Add a film mode to pause notifications and autolock

.config/i3/config_common

@@ -94,6 +94,9 @@ bindsym $mod+Print exec ~/.config/i3/scripts/screenshot.py -s
 # screenshot and upload to Lychee
 bindsym Print exec ~/.config/i3/scripts/screenshot.py -u
 
+# toggle film mode
+bindsym $mod+Shift+f exec ~/.config/i3/scripts/film_mode.sh
+
 ##################################
 # BINDINGS FOR STANDARD OPERATIONS
 ##################################

.config/i3/scripts/film_mode.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+ON=on
+OFF=off
+
+function usage() {
+	echo "$0: turn on or off the film mode, i.e. killall disturbing apps, autolock and notification daemon"
+	echo "usage: $0 [on|off]"
+  echo "if no argument is specified, try to guess whether film mode is on or off and toggle"
+	exit 0
+}
+
+function on() {
+  killall xautolock
+  xset dpms 0
+  # expire before pausing dunst so the notification does not show up at resume
+  notify-send -i "vlc" -t "1900" -u "normal" -a "Film Mode" "On !"
+  sleep 2
+  # pause dunst, continue receive notification
+  killall -SIGUSR1 dunst
+}
+
+function off() {
+  # resume dunst, show all dangling notifications
+  killall -SIGUSR2 dunst
+  xautolock -time 9 -locker ~/.config/i3/lock/lock.sh &
+  xset dpms 600
+  notify-send -i "vlc" -t "1900" -u "normal" -a "Film Mode" "Off !"
+}
+
+if [ "${1}" == "${ON}" ]; then
+  on
+elif [ "${1}" == "${ON}" ]; then
+  off
+else
+  pgrep xautolock &>/dev/null
+  if [ $? == "0" ]; then
+    on
+  else
+    off
+  fi
+fi