This program was adapted from the SAMPLES directory that comes with Python. It allows two people to draw on a program with someone else watching and, at the same time watch what the other person is drawing also.
Python, 111 lines
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PORT = 8080
from Tkinter import *
import tkColorChooser
import socket
import thread
import spots
################################################################################
def main():
global hold, fill, draw, look
hold = []
fill = '#000000'
connect()
root = Tk()
root.title('Paint 2.0')
root.resizable(False, False)
upper = LabelFrame(root, text='Your Canvas')
lower = LabelFrame(root, text='Their Canvas')
draw = Canvas(upper, bg='#ffffff', width=400, height=300, highlightthickness=0)
look = Canvas(lower, bg='#ffffff', width=400, height=300, highlightthickness=0)
cursor = Button(upper, text='Cursor Color', command=change_cursor)
canvas = Button(upper, text='Canvas Color', command=change_canvas)
draw.bind('<Motion>', motion)
draw.bind('<ButtonPress-1>', press)
draw.bind('<ButtonRelease-1>', release)
draw.bind('<Button-3>', delete)
upper.grid(padx=5, pady=5)
lower.grid(padx=5, pady=5)
draw.grid(row=0, column=0, padx=5, pady=5, columnspan=2)
look.grid(padx=5, pady=5)
cursor.grid(row=1, column=0, padx=5, pady=5, sticky=EW)
canvas.grid(row=1, column=1, padx=5, pady=5, sticky=EW)
root.mainloop()
################################################################################
def connect():
try:
start_client()
except:
start_server()
thread.start_new_thread(processor, ())
def start_client():
global ZSP
server = socket.socket()
server.connect((HOST, PORT))
ZSP = spots.ZSP(server)
def start_server():
global ZSP
server = socket.socket()
server.bind(('', PORT))
server.listen(1)
ZSP = spots.ZSP(server.accept()[0])
def processor():
while True:
func, args, kwargs = ZSP.recv()
getattr(look, func)(*args, **kwargs)
def call(func, *args, **kwargs):
ZSP.send((func, args, kwargs))
################################################################################
def change_cursor():
global fill
color = tkColorChooser.askcolor(color=fill)[1]
if color is not None:
fill = color
def change_canvas():
color = tkColorChooser.askcolor(color=draw['bg'])[1]
if color is not None:
draw.config(bg=color)
call('config', bg=color)
################################################################################
def motion(event):
if hold:
hold.extend([event.x, event.y])
event.widget.create_line(hold[-4:], fill=fill, tag='TEMP')
call('create_line', hold[-4:], fill=fill, tag='TEMP')
def press(event):
global hold
hold = [event.x, event.y]
def release(event):
global hold
if len(hold) > 2:
event.widget.delete('TEMP')
event.widget.create_line(hold, fill=fill, smooth=True)
call('delete', 'TEMP')
call('create_line', hold, fill=fill, smooth=True)
hold = []
def delete(event):
event.widget.delete(ALL)
call('delete', ALL)
################################################################################
if __name__ == '__main__':
main()
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This program is useful for communication of a network where the drawing is more helpful than than typing. A server program has also been tested for Paint 2.0 that allows a record of the drawing to be saved and later played back from a file.
Tags: graphics
