code: def draw(self, ar, can, x_tick, x_label, y):
          
  
          rect_size = self.get_rect_size()
          line_len = self.get_line_len()
  
          nr_lines = len(self.label.split("\n"))
          text_height = font.text_height(self.label)[0]
          line_height = text_height / float(nr_lines)
          y_center = y + text_height - line_height / 1.5
  
          if self.fill_style != None:
              can.rectangle(self.line_style, self.fill_style,
                            x_tick, y_center - rect_size / 2.0,
                            x_tick + rect_size,
                            y_center + rect_size / 2.0)
          elif self.line_style != None:
              can.line(self.line_style, x_tick, y_center,
                       x_tick + line_len, y_center)
              if self.tick_mark != None:
                  self.tick_mark.draw(can, x_tick + line_len / 2.0, y_center)
          elif self.tick_mark != None:
              self.tick_mark.draw(can, x_tick, y_center)
  
          can.show(x_label, y, self.label)
docs: Draw a legend entry. X_TICK and X_LABEL are the X location \
          (in points) of where the sample and label are drawn.