gistfile1.txt

#!/usr/bin/python3
import re
import subprocess
import tkinter as tk
from Xlib import display


def lambda_factory(index):
	global labels
	global buttons
	return lambda: remove(index, labels, buttons)


def remove(index, labels, buttons):
	global root

	subprocess.call(['todo', '-r', str(index)], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
	for label in labels:
		label.destroy()

	for button in buttons:
		button.destroy()

	labels.clear()
	buttons.clear()

	todo_items = esc_seq_reg.sub('', subprocess.check_output(['todo']).decode()).split('\n')[1:-1]
	buttons_and_labels(root, todo_items, buttons, labels)


def buttons_and_labels(root, todo_items, buttons, labels):
	for index, item in enumerate(todo_items):
		labels.append(tk.Label(root, text=item))
		labels[index].grid(column=0, row=index, sticky="w")

		buttons.append(tk.Button(root, text='x', command=lambda_factory(index)))
		buttons[index].grid(column=1, row=index, sticky="e")


root = tk.Tk()
esc_seq_reg = re.compile(r'\x1b[^m]*m')
m_pos = display.Display().screen().root.query_pointer()

todo_items = esc_seq_reg.sub('', subprocess.check_output(['todo']).decode()).split('\n')[1:-1]
labels = []
buttons = []

buttons_and_labels(root, todo_items, buttons, labels)

root.bind('<Escape>', lambda a: root.destroy())
root.bind('<FocusOut>', lambda a: root.destroy())
root.wait_visibility(root)
root.wm_attributes('-type', 'splash', '-topmost', True, '-alpha', 0.0)
root.focus_force()
root.update_idletasks()
root.wm_attributes('-alpha', 1)

width = root.winfo_width()
height = root.winfo_height()

root.geometry(f"+{m_pos.root_x - int(width / 2)}+{m_pos.root_y - (height + 20)}")
root.mainloop()