Fem: Expose Constraint view provider symbol node to Python

src/Mod/Fem/Gui/ViewProviderFemConstraintPyImp.cpp

@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+/***************************************************************************
+ *   Copyright (c) 2024 Mario Passaglia <mpassaglia[at]cbc.uba.ar>         *
+ *                                                                         *
+ *   This file is part of FreeCAD.                                         *
+ *                                                                         *
+ *   FreeCAD is free software: you can redistribute it and/or modify it    *
+ *   under the terms of the GNU Lesser General Public License as           *
+ *   published by the Free Software Foundation, either version 2.1 of the  *
+ *   License, or (at your option) any later version.                       *
+ *                                                                         *
+ *   FreeCAD is distributed in the hope that it will be useful, but        *
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with FreeCAD. If not, see                               *
+ *   <https://www.gnu.org/licenses/>.                                      *
+ *                                                                         *
+ **************************************************************************/
+
+#include "PreCompiled.h"
+#ifndef _PreComp_
+#include <Inventor/nodes/SoSeparator.h>
+#endif
+
+#include <Base/Interpreter.h>
+
+#include "ViewProviderFemConstraintPy.h"
+#include "ViewProviderFemConstraintPy.cpp"
+
+
+using namespace FemGui;
+
+// returns a string which represent the object e.g. when printed in python
+std::string ViewProviderFemConstraintPy::representation() const
+{
+    std::stringstream str;
+    str << "<View provider FemConstraint object at " << getViewProviderFemConstraintPtr() << ">";
+
+    return str.str();
+}
+
+
+Py::Object ViewProviderFemConstraintPy::getSymbolNode() const
+{
+    try {
+        SoSeparator* sep = getViewProviderFemConstraintPtr()->getSymbolSeparator();
+        PyObject* Ptr =
+            Base::Interpreter().createSWIGPointerObj("pivy.coin", "_p_SoSeparator", sep, 1);
+
+        sep->ref();
+
+        return Py::Object(Ptr, true);
+    }
+    catch (const Base::Exception& e) {
+        throw Py::RuntimeError(e.what());
+    }
+}
+
+PyObject* ViewProviderFemConstraintPy::getCustomAttributes(const char* /*attr*/) const
+{
+    return nullptr;
+}
+
+int ViewProviderFemConstraintPy::setCustomAttributes(const char* /*attr*/, PyObject* /*obj*/)
+{
+    return 0;
+}