display_letters.py 文件源码

def literally_show(self, airport_code):
    display = Matrix16x8.Matrix16x8()
    display.begin()
    display.set_brightness(4)
    font = ImageFont.truetype(os.path.join(os.path.dirname(__file__), 'thintel/Thintel.ttf'), 15)
    if len(airport_code) == 4:
      image = Image.new('1', (21, 8))
      draw = ImageDraw.Draw(image)

      blankimage = Image.new('1', (16, 8))
      blankdraw = ImageDraw.Draw(blankimage)
      blankdraw.text((0, 0), '', fill=255)

      for i in xrange(58):
        n = 5 - abs((i % 12) - 5)
        draw.text((0, 0), airport_code,  font=font, fill=255)
        display.set_image(blankimage)
        display.write_display()
        display.set_image(image.crop((n, 0, n + 16, 8)))
        display.write_display()
        sleep( 0.5 if i > 0 else 3)
    elif len(airport_code) == 3 or len(airport_code) == 0:
      image = Image.new('1', (16, 8))
      draw = ImageDraw.Draw(image)
      draw.text((0, 0), airport_code,  font=font, fill=255)
      display.set_image(image)
      display.write_display()