diff options
Diffstat (limited to 'lib/qt_connection_util.h')
| -rw-r--r-- | lib/qt_connection_util.h | 146 |
1 files changed, 72 insertions, 74 deletions
diff --git a/lib/qt_connection_util.h b/lib/qt_connection_util.h index c2bde8df..94c1ec60 100644 --- a/lib/qt_connection_util.h +++ b/lib/qt_connection_util.h @@ -13,7 +13,7 @@ * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #pragma once @@ -23,85 +23,83 @@ #include <QtCore/QPointer> namespace QMatrixClient { - namespace _impl { - template <typename SenderT, typename SignalT, - typename ContextT, typename... ArgTs> - inline QMetaObject::Connection connectUntil( - SenderT* sender, SignalT signal, ContextT* context, - std::function<bool(ArgTs...)> slot, Qt::ConnectionType connType) - { - // See https://bugreports.qt.io/browse/QTBUG-60339 +namespace _impl { + template <typename SenderT, typename SignalT, typename ContextT, typename... ArgTs> + inline QMetaObject::Connection + connectUntil(SenderT* sender, SignalT signal, ContextT* context, + std::function<bool(ArgTs...)> slot, Qt::ConnectionType connType) + { + // See https://bugreports.qt.io/browse/QTBUG-60339 #if QT_VERSION < QT_VERSION_CHECK(5, 10, 0) - auto pc = std::make_shared<QMetaObject::Connection>(); + auto pc = std::make_shared<QMetaObject::Connection>(); #else - auto pc = std::make_unique<QMetaObject::Connection>(); + auto pc = std::make_unique<QMetaObject::Connection>(); #endif - auto& c = *pc; // Resolve a reference before pc is moved to lambda - c = QObject::connect(sender, signal, context, - [pc=std::move(pc),slot] (ArgTs... args) { - Q_ASSERT(*pc); // If it's been triggered, it should exist - if (slot(std::forward<ArgTs>(args)...)) - QObject::disconnect(*pc); - }, connType); - return c; - } + auto& c = *pc; // Resolve a reference before pc is moved to lambda + c = QObject::connect( + sender, signal, context, + [pc = std::move(pc), slot](ArgTs... args) { + Q_ASSERT(*pc); // If it's been triggered, it should exist + if (slot(std::forward<ArgTs>(args)...)) + QObject::disconnect(*pc); + }, + connType); + return c; } +} // namespace _impl - template <typename SenderT, typename SignalT, - typename ContextT, typename FunctorT> - inline auto connectUntil(SenderT* sender, SignalT signal, ContextT* context, - const FunctorT& slot, - Qt::ConnectionType connType = Qt::AutoConnection) - { - return _impl::connectUntil(sender, signal, context, - typename function_traits<FunctorT>::function_type(slot), - connType); - } +template <typename SenderT, typename SignalT, typename ContextT, typename FunctorT> +inline auto connectUntil(SenderT* sender, SignalT signal, ContextT* context, + const FunctorT& slot, + Qt::ConnectionType connType = Qt::AutoConnection) +{ + return _impl::connectUntil( + sender, signal, context, + typename function_traits<FunctorT>::function_type(slot), connType); +} - /** Create a single-shot connection that triggers on the signal and - * then self-disconnects - * - * Only supports DirectConnection type. - */ - template <typename SenderT, typename SignalT, - typename ReceiverT, typename SlotT> - inline auto connectSingleShot(SenderT* sender, SignalT signal, - ReceiverT* receiver, SlotT slot) - { - QMetaObject::Connection connection; - connection = QObject::connect(sender, signal, receiver, slot, - Qt::DirectConnection); - Q_ASSERT(connection); - QObject::connect(sender, signal, receiver, - [connection] { QObject::disconnect(connection); }, - Qt::DirectConnection); - return connection; - } +/** Create a single-shot connection that triggers on the signal and + * then self-disconnects + * + * Only supports DirectConnection type. + */ +template <typename SenderT, typename SignalT, typename ReceiverT, typename SlotT> +inline auto connectSingleShot(SenderT* sender, SignalT signal, + ReceiverT* receiver, SlotT slot) +{ + QMetaObject::Connection connection; + connection = QObject::connect(sender, signal, receiver, slot, + Qt::DirectConnection); + Q_ASSERT(connection); + QObject::connect( + sender, signal, receiver, + [connection] { QObject::disconnect(connection); }, Qt::DirectConnection); + return connection; +} - /** A guard pointer that disconnects an interested object upon destruction - * It's almost QPointer<> except that you have to initialise it with one - * more additional parameter - a pointer to a QObject that will be - * disconnected from signals of the underlying pointer upon the guard's - * destruction. - */ - template <typename T> - class ConnectionsGuard : public QPointer<T> +/** A guard pointer that disconnects an interested object upon destruction + * It's almost QPointer<> except that you have to initialise it with one + * more additional parameter - a pointer to a QObject that will be + * disconnected from signals of the underlying pointer upon the guard's + * destruction. + */ +template <typename T> +class ConnectionsGuard : public QPointer<T> { +public: + ConnectionsGuard(T* publisher, QObject* subscriber) + : QPointer<T>(publisher), subscriber(subscriber) + {} + ~ConnectionsGuard() { - public: - ConnectionsGuard(T* publisher, QObject* subscriber) - : QPointer<T>(publisher), subscriber(subscriber) - { } - ~ConnectionsGuard() - { - if (*this) - (*this)->disconnect(subscriber); - } - ConnectionsGuard(ConnectionsGuard&&) = default; - ConnectionsGuard& operator=(ConnectionsGuard&&) = default; - Q_DISABLE_COPY(ConnectionsGuard) - using QPointer<T>::operator=; + if (*this) + (*this)->disconnect(subscriber); + } + ConnectionsGuard(ConnectionsGuard&&) = default; + ConnectionsGuard& operator=(ConnectionsGuard&&) = default; + Q_DISABLE_COPY(ConnectionsGuard) + using QPointer<T>::operator=; - private: - QObject* subscriber; - }; -} +private: + QObject* subscriber; +}; +} // namespace QMatrixClient |