#!/bin/bash

# Approximate timeout rate in milliseconds (checked every 5 seconds).
timeout="10000"

# Take a screenshot of every screen available:
scrot -m -z /tmp/lock.png
xdpyinfo -ext XINERAMA | sed '/^  head #/!d;s///' |
{
  cmd="convert"
  while IFS=' :x@,' read i w h x y; do
    cmd+=" /tmp/lock.png -paint 1 -swirl 360 -crop ${w}x$h+$x+$y -geometry ${w}x$h+$x+$y ~/.config/i3/lock.png -gravity center -composite -matte"
  done
  cmd+=" /tmp/screen.png"

  eval $cmd
}

# Pause music (mocp and mpd):
mocp -P
mpc pause

# Lock it up!
i3lock -e -f -c 000000 -i /tmp/screen.png

# If still locked after $timeout milliseconds, turn off screen.
while [[ $(pgrep -x i3lock) ]]; do
  [[ $timeout -lt $(xssstate -i) ]] && xset dpms force off
  sleep 5
done