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python - 切换不工作的“键盘”Python 和 Tkinter

问题描述

你好，我的开关不工作，

工作代码：当我按下 xa 45 秒计时器启动。45 秒后，计时器消失，然后当我再次按 x 时，没有任何反应。

我想要实现的目标：45 秒后，我想再次单击 x 以再次启动计时器并继续执行此操作：

from tkinter import *
import keyboard
from playsound import playsound

root = Tk()

root.geometry("+0+0")
root.overrideredirect(True)
root.wm_attributes("-topmost", True)
root.wm_attributes("-alpha", 0.01)
root.resizable(0, 0)

seconds = 45

toggle_button = 'x'

enabled = False

def countdown(time):
    if time > 0:
        mins, secs = divmod(time, 60)

        def color_change(t_time):
            if t_time > 10:
                return 'green'
            elif 7 <= t_time <= 10:
                return 'yellow'
            elif t_time < 7:
                return 'red'

        timer_display.config(text="{:02d}:{:02d}".format(mins, secs),
                             fg=color_change(time)), root.after(1000, countdown, time - 1)
    else:
        root.wm_attributes('-alpha', 0.01)


def start_countdown():
    root.wm_attributes('-alpha', 0.7)
    countdown(seconds)


timer_display = Label(root, font=('Trebuchet MS', 30, 'bold'), bg='black')
timer_display.pack()

last_state = False


while True:
    key_down = keyboard.is_pressed(toggle_button)
    # If the toggle button is pressed, toggle the enabled value and print
    if key_down != last_state:
        last_state = key_down
        if last_state:
            enabled = True
            if enabled:
                start_countdown()
                print("Activated")
                playsound('count.mp3')
            else:
                start_countdown()
        root.mainloop()

标签： pythontkinter

解决方案

在您的代码中，tkinter 循环阻塞了主循环。计时器完成后，您需要退出 tk 循环。只有在启动计时器时才需要启动 tk 循环，否则 tk 循环将永远不会退出。

这是工作代码：

import tkinter as tkr
import keyboard
from playsound import playsound

root = None
timer_display = None

root = tkr.Tk()
root.geometry("+0+0")
root.overrideredirect(True)
root.wm_attributes("-topmost", True)
root.wm_attributes("-alpha", 0.01)
root.resizable(0, 0)

timer_display = tkr.Label(root, font=('Trebuchet MS', 30, 'bold'), bg='black')
timer_display.pack()

seconds = 45

toggle_button = 'x'

enabled = False

def countdown(time):
    if time > 0:
        mins, secs = divmod(time, 60)

        def color_change(t_time):
            if t_time > 10:
                return 'green'
            elif 7 <= t_time <= 10:
                return 'yellow'
            elif t_time < 7:
                return 'red'

        timer_display.config(text="{:02d}:{:02d}".format(mins, secs),
                             fg=color_change(time)), root.after(1000, countdown, time - 1)
    else:
        root.wm_attributes('-alpha', 0.01)
        root.quit()  # exit tk root loop


def start_countdown():
    root.wm_attributes('-alpha', 0.7)
    countdown(seconds)

last_state = False


while True:
    key_down = keyboard.is_pressed(toggle_button)
    # If the toggle button is pressed, toggle the enabled value and print
    if key_down != last_state:
        last_state = key_down
        if last_state:
            enabled = True
            if enabled:
                start_countdown()
                print("Activated")
                playsound('count.mp3')
            else:
                start_countdown()
            root.mainloop()  # timer will exit this loop

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