code: def make_display_lines(self):
          
          self.screen_height, self.screen_width = self.linesnum()  # 屏幕显示行数
  
          display_lines = ['']
          display_lines.append(self._title + '\r')
          display_lines.append('')
  
          scroll_line_num = self.screen_height - 6
          for linenum in range(scroll_line_num):
              if scroll_line_num//2 - linenum > self.markline - self.topline or \
                      linenum - scroll_line_num//2 >= len(self._lines) - self.markline:
                  display_lines.append('\r')
              else:
                  line = self._lines[self.markline - (scroll_line_num//2 - linenum)]
                  line = line.strip('\n')
                  l = self.center_num(line)
                  flag_num = (self.screen_width - l) // 2
                  if linenum == scroll_line_num//2:
                      i = color_func(self.c['LRC']['highlight'])(line)
                      display_lines.append(' ' * flag_num + i + '\r')
                  else:
                      line = color_func(self.c['LRC']['line'])(line)
                      display_lines.append(' ' * flag_num + line + '\r')
  
          display_lines.append('')  # 空行
          display_lines.append(self.center_suffix_selected() + '\r')  # 歌词页面标题
  
          self.display_lines = display_lines
docs: 通过歌词生成屏幕需要显示的内容