Eliminate superfluous DPG executes

src/Mod/TechDraw/App/DrawView.h

@@ -77,7 +77,7 @@ public:
 
     DrawPage* findParentPage() const;
     bool allowAutoPos() {return autoPos;};                //sb in DPGI??
-    void setAutoPos(bool state) {autoPos = state;};
+    void setAutoPos(bool state) {autoPos = state;};       //autopos is obsolete
     bool isMouseMove() {return mouseMove;};
     void setMouseMove(bool state) {mouseMove = state;};
     virtual QRectF getRect() const;                       //must be overridden by derived class
@@ -86,6 +86,7 @@ public:
     virtual void setPosition(double x, double y);
     bool keepUpdated(void);
     boost::signal<void (const DrawView*)> signalGuiPaint;
+    virtual double getScale(void) const;
 
 protected:
     void onChanged(const App::Property* prop);