Correct delayed update when adding views to ProjectionGroup

src/Mod/TechDraw/App/DrawProjGroup.cpp

@@ -292,6 +292,7 @@ App::DocumentObject * DrawProjGroup::addProjection(const char *viewProjType)
 
         addView(view);         //from DrawViewCollection - add to ProjGroup Views
         moveToCentre();
+        view->recompute();
     }
 
     return view;

src/Mod/TechDraw/App/DrawProjGroup.h

@@ -114,25 +114,11 @@ public:
     /// Allowed projection types - either Document, First Angle or Third Angle
     static const char* ProjectionTypeEnums[];
 
-protected:
-    void onChanged(const App::Property* prop);
-
-    //! Moves anchor view to keep our bounding box centre on the origin
-    void moveToCentre();
-
-    /// Annoying helper - keep in sync with DrawProjGroupItem::TypeEnums
-    /*!
-     * \TODO See note regarding App::PropertyEnumeration on my wiki page http://freecadweb.org/wiki/index.php?title=User:Ian.rees
-     * \return true iff 'in' is a valid name for an orthographic/isometric view
-     */
-    bool checkViewProjType(const char *in);
-
-    /// Sets Direction and XAxisDirection in v
+    /// Sets Direction in v
     /*!
      * Applies viewOrientationMatrix to appropriate unit vectors depending on projType
      */
     void setViewOrientation(DrawProjGroupItem *v, const char *projType) const;
-
     /// Populates an array of DrawProjGroupItem*s arranged for drawing
     /*!
      * Setup array of pointers to the views that we're displaying,
@@ -151,6 +137,20 @@ protected:
      *               FTRight  T  FTL
      * </pre>
      */
+
+protected:
+    void onChanged(const App::Property* prop);
+
+    //! Moves anchor view to keep our bounding box centre on the origin
+    void moveToCentre();
+
+    /// Annoying helper - keep in sync with DrawProjGroupItem::TypeEnums
+    /*!
+     * \TODO See note regarding App::PropertyEnumeration on my wiki page http://freecadweb.org/wiki/index.php?title=User:Ian.rees
+     * \return true iff 'in' is a valid name for an orthographic/isometric view
+     */
+    bool checkViewProjType(const char *in);
+
     void arrangeViewPointers(DrawProjGroupItem *viewPtrs[10]) const;
 
     /// Populates array of 10 BoundBox3d's given DrawProjGroupItem *s

src/Mod/TechDraw/App/DrawProjGroupPy.xml

@@ -33,6 +33,11 @@
         <UserDocu>getItemByLabel(string projectionType) - return specified Projection Item</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="setViewOrientation">
+      <Documentation>
+        <UserDocu>setViewOrientation(DrawProjGroupItem item, string projectionType) - sets item's view Direction according to projectionType</UserDocu>
+      </Documentation>
+    </Methode>
     <CustomAttributes />
   </PythonExport>
 </GenerateModel>

src/Mod/TechDraw/App/DrawProjGroupPyImp.cpp

@@ -24,8 +24,7 @@ PyObject* DrawProjGroupPy::addProjection(PyObject* args)
     const char* projType;
 
     if (!PyArg_ParseTuple(args, "s", &projType)) {
-        Base::Console().Error("Error: DrawProjGroupPy::addProjection - Bad Arg - not string\n");
-        return NULL;
+        throw Py::Exception();
     }
 
     DrawProjGroup* projGroup = getDrawProjGroupPtr();
@@ -40,8 +39,7 @@ PyObject* DrawProjGroupPy::removeProjection(PyObject* args)
     const char* projType;
 
     if (!PyArg_ParseTuple(args, "s", &projType)) {
-        Base::Console().Error("Error: DrawProjGroupPy::removeProjection - Bad Arg - not string\n");
-        return NULL;
+        throw Py::Exception();
     }
 
     DrawProjGroup* projGroup = getDrawProjGroupPtr();
@@ -63,8 +61,7 @@ PyObject* DrawProjGroupPy::getItemByLabel(PyObject* args)
     const char* projType;
 
     if (!PyArg_ParseTuple(args, "s", &projType)) {
-        Base::Console().Error("Error: DrawProjGroupPy::getItemByLabel - Bad Arg - not string\n");
-        return NULL;
+        throw Py::Exception();
     }
 
     DrawProjGroup* projGroup = getDrawProjGroupPtr();
@@ -74,6 +71,27 @@ PyObject* DrawProjGroupPy::getItemByLabel(PyObject* args)
     return new DrawProjGroupItemPy(newProj);
 }
 
+PyObject* DrawProjGroupPy::setViewOrientation(PyObject* args)
+{
+    const char* projType;
+    PyObject* pcObj;
+    if (!PyArg_ParseTuple(args, "Os", &pcObj,&projType))
+        throw Py::Exception();
+
+    App::DocumentObject* obj = static_cast<App::DocumentObjectPy*>(pcObj)->getDocumentObjectPtr();
+    if (obj->getTypeId().isDerivedFrom(TechDraw::DrawProjGroupItem::getClassTypeId())) {
+        TechDraw::DrawProjGroupItem* view = static_cast<TechDraw::DrawProjGroupItem*>(obj);
+        TechDraw::DrawProjGroup* projGroup = getDrawProjGroupPtr();
+        projGroup->setViewOrientation( view, projType );
+
+    } else {
+        Base::Console().Message("'%s' is not a DrawProjGroup Item, it will be ignored.\n", obj->Label.getValue());
+    }
+
+    return Py_None;
+}
+
+
 PyObject *DrawProjGroupPy::getCustomAttributes(const char* /*attr*/) const
 {
     return 0;