diff options
author | Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org> | 2019-05-26 23:04:40 +0200 |
---|---|---|
committer | Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org> | 2019-05-26 23:04:41 +0200 |
commit | 3ecdd85b2c7b8d56c4fd1a12a6cbaab663024ddb (patch) | |
tree | 255dae23f41c011b28167efe4ac8035384ef0346 /src/qml/qml/qqml.h | |
parent | fb4c12a9db86a4b886058cc937c3c20b798bd2e2 (diff) | |
parent | 3e716029ae61bf4c7bb33643ac331156e70e34f1 (diff) |
Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: I208cd36d2b7add94f36e4d86cf0c790a1e4a7e86
Diffstat (limited to 'src/qml/qml/qqml.h')
-rw-r--r-- | src/qml/qml/qqml.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/qml/qml/qqml.h b/src/qml/qml/qqml.h index 42cf723284..6bd66464b5 100644 --- a/src/qml/qml/qqml.h +++ b/src/qml/qml/qqml.h @@ -606,9 +606,12 @@ Q_QML_EXPORT void qmlRegisterModule(const char *uri, int versionMajor, int versi template<typename T> QObject *qmlAttachedPropertiesObject(const QObject *obj, bool create = true) { - QObject *mutableObj = const_cast<QObject *>(obj); - return qmlAttachedPropertiesObject( - mutableObj, qmlAttachedPropertiesFunction(mutableObj, &T::staticMetaObject), create); + // We don't need a concrete object to resolve the function. As T is a C++ type, it and all its + // super types should be registered as CppType (or not at all). We only need the object and its + // QML engine to resolve composite types. Therefore, the function is actually a static property + // of the C++ type system and we can cache it here for improved performance on further lookups. + static const auto func = qmlAttachedPropertiesFunction(nullptr, &T::staticMetaObject); + return qmlAttachedPropertiesObject(const_cast<QObject *>(obj), func, create); } Q_QML_EXPORT void qmlRegisterBaseTypes(const char *uri, int versionMajor, int versionMinor); |