Python-使用tkinter canvas绘制的电子时钟

 1 #!/usr/bin/env python
 2 # -*- coding: utf-8 -*-
 3  
 4 from tkinter import *
 5 import math
 6 import threading
 7 import time
 8  
 9 
10 root = Tk()
11 cv = Canvas(root, bg='white')
12 cv.create_oval(10,10,210,210,fill='yellow')
13 cv.pack()
14 for num in range(12):
15     angle=num*30
16     x1 = abs(round(math.cos(math.pi*angle/180)*95)+110)
17     y1 = abs(110 - round(math.sin(math.pi*angle/180)*95))
18     x2 = abs(round(math.cos(math.pi*angle/180)*100)+110)
19     y2 = abs(110 - round(math.sin(math.pi*angle/180)*100))
20     if angle not in (0, 90, 180, 270):
21         cv.create_line(x1, y1, x2, y2)
22 
23 cv.create_line(110, 10, 110, 20, width=2, fill='red') # 12
24 cv.create_text(110, 35, text='12')
25 cv.create_line(110, 200, 110, 210, width=2, fill='red') # 6 
26 cv.create_text(110, 185, text='6')
27 cv.create_line(10, 110, 20, 110, width=2, fill='red') # 9
28 cv.create_text(35, 110, text='9')
29 cv.create_line(200, 110, 210, 110, width=2, fill='red') # 3
30 cv.create_text(185, 110, text='3')
31 sec_pointer = cv.create_line(110, 110, 110, 110, fill='gray')
32 miu_pointer = cv.create_line(110, 110, 110, 110, fill='green', width=2)
33 hor_pointer = cv.create_line(110, 110, 110, 110, fill='red', width=3)
34 cnt_point = cv.create_oval(107, 107, 113, 113, fill='black')
35 
36 time_struct = time.localtime()
37 hour = time_struct.tm_hour - 12 if time_struct.tm_hour > 12 else time_struct.tm_hour
38 _min = time_struct.tm_min
39 sec = time_struct.tm_sec
40 
41 init_sec = sec*6
42 init_miu = _min*6 + sec*6/60
43 init_hor = hour * 30 + _min * 30/3600*60 + sec * 30/3600
44 
45 
46 def draw_pointer():
47     sec = 90 - init_sec
48     miu = 90 - init_miu
49     hor = 90 - init_hor
50     try:
51         while True:
52             x1 = abs(round(math.cos(math.pi*sec/180)*90)+110)
53             y1 = abs(110 - round(math.sin(math.pi*sec/180)*90))
54             x2 = abs(round(math.cos(math.pi*miu/180)*70)+110)
55             y2 = abs(110 - round(math.sin(math.pi*miu/180)*70))
56             x3 = abs(round(math.cos(math.pi*hor/180)*36)+110)
57             y3 = abs(110 - round(math.sin(math.pi*hor/180)*36))
58             cv.coords(sec_pointer, 110, 110, x1, y1)
59             cv.coords(miu_pointer, 110, 110, x2, y2)
60             cv.coords(hor_pointer, 110, 110, x3, y3)
61             if sec == -180:
62                 sec = 180
63             if miu == -180:
64                 miu = 180
65             if hor == -180:
66                 hor = 180
67             sec -=  6
68             miu -= 6/60
69             hor -= 30/3600
70             time.sleep(1)
71     except RuntimeError as e:
72         exit(0)
73 
74 
75 td = threading.Thread(target=draw_pointer,).start()
76 root.mainloop()

界面截图：

canvas部件使用方法参考地址：https://www.runoob.com/python/python-tk-canvas.html