code: def _place_ticks_horizontal(self):
          
          # first tick
          tick = self.ticks[0]
          label = self.ticklabels[0]
          x = self.convert_to_pixels(tick)
          half_width = label.winfo_reqwidth() / 2
          if x - half_width < 0:
              x = half_width
          label.place_configure(x=x)
          # ticks in the middle
          for tick, label in zip(self.ticks[1:-1], self.ticklabels[1:-1]):
              x = self.convert_to_pixels(tick)
              label.place_configure(x=x)
          # last tick
          tick = self.ticks[-1]
          label = self.ticklabels[-1]
          x = self.convert_to_pixels(tick)
          half_width = label.winfo_reqwidth() / 2
          if x + half_width > self.scale.winfo_reqwidth():
              x = self.scale.winfo_width() - half_width
          label.place_configure(x=x)
docs: Display the ticks for a horizontal scale.