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tkinter入门,canvas实现百度,抖音,加载

2018-08-21 05:43:49来源：博客园阅读 ()

对于tkinter的各个控件,可以参看 : https://blog.csdn.net/weixin_38532159/article/details/78379523

这个已经比较全面了

今天利用tkinter实现一下百度,抖音的加载- - 又是造轮子,首先看一下实现的效果图

导包:

1 from tkinter import *
2 import time

需要注意的是tkinter中的t必须是小写字母

主要控件及自变量:

 1 　　　　　master = Tk()
 2         master.title('this is a waitpic Demo')
 3         title = Label(master, text='请选择等待图案',font='15',bg='yellow',fg='grey')
 4         title.pack(fill=X)
 5 
 6         self.canvaswidth = 1000
 7         self.canvasheight = 600
 8         self.centerx = self.canvaswidth // 2
 9         self.centery = self.canvasheight // 2
10         self.topx = self.centerx - 50
11         self.topy = self.centery -50
12         self.bottomx = self.centerx + 50
13         self.bottomy = self.centery + 50
14         self.mycanvas = Canvas(master, width=self.canvaswidth,height=self.canvasheight, bg='White')
15         self.mycanvas.pack() 
16         self.mycanvas.create_text(100,20,text='happy life exeryday')
17 
18         bt1 = Button(master,text='图案1',command=self.display1)
19         bt2 = Button(master,text='图案2',command=self.display2)
20         btclear = Button(master,text='清空',command=self.clearCanvas)
21         bt1.pack(side=LEFT)
22         bt2.pack(side=LEFT)
23         btclear.pack(side=RIGHT)

主要添加控件的逻辑是:

1.声明一个Tk()对象,或者是frame对象

2.对于控件 : 控件x(tk/frame,**kwargs)

3.对控件进行布局,参见一开始给的博客

添加控件后,记得加上,如此才能有显示

master.mainloop()

对于百度的加载框的实现:

1.实现思路: 三个圆交替,查找API,看到特别有用的move,update---->get~

 1         olred = self.mycanvas.create_oval(self.topx, self.topy, self.bottomx, self.bottomy, tag='display1', fill='red')
 2         olyellow = self.mycanvas.create_oval( self.topx, self.topy, self.bottomx, self.bottomy, tag='display1', fill='yellow')
 3         olgreen = self.mycanvas.create_oval( self.topx, self.topy, self.bottomx , self.bottomy, tag='diaplay1', fill='green')
 4         ols = [olred, olyellow, olgreen]
 5         movingx , movingy = 0, 1
 6         for count in range(4):
 7             for i in range(100):
 8                 self.mycanvas.move(ols[movingx % 3],-2, 0)
 9                 self.mycanvas.move(ols[movingy % 3],+2, 0)
10                 self.mycanvas.update()
11                 time.sleep(0.01)
12             for j in range(100):
13                 self.mycanvas.move(ols[movingx % 3],+2,0)
14                 self.mycanvas.move(ols[movingy % 3],-2,0)
15                 self.mycanvas.update()
16                 time.sleep(0.01)
17             movingx += 1
18             movingy += 1

对于抖音的加载框的实现:由于抖音刷的太快..我也没看太清楚呢,就先实现成这样.. :有造轮子的大佬可以互相探讨一下

 1 sizes = [size for size in range(0,100,5)]
 2         ols = []
 3         colors = ['red','green']
 4         cx , cy = 0,1
 5         for count in range(10):
 6             for offset in sizes:
 7                 olleft = self.mycanvas.create_oval(self.topx - 100 + offset,self.topy + offset,self.bottomx -100 - offset,self.bottomy - offset,
 8                                                 fill=colors[cx % 2],outline=colors[cx % 2],tag='display2')
 9                 olright = self.mycanvas.create_oval(self.topx + offset,self.topy + offset,self.bottomx-offset,self.bottomy - offset,
10                                                 fill=colors[cy % 2],outline=colors[cy % 2],tag='display2')
11                 ols.append(olleft)
12                 ols.append(olright)
13                 self.mycanvas.move(olleft,offset,0)
14                 self.mycanvas.move(olright,-offset,0)
15                 self.mycanvas.update()
16                 time.sleep(0.1)
17             
18             for ol in ols:
19                 self.mycanvas.delete(ol) 
20             cx += 1
21             cy += 1

全部代码:

 1 from tkinter import *
 2 import time
 3 
 4 class wait_:
 5     def __init__(self):
 6         master = Tk()
 7         master.title('this is a waitpic Demo')
 8         title = Label(master, text='请选择等待图案',font='15',bg='yellow',fg='grey')
 9         title.pack(fill=X)
10 
11         self.canvaswidth = 1000
12         self.canvasheight = 600
13         self.centerx = self.canvaswidth // 2
14         self.centery = self.canvasheight // 2
15         self.topx = self.centerx - 50
16         self.topy = self.centery -50
17         self.bottomx = self.centerx + 50
18         self.bottomy = self.centery + 50
19         self.mycanvas = Canvas(master, width=self.canvaswidth,height=self.canvasheight, bg='White')
20         self.mycanvas.pack() 
21         self.mycanvas.create_text(100,20,text='happy life exeryday')
22 
23         bt1 = Button(master,text='图案1',command=self.display1)
24         bt2 = Button(master,text='图案2',command=self.display2)
25         btclear = Button(master,text='清空',command=self.clearCanvas)
26         bt1.pack(side=LEFT)
27         bt2.pack(side=LEFT)
28         btclear.pack(side=RIGHT)
29 
30         master.mainloop()
31 
32     def display1(self):
33         olred = self.mycanvas.create_oval(self.topx, self.topy, self.bottomx, self.bottomy, tag='display1', fill='red')
34         olyellow = self.mycanvas.create_oval( self.topx, self.topy, self.bottomx, self.bottomy, tag='display1', fill='yellow')
35         olgreen = self.mycanvas.create_oval( self.topx, self.topy, self.bottomx , self.bottomy, tag='diaplay1', fill='green')
36         ols = [olred, olyellow, olgreen]
37         movingx , movingy = 0, 1
38         for count in range(4):
39             for i in range(100):
40                 self.mycanvas.move(ols[movingx % 3],-2, 0)
41                 self.mycanvas.move(ols[movingy % 3],+2, 0)
42                 self.mycanvas.update()
43                 time.sleep(0.01)
44             for j in range(100):
45                 self.mycanvas.move(ols[movingx % 3],+2,0)
46                 self.mycanvas.move(ols[movingy % 3],-2,0)
47                 self.mycanvas.update()
48                 time.sleep(0.01)
49             movingx += 1
50             movingy += 1
51 
52     def display2(self):
53         sizes = [size for size in range(0,100,5)]
54         ols = []
55         colors = ['red','green']
56         cx , cy = 0,1
57         for count in range(10):
58             for offset in sizes:
59                 olleft = self.mycanvas.create_oval(self.topx - 100 + offset,self.topy + offset,self.bottomx -100 - offset,self.bottomy - offset,
60                                                 fill=colors[cx % 2],outline=colors[cx % 2],tag='display2')
61                 olright = self.mycanvas.create_oval(self.topx + offset,self.topy + offset,self.bottomx-offset,self.bottomy - offset,
62                                                 fill=colors[cy % 2],outline=colors[cy % 2],tag='display2')
63                 ols.append(olleft)
64                 ols.append(olright)
65                 self.mycanvas.move(olleft,offset,0)
66                 self.mycanvas.move(olright,-offset,0)
67                 self.mycanvas.update()
68                 time.sleep(0.1)
69             
70             for ol in ols:
71                 self.mycanvas.delete(ol) 
72             cx += 1
73             cy += 1
74     
75     def clearCanvas(self):
76         self.mycanvas.delete('display1','display2')
77 
78 wait_()