선

linedraw.py

from Tkinter import *

class LineFactory:
    def __init__(self):
        self.line = None
    def text(self, p):
        canvas.create_text(p.x, p.y-10,
                           text='{0.x}, {0.y}'.format(p))
    def arrow(self, e):
        return canvas.create_line(self.start.x, self.start.y,
                                  e.x, e.y,
                                  arrow=LAST, width=2)
    def start(self, e): self.start = e
    def move(self, e): canvas.delete(self.line); self.line = self.arrow(e)
    def done(self, e):
        if self.line:
            canvas.delete(self.line)
            self.line = None
        self.arrow(e)
        self.text(self.start)
        self.text(e)
        print '{0.x},{0.y},{1.x},{1.y}'.format(self.start, e)

class Mover:
    def __init__(self):
        self.shape = None
    def choose(self, e):
        self.start = e
        x = canvas.canvasx(e.x)
        y = canvas.canvasx(e.y)
        self.shape = canvas.find_closest(x, y)
    def move(self, e):
        canvas.move(self.shape, e.x-self.start.x, e.y-self.start.y)
        self.start = e

#def save(e):
#    fn = '1.eps'
#    canvas.postscript(fn)
#    Image.open(fn).save('1.png')
#    canvas.clear()

l = LineFactory()
m = Mover()

root = Tk()
root.title('')
canvas = Canvas(root, bg='white')
canvas.pack()
canvas.bind('<Button-1>', l.start)
canvas.bind('<B1-Motion>', l.move)
canvas.bind('<ButtonRelease-1>', l.done)
canvas.bind('<Button-2>', m.choose)
canvas.bind('<B2-Motion>', m.move)
#canvas.bind('<Button-3>', save)
canvas.bind('<Button-3>', lambda e: canvas.delete(ALL))
root.mainloop()