Set placement property to read-only for skecth/ dress up features

src/Mod/PartDesign/App/FeatureDressUp.cpp

@@ -48,4 +48,14 @@ void DressUp::positionByBase(void)
         this->Placement.setValue(base->Placement.getValue());
 }
 
+void DressUp::onChanged(const App::Property* prop)
+{
+    if (prop == &Base) {
+        // if attached to a sketch then mark it as read-only
+        this->Placement.StatusBits.set(2, Base.getValue() != 0);
+    }
+
+    Feature::onChanged(prop);
+}
+
 }

src/Mod/PartDesign/App/FeatureDressUp.h

@@ -41,7 +41,10 @@ public:
 
     /// updates the Placement property from the Placement of Base
     void positionByBase(void);
- };
+
+protected:
+    void onChanged(const App::Property* prop);
+};
 
 } //namespace PartDesign
 

src/Mod/PartDesign/App/FeatureSketchBased.cpp

@@ -89,6 +89,16 @@ void SketchBased::positionBySketch(void)
     }
 }
 
+void SketchBased::onChanged(const App::Property* prop)
+{
+    if (prop == &Sketch) {
+        // if attached to a sketch then mark it as read-only
+        this->Placement.StatusBits.set(2, Sketch.getValue() != 0);
+    }
+
+    Feature::onChanged(prop);
+}
+
 bool SketchBased::isInside(const TopoDS_Wire& wire1, const TopoDS_Wire& wire2) const
 {
     Bnd_Box box1;

src/Mod/PartDesign/App/FeatureSketchBased.h

@@ -51,6 +51,7 @@ public:
     int getSketchAxisCount(void) const;
 
 protected:
+    void onChanged(const App::Property* prop);
     TopoDS_Face validateFace(const TopoDS_Face&) const;
     TopoDS_Shape makeFace(const std::vector<TopoDS_Wire>&) const;
     TopoDS_Shape makeFace(std::list<TopoDS_Wire>&) const; // for internal use only