nodeview: better implementation of larger connector hitboxes

app/widget/nodeview/nodeviewitemconnector.cpp

@@ -81,4 +81,19 @@ void NodeViewItemConnector::SetFlowDirection(NodeViewCommon::FlowDirection dir)
   setPolygon(p);
 }
 
+QPainterPath NodeViewItemConnector::shape() const
+{
+  // Yes, we skip QGraphicsPolygonItem because it adds the polygon. QGraphicsItem adds the
+  // boundingRect which we modify below
+  return QGraphicsItem::shape(); // clazy:exclude=skipped-base-method
+}
+
+QRectF NodeViewItemConnector::boundingRect() const
+{
+  QRectF b = this->polygon().boundingRect();
+  const int radius = QFontMetrics(QFont()).height()/2;
+  b.adjust(-radius, -radius, radius, radius);
+  return b;
+}
+
 }