diff options
Diffstat (limited to 'src/corelib/kernel/qobject.h')
-rw-r--r-- | src/corelib/kernel/qobject.h | 65 |
1 files changed, 20 insertions, 45 deletions
diff --git a/src/corelib/kernel/qobject.h b/src/corelib/kernel/qobject.h index b39eefa795..c06f702b30 100644 --- a/src/corelib/kernel/qobject.h +++ b/src/corelib/kernel/qobject.h @@ -1,32 +1,38 @@ /**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. +** Copyright (C) 2016 The Qt Company Ltd. ** Copyright (C) 2013 Olivier Goffart <ogoffart@woboq.com> -** Contact: http://www.qt.io/licensing/ +** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL21$ +** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 or version 3 as published by the Free -** Software Foundation and appearing in the file LICENSE.LGPLv21 and -** LICENSE.LGPLv3 included in the packaging of this file. Please review the -** following information to ensure the GNU Lesser General Public License -** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** -** As a special exception, The Qt Company gives you certain additional -** rights. These rights are described in The Qt Company LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** @@ -293,7 +299,6 @@ public: connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot, Qt::ConnectionType type = Qt::AutoConnection) { -#if defined (Q_COMPILER_DECLTYPE) && defined (Q_COMPILER_VARIADIC_TEMPLATES) typedef QtPrivate::FunctionPointer<Func1> SignalType; const int FunctorArgumentCount = QtPrivate::ComputeFunctorArgumentCount<Func2 , typename SignalType::Arguments>::Value; @@ -301,36 +306,6 @@ public: "Signal and slot arguments are not compatible."); const int SlotArgumentCount = (FunctorArgumentCount >= 0) ? FunctorArgumentCount : 0; typedef typename QtPrivate::FunctorReturnType<Func2, typename QtPrivate::List_Left<typename SignalType::Arguments, SlotArgumentCount>::Value>::Value SlotReturnType; -#else - // Without variadic template, we don't detect the best overload of operator(). We just - // assume there is only one simple operator() and connect to &Func2::operator() - - /* If you get an error such as: - couldn't deduce template parameter 'Func2Operator' - or - cannot resolve address of overloaded function - It means the functor does not have a single operator(). - Functors with overloaded or templated operator() are only supported if the compiler supports - C++11 variadic templates - */ -#ifndef Q_COMPILER_DECLTYPE //Workaround the lack of decltype using another function as indirection - return connect_functor(sender, signal, context, slot, &Func2::operator(), type); } - template <typename Func1, typename Func2, typename Func2Operator> - static inline QMetaObject::Connection connect_functor(const QObject *sender, Func1 signal, const QObject *context, - Func2 slot, Func2Operator, Qt::ConnectionType type) { - typedef QtPrivate::FunctionPointer<Func2Operator> SlotType ; -#else - typedef QtPrivate::FunctionPointer<decltype(&Func2::operator())> SlotType ; -#endif - typedef QtPrivate::FunctionPointer<Func1> SignalType; - typedef typename SlotType::ReturnType SlotReturnType; - const int SlotArgumentCount = SlotType::ArgumentCount; - - Q_STATIC_ASSERT_X(int(SignalType::ArgumentCount) >= SlotArgumentCount, - "The slot requires more arguments than the signal provides."); - Q_STATIC_ASSERT_X((QtPrivate::CheckCompatibleArguments<typename SignalType::Arguments, typename SlotType::Arguments>::value), - "Signal and slot arguments are not compatible."); -#endif Q_STATIC_ASSERT_X((QtPrivate::AreArgumentsCompatible<SlotReturnType, typename SignalType::ReturnType>::value), "Return type of the slot is not compatible with the return type of the signal."); |