[TD]fix fail to clear frame on selection change

src/Mod/TechDraw/Gui/QGIView.cpp

@@ -168,7 +168,6 @@ void QGIView::alignTo(QGraphicsItem*item, const QString &alignment)
 
 QVariant QGIView::itemChange(GraphicsItemChange change, const QVariant &value)
 {
-    //    Base::Console().message("QGIV::itemChange(%d)\n", change);
     if(change == ItemPositionChange && scene()) {
         QPointF newPos = value.toPointF();            //position within parent!
         TechDraw::DrawView* viewObj = getViewObject();
@@ -196,13 +195,10 @@ QVariant QGIView::itemChange(GraphicsItemChange change, const QVariant &value)
         return newPos;
     }
 
+    // wf: why scene()? because if our selected state has changed because we have been removed from
+    //     the scene, we don't do anything except wait to be deleted.
     if (change == ItemSelectedHasChanged && scene()) {
-        std::vector<Gui::SelectionObject> currentSelection = Gui::Selection().getSelectionEx();
-        bool isViewObjectSelected = Gui::Selection().isSelected(getViewObject());
-        bool hasSelectedSubElements =
-            !DrawGuiUtil::getSubsForSelectedObject(currentSelection, getViewObject()).empty();
-
-        if (isViewObjectSelected || hasSelectedSubElements) {
+        if (isSelected() || hasSelectedChildren(this)) {
             m_colCurrent = getSelectColor();
             m_border->show();
             m_label->show();
@@ -220,7 +216,6 @@ QVariant QGIView::itemChange(GraphicsItemChange change, const QVariant &value)
             }
         }
         drawBorder();
-        update();
     }
 
     return QGraphicsItemGroup::itemChange(change, value);
@@ -537,7 +532,6 @@ void QGIView::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
     m_lock->setVisible(getViewObject()->isLocked() && getViewObject()->showLock());
 
     drawBorder();
-    update();
 }
 
 
@@ -560,13 +554,11 @@ void QGIView::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
     }
 
     drawBorder();
-    update();
 }
 
 //sets position in /Gui(graphics), not /App
 void QGIView::setPosition(qreal xPos, qreal yPos)
 {
-    //    Base::Console().message("QGIV::setPosition(%.3f, %.3f) (gui)\n", x, y);
     double newX = xPos;
     double newY = -yPos;
     double oldX = pos().x();
@@ -595,8 +587,6 @@ QGIViewClip* QGIView::getClipGroup()
 
 void QGIView::updateView(bool forceUpdate)
 {
-    //    Base::Console().message("QGIV::updateView() - %s\n", getViewObject()->getNameInDocument());
-
             //allow/prevent dragging
     if (getViewObject()->isLocked()) {
         setFlag(QGraphicsItem::ItemIsMovable, false);
@@ -678,7 +668,6 @@ void QGIView::toggleCache(bool state)
 
 void QGIView::draw()
 {
-    //    Base::Console().message("QGIV::draw()\n");
     double xFeat, yFeat;
     if (getViewObject()) {
         xFeat = Rez::guiX(getViewObject()->X.getValue());
@@ -742,10 +731,10 @@ void QGIView::layoutDecorations(const QRectF& contentArea,
 
 void QGIView::drawBorder()
 {
-    // Base::Console().message("QGIV::drawBorder() - %s\n", getViewName());
     auto feat = getViewObject();
-    if (!feat)
+    if (!feat) {
         return;
+    }
 
     prepareCaption();
 
@@ -1060,6 +1049,20 @@ void QGIView::makeMark(double xPos, double yPos, QColor color)
     vItem->setZValue(ZVALUE::VERTEX);
 }
 
+//! true if parent has any children which are selected
+bool QGIView::hasSelectedChildren(QGIView* parent)
+{
+    QList<QGraphicsItem*> children = parent->childItems();
+
+    auto itMatch = std::find_if(children.begin(), children.end(),
+             [&](QGraphicsItem* child) {
+                return child->isSelected();
+             });
+
+    return itMatch != children.end();
+}
+
+
 void QGIView::makeMark(Base::Vector3d pos, QColor color)
 {
     makeMark(pos.x, pos.y, color);
@@ -1070,6 +1073,7 @@ void QGIView::makeMark(QPointF pos, QColor color)
     makeMark(pos.x(), pos.y(), color);
 }
 
+
 //! Retrieves objects of type T with given indexes
 template <typename T>
 std::vector<T> QGIView::getObjects(std::vector<int> indexes)

src/Mod/TechDraw/Gui/QGIView.h

@@ -174,6 +174,8 @@ public:
 
     bool pseudoEventFilter(QGraphicsItem *watched, QEvent *event) { return sceneEventFilter(watched, event); }
 
+    static bool hasSelectedChildren(QGIView* parent);
+
 protected:
     QGIView* getQGIVByName(std::string name) const;
 

src/Mod/TechDraw/Gui/QGIViewPart.cpp

@@ -116,7 +116,7 @@ QVariant QGIViewPart::itemChange(GraphicsItemChange change, const QVariant& valu
             }
             return QGIView::itemChange(change, value);
         }
-        // we are selected
+        // we are selected, don't change anything?
     }
     else if (change == ItemSceneChange && scene()) {
         // This means we are finished?
@@ -140,7 +140,6 @@ QVariant QGIViewPart::itemChange(GraphicsItemChange change, const QVariant& valu
                             child->hide();
                         }
                     }
-                    update();
                 }
             });
         }