Improve lock-screen

Signed-off-by: Knut Ahlers <knut@ahlers.me>

bin/lock

@@ -1,5 +1,31 @@
 #!/bin/bash
 set -euo pipefail
 
-xset dpms force off
-pgrep i3lock || i3lock -e -f -c 000000
+scrot /tmp/screen.png
+convert /tmp/screen.png -scale 10% -scale 1000% /tmp/screen.png
+
+if [[ -f ${HOME}/.config/screen-lock.png ]]; then
+	# placement x/y
+	px=0
+	py=0
+	# lockscreen image info
+	r=$(file ${HOME}/.config/screen-lock.png | grep -o '[0-9]* x [0-9]*')
+	rx=$(echo $r | cut -d' ' -f 1)
+	ry=$(echo $r | cut -d' ' -f 3)
+
+	sr=$(xrandr --query | grep ' connected' | sed 's/primary //' | cut -f3 -d' ')
+	for res in $sr; do
+		# monitor position/offset
+		srx=$(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))
+
+		convert /tmp/screen.png ${HOME}/.config/screen-lock.png -geometry +$px+$py -composite -matte /tmp/screen.png
+		echo "done"
+	done
+fi
+
+i3lock -e -f -n -i /tmp/screen.png