绘图软件

张育玮

直接上代码^  -  ^

1. from tkinter import *
   
2. from tkinter.colorchooser import *
   
3. 
   
4. root = Tk()
   
5. root.configure(background="gray")
   
6. 
   
7. instruction = Label(root,text="用鼠标左键在画布上画画吧",background= "gray")
   
8. instruction.pack() # 1
   
9. 
   
10. colorButton = Button(root,text="选择颜色")
    
11. colorButton.pack() # 2
    
12. 
    
13. rectButten = Button(root,text="方形")
    
14. rectButten.pack() # 3
    
15. 
    
16. lineButton = Button(root,text="线条")
    
17. lineButton.pack() # 4
    
18. 
    
19. circleButton = Button(root,text="圆圈")
    
20. circleButton.pack() # 5
    
21. 
    
22. clearButton = Button(root,text="清除")
    
23. clearButton.pack() # 6
    
24. 
    
25. myCanvas = Canvas(root,width=400,height=300)
    
26. myCanvas.pack() # 7
    
27. 
    
28. myShape = "line" #使用myShape变量存储当前绘画的图形
    
29. myColor = "black"
    
30. 
    
31. def pen_down(event):
    
32.     global prevX
    
33.     global prevY
    
34.     prevX = event.x
    
35.     prevY = event.y
    
36. myCanvas.bind("<ButtonPress-1>",pen_down)
    
37. # 按下鼠标左键时，得到X、Y的坐标
    
38. 
    
39. def draw (event):
    
40.     global prevX
    
41.     global prevY
    
42.     if myShape == "line":
    
43.         myCanvas.create_line(prevX,prevY,event.x,event.y,fill=myColor)
    
44.         prevX = event.x
    
45.         prevY = event.y
    
46. myCanvas.bind("<B1-Motion>",draw)#当移动鼠标时，如果选择画线，就画线。
    
47. 
    
48. def pen_up(event):
    
49.     if myShape == "circle":
    
50.         myCanvas.create_oval(prevX,prevY,event.x,event.y,fill=myColor)
    
51.     if myShape == "rectangle":
    
52.         myCanvas.create_rectangle(prevX,prevY,event.x,event.y,fill=myColor)
    
53. myCanvas.bind("<ButtonRelease-1>",pen_up)
    
54. #松开鼠标左键时，如果myShape里是圆形，就绘制圆形，松开鼠标左键时，如果myShape里是矩形，就绘制炬形。
    
55. 
    
56. def pick_color(event):
    
57.     global myColor
    
58.     myColor = askcolor()
    
59.     myColor = myColor[1]
    
60. colorButton.bind("<Button-1>",pick_color)
    
61. 
    
62. def clear(event):
    
63.     myCanvas.delete(ALL)
    
64. clearButton.bind("<Button-1>", clear)
    
65. 
    
66. def set_line(event):
    
67.     global myShape
    
68.     myShape = "line"
    
69. lineButton.bind("<Button-1>",set_line)
    
70. #点击线条按钮时，设myShape为线条“line”
    
71. 
    
72. def set_rect(event):
    
73.     global myShape
    
74.     myShape = "rectangle"
    
75. rectButten.bind("<Button-1>",set_rect)
    
76. #点击方形按钮，设myShape为矩形。
    
77. def set_circle(event):
    
78.     global myShape
    
79.     myShape = "circle"
    
80. circleButton.bind("<Button-1>",set_circle)
    
81. 
    
82. mainloop()

复制代码

weiter

这不错啊

张育玮

weiter 发表于 2020-11-14 15:49
这不错啊

谢谢