i3: replace i3lock with lightdm

.config/i3/config

@@ -187,7 +187,7 @@ bindsym XF86MonBrightnessDown   exec xbacklight -dec 5 && pkill -RTMIN+12 i3bloc
 exec --no-startup-id ~/.config/i3/disable-standby-fs.py
 exec --no-startup-id "ip monitor | while read; do pkill -RTMIN+15 i3blocks; done"
 exec --no-startup-id feh --no-fehbg --no-xinerama --bg-fill ~/pictures/lakesidesunrise.jpg
-exec --no-startup-id xautolock -time 5 -locker ~/.config/i3/lock.sh -nocloseout -nocloseerr
+exec --no-startup-id xautolock -time 5 -locker 'dm-tool lock' -nocloseout -nocloseerr
 
 # startup programs
 exec --no-startup-id pulseaudio

.config/i3/lock.sh

@@ -1,40 +0,0 @@
-#!/usr/bin/env bash
-
-icon="$HOME/.config/i3/lock.png"
-tmpbg='/tmp/screen.png'
-
-(( $# )) && { icon=$1; }
-
-PX=0
-PY=0
-# lockscreen image info
-R=$(file $icon | grep -o '[0-9]* x [0-9]*')
-RX=$(echo $R | cut -d' ' -f 1)
-RY=$(echo $R | cut -d' ' -f 3)
-
-RES=$(xrandr --query | grep ' connected primary' | cut -f4 -d' ')
-
-# monitor position/offset
-SRX=$(echo $RES | cut -d'x' -f 1)                   # x pos
-SRY=$(echo $RES | cut -d'x' -f 2 | cut -d'+' -f 1)  # y pos
-SROX=$(echo $RES | cut -d'x' -f 2 | cut -d'+' -f 2) # x offset
-SROY=$(echo $RES | cut -d'x' -f 2 | cut -d'+' -f 3) # y offset
-PX=$(($SROX + $SRX/2 - $RX/2))
-PY=$(($SROY + $SRY/2 - $RY/2))
-
-# screenshot, pixelise and overlay
-maim | convert - -scale 5% -scale 2000% $icon -geometry +$PX+$PY -composite -matte $tmpbg
-
-if command mpc 2>&1 1>/dev/null; then
-    playing=$(mpc status | grep playing | wc -l)
-    [[ $playing == 1 ]] && mpc pause
-fi
-
-i3lock -i "$tmpbg" -n -e
-
-if command mpc 2>&1 1>/dev/null; then
-    [[ $playing == 1 ]] && mpc play
-fi
-
-
-rm "$tmpbg"