[i3] Updates i3 lock screen.

- Now with transparency
- Slightly slow

i3lock.sh

@@ -1,6 +1,34 @@
 #!/bin/bash
+cd ~/projects/scripts
 xset -b #disable scrot beep
-scrot /tmp/screen.png
-mogrify -scale 10% -scale 1000% /tmp/screen.png
-[[ -f /home/user/images/icons/lock-icon.png ]] && convert /tmp/screen.png /home/user/images/icons/lock-icon-1.png -gravity center -composite -matte /tmp/screen.png
-i3lock -e -u -i /tmp/screen.png
+#!/bin/bash
+
+# Dependencies: imagemagick, i3lock-color-git, scrot
+
+IMAGE=$(mktemp).png
+TEXT="Type password to unlock"
+
+VALUE="60" #brightness value to compare to
+scrot $IMAGE
+COLOR=`convert $IMAGE -colorspace hsb -resize 1x1 txt:- | sed -E '/.*$/ {
+                             N
+                             s/.*\n.*([0-9]{1,2}[^\.])\.[0-9]+%\)$/\1/
+                             }'`;
+# pixelate: -scale 10% -scale 1000%
+if [ "$COLOR" -gt "$VALUE" ]; then #white background image and black text
+    convert $IMAGE -level 0%,100%,0.6 -filter Gaussian -resize 20% -define filter:sigma=1.5 -resize 500% -font Liberation-Sans -pointsize 26 -fill black -gravity center -annotate +0+160 "$TEXT" - | composite -gravity center lockdark.png - $IMAGE
+    PARAM='--textcolor=00000000 --insidecolor=0000001c --ringcolor=0000003e --linecolor=00000000 --keyhlcolor=ffffff80 --ringvercolor=ffffff00 --insidevercolor=ffffff1c --ringwrongcolor=ffffff55 --insidewrongcolor=ffffff1c'
+else #black
+    convert $IMAGE -level 0%,100%,0.6 -filter Gaussian -resize 20% -define filter:sigma=1.5 -resize 500% -font Liberation-Sans -pointsize 26 -fill white -gravity center -annotate +0+160 "$TEXT" - | composite -gravity center lock.png - $IMAGE
+    PARAM='--textcolor=ffffff00 --insidecolor=ffffff1c --ringcolor=ffffff3e --linecolor=ffffff00 --keyhlcolor=00000080 --ringvercolor=00000000 --insidevercolor=0000001c --ringwrongcolor=00000055 --insidewrongcolor=0000001c'
+fi
+
+# try to use a forked version of i3lock with prepared parameters
+i3lock $PARAM -i $IMAGE > /dev/null 2>&1
+
+if [ $? -ne 0 ]; then
+    # We have failed, lets get back to stock one
+    i3lock -i $IMAGE
+fi
+
+rm $IMAGE