raspi-zero-waveshare/simpilib/eink.py

import os as _os
fontpath = _os.path.realpath(_os.path.join(__file__,"..","..","wavesharelib","pic", 'Font.ttc'))

def eink_qr(args):
    from waveshare_epd import epd2in13_V2
    from PIL import Image,ImageDraw
    import qrcode
    epd = epd2in13_V2.EPD()
    epd.init(epd.FULL_UPDATE)
    image = Image.new('1', (epd.height, epd.width), 0)
    qr = qrcode.QRCode(version=1, box_size=3, border=1)
    qr.add_data(args.text)
    qr.make()
    pic = qr.make_image().get_image()
    image.paste(pic, (int(epd.height-pic.width),0), pic)
    epd.display(epd.getbuffer(image))
    epd.sleep()
    epd.Dev_exit()

def eink_quote_qr(args):
    pass

def eink_quote(args):
    import simpilib
    quote = simpilib.getQuote()
    if not quote:
        return
    args.text = quote["content"] + ' - ' + quote["author"]
    eink_text(args)

def eink_text(args):
    from waveshare_epd import epd2in13_V2
    from PIL import Image,ImageDraw
    import simpilib

    epd = epd2in13_V2.EPD()
    print("init and Clear")
    epd.init(epd.FULL_UPDATE)
    # epd.Clear(0xFF)
    image = Image.new('1', (epd.height, epd.width), 0)
    draw = ImageDraw.Draw(image)

    text, longline = simpilib.wrapText(args.text, line_width_factor=5)
    font = simpilib.loadFontSize(text, draw, image, fontpath)

    w, h = draw.textsize(text, font=font)

    # epd parameters are rotated 90°
    center = [
        int((epd.height - w)/2),
        int((epd.width-h)/2) - 3,
    ]
    # -3 px to leave some space for low characters

    print("Drawing:", (w, h), (epd.height, epd.width), center)
    draw.text(center, text, align="center", font = font, fill = 255)

    # epd.display(epd.getbuffer(image.rotate(180)))
    epd.display(epd.getbuffer(image))
    epd.sleep()
    epd.Dev_exit()