synchronised_time.py

import time


def create_synchronised_time(display, button_a, button_b, button_x, button_y):
    WHITE = display.create_pen(255, 255, 255)
    BLACK = display.create_pen(0, 0, 0)
    
    datetime = [2021, 1, 1, 1, 1, 0]
    selected_idx = 0

    display_width, display_height = display.get_bounds()

    while True:
        if  button_a.read():
            selected_idx = (selected_idx + 1) % len(datetime)
        if  button_x.read():
            datetime[selected_idx] += 1
        if  button_y.read():
            datetime[selected_idx] = max(datetime[selected_idx] - 1, 1)
        if  button_b.read():
            break

        display.set_pen(BLACK)
        display.clear()

        display.set_pen(WHITE)

        display.text("Next", 10, 10, 30, 2)
        display.text("Inc", display_width - 40, 10, 30, 2)
        display.text("Dec", display_width - 40, display_height - 20, 30, 2)
        display.text("Confirm", 10, display_height - 20, 30, 2)

        display.text("YYYY MM DD HH MM SS", 30,
                     display_height // 2 - 10, display_width - 30, 2)
        display.text(
            " ".join("%s%02d" % (">" if idx == selected_idx else "", sep)
                     for idx, sep in enumerate(datetime)),
            30, display_height // 2 + 10, display_width - 30, 2)

        display.update()
        time.sleep(0.3)

    delta = time.mktime(datetime + [0, 0]) - int(time.time())

    def synchronised_time():
        return int(time.time()) + delta

    return synchronised_time