diff options
Diffstat (limited to 'sources/pyside2/PySide2/QtCore/glue/qobject_connect.cpp')
| -rw-r--r-- | sources/pyside2/PySide2/QtCore/glue/qobject_connect.cpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/sources/pyside2/PySide2/QtCore/glue/qobject_connect.cpp b/sources/pyside2/PySide2/QtCore/glue/qobject_connect.cpp new file mode 100644 index 000000000..5690112ca --- /dev/null +++ b/sources/pyside2/PySide2/QtCore/glue/qobject_connect.cpp @@ -0,0 +1,228 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of PySide2. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 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 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. +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +static bool isDecorator(PyObject* method, PyObject* self) +{ + Shiboken::AutoDecRef methodName(PyObject_GetAttrString(method, "__name__")); + if (!PyObject_HasAttr(self, methodName)) + return true; + Shiboken::AutoDecRef otherMethod(PyObject_GetAttr(self, methodName)); + return reinterpret_cast<PyMethodObject*>(otherMethod.object())->im_func != \ + reinterpret_cast<PyMethodObject*>(method)->im_func; +} + +static bool getReceiver(QObject *source, const char* signal, PyObject* callback, QObject** receiver, PyObject** self, QByteArray* callbackSig) +{ + bool forceGlobalReceiver = false; + if (PyMethod_Check(callback)) { + *self = PyMethod_GET_SELF(callback); + if (%CHECKTYPE[QObject*](*self)) + *receiver = %CONVERTTOCPP[QObject*](*self); + forceGlobalReceiver = isDecorator(callback, *self); + } else if (PyCFunction_Check(callback)) { + *self = PyCFunction_GET_SELF(callback); + if (*self && %CHECKTYPE[QObject*](*self)) + *receiver = %CONVERTTOCPP[QObject*](*self); + } else if (PyCallable_Check(callback)) { + // Ok, just a callable object + *receiver = 0; + *self = 0; + } + + bool usingGlobalReceiver = !*receiver || forceGlobalReceiver; + + // Check if this callback is a overwrite of a non-virtual Qt slot. + if (!usingGlobalReceiver && receiver && self) { + *callbackSig = PySide::Signal::getCallbackSignature(signal, *receiver, callback, usingGlobalReceiver).toLatin1(); + const QMetaObject* metaObject = (*receiver)->metaObject(); + int slotIndex = metaObject->indexOfSlot(callbackSig->constData()); + if (slotIndex != -1 && slotIndex < metaObject->methodOffset() && PyMethod_Check(callback)) + usingGlobalReceiver = true; + } + + if (usingGlobalReceiver) { + PySide::SignalManager& signalManager = PySide::SignalManager::instance(); + *receiver = signalManager.globalReceiver(source, callback); + *callbackSig = PySide::Signal::getCallbackSignature(signal, *receiver, callback, usingGlobalReceiver).toLatin1(); + } + + return usingGlobalReceiver; +} + +static bool qobjectConnect(QObject* source, const char* signal, QObject* receiver, const char* slot, Qt::ConnectionType type) +{ + if (!signal || !slot) + return false; + + if (!PySide::Signal::checkQtSignal(signal)) + return false; + signal++; + + if (!PySide::SignalManager::registerMetaMethod(source, signal, QMetaMethod::Signal)) + return false; + + bool isSignal = PySide::Signal::isQtSignal(slot); + slot++; + PySide::SignalManager::registerMetaMethod(receiver, slot, isSignal ? QMetaMethod::Signal : QMetaMethod::Slot); + bool connection; + Py_BEGIN_ALLOW_THREADS + connection = QObject::connect(source, signal - 1, receiver, slot - 1, type); + Py_END_ALLOW_THREADS + return connection; +} + +static bool qobjectConnect(QObject* source, QMetaMethod signal, QObject* receiver, QMetaMethod slot, Qt::ConnectionType type) +{ + return qobjectConnect(source, signal.methodSignature(), receiver, slot.methodSignature(), type); +} + +static bool qobjectConnectCallback(QObject* source, const char* signal, PyObject* callback, Qt::ConnectionType type) +{ + if (!signal || !PySide::Signal::checkQtSignal(signal)) + return false; + signal++; + + int signalIndex = PySide::SignalManager::registerMetaMethodGetIndex(source, signal, QMetaMethod::Signal); + if (signalIndex == -1) + return false; + + PySide::SignalManager& signalManager = PySide::SignalManager::instance(); + + // Extract receiver from callback + QObject* receiver = 0; + PyObject* self = 0; + QByteArray callbackSig; + bool usingGlobalReceiver = getReceiver(source, signal, callback, &receiver, &self, &callbackSig); + if (receiver == 0 && self == 0) + return false; + + const QMetaObject* metaObject = receiver->metaObject(); + const char* slot = callbackSig.constData(); + int slotIndex = metaObject->indexOfSlot(slot); + QMetaMethod signalMethod = metaObject->method(signalIndex); + + if (slotIndex == -1) { + if (!usingGlobalReceiver && self && !Shiboken::Object::hasCppWrapper((SbkObject*)self)) { + qWarning() << "You can't add dynamic slots on an object originated from C++."; + if (usingGlobalReceiver) + signalManager.releaseGlobalReceiver(source, receiver); + + return false; + } + + if (usingGlobalReceiver) + slotIndex = signalManager.globalReceiverSlotIndex(receiver, slot); + else + slotIndex = PySide::SignalManager::registerMetaMethodGetIndex(receiver, slot, QMetaMethod::Slot); + + if (slotIndex == -1) { + if (usingGlobalReceiver) + signalManager.releaseGlobalReceiver(source, receiver); + + return false; + } + } + bool connection; + Py_BEGIN_ALLOW_THREADS + connection = QMetaObject::connect(source, signalIndex, receiver, slotIndex, type); + Py_END_ALLOW_THREADS + if (connection) { + if (usingGlobalReceiver) + signalManager.notifyGlobalReceiver(receiver); + #ifndef AVOID_PROTECTED_HACK + source->connectNotify(signalMethod); //Qt5: QMetaMethod instead of char* + #else + // Need to cast to QObjectWrapper* and call the public version of + // connectNotify when avoiding the protected hack. + reinterpret_cast<QObjectWrapper*>(source)->connectNotify(signalMethod); //Qt5: QMetaMethod instead of char* + #endif + + return connection; + } + + if (usingGlobalReceiver) + signalManager.releaseGlobalReceiver(source, receiver); + + return false; +} + + +static bool qobjectDisconnectCallback(QObject* source, const char* signal, PyObject* callback) +{ + if (!PySide::Signal::checkQtSignal(signal)) + return false; + + PySide::SignalManager& signalManager = PySide::SignalManager::instance(); + + // Extract receiver from callback + QObject* receiver = 0; + PyObject* self = 0; + QByteArray callbackSig; + QMetaMethod slotMethod; + bool usingGlobalReceiver = getReceiver(NULL, signal, callback, &receiver, &self, &callbackSig); + if (receiver == 0 && self == 0) + return false; + + const QMetaObject* metaObject = receiver->metaObject(); + int signalIndex = source->metaObject()->indexOfSignal(++signal); + int slotIndex = -1; + + slotIndex = metaObject->indexOfSlot(callbackSig); + slotMethod = metaObject->method(slotIndex); + + bool disconnected; + Py_BEGIN_ALLOW_THREADS + disconnected = QMetaObject::disconnectOne(source, signalIndex, receiver, slotIndex); + Py_END_ALLOW_THREADS + + if (disconnected) { + if (usingGlobalReceiver) + signalManager.releaseGlobalReceiver(source, receiver); + + #ifndef AVOID_PROTECTED_HACK + source->disconnectNotify(slotMethod); //Qt5: QMetaMethod instead of char* + #else + // Need to cast to QObjectWrapper* and call the public version of + // connectNotify when avoiding the protected hack. + reinterpret_cast<QObjectWrapper*>(source)->disconnectNotify(slotMethod); //Qt5: QMetaMethod instead of char* + #endif + return true; + } + return false; +} |