micropython-micro-gui/gui/demos/menu.py

# menu.py micro-gui demo of Menu class

# Released under the MIT License (MIT). See LICENSE.
# Copyright (c) 2021 Peter Hinch

import hardware_setup  # Create a display instance
from gui.core.ugui import Screen, ssd
import gui.fonts.freesans20 as font
from gui.core.writer import CWriter

from gui.widgets import Menu, CloseButton
from gui.core.colors import *

class BaseScreen(Screen):

    def __init__(self):
        def cb(button, n):
            print('Help callback', n)

        def cb_sm(lb, n):
            print('Submenu callback', lb.value(), lb.textvalue(), n)

        super().__init__()
        metals2 = (('Gold', cb_sm, (6,)),
                   ('Silver', cb_sm, (7,)),
                   ('Iron', cb_sm, (8,)),
                   ('Zinc', cb_sm, (9,)),
                   ('Copper', cb_sm, (10,)))

        gases = (('Helium', cb_sm, (0,)),
                 ('Neon', cb_sm, (1,)),
                 ('Argon', cb_sm, (2,)),
                 ('Krypton', cb_sm, (3,)),
                 ('Xenon', cb_sm, (4,)),
                 ('Radon', cb_sm, (5,)))

        metals = (('Lithium', cb_sm, (6,)),
                  ('Sodium', cb_sm, (7,)),
                  ('Potassium', cb_sm, (8,)),
                  ('Rubidium', cb_sm, (9,)),
                  ('More', metals2))

        mnu = (('Gas', gases),
               ('Metal',metals),
               ('Help', cb, (2,)))

        wri = CWriter(ssd, font, GREEN, BLACK, verbose=False)
        Menu(wri, bgcolor=BLUE, textcolor=WHITE, args = mnu)
        CloseButton(wri)


Screen.change(BaseScreen)