Position<int> const p (ev.GetX() + vsx * _x_scroll_rate, ev.GetY() + vsy * _y_scroll_rate);
while (i != _views.rend() && !(*i)->bbox().contains (p)) {
Position<int> const p (ev.GetX() + vsx * _x_scroll_rate, ev.GetY() + vsy * _y_scroll_rate);
while (i != _views.rend() && !(*i)->bbox().contains (p)) {