ActivateWindows

#!/bin/python3
import cairo

import gi

import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning) # genius fix

gi.require_version('Gtk', '3.0')
gi.require_version('Gdk', '3.0')

from gi.repository import Gtk, Gdk

root = Gdk.get_default_root_window()
screen = root.get_screen()

def get_screen_size(display):
	mon_geoms = [
		display.get_monitor(i).get_geometry()
		for i in range(display.get_n_monitors())
	]

	x0 = min(r.x            for r in mon_geoms)
	y0 = min(r.y            for r in mon_geoms)
	x1 = max(r.x + r.width  for r in mon_geoms)
	y1 = max(r.y + r.height for r in mon_geoms)

	return x1 - x0, y1 - y0

class ActivateWindows (Gtk.Window):
	def __init__(self):
		super().__init__(type=Gtk.WindowType.POPUP)
		try: # in case it gets removed
			self.set_wmclass("ActivateWindows", "ActivateWindows");
		except:
			pass;
		
		self.set_app_paintable(True);
		screen = self.get_screen();
		visual = screen.get_rgba_visual();
		self.set_visual(visual);
		self.show_all();
		
		width, height = get_screen_size(Gdk.Display.get_default())
		SELF_WIDTH = 350
		SELF_HEIGHT = 100
		self.resize(SELF_WIDTH, 100);
		self.move(width - (SELF_WIDTH + 15), height - (SELF_HEIGHT + 15));
		
		self.set_decorated(False);
		self.set_skip_taskbar_hint(True)
		self.set_skip_pager_hint(True)
		self.set_keep_above(True)
		self.set_type_hint(Gdk.WindowTypeHint.NOTIFICATION)
		
		self.set_accept_focus(False)
		self.set_focus_on_map(False)
		self.input_shape_combine_region(cairo.Region())
		
		self.connect('draw', self._on_draw)
	def _on_draw(self, _wid, ctx):
		ctx.save()
		
		ctx.set_source_rgba(166, 166, 166, 0.6);
		ctx.select_font_face("Segoe UI",
			cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL);
		ctx.set_font_size(26);
		ctx.move_to(0, 50 - 26 / 2);
		ctx.show_text("Activate Windows");
		ctx.set_font_size(18);
		ctx.move_to(0, 50 + 26 / 2);
		ctx.show_text("Go to PC settings to activate Windows.");
		
		ctx.restore()

def main():
	win = ActivateWindows();
	win.connect("destroy", Gtk.main_quit);
	win.set_title("ActivateWindows")
	win.show_all()

	Gtk.main()

if __name__=="__main__":
	try:
		main()
	except KeyboardInterrupt:
		exit(0)
else:
	print("This program is not meant to be imported to other Python modules. Please run ActivateWindows as a standalone script!")