1 from tkinter import *
2 from tkinter.colorchooser import *
3
4 win_width = 900
5 win_height = 500
6
7
8 class Application(Frame):
9
10 def __init__(self, master=None, bgcolor='#000000'):
11 super().__init__(master)
12 self.master = master
13 self.bgcolor = bgcolor
14 self.pack()
15 self.x = 0
16 self.y = 0
17 self.startDrawFlag = False
18 self.lastDraw = 0
19 self.fgcolor = '#ff0000'
20 self.createWidget()
21
22 def createWidget(self):
23 # 创建绘图区
24 self.drawpad = Canvas(root, width=win_width, height=win_height*0.9, bg=self.bgcolor)
25 self.drawpad.pack()
26
27 btn_start = Button(root, text='开始', name='start')
28 btn_start.pack(side='left', padx='10')
29 btn_pen = Button(root, text='画笔', name='pen')
30 btn_pen.pack(side='left', padx='10')
31 btn_rect = Button(root, text='矩形', name='rect')
32 btn_rect.pack(side='left', padx='10')
33 btn_clear = Button(root, text='清屏', name='clear')
34 btn_clear.pack(side='left', padx='10')
35 btn_earser = Button(root, text='橡皮擦', name='eraser')
36 btn_earser.pack(side='left', padx='10')
37 btn_line = Button(root, text='直线', name='line')
38 btn_line.pack(side='left', padx='10')
39 btn_lineArrow = Button(root, text='箭头', name='lineArrow')
40 btn_lineArrow.pack(side='left', padx='10')
41 btn_color = Button(root, text='颜色', name='color')
42 btn_color.pack(side='left', padx='10')
43
44 btn_pen.bind_class('Button', '<1>', self.eventManager)
45 self.drawpad.bind('<ButtonRelease-1>', self.stopDraw)
46 root.bind('<KeyPress-r>', self.kuaijiejian)
47 root.bind('<KeyPress-g>', self.kuaijiejian)
48 root.bind('<KeyPress-y>', self.kuaijiejian)
49
50
51 def eventManager(self, event):
52 name = event.widget.winfo_name()
53 print(name)
54 if name == 'line':
55 self.drawpad.bind('<B1-Motion>', self.myline)
56 elif name == 'lineArrow':
57 self.drawpad.bind('<B1-Motion>', self.mylineArrow)
58 elif name == 'rect':
59 self.drawpad.bind('<B1-Motion>', self.myRect)
60 elif name == 'pen':
61 self.drawpad.bind('<B1-Motion>', self.myPen)
62 elif name == 'eraser':
63 self.drawpad.bind('<B1-Motion>', self.myEraser)
64 elif name == 'clear':
65 self.drawpad.delete('all')
66 elif name == 'color':
67 c = askcolor(color=self.fgcolor, title='选择画笔颜色')
68 self.fgcolor = c[1]
69
70
71 def stopDraw(self, event):
72 self.startDrawFlag = False
73 self.lastDraw = 0
74
75 def startDraw(self, event):
76 self.drawpad.delete(self.lastDraw)
77 if not self.startDrawFlag:
78 self.startDrawFlag = True
79 self.x = event.x
80 self.y = event.y
81
82 def myline(self, event):
83 self.startDraw(event)
84 self.lastDraw = self.drawpad.create_line(self.x, self.y, event.x, event.y, fill=self.fgcolor)
85
86 def mylineArrow(self, event):
87 self.startDraw(event)
88 self.lastDraw = self.drawpad.create_line(self.x, self.y, event.x, event.y, arrow = LAST, fill=self.fgcolor)
89
90 def myRect(self, event):
91 self.startDraw(event)
92 self.lastDraw = self.drawpad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor)
93
94 def myPen(self, event):
95 self.startDraw(event)
96 self.drawpad.create_line(self.x, self.y, event.x, event.y, fill=self.fgcolor)
97 self.x = event.x
98 self.y = event.y
99
100 def myEraser(self, event):
101 self.startDraw(event)
102 self.drawpad.create_rectangle(event.x-5, event.y-5, event.x+5, event.y+5, fill=self.bgcolor)
103
104 def kuaijiejian(self, event):
105 if event.char == 'r':
106 self.fgcolor = '#ff0000'
107 elif event.char == 'g':
108 self.fgcolor = '#00ff00'
109 elif event.char == 'y':
110 self.fgcolor = '#ffff00'
111
112
113
114
115 if __name__ == '__main__':
116 root = Tk()
117 root.geometry(str(win_width)+'x'+str(win_height)+'+100+100')
118 root.title('绘图')
119 app = Application(master=root)
120 root.mainloop()
