnectionType type)
static QMetaObject::Connection connect (const QObject *sender, int signal_index, const QObject *receiver, QtPrivate::QSlotObjectBase *slotObj, Qt::ConnectionType type)
static bool disconnect (const QObject *sender, int signal_index, void **slot)
static bool disconnect (const QObject *sender, int signal_index, const QObject *receiver, void **slot)

Public Attributes

ExtraData * extraData
QAtomicPointer< QThreadData > threadData
QAtomicPointer< ConnectionData > connections
union { 
   QObject *   currentChildBeingDeleted 
   QAbstractDeclarativeData *   declarativeData 
}; 
QAtomicPointer< QtSharedPointer::ExternalRefCountData > sharedRefcount
Public Attributes inherited from QObjectData
QObject * q_ptr
QObject * parent
QObjectList children
uint isWidget: 1
uint blockSig: 1
uint wasDeleted: 1
uint isDeletingChildren: 1
uint sendChildEvents: 1
uint receiveChildEvents: 1
uint isWindow: 1
uint deleteLaterCalled: 1
uint isQuickItem: 1
uint willBeWidget: 1
uint wasWidget: 1
uint receiveParentEvents: 1
uint unused: 20
QAtomicInt postedEvents
QDynamicMetaObjectData * metaObject
QBindingStorage bindingStorage

Detailed Description

Definition at line 84 of file qobject_p.h.

Member Typedef Documentation

◆ ConnectionDataPointer

using QObjectPrivate::ConnectionDataPointer = QExplicitlySharedDataPointer<ConnectionData>

Definition at line 215 of file qobject_p.h.

◆ StaticMetaCallFunction

typedef void(* QObjectPrivate::StaticMetaCallFunction) (QObject *, QMetaObject::Call, int, void **)

Definition at line 120 of file qobject_p.h.

Constructor & Destructor Documentation

◆ QObjectPrivate()

QObjectPrivate::QObjectPrivate ( decltype(QObjectPrivateVersion) version = QObjectPrivateVersion)

Definition at line 164 of file qobject.cpp.

◆ ~QObjectPrivate()

QObjectPrivate::~QObjectPrivate ( )
virtual

Definition at line 187 of file qobject.cpp.

Member Function Documentation

◆ addConnection()

void QObjectPrivate::addConnection ( int signal,
Connection * c )
inline

Add the connection c to the list of connections of the sender's object for the specified signal

The signalSlotLock() of the sender and receiver must be locked while calling this function

Will also add the connection in the sender's list of the receiver.

Definition at line 276 of file qobject.cpp.

◆ clearBindingStorage()

void QObjectPrivate::clearBindingStorage ( )

Definition at line 1015 of file qobject.cpp.

◆ connect() [1/3]

QMetaObject::Connection QObjectPrivate::connect ( const QObject * sender,
int signal_index,
const QObject * receiver,
QtPrivate::QSlotObjectBase * slotObjRaw,
Qt::ConnectionType type )
static

Used by QML to connect a signal by index to a slot implemented in JavaScript (wrapped in a custom QSlotObjectBase subclass).

This is an overload that should be used when sender and receiver are different objects.

The signal_index is an index relative to the number of methods.

Definition at line 5680 of file qobject.cpp.

◆ connect() [2/3]

QMetaObject::Connection QObjectPrivate::connect ( const QObject * sender,
int signal_index,
QtPrivate::QSlotObjectBase * slotObj,
Qt::ConnectionType type )
static

Used by QML to connect a signal by index to a slot implemented in JavaScript (wrapped in a custom QSlotObjectBase subclass).

This version of connect assumes that sender and receiver are the same object.

The signal_index is an index relative to the number of methods.

Definition at line 5665 of file qobject.cpp.

◆ connect() [3/3]

template<typename Func1, typename Func2>
QMetaObject::Connection QObjectPrivate::connect ( const typename QtPrivate::FunctionPointer< Func1 >::Object * sender,
Func1 signal,
const typename QtPrivate::FunctionPointer< Func2 >::Object * receiverPrivate,
Func2 slot,
Qt::ConnectionType type = Qt::AutoConnection )
inlinestatic

Definition at line 287 of file qobject_p.h.

◆ connectImpl()

QMetaObject::Connection QObjectPrivate::connectImpl ( const QObject * sender,
int signal_index,
const QObject * receiver,
void ** slot,
QtPrivate::QSlotObjectBase * slotObjRaw,
int type,
const int * types,
const QMetaObject * senderMetaObject )
static

Internal version of connect used by the template version of QObject::connect (called via connectImpl) and also used by the QObjectPrivate::connect version used by QML. The signal_index is expected to be relative to the number of signals.

Definition at line 5476 of file qobject.cpp.

◆ connectNotify()

void QObjectPrivate::connectNotify ( const QMetaMethod & signal)
inline

Definition at line 234 of file qobject_p.h.

◆ deleteChildren()

void QObjectPrivate::deleteChildren ( )

Definition at line 2268 of file qobject.cpp.

◆ disconnect() [1/3]

bool QObjectPrivate::disconnect ( const QObject * sender,
int signal_index,
const QObject * receiver,
void ** slot )
static

Used by QML to disconnect a signal by index that's connected to a slot implemented in JavaScript (wrapped in a custom QSlotObjectBase subclass) In the QML case the slot is not a pointer to a pointer to the function to disconnect, but instead it is a pointer to an array of internal values required for the disconnect.

This is an overload that should be used when sender and receiver are different objects.

Definition at line 5722 of file qobject.cpp.

◆ disconnect() [2/3]

bool QObjectPrivate::disconnect ( const QObject * sender,
int signal_index,
void ** slot )
static

Used by QML to disconnect a signal by index that's connected to a slot implemented in JavaScript (wrapped in a custom QSlotObjectBase subclass) In the QML case the slot is not a pointer to a pointer to the function to disconnect, but instead it is a pointer to an array of internal values required for the disconnect.

This version of disconnect assumes that sender and receiver are the same object.

Definition at line 5705 of file qobject.cpp.

◆ disconnect() [3/3]

template<typename Func1, typename Func2>
bool QObjectPrivate::disconnect ( const typename QtPrivate::FunctionPointer< Func1 >::Object * sender,
Func1 signal,
const typename QtPrivate::FunctionPointer< Func2 >::Object * receiverPrivate,
Func2 slot )
inlinestatic

Definition at line 316 of file qobject_p.h.

◆ disconnectNotify()

void QObjectPrivate::disconnectNotify ( const QMetaMethod & signal)
inline

Definition at line 239 of file qobject_p.h.

◆ ensureConnectionData()

void QObjectPrivate::ensureConnectionData ( )
inline

The signalSlotLock() of the sender must be locked while calling this function

Definition at line 257 of file qobject.cpp.

◆ ensureExtraData()

void QObjectPrivate::ensureExtraData ( )
inline

Definition at line 113 of file qobject_p.h.

◆ flagsForDumping()

std::string QObjectPrivate::flagsForDumping ( ) const
virtual

Reimplemented in QWidgetPrivate.

Definition at line 4599 of file qobject.cpp.

◆ get() [1/2]

const QObjectPrivate * QObjectPrivate::get ( const QObject * o)
inlinestatic

Definition at line 161 of file qobject_p.h.

◆ get() [2/2]

QObjectPrivate * QObjectPrivate::get ( QObject * o)
inlinestatic

Definition at line 160 of file qobject_p.h.

◆ getPropertyAdaptorSlotObject()

QtPrivate::QPropertyAdaptorSlotObject * QObjectPrivate::getPropertyAdaptorSlotObject ( const QMetaProperty & property)

Used by QPropertyAdaptorSlotObject to get an existing instance for a property, if available

Definition at line 5781 of file qobject.cpp.

◆ isDeclarativeSignalConnected()

bool QObjectPrivate::isDeclarativeSignalConnected ( uint signalIdx) const
inline

Definition at line 228 of file qobject_p.h.

◆ isSignalConnected()

bool QObjectPrivate::isSignalConnected ( uint signalIndex,
bool checkDeclarative = true ) const

Returns true if the signal with index signal_index from object sender is connected.

signal_index must be the index returned by QObjectPrivate::signalIndex;

Definition at line 423 of file qobject.cpp.

◆ maybeSignalConnected()

bool QObjectPrivate::maybeSignalConnected ( uint signalIndex) const

Definition at line 449 of file qobject.cpp.

◆ moveToThread_helper()

void QObjectPrivate::moveToThread_helper ( )

Definition at line 1781 of file qobject.cpp.

◆ receiverList()

QObjectList QObjectPrivate::receiverList ( const char * signal) const

Definition at line 233 of file qobject.cpp.

◆ reinitBindingStorageAfterThreadMove()

void QObjectPrivate::reinitBindingStorageAfterThreadMove ( )

Definition at line 468 of file qobject.cpp.

◆ removeConnection()

bool QObjectPrivate::removeConnection ( QObjectPrivate::Connection * c)
inlinestatic

\threadsafe

Definition at line 5736 of file qobject.cpp.

◆ setObjectNameWithoutBindings()

void QObjectPrivate::setObjectNameWithoutBindings ( const QString & name)

Only use if you know nothing can be bound yet. Usually used for internal objects that do get names.

Definition at line 1333 of file qobject.cpp.

◆ setParent_helper()

void QObjectPrivate::setParent_helper ( QObject * o)

Definition at line 2285 of file qobject.cpp.

◆ setThreadData_helper()

void QObjectPrivate::setThreadData_helper ( QThreadData * currentData,
QThreadData * targetData,
QBindingStatus * status )

Definition at line 1793 of file qobject.cpp.

◆ signalIndex()

int QObjectPrivate::signalIndex ( const char * signalName,
const QMetaObject ** meta = nullptr ) const

Returns the signal index used in the internal connections->receivers vector.

It is different from QMetaObject::indexOfSignal(): indexOfSignal is the same as indexOfMethod while QObjectPrivate::signalIndex is smaller because it doesn't give index to slots.

If meta is not \nullptr, it is set to the meta-object where the signal was found.

Definition at line 4453 of file qobject.cpp.

◆ writeToDebugStream()

void QObjectPrivate::writeToDebugStream ( QDebug & dbg) const
virtual

Reimplemented in QFilePrivate, and QQuickShapePathPrivate.

Definition at line 4707 of file qobject.cpp.

Member Data Documentation

◆ [union]

union { ... } QObjectPrivate

◆ connections

QAtomicPointer<ConnectionData> QObjectPrivate::connections

Definition at line 216 of file qobject_p.h.

◆ currentChildBeingDeleted

QObject* QObjectPrivate::currentChildBeingDeleted

Definition at line 219 of file qobject_p.h.

◆ declarativeData

QAbstractDeclarativeData* QObjectPrivate::declarativeData

Definition at line 220 of file qobject_p.h.

◆ extraData

ExtraData* QObjectPrivate::extraData
mutable

Definition at line 207 of file qobject_p.h.

◆ sharedRefcount

QAtomicPointer<QtSharedPointer::ExternalRefCountData> QObjectPrivate::sharedRefcount

Definition at line 225 of file qobject_p.h.

◆ threadData

QAtomicPointer<QThreadData> QObjectPrivate::threadData

Definition at line 213 of file qobject_p.h.

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