Function to print the kana question to WaveShare screen.

test_romaji_hiragana.py

def test_romaji_hiragana(romaji, options):
    """Prints a question to the screen, asking which of the
    printed hiragana correspond to the given romaji."""
    from epd import epd2in7b as epdlib
    from PIL import Image, ImageDraw, ImageFont
    # TODO: Make a library for this.
    canvas_width, canvas_height = 264, 176
    canvas_black = Image.new(
            "L", 
            (canvas_width, canvas_height), 
            "#ffffff")
    canvas_red = Image.new(
            "L", 
            (canvas_width, canvas_height), 
            "#ffffff")
    font_path = "fonts/rounded-mgenplus-1p-regular.ttf"
    font_en = ImageFont.truetype(font_path, 20)
    font_nh = ImageFont.truetype(font_path, 18)
    draw = ImageDraw.Draw(canvas_black)
    msg_1 = u"What is the hiragana for\n'{}'?".format(romaji)
    logging.debug(msg_1)
    
    draw.text(
            (2, 5),
            msg_1,
            fill = "#000000",
            font=font_en
            )
    
    msg_2 = u"[1] {0}     [2] {1}\n\n[3] {2}    [4] {3}".format(*options)
    logging.debug(msg_2)
    draw.text(
            (40,70),
            msg_2,
            fill = "#000000",
            font=font_nh
            )
    epd = epdlib.EPD()
    epd.init()
    canvas_black = canvas_black.transpose(Image.ROTATE_90)
    canvas_red = canvas_red.transpose(Image.ROTATE_90)
    frame_black = epd.get_frame_buffer(canvas_black)
    frame_red = epd.get_frame_buffer(canvas_red)
    epd.display_frame(frame_black, frame_red)
    answer = get_input()
    return options[answer-1] if answer is not None else None