import tkinter as tk
import time
# TODO: async or threading to run long-running other processes
class RunnerApp(tk.Frame):
def __init__(self, parent=None):
super().__init__(parent)
self.pack()
# Capture event when someone closes the window with the X on the top-right corner of the window
parent.protocol("WM_DELETE_WINDOW", self.close_app)
self.QUIT = tk.Button(self)
self.QUIT["text"] = "QUIT"
self.QUIT["fg"] = "red"
self.QUIT["command"] = self.close_app
self.QUIT.pack({"side": "left"})
self.start_button = tk.Button(self)
self.start_button["text"] = "Start"
self.start_button["command"] = self.start
self.start_button.pack({"side": "left"})
self.stop_button = tk.Button(self)
self.stop_button["text"] = "Stop"
self.stop_button["command"] = self.stop
self.stop_button.pack({"side": "left"})
self.text = tk.Text(self, state='disabled')
self.text.pack({"side": "bottom"})
self.stop_process = False
def close_app(self):
print("close")
self.stop_process = True
self.quit()
def stop(self):
print("stop")
self.stop_process = True
self.add_line('stop')
def start(self):
self.stop_process = False
for i in range(100):
if self.stop_process:
break
self.add_line(str(i))
time.sleep(0.1)
def add_line(self, line):
self.text['state'] = 'normal' # allow editing of the Text widget
self.text.insert('end', line + "\n")
self.text['state'] = 'disabled' # disable editing
self.text.see('end') # scroll to the end as we make progress
self.update() # update the content and allow other events (e.g. from stop and quit buttons) to take place
def main():
tk_root = tk.Tk()
app = RunnerApp(parent=tk_root)
tk_root.lift()
tk_root.call('wm', 'attributes', '.', '-topmost', True)
tk_root.after_idle(tk_root.call, 'wm', 'attributes', '.', '-topmost', False)
app.mainloop()
main()