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""" Script for Tkinter GUI chat client. """
# Based on https://github.com/KetanSingh11/SimpleChatApp
import tkinter
from socket import AF_INET, socket, SOCK_STREAM, IPPROTO_TCP, TCP_NODELAY
from threading import Thread
def receive():
""" Handles receiving of messages. """
while True:
try:
msg = sock.recv(BUFSIZ).decode("utf8")
if not msg:
print("Received empty data - closing connection\n")
break
msg_list.insert(tkinter.END, msg)
print("Received: ", msg)
except Exception as e: # Possibly client has left the chat.
print("receive error\n", e)
break
def send(event=None):
""" Handles sending of messages. """
msg = my_msg.get()
my_msg.set("") # Clears input field.
msg += "\n"
sock.send(bytes(msg, "utf8"))
def on_closing(event=None):
""" This function is to be called when the window is closed. """
sock.close()
top.quit()
top = tkinter.Tk()
top.title("Simple Chat Client v1.0")
messages_frame = tkinter.Frame(top)
my_msg = tkinter.StringVar() # For the messages to be sent.
my_msg.set("")
scrollbar = tkinter.Scrollbar(messages_frame) # To navigate through past messages.
msg_list = tkinter.Listbox(messages_frame, height=15, width=70, yscrollcommand=scrollbar.set)
scrollbar.pack(side=tkinter.RIGHT, fill=tkinter.Y)
msg_list.pack(side=tkinter.LEFT, fill=tkinter.BOTH)
msg_list.pack()
messages_frame.pack()
button_label = tkinter.Label(top, text="Enter Message:")
button_label.pack()
entry_field = tkinter.Entry(top, textvariable=my_msg, foreground="Red")
entry_field.bind("<Return>", send)
entry_field.pack()
send_button = tkinter.Button(top, text="Send", command=send)
send_button.pack()
quit_button = tkinter.Button(top, text="Quit", command=on_closing)
quit_button.pack()
top.protocol("WM_DELETE_WINDOW", on_closing)
HOST = "127.0.0.1"
PORT = 8878
BUFSIZ = 1024
ADDR = (HOST, PORT)
sock = socket(AF_INET, SOCK_STREAM)
sock.setsockopt(IPPROTO_TCP, TCP_NODELAY, 1)
sock.connect(ADDR)
receive_thread = Thread(target=receive)
receive_thread.start()
tkinter.mainloop() # Starts GUI execution. |
