Fix dimension highlighting problems

Derived all lines from PrimPath

src/Mod/TechDraw/App/DrawViewDimension.cpp

@@ -95,6 +95,7 @@ DrawViewDimension::DrawViewDimension(void)
     ADD_PROPERTY_TYPE(Fontsize,(4)    ,"Format",(App::PropertyType)(App::Prop_None),"Dimension text size in mm");
     ADD_PROPERTY_TYPE(FormatSpec,("%value%") ,"Format",(App::PropertyType)(App::Prop_None),"Dimension Format");
     ADD_PROPERTY_TYPE(LineWidth,(0.5)    ,"Format",(App::PropertyType)(App::Prop_None),"Dimension line weight");
+    //ADD_PROPERTY_TYPE(CentreLines,(0) ,"Format",(App::PropertyType)(App::Prop_None),"Arc Dimension Center Mark");
 
     Type.setEnums(TypeEnums);                                          //dimension type: length, radius etc
     ADD_PROPERTY(Type,((long)0));
@@ -130,6 +131,7 @@ void DrawViewDimension::onChanged(const App::Property* prop)
             prop == &Font        ||
             prop == &Fontsize    ||
             prop == &FormatSpec  ||
+            //prop == &CentreLines ||
             prop == &LineWidth) {
             try {
                 App::DocumentObjectExecReturn *ret = recompute();

src/Mod/TechDraw/App/DrawViewDimension.h

@@ -56,6 +56,7 @@ public:
     App::PropertyFloat   Fontsize;
     App::PropertyString  FormatSpec;
     App::PropertyFloat   LineWidth;
+    //App::PropertyBool    CentreLines;
 
     //TODO: do we need a property for the actual dimension value? how else to access from Py?
     //wf: expose getValue & getFormatedValue