Python Chapter 9: 使用Tkinter进行GUI程序设计 Exercise

Exercise 9_1:

 1 # Exercise 9.1 by TBNR_Gabriel
 2 from tkinter import *
 3 
 4 class movingBall:
 5     def __init__(self):
 6         window = Tk()
 7         window.title("Moving Ball")
 8 
 9         self.x = 100
10         self.y = 50
11         self.radius = 3
12 
13         frame1 = Frame()
14         frame1.pack()
15         self.canvas = Canvas(frame1, width = 200, height = 100, bg = "white")
16         self.canvas.pack()
17         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, fill = "red", tags = "oval")
18 
19         frame2 = Frame()
20         frame2.pack()
21         btRight = Button(frame2, text = "Right", command = self.right)
22         btRight.pack(side = LEFT)
23         btLeft = Button(frame2, text = "Left", command = self.left)
24         btLeft.pack(side = LEFT)
25         btUp = Button(frame2, text = "Up", command = self.up)
26         btUp.pack(side = LEFT)
27         btDown = Button(frame2, text = "Down", command = self.down)
28         btDown.pack(side = LEFT)
29 
30         window.mainloop()
31 
32     def right(self):
33         if self.x <= 190:
34             self.x += 10
35         elif self.x == 200:
36             self.x = 0
37         self.canvas.delete("oval")
38         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, fill = "red", tags = "oval")
39 
40     def left(self):
41         if self.x >= 10:
42             self.x -= 10
43         elif self.x == 0:
44             self.x = 200
45         self.canvas.delete("oval")
46         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, fill = "red", tags = "oval")
47 
48     def up(self):
49         if self.y >= 10:
50             self.y -= 10
51         elif self.y == 0:
52             self.y = 100
53         self.canvas.delete("oval")
54         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, fill = "red", tags = "oval")
55 
56     def down(self):
57         if self.y <= 90:
58             self.y += 10
59         elif self.y == 100:
60             self.y = 0
61         self.canvas.delete("oval")
62         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, fill = "red", tags = "oval")
63 
64 movingBall()

Exercise 9_19:

 1 # Exercise 9.19 by TBNR_Gabriel
 2 from tkinter import *
 3 
 4 class movingBall2:
 5     def __init__(self):
 6         window = Tk()
 7         window.title("Moving Ball")
 8 
 9         self.width = 1200
10         self.height = 700
11 
12         self.canvas = Canvas(window, width = self.width, height = self.height, bg = "blue")
13         self.canvas.pack()
14 
15         self.x = self.width / 2
16         self.y = self.height
17         self.radius = self.height / 14
18        
19         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, tags = "oval", fill = "yellow")
20 
21         self.canvas.bind("<Key>", self.process)
22         self.canvas.focus_set()
23         window.mainloop()
24 
25     def process(self, event):
26         if event.keysym == "w":
27             self.up()
28         elif event.keysym == "a":
29             self.left()
30         elif event.keysym == "s":
31             self.down()
32         elif event.keysym == "d":
33             self.right()
34         if self.y == 100:
35             self.canvas.create_text(800, 100, text = "海上升明月，coding共此时", font = "Times 16 bold", tags = "string")
36             self.canvas.create_text(815, 150, text = "中秋快乐", font = "Times 16 bold", tags = "string")
37     
38     def up(self):
39         if self.y >= 10:
40             self.y -= 10
41         elif self.y == 0:
42             self.y = self.height
43         self.canvas.delete("oval")
44         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, tags = "oval", fill = "yellow")
45 
46     def down(self):
47         if self.y <= self.height - 10:
48             self.y += 10
49         elif self.y == self.height:
50             self.y = 0
51         self.canvas.delete("oval")
52         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, tags = "oval", fill = "yellow")
53 
54     def left(self):
55         if self.x >= 10:
56             self.x -= 10
57         elif self.x == 0:
58             self.x = self.width
59         self.canvas.delete("oval")
60         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, tags = "oval", fill = "yellow")
61 
62     def right(self):
63         if self.x <= self.width - 10:
64             self.x += 10
65         elif self.x == self.width:
66             self.x = 0
67         self.canvas.delete("oval")
68         self.canvas.create_oval(self.x - self.radius, self.y - self.radius, self.x + self.radius, self.y + self.radius, tags = "oval", fill = "yellow")
69 
70 movingBall2()

Exercise 9.25:

 1 # Exercise 9.25 by TBNR_Gabriel
 2 from tkinter import *
 3 
 4 class trafficLight:
 5     def __init__(self):
 6         window = Tk()
 7         window.title("Traffic Light")
 8 
 9         frame1 = Frame(window)
10         frame1.pack()
11         self.canvas = Canvas(frame1, width = 100, height = 200, bg = "white")
12         self.canvas.pack()
13         self.canvas.create_oval(20, 10, 80, 70, tags = "oval1")
14         self.canvas.create_oval(20, 70, 80, 130, tags = "oval2")
15         self.canvas.create_oval(20, 130, 80, 190, tags = "oval3")
16 
17         frame2 = Frame(window)
18         frame2.pack()
19         self.v1 = IntVar()
20         rbRed = Radiobutton(frame2, text = "Red", bg = "red", variable = self.v1, value = 1, command = self.processRadiobutton)
21         rbRed.pack(side = LEFT)
22         rbYellow = Radiobutton(frame2, text = "Yellow", bg = "yellow", variable = self.v1, value = 2, command = self.processRadiobutton)
23         rbYellow.pack(side = LEFT)
24         rbGreen = Radiobutton(frame2, text = "Green", bg = "green", variable = self.v1, value = 3, command = self.processRadiobutton)
25         rbGreen.pack(side = LEFT)
26 
27     def processRadiobutton(self):
28         if self.v1.get() == 1:
29             self.canvas.delete("oval1", "oval2", "oval3")
30             self.canvas.create_oval(20, 10, 80, 70, tags = "oval1", fill = "red")
31             self.canvas.create_oval(20, 70, 80, 130, tags = "oval2")
32             self.canvas.create_oval(20, 130, 80, 190, tags = "oval3")
33         elif self.v1.get() == 2:
34             self.canvas.delete("oval1", "oval2", "oval3")
35             self.canvas.create_oval(20, 10, 80, 70, tags = "oval1")
36             self.canvas.create_oval(20, 70, 80, 130, tags = "oval2", fill = "yellow")
37             self.canvas.create_oval(20, 130, 80, 190, tags = "oval3")
38         elif self.v1.get() == 3:
39             self.canvas.delete("oval1", "oval2", "oval3")
40             self.canvas.create_oval(20, 10, 80, 70, tags = "oval1")
41             self.canvas.create_oval(20, 70, 80, 130, tags = "oval2")
42             self.canvas.create_oval(20, 130, 80, 190, tags = "oval3", fill = "green")
43 
44 trafficLight()

 

posted @ 2018-09-25 16:04  Gabriel_Ham  阅读(224)  评论(0)  编辑  收藏  举报