scrollHitNotification method

Implementation

bool scrollHitNotification(ScrollNotification notification) {
  scrollHitStart = false;
  scrollHitEnd = false;
  if (notification.metrics.pixels <= 0.0) {
    onScrollHitStart();
  } else if (notification.metrics.pixels >=
      notification.metrics.maxScrollExtent) {
    onScrollHitEnd();
  }
  return false;
}