Tkinter按钮动画

Question

所以我一直在使用tkinter编写一段简单的python 3.4代码。 D & D.它具有所有基本骰子的按钮，并且允许您输入多个边的按钮。我把它放出来的方式让我想起了一个键盘，所以我想我应该添加一些东西，让你按下按钮来点击按钮。我想出了点击按钮来调用函数的系统，但我无法弄清楚如何让按钮动画去。有没有办法做到这一点？请帮忙。谢谢！

from tkinter import * 
    import tkinter.simpledialog as simpledialog 
    from random import randint 
    import os 



    root = Tk() 
    root.title("Die Roller") 
    root.geometry("200x215") 
    app = Frame(root) 
    app.grid() 



    v = StringVar() 
    w = Label(root, textvariable= v) 
    w.grid() 



    print("Results:") 




    def ad4(): 
      x = randint(1,4) 
      v.set(x) 
      print(x) 

    def ad6(): 
      x = randint(1,6) 
      v.set(x) 
      print(x) 

    def ad8(): 
      x = randint(1,8) 
      v.set(x) 
      print(x) 

    def ad10(): 
      x = randint(1,10) 
      v.set(x) 
      print(x) 

    def ad12(): 
      x = randint(1,12) 
      v.set(x) 
      print(x) 

    def ad20(): 
      x = randint(1,20) 
      v.set(x) 
      print(x) 

    def ad100(): 
      x = randint(1,100) 
      v.set(x) 
      print(x) 

    def other(): 
      try: 
        x = simpledialog.askinteger("Sides", "How many sides are there?") 
        y = randint(1, x) 
        print(y) 
        v.set(y) 
      except TypeError: 
        cls() 

    def cls(): 
     os.system(['clear','cls'][os.name == 'nt']) 





    d4 = Button(app, text = "d4", command=ad4, height = 2, width = 5, fg="white", bg="blue") 
    d4.grid(row=0, column=0, padx=10, pady=10) 

    d6 = Button(app, text = "d6", command=ad6, height = 2, width = 5, fg="white", bg="blue") 
    d6.grid(row=0, column=1, padx=10, pady=10) 

    d8 = Button(app, text = "d8", command=ad8, height = 2, width = 5, fg="white", bg="blue") 
    d8.grid(row=0, column=2, padx=10, pady=10) 

    d10 = Button(app, text = "d10", command=ad10, height = 2, width = 5, fg="white", bg="blue") 
    d10.grid(row=1, column=0, padx=10, pady=10) 

    d12 = Button(app, text = "d12", command=ad12, height = 2, width = 5, fg="white", bg="blue") 
    d12.grid(row=1, column=1, padx=10, pady=10) 

    d20 = Button(app, text = "d20", command=ad20, height = 2, width = 5, fg="white", bg="blue") 
    d20.grid(row=1, column=2, padx=10, pady=10) 

    d100 = Button(app, text = "d100", command=ad100, height = 2, width = 5, fg="white", bg="blue") 
    d100.grid(row=2, column=0, padx=10, pady=10) 

    otherbutton = Button(app, text = "Other", command=other, height = 2, width = 5, fg="white", bg="blue") 
    otherbutton.grid(row=2, column=1, padx=10, pady=10) 

    clearButton = Button(app, text = "Clear", command=cls, height =2, width = 5, fg="white", bg="blue") 
    clearButton.grid(row=2, column=2, padx=10, pady=10) 

    def onKeyPress(event): 
      if event.char == '7': 
        ad4() 
      if event.char == '8': 
        ad6() 
      if event.char == '9': 
        ad8() 
      if event.char == '4': 
        ad10() 
      if event.char == '5': 
        ad12() 
      if event.char == '6': 
        ad20() 
      if event.char == '1': 
        ad100() 
      if event.char == '2': 
        other() 
      if event.char == '3': 
        cls() 


    root.bind('<KeyPress>', onKeyPress) 

    root.mainloop() 

Answer 1

下面是一个简短的演示，说明如何使按钮看起来像按下按钮时按下按钮。诀窍是将其relief参数更改为SUNKEN，稍等片刻，然后将relief更改回RAISED。

#!/usr/bin/env python 

""" "Animate" a Tkinter button 

    Make the button look like it's been pressed when the user 
    hits the key associated with the button. 

    See http://stackoverflow.com/q/31900552/4014959 

    Written by PM 2Ring 2015.08.09 
""" 

import tkinter as tk 

maxbutton = 5 
maxkey = str(maxbutton) 

def button_cb(ch): 
    print('Button ' + ch + ' pressed') 

def onKeyPress(event): 
    ch = event.char 
    if '1' <= ch <= maxkey: 
     #Retrieve this button from the dict 
     b = buttons[ch] 

     #Simulate pushing the button 
     b.config(relief=tk.SUNKEN) 
     button_cb(ch) 

     #Let it pop back up after 200 milliseconds 
     b.after(200, lambda: b.config(relief=tk.RAISED)) 

root = tk.Tk() 
root.title("Key/Button Demo") 

#A dict to save the buttons in. The dict keys are the button texts. 
buttons = {} 

#Make some buttons 
for i in range(1, maxbutton + 1): 
    s = str(i) 
    b = tk.Button(root, text=s, command=lambda ch=s: button_cb(ch)) 
    b.pack(side=tk.LEFT) 

    #Save this button in the dict 
    buttons[s] = b 

root.bind('<KeyPress>', onKeyPress) 

root.mainloop() 

如果你喜欢，你还可以使按键亮起了临时（当你的鼠标指向它像它）当你按下它的关键。为此，您需要在ACTIVE和NORMAL之间切换按钮state。
例如，改变
b.config(relief=tk.SUNKEN)
到
b.config(relief=tk.SUNKEN, state=tk.ACTIVE)

，改变
b.after(200, lambda: b.config(relief=tk.RAISED))
到
b.after(200, lambda: b.config(relief=tk.RAISED, state=tk.NORMAL))