def redraw_label(self):
<EOL>sx,sy = self.size<EOL>x,y = self.pos<EOL>self._label.x = x+sx/<NUM_LIT><EOL>self._label.y = y+sy/<NUM_LIT><EOL>self._label._update()<EOL>
Re-draws the label by calculating its position.

Currently, the label will always be centered on the Button.