89bbb81521
FreeCADs property system utilises some pointer math to calculate the offset between property and base class. Due to virtual inheritance of th ePropertyContainer the memory layout has been changed to rather random, which has lead to crashes dependend on the order of object initialisation. The solution is to not make PropertyContaner virtual but a class below, Base::Persitance. Then the memory layout is random for Persistance, but it is perfectly aligned for the base class chains from PropertyContainer onwards as well as from Extension onwards. Hence the proeprty system was changed to take the offset always from those two.
68 lines
3.1 KiB
C++
68 lines
3.1 KiB
C++
/***************************************************************************
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* Copyright (c) 2015 Alexander Golubev (Fat-Zer) <fatzer2@gmail.com> *
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* Copyright (c) 2016 Stefan Tröger <stefantroeger@gmx.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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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 Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 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 *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef GUI_VIEWPROVIDERORIGINGROUPEXTENSION_H
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#define GUI_VIEWPROVIDERORIGINGROUPEXTENSION_H
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#include <App/Extension.h>
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#include "ViewProviderGeoFeatureGroup.h"
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namespace Gui
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{
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class GuiExport ViewProviderOriginGroupExtension : public ViewProviderGeoFeatureGroupExtension
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{
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EXTENSION_PROPERTY_HEADER(Gui::ViewProviderOriginGroupExtension);
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public:
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/// Constructor
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ViewProviderOriginGroupExtension(void);
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virtual ~ViewProviderOriginGroupExtension();
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virtual std::vector<App::DocumentObject*> extensionClaimChildren(void)const override;
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virtual std::vector<App::DocumentObject*> extensionClaimChildren3D(void)const override;
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virtual void extensionAttach(App::DocumentObject *pcObject) override;
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virtual void extensionUpdateData(const App::Property* prop) override;
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void updateOriginSize();
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protected:
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void slotChangedObjectApp ( const App::DocumentObject& obj );
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void slotChangedObjectGui ( const Gui::ViewProviderDocumentObject& obj );
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private:
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std::vector<App::DocumentObject*> constructChildren (
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const std::vector<App::DocumentObject*> &children ) const;
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boost::signals::connection connectChangedObjectApp;
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boost::signals::connection connectChangedObjectGui;
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};
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typedef ViewProviderExtensionPythonT<Gui::ViewProviderOriginGroupExtension> ViewProviderOriginGroupExtensionPython;
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} //namespace Gui
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#endif // GUI_VIEWPROVIDERORIGINGROUPEXTENSION_H
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