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136 lines
4.6 KiB
C++
136 lines
4.6 KiB
C++
#ifndef _PYTHONQTINSTANCEWRAPPER_H
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#define _PYTHONQTINSTANCEWRAPPER_H
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/*
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*
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* Copyright (C) 2010 MeVis Medical Solutions AG 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 Medical Solutions AG, 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 PythonQtInstanceWrapper.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 "PythonQtPythonInclude.h"
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#include "PythonQtSystem.h"
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#include "PythonQtClassWrapper.h"
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#include <QPointer>
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#include "structmember.h"
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#include "methodobject.h"
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#include "compile.h"
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class PythonQtClassInfo;
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class QObject;
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extern PYTHONQT_EXPORT PyTypeObject PythonQtInstanceWrapper_Type;
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//---------------------------------------------------------------
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//! a Python wrapper object for Qt objects and C++ objects (that are themselves wrapped by wrapper QObjects)
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struct PythonQtInstanceWrapper {
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PyObject_HEAD
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//! the class information, this is set even if the _obj or _wrappedPtr is NULL to support typed NULL pointers
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inline PythonQtClassInfo* classInfo()
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{ return ((PythonQtClassWrapper*)Py_TYPE(this))->_classInfo; }
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inline PythonQtDynamicClassInfo* dynamicClassInfo()
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{ return ((PythonQtClassWrapper*)Py_TYPE(this))->_dynamicClassInfo; }
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//! set the QObject pointer
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void setQObject(QObject* object) {
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_obj = object;
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_objPointerCopy = object;
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}
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//! Passes the ownership of the wrapped object to C++
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void passOwnershipToCPP() {
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// we pass the ownership to C++
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_ownedByPythonQt = false;
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// handle shell instance
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if (_isShellInstance) {
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if (!_shellInstanceRefCountsWrapper) {
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// ref count the wrapper, so that the Python part of the shell instance can not go
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// away until the C++ object gets deleted...
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Py_INCREF((PyObject*)this);
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_shellInstanceRefCountsWrapper = true;
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}
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}
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}
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//! Passes the ownership to Python
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void passOwnershipToPython() {
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_ownedByPythonQt = true;
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// if the shell instance was owned by C++ and the ownership goes to Python,
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// we need to remove the extra ref count that kept the Python part alive from the C++ side.
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if (_shellInstanceRefCountsWrapper) {
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Py_DECREF((PyObject*)this);
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_shellInstanceRefCountsWrapper = false;
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}
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}
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//! pointer to the wrapped Qt object or if _wrappedPtr is set, the Qt object that wraps the C++ Ptr
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QPointer<QObject> _obj;
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//! a copy of the _obj pointer, which is required because the wrapper needs to
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//! deregister itself via the _obj pointer, even when the QPointer<QObject> object was destroyed
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void* _objPointerCopy;
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//! optional C++ object Ptr that is wrapped by the above _obj
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void* _wrappedPtr;
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// TODO xxx: put booleans into int that holds flags
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//! flag that stores if the object is owned by pythonQt
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bool _ownedByPythonQt;
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//! stores that the owned object should be destroyed using QMetaType::destroy()
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bool _useQMetaTypeDestroy;
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//! stores if the object is a shell instance
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bool _isShellInstance;
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//! stores if the shell instance (C++) owns the wrapper with its ref count
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bool _shellInstanceRefCountsWrapper;
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};
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int PythonQtInstanceWrapper_init(PythonQtInstanceWrapper * self, PyObject * args, PyObject * kwds);
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PyObject *PythonQtInstanceWrapper_delete(PythonQtInstanceWrapper * self);
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#endif
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