Пример #1
0
void
ScrollbarActivity::WillRefresh(TimeStamp aTime)
{
  NS_ASSERTION(mIsActive, "should only fade while scrollbars are visible");
  NS_ASSERTION(!IsActivityOngoing(), "why weren't we unregistered from the refresh driver when scrollbar activity started?");
  NS_ASSERTION(mIsFading, "should only animate fading during fade");

  if (!UpdateOpacity(aTime)) {
    return;
  }

  if (!IsStillFading(aTime)) {
    EndFade();
  }
}