Fix update of children on parent LockPosition change

src/Mod/TechDraw/App/DrawProjGroup.cpp

@@ -109,6 +109,10 @@ void DrawProjGroup::onChanged(const App::Property* prop)
         if (prop == &Source) {
             updateChildrenSource();
         }
+
+        if (prop == &LockPosition) {
+            updateChildrenLock();
+        }
         
         if (prop == &ScaleType) {
             double newScale = getScale();
@@ -129,7 +133,7 @@ void DrawProjGroup::onChanged(const App::Property* prop)
             if (!DrawUtil::fpCompare(Rotation.getValue(),0.0)) {
                 Rotation.setValue(0.0);
                 purgeTouched();
-                Base::Console().Warning("DPG: Projection Groups do not rotate. Change ignored.\n");
+                Base::Console().Log("DPG: Projection Groups do not rotate. Change ignored.\n");
             }
         }
     }
@@ -382,9 +386,10 @@ App::DocumentObject * DrawProjGroup::addProjection(const char *viewProjType)
             view->LockPosition.purgeTouched();
             requestPaint();
         }
-
-        addView(view);         //from DrawViewCollection
-        requestPaint();
+        addView(view);                            //from DrawViewCollection
+        if (view != getAnchor()) {                //anchor is done elsewhere
+            view->recomputeFeature();
+        }
     }
 
     return view;
@@ -787,6 +792,20 @@ void DrawProjGroup::updateChildrenSource(void)
     }
 }
 
+/*! 
+ * tell children DPGIs that parent DPG has changed LockPosition
+ * (really for benefit of QGIV on Gui side)
+ */
+void DrawProjGroup::updateChildrenLock(void)
+{
+    for( const auto it : Views.getValues() ) {
+        auto view( dynamic_cast<DrawProjGroupItem *>(it) );
+        if( view ) {
+            view->requestPaint();
+        }
+    }
+}
+
 /*!
  * check if ProjectionGroup fits on Page
  */

src/Mod/TechDraw/App/DrawProjGroup.h

@@ -160,6 +160,7 @@ protected:
     TechDraw::DrawPage * getPage(void) const;
     void updateChildren(void);
     void updateChildrenSource(void);
+    void updateChildrenLock(void);
     int getViewIndex(const char *viewTypeCStr) const;
 
 };

src/Mod/TechDraw/Gui/QGIView.cpp

@@ -144,7 +144,7 @@ QVariant QGIView::itemChange(GraphicsItemChange change, const QVariant &value)
                         newPos.setY(item->pos().y());
                     } else if(alignMode == QString::fromLatin1("45slash")) {
                          //this logic is wrong since the constained movement direction is not necessarily 45*
-                         Base::Console().Message("QGIV::itemChange - oblique BL-TR\n");
+//                         Base::Console().Message("QGIV::itemChange - oblique BL-TR\n");
 //                        double dist = ( (newPos.x() - item->pos().x()) +
 //                                        (item->pos().y() - newPos.y()) ) / 2.0;
 
@@ -152,7 +152,7 @@ QVariant QGIView::itemChange(GraphicsItemChange change, const QVariant &value)
 //                        newPos.setY( item->pos().y() - dist );
                     } else if(alignMode == QString::fromLatin1("45backslash")) {
                          //this logic is wrong since the constained movement direction is not necessarily 45*
-                         Base::Console().Message("QGIV::itemChange - oblique TL-BR\n");
+//                         Base::Console().Message("QGIV::itemChange - oblique TL-BR\n");
 //                        double dist = ( (newPos.x() - item->pos().x()) +
 //                                        (newPos.y() - item->pos().y()) ) / 2.0;
 
@@ -274,6 +274,7 @@ QGIViewClip* QGIView::getClipGroup(void)
 
 void QGIView::updateView(bool update)
 {
+//    Base::Console().Message("QGIV::updateView() - %s\n",getViewObject()->getNameInDocument());
     if (getViewObject()->isLocked()) {
         setFlag(QGraphicsItem::ItemIsMovable, false);
     } else {
@@ -287,7 +288,9 @@ void QGIView::updateView(bool update)
         setPosition(featX,featY);
     }
 
-    if (getViewObject()->Rotation.isTouched() ) {
+    double appRotation = getViewObject()->Rotation.getValue();
+    double guiRotation = rotation();
+    if (!TechDraw::DrawUtil::fpCompare(appRotation,guiRotation)) {
         rotateView();
     }