diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/kernel/qmetatype.cpp | 22 | ||||
| -rw-r--r-- | src/corelib/kernel/qmetatype.h | 22 | ||||
| -rw-r--r-- | src/corelib/kernel/qobjectdefs.h | 1 |
3 files changed, 38 insertions, 7 deletions
diff --git a/src/corelib/kernel/qmetatype.cpp b/src/corelib/kernel/qmetatype.cpp index 63f181cdac..ee86867249 100644 --- a/src/corelib/kernel/qmetatype.cpp +++ b/src/corelib/kernel/qmetatype.cpp @@ -283,10 +283,11 @@ struct DefinedTypesFilter { \value MovableType An instance of a type having this attribute can be safely moved by memcpy. \omitvalue SharedPointerToQObject \omitvalue IsEnumeration - \omitvalue PointerToQObject + \value PointerToQObject This type is a pointer to a derived of QObject \omitvalue WeakPointerToQObject \omitvalue TrackingPointerToQObject \omitvalue WasDeclaredAsMetaType + \value IsGadget This type is a Q_GADGET and it's corresponding QMetaObject can be accessed with QMetaType::metaObject Since 5.5. */ /*! @@ -363,8 +364,19 @@ struct DefinedTypesFilter { /*! \fn const QMetaObject *QMetaType::metaObject() const - \since 5.0 - \internal + \since 5.5 + + return a QMetaObject relative to this type. + + If the type is a pointer type to a subclass of QObject, flags contains + QMetaType::PointerToQObject and this function returns the corresponding QMetaObject. This can + be used to in combinaison with QMetaObject::construct to create QObject of this type. + + If the type is a Q_GADGET, flags contains QMetaType::IsGadget, and this function returns its + QMetaObject. This can be used to retrieve QMetaMethod and QMetaProperty and use them on a + pointer of this type. (given by QVariant::data for example) + + \sa QMetaType::metaObjectForType(), QMetaType::flags() */ /*! @@ -2025,7 +2037,9 @@ private: /*! \since 5.0 - Returns QMetaObject of a given \a type, if the \a type is a pointer to type derived from QObject. + returns QMetaType::metaObject for \a type + + \sa metaObject() */ const QMetaObject *QMetaType::metaObjectForType(int type) { diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h index 947bf77796..dc7e7e0395 100644 --- a/src/corelib/kernel/qmetatype.h +++ b/src/corelib/kernel/qmetatype.h @@ -1,6 +1,7 @@ /**************************************************************************** ** ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Copyright (C) 2014 Olivier Goffart <ogoffart@woboq.com> ** Contact: http://www.qt-project.org/legal ** ** This file is part of the QtCore module of the Qt Toolkit. @@ -435,7 +436,8 @@ public: SharedPointerToQObject = 0x20, WeakPointerToQObject = 0x40, TrackingPointerToQObject = 0x80, - WasDeclaredAsMetaType = 0x100 + WasDeclaredAsMetaType = 0x100, + IsGadget = 0x200 }; Q_DECLARE_FLAGS(TypeFlags, TypeFlag) @@ -1335,14 +1337,27 @@ namespace QtPrivate enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(yes_type) }; }; - template<typename T, bool = IsPointerToTypeDerivedFromQObject<T>::Value> + template<typename T> + struct IsGadgetHelper + { + template<typename X> static typename X::QtGadgetHelper *checkType(X*); + static char checkType(void*); + enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(void*) }; + }; + + template<typename T, typename Enable = void> struct MetaObjectForType { static inline const QMetaObject *value() { return 0; } }; template<typename T> - struct MetaObjectForType<T*, /* isPointerToTypeDerivedFromQObject = */ true> + struct MetaObjectForType<T*, typename QEnableIf<IsPointerToTypeDerivedFromQObject<T*>::Value>::Type> + { + static inline const QMetaObject *value() { return &T::staticMetaObject; } + }; + template<typename T> + struct MetaObjectForType<T, typename QEnableIf<IsGadgetHelper<T>::Value>::Type> { static inline const QMetaObject *value() { return &T::staticMetaObject; } }; @@ -1553,6 +1568,7 @@ namespace QtPrivate { | (IsWeakPointerToTypeDerivedFromQObject<T>::Value ? QMetaType::WeakPointerToQObject : 0) | (IsTrackingPointerToTypeDerivedFromQObject<T>::Value ? QMetaType::TrackingPointerToQObject : 0) | (Q_IS_ENUM(T) ? QMetaType::IsEnumeration : 0) + | (IsGadgetHelper<T>::Value ? QMetaType::IsGadget : 0) }; }; diff --git a/src/corelib/kernel/qobjectdefs.h b/src/corelib/kernel/qobjectdefs.h index 38ee31b250..a495bce7ec 100644 --- a/src/corelib/kernel/qobjectdefs.h +++ b/src/corelib/kernel/qobjectdefs.h @@ -159,6 +159,7 @@ private: \ #define Q_GADGET \ public: \ static const QMetaObject staticMetaObject; \ + typedef void QtGadgetHelper; \ private: \ Q_DECL_HIDDEN_STATIC_METACALL static void qt_static_metacall(QObject *, QMetaObject::Call, int, void **); #endif // QT_NO_META_MACROS |