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#ifndef _PYTHONQTSIGNALRECEIVER_H
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#define _PYTHONQTSIGNALRECEIVER_H
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/*
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*
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* Copyright (C) 2006 MeVis Research GmbH All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Contact information: MeVis Research GmbH, Universitaetsallee 29,
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* 28359 Bremen, Germany or:
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*
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* http://www.mevis.de
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*
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*/
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//----------------------------------------------------------------------------------
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/*!
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// \file PythonQtSignalReceiver.h
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// \author Florian Link
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// \author Last changed by $Author: florian $
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// \date 2006-05
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*/
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//----------------------------------------------------------------------------------
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#include <Python.h>
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#include "PythonQtSystem.h"
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#include "PythonQtObjectPtr.h"
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class PythonQtMethodInfo;
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class PythonQtClassInfo;
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//! stores information about a signal target
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/*! copy construction and assignment works fine with the C++ standard behaviour and are thus not implemented
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*/
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class PYTHONQT_EXPORT PythonQtSignalTarget {
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public:
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PythonQtSignalTarget() {
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_signalId = -1;
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_methodInfo = NULL;
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_slotId = -1;
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}
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PythonQtSignalTarget(int signalId,const PythonQtMethodInfo* methodInfo, int slotId, PyObject* callable)
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{
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_signalId = signalId;
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_slotId = slotId;
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_methodInfo = methodInfo;
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_callable = callable;
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};
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~PythonQtSignalTarget() {
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};
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//! get the id of the original signal
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int signalId() const { return _signalId; }
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//! get the id that was assigned to this simulated slot
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int slotId() const { return _slotId; }
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//! get the signals parameter info
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const PythonQtMethodInfo* methodInfo() const { return _methodInfo; }
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//! call the python callable with the given arguments (as defined in methodInfo)
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void call(void **arguments) const;
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//! check if it is the same signal target
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bool isSame(int signalId, PyObject* callable) const { return callable==_callable && signalId==_signalId; }
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//! call the given callable with arguments described by PythonQtMethodInfo, returns a new reference as result value (or NULL)
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static PyObject* call(PyObject* callable, const PythonQtMethodInfo* methodInfo, void **arguments, bool skipFirstArgumentOfMethodInfo = false);
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private:
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int _signalId;
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int _slotId;
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const PythonQtMethodInfo* _methodInfo;
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PythonQtObjectPtr _callable;
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};
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//! base class for signal receivers
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/*!
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*/
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class PythonQtSignalReceiverBase : public QObject {
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Q_OBJECT
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public:
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PythonQtSignalReceiverBase(QObject* obj):QObject(obj) {};
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};
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//! receives all signals for one QObject
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/*! we derive from our base but do not declare the QObject macro because we want to reimplement qt_metacall only.
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*/
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class PythonQtSignalReceiver : public PythonQtSignalReceiverBase {
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public:
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PythonQtSignalReceiver(QObject* obj);
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~PythonQtSignalReceiver();
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//! add a signal handler
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bool addSignalHandler(const char* signal, PyObject* callable);
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//! remove a signal handler
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bool removeSignalHandler(const char* signal, PyObject* callable);
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//! remove all signal handlers
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void removeSignalHandlers();
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//! we implement this method to simulate a number of slots that match the ids in _targets
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virtual int qt_metacall(QMetaObject::Call c, int id, void **arguments);
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private:
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//! get the index of the signal
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int getSignalIndex(const char* signal);
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QObject* _obj;
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PythonQtClassInfo* _objClassInfo;
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int _slotCount;
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// linear list may get slow on multiple targets, but I think typically we have many objects and just a few signals
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QList<PythonQtSignalTarget> _targets;
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};
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#endif
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