def __init__(self, cell_size, nrows, ncols, scrolling=False, **kwds):
GridView.__init__(self, cell_size, nrows, ncols, **kwds)
self.scrolling = scrolling
if scrolling:
d = self.scroll_button_size
#l = self.width
#b = self.height
self.width += d
#self.scroll_up_rect = Rect(l, 0, d, d).inflate(-4, -4)
#self.scroll_down_rect = Rect(l, b - d, d, d).inflate(-4, -4)
self.scroll = 0
