Allow View Position to be Locked

- prevents accidently moving View A from desired position
  while grabbing/dragging View B.

src/Mod/TechDraw/App/DrawView.cpp

@@ -76,6 +76,7 @@ DrawView::DrawView(void)
 
     ADD_PROPERTY_TYPE(X ,(0),group,App::Prop_None,"X position of the view on the page in modelling units (mm)");
     ADD_PROPERTY_TYPE(Y ,(0),group,App::Prop_None,"Y position of the view on the page in modelling units (mm)");
+    ADD_PROPERTY_TYPE(LockPosition ,(false),group,App::Prop_None,"Prevent View from moving in Gui");
     ADD_PROPERTY_TYPE(Rotation ,(0),group,App::Prop_None,"Rotation of the view on the page in degrees counterclockwise");
 
     ScaleType.setEnums(ScaleTypeEnums);

src/Mod/TechDraw/App/DrawView.h

@@ -50,6 +50,7 @@ public:
 
     App::PropertyFloat X;
     App::PropertyFloat Y;
+    App::PropertyBool  LockPosition;
     App::PropertyFloatConstraint Scale;
 
     App::PropertyEnumeration ScaleType;

src/Mod/TechDraw/Gui/QGIView.cpp

@@ -257,6 +257,11 @@ double QGIView::getYInClip(double y)
 
 void QGIView::updateView(bool update)
 {
+    if (getViewObject()->LockPosition.getValue()) {
+        setFlag(QGraphicsItem::ItemIsMovable, false);
+    } else {
+        setFlag(QGraphicsItem::ItemIsMovable, true);
+    }
     if (update ||
         getViewObject()->X.isTouched() ||
         getViewObject()->Y.isTouched()) {