Gui: [skip ci] add method to access the Inventor viewer as QGraphicsView

src/Gui/View3DPy.cpp

@@ -51,6 +51,7 @@
 #include "View3DInventorViewer.h"
 #include "View3DViewerPy.h"
 #include "ActiveObjectList.h"
+#include "WidgetFactory.h"
 
 
 #include <Base/Console.h>
@@ -203,6 +204,8 @@ void View3DInventorPy::init_type()
         "pla: clipping plane placement");
     add_varargs_method("hasClippingPlane",&View3DInventorPy::hasClippingPlane,
         "hasClippingPlane(): check whether this clipping plane is active");
+    add_varargs_method("graphicsView",&View3DInventorPy::graphicsView,
+        "graphicsView(): Access this view as QGraphicsView");
 }
 
 View3DInventorPy::View3DInventorPy(View3DInventor *vi)
@@ -2597,3 +2600,13 @@ Py::Object View3DInventorPy::hasClippingPlane(const Py::Tuple& args)
         throw Py::Exception();
     return Py::Boolean(_view->getViewer()->hasClippingPlane());
 }
+
+Py::Object View3DInventorPy::graphicsView(const Py::Tuple& args)
+{
+    if (!PyArg_ParseTuple(args.ptr(), ""))
+        throw Py::Exception();
+
+    PythonWrapper wrap;
+    wrap.loadWidgetsModule();
+    return wrap.fromQWidget(_view->getViewer(), "QGraphicsView");
+}

src/Gui/View3DPy.h

@@ -132,6 +132,7 @@ public:
     Py::Object setName(const Py::Tuple&);
     Py::Object toggleClippingPlane(const Py::Tuple& args, const Py::Dict &);
     Py::Object hasClippingPlane(const Py::Tuple& args);
+    Py::Object graphicsView(const Py::Tuple& args);
 
     View3DInventor* getView3DIventorPtr() {return _view;}