task5_2_gui.py

import tkinter as tk
from gpiozero import LED, PWMLED

# These are the GPIO pins I used for each light
# The living room light uses PWMLED because it needs brightness control
living_room_led = PWMLED(17)
bathroom_led = LED(27)
closet_led = LED(22)

# These variables help the program remember if each light is on or off
living_room_on = False
bathroom_on = False
closet_on = False


def toggle_living_room():
    global living_room_on

    living_room_on = not living_room_on

    if living_room_on:
        # Full brightness when the button is turned on
        living_room_led.value = 1
        living_room_button.config(text="Living Room ON")
        living_slider.set(100)
        status_label.config(text="Living room brightness: 100%")
    else:
        # Zero brightness means the LED is off
        living_room_led.value = 0
        living_room_button.config(text="Living Room OFF")
        living_slider.set(0)
        status_label.config(text="Living room brightness: 0%")


def toggle_bathroom():
    global bathroom_on

    bathroom_on = not bathroom_on

    if bathroom_on:
        bathroom_led.on()
        bathroom_button.config(text="Bathroom ON")
    else:
        bathroom_led.off()
        bathroom_button.config(text="Bathroom OFF")


def toggle_closet():
    global closet_on

    closet_on = not closet_on

    if closet_on:
        closet_led.on()
        closet_button.config(text="Closet ON")
    else:
        closet_led.off()
        closet_button.config(text="Closet OFF")


def change_living_brightness(value):
    global living_room_on

    # The slider gives a number from 0 to 100
    # PWMLED needs a value between 0 and 1, so I divide by 100
    brightness = int(value)
    living_room_led.value = brightness / 100

    if brightness == 0:
        living_room_on = False
        living_room_button.config(text="Living Room OFF")
    else:
        living_room_on = True
        living_room_button.config(text="Living Room ON")

    status_label.config(text=f"Living room brightness: {brightness}%")


def turn_all_off():
    global living_room_on, bathroom_on, closet_on

    # Turn all lights off together
    living_room_led.value = 0
    bathroom_led.off()
    closet_led.off()

    living_room_on = False
    bathroom_on = False
    closet_on = False

    living_room_button.config(text="Living Room OFF")
    bathroom_button.config(text="Bathroom OFF")
    closet_button.config(text="Closet OFF")

    living_slider.set(0)
    status_label.config(text="Living room brightness: 0%")


def exit_program():
    # Turn everything off before closing the program
    living_room_led.value = 0
    bathroom_led.off()
    closet_led.off()
    window.destroy()


# Main window for the GUI
window = tk.Tk()
window.title("Task 5.2C Light Intensity GUI")
window.geometry("420x430")

heading_label = tk.Label(
    window,
    text="Linda's Home Light Control",
    font=("Arial", 16)
)
heading_label.pack(pady=10)

instruction_label = tk.Label(
    window,
    text="Use the buttons and slider to control the lights"
)
instruction_label.pack(pady=5)

living_room_button = tk.Button(
    window,
    text="Living Room OFF",
    width=22,
    command=toggle_living_room
)
living_room_button.pack(pady=5)

slider_label = tk.Label(
    window,
    text="Living Room Light Intensity"
)
slider_label.pack(pady=5)

living_slider = tk.Scale(
    window,
    from_=0,
    to=100,
    orient=tk.HORIZONTAL,
    length=260,
    command=change_living_brightness
)
living_slider.pack(pady=5)

status_label = tk.Label(
    window,
    text="Living room brightness: 0%"
)
status_label.pack(pady=5)

bathroom_button = tk.Button(
    window,
    text="Bathroom OFF",
    width=22,
    command=toggle_bathroom
)
bathroom_button.pack(pady=5)

closet_button = tk.Button(
    window,
    text="Closet OFF",
    width=22,
    command=toggle_closet
)
closet_button.pack(pady=5)

all_off_button = tk.Button(
    window,
    text="Turn All Lights OFF",
    width=22,
    command=turn_all_off
)
all_off_button.pack(pady=10)

exit_button = tk.Button(
    window,
    text="Exit",
    width=22,
    command=exit_program
)
exit_button.pack(pady=5)

window.protocol("WM_DELETE_WINDOW", exit_program)

window.mainloop()