showOnScreen method

void showOnScreen ([RenderObject child ])

Attempt to make this or a descendant RenderObject visible on screen.

If child is provided, that RenderObject is made visible. If child is omitted, this RenderObject is made visible.

Implementation

void showOnScreen([RenderObject child]) {
  if (parent is RenderObject) {
    final RenderObject renderParent = parent;
    renderParent.showOnScreen(child ?? this);
  }
}