RenderIgnorePointer({RenderBox child, bool ignoring: true, bool ignoringSemantics })

Creates a render object that is invisible to hit testing.

The ignoring argument must not be null. If ignoringSemantics, this render object will be ignored for semantics if ignoring is true.

Source 

RenderIgnorePointer({
  RenderBox child,
  bool ignoring: true,
  bool ignoringSemantics
}) : _ignoring = ignoring, _ignoringSemantics = ignoringSemantics, super(child) {
  assert(_ignoring != null);
}