diff options
Diffstat (limited to 'src/corelib/kernel/qobject.cpp')
| -rw-r--r-- | src/corelib/kernel/qobject.cpp | 142 |
1 files changed, 87 insertions, 55 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp index b1de62bceb..1b05962c07 100644 --- a/src/corelib/kernel/qobject.cpp +++ b/src/corelib/kernel/qobject.cpp @@ -147,12 +147,13 @@ static inline QMutex *signalSlotLock(const QObject *o) uint(quintptr(o)) % sizeof(_q_ObjectMutexPool)/sizeof(QBasicMutex)]); } -// ### Qt >= 5.6, remove qt_add/removeObject +#if QT_VERSION < 0x60000 extern "C" Q_CORE_EXPORT void qt_addObject(QObject *) {} extern "C" Q_CORE_EXPORT void qt_removeObject(QObject *) {} +#endif struct QConnectionSenderSwitcher { QObject *receiver; @@ -754,30 +755,6 @@ void QMetaCallEvent::placeMetaCall(QObject *object) \sa {Object Trees & Ownership} */ -/*! - \relates QObject - - Returns a pointer to the object named \a name that inherits \a - type and with a given \a parent. - - Returns 0 if there is no such child. - - \snippet code/src_corelib_kernel_qobject.cpp 0 -*/ - -void *qt_find_obj_child(QObject *parent, const char *type, const QString &name) -{ - QObjectList list = parent->children(); - if (list.size() == 0) return 0; - for (int i = 0; i < list.size(); ++i) { - QObject *obj = list.at(i); - if (name == obj->objectName() && obj->inherits(type)) - return obj; - } - return 0; -} - - /***************************************************************************** QObject member functions *****************************************************************************/ @@ -835,7 +812,9 @@ QObject::QObject(QObject *parent) QT_RETHROW; } } +#if QT_VERSION < 0x60000 qt_addObject(this); +#endif if (Q_UNLIKELY(qtHookData[QHooks::AddQObject])) reinterpret_cast<QHooks::AddQObjectCallback>(qtHookData[QHooks::AddQObject])(this); } @@ -868,7 +847,9 @@ QObject::QObject(QObjectPrivate &dd, QObject *parent) QT_RETHROW; } } +#if QT_VERSION < 0x60000 qt_addObject(this); +#endif if (Q_UNLIKELY(qtHookData[QHooks::AddQObject])) reinterpret_cast<QHooks::AddQObjectCallback>(qtHookData[QHooks::AddQObject])(this); } @@ -1040,7 +1021,9 @@ QObject::~QObject() if (!d->children.isEmpty()) d->deleteChildren(); +#if QT_VERSION < 0x60000 qt_removeObject(this); +#endif if (Q_UNLIKELY(qtHookData[QHooks::RemoveQObject])) reinterpret_cast<QHooks::RemoveQObjectCallback>(qtHookData[QHooks::RemoveQObject])(this); @@ -1651,6 +1634,45 @@ int QObject::startTimer(int interval, Qt::TimerType timerType) } /*! + \since 5.9 + \overload + \fn int QObject::startTimer(std::chrono::milliseconds time, Qt::TimerType timerType) + + Starts a timer and returns a timer identifier, or returns zero if + it could not start a timer. + + A timer event will occur every \a time interval until killTimer() + is called. If \a time is equal to \c{std::chrono::duration::zero()}, + then the timer event occurs once every time there are no more window + system events to process. + + The virtual timerEvent() function is called with the QTimerEvent + event parameter class when a timer event occurs. Reimplement this + function to get timer events. + + If multiple timers are running, the QTimerEvent::timerId() can be + used to find out which timer was activated. + + Example: + + \snippet code/src_corelib_kernel_qobject.cpp 8 + + Note that QTimer's accuracy depends on the underlying operating system and + hardware. The \a timerType argument allows you to customize the accuracy of + the timer. See Qt::TimerType for information on the different timer types. + Most platforms support an accuracy of 20 milliseconds; some provide more. + If Qt is unable to deliver the requested number of timer events, it will + silently discard some. + + The QTimer class provides a high-level programming interface with + single-shot timers and timer signals instead of events. There is + also a QBasicTimer class that is more lightweight than QTimer and + less clumsy than using timer IDs directly. + + \sa timerEvent(), killTimer(), QTimer::singleShot() +*/ + +/*! Kills the timer with timer identifier, \a id. The timer identifier is returned by startTimer() when a timer @@ -2631,7 +2653,8 @@ static inline void check_and_warn_compat(const QMetaObject *sender, const QMetaM call qRegisterMetaType() to register the data type before you establish the connection. - \sa disconnect(), sender(), qRegisterMetaType(), Q_DECLARE_METATYPE() + \sa disconnect(), sender(), qRegisterMetaType(), Q_DECLARE_METATYPE(), + {Differences between String-Based and Functor-Based Connections} */ QMetaObject::Connection QObject::connect(const QObject *sender, const char *signal, const QObject *receiver, const char *method, @@ -3944,9 +3967,8 @@ QList<QByteArray> QObject::dynamicPropertyNames() const QObject debugging output routines. *****************************************************************************/ -static void dumpRecursive(int level, QObject *object) +static void dumpRecursive(int level, const QObject *object) { -#if defined(QT_DEBUG) if (object) { QByteArray buf; buf.fill(' ', level / 2 * 8); @@ -3975,45 +3997,65 @@ static void dumpRecursive(int level, QObject *object) dumpRecursive(level+1, children.at(i)); } } -#else - Q_UNUSED(level) - Q_UNUSED(object) -#endif } /*! - Dumps a tree of children to the debug output. + \overload + \obsolete - This function is useful for debugging, but does nothing if the - library has been compiled in release mode (i.e. without debugging - information). + Dumps a tree of children to the debug output. \sa dumpObjectInfo() */ void QObject::dumpObjectTree() { + const_cast<const QObject *>(this)->dumpObjectTree(); +} + +/*! + Dumps a tree of children to the debug output. + + \note before Qt 5.9, this function was not const. + + \sa dumpObjectInfo() +*/ + +void QObject::dumpObjectTree() const +{ dumpRecursive(0, this); } /*! + \overload + \obsolete + Dumps information about signal connections, etc. for this object to the debug output. - This function is useful for debugging, but does nothing if the - library has been compiled in release mode (i.e. without debugging - information). - \sa dumpObjectTree() */ void QObject::dumpObjectInfo() { -#if defined(QT_DEBUG) + const_cast<const QObject *>(this)->dumpObjectInfo(); +} + +/*! + Dumps information about signal connections, etc. for this object + to the debug output. + + \note before Qt 5.9, this function was not const. + + \sa dumpObjectTree() +*/ + +void QObject::dumpObjectInfo() const +{ qDebug("OBJECT %s::%s", metaObject()->className(), objectName().isEmpty() ? "unnamed" : objectName().toLocal8Bit().data()); - Q_D(QObject); + Q_D(const QObject); QMutexLocker locker(signalSlotLock(this)); // first, look for connections where this object is the sender @@ -4069,7 +4111,6 @@ void QObject::dumpObjectInfo() } else { qDebug(" <None>"); } -#endif } #ifndef QT_NO_USERDATA @@ -4616,11 +4657,9 @@ void qDeleteInEventHandler(QObject *o) Overloaded functions can be resolved with help of \l qOverload. - \note The number of arguments in the signal or slot are limited to 6 if - the compiler does not support C++11 variadic templates. + \sa {Differences between String-Based and Functor-Based Connections} */ - /*! \fn QMetaObject::Connection QObject::connect(const QObject *sender, PointerToMemberFunction signal, Functor functor) @@ -4643,7 +4682,7 @@ void qDeleteInEventHandler(QObject *o) \snippet code/src_corelib_kernel_qobject.cpp 45 - If your compiler support C++11 lambda expressions, you can use them: + Lambda expressions can also be used: \snippet code/src_corelib_kernel_qobject.cpp 46 @@ -4653,9 +4692,6 @@ void qDeleteInEventHandler(QObject *o) Overloaded functions can be resolved with help of \l qOverload. - \note If the compiler does not support C++11 variadic templates, the number - of arguments in the signal or slot are limited to 6, and the functor object - must not have an overloaded or templated operator(). */ /*! @@ -4686,7 +4722,7 @@ void qDeleteInEventHandler(QObject *o) \snippet code/src_corelib_kernel_qobject.cpp 50 - If your compiler support C++11 lambda expressions, you can use them: + Lambda expressions can also be used: \snippet code/src_corelib_kernel_qobject.cpp 51 @@ -4696,10 +4732,6 @@ void qDeleteInEventHandler(QObject *o) are still alive when the signal is emitted. Overloaded functions can be resolved with help of \l qOverload. - - \note If the compiler does not support C++11 variadic templates, the number - of arguments in the signal or slot are limited to 6, and the functor object - must not have an overloaded or templated operator(). */ /*! |