python canvas画布

image.png

"demo all basic canvas interfaces"

from tkinter import *

canvas = Canvas(width=525, height=300, bg='white') # 0,0 is top left corner
canvas.pack(expand=YES, fill=BOTH) # increases down, right

canvas.create_line(100, 100, 200, 200) # fromX, fromY, toX, toY
canvas.create_line(100, 200, 200, 300) # draw shapes
for i in range(1, 20, 2):
canvas.create_line(0, i, 50, i)

canvas.create_oval(10, 10, 200, 200, width=2, fill='blue')
canvas.create_arc(200, 200, 300, 100)
canvas.create_rectangle(200, 200, 300, 300, width=5, fill='red')
canvas.create_line(0, 300, 150, 150, width=10, fill='green')

photo=PhotoImage(file='../gifs/ora-lp4e.gif')
canvas.create_image(325, 25, image=photo, anchor=NW) # embed a photo

widget = Label(canvas, text='Spam', fg='white', bg='black')
widget.pack()
canvas.create_window(100, 100, window=widget) # embed a widget
canvas.create_text(100, 280, text='Ham') # draw some text
mainloop()

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