lock.sh

#!/usr/bin/bash

# Author : Pavan Jadhaw
# Github Profile : https://github.com/pavanjadhaw
# Project Repository : https://github.com/pavanjadhaw/betterlockscreen

# ratio for rectangle to be drawn for time background on lockscreen
# Original Image
orig_wall=$HOME/.wall.png

# create folder in /tmp directory
folder="/tmp/lock"

# Versions (from here)
# You can use these images to set different versions as wallpaper
# lockscreen background.
resized="$folder/resized.png" # resized image for your resolution

# images to be used as wallpaper
dim="$folder/dim.png" # image with subtle overlay of black
blur="$folder/blur.png" # blurred version
dimblur="$folder/dimblur.png"

# lockscreen images (images to be used as lockscreen background)
l_resized="$folder/l_resized.png"
l_dim="$folder/l_dim.png"
l_blur="$folder/l_blur.png"
l_dimblur="$folder/l_dimblur.png"


prelock() {
	pkill -u "$USER" -USR1 dunst
}

lock() {
	#$1 image path
	letterEnteredColor=d23c3dff
	letterRemovedColor=d23c3dff
	passwordCorrect=00000000
	passwordIncorrect=d23c3dff
	background=00000000
	foreground=ffffffff
	i3lock \
		-n -i "$1" \
		--timepos="x-90:h-ch+30" \
		--datepos="tx+24:ty+25" \
		--clock --datestr "Type password to unlock..." \
		--insidecolor=$background --ringcolor=$foreground --line-uses-inside \
		--keyhlcolor=$letterEnteredColor --bshlcolor=$letterRemovedColor --separatorcolor=$background \
		--insidevercolor=$passwordCorrect --insidewrongcolor=$passwordIncorrect \
		--ringvercolor=$foreground --ringwrongcolor=$foreground --indpos="x+280:h-70" \
		--radius=20 --ring-width=4 --veriftext="" --wrongtext="" \
		--textcolor="$foreground" --timecolor="$foreground" --datecolor="$foreground"
}

postlock() {
	pkill -u "$USER" -USR2 dunst
}


# Options
case "$1" in
	"")
		if [ ! -f $l_dim ]; then
			echo "Important : Update the image cache, Ex. ./lock.sh -g path/to/image.jpg"
			echo
			echo "See also : For other set of options and help use help command."
			echo "Ex. ./lock.sh -h or ./lock.sh --help"
			echo
			echo "See : https://github.com/pavanjadhaw/betterlockscreen for addition info..."
			exit 1
		else
			echo
			echo "Seems you havent provided any argument, see below for usage info"
			echo
			echo "See also : For other set of options and help use help command."
			echo "Ex. ./lock.sh -h or ./lock.sh --help"
			echo
			echo "See : https://github.com/pavanjadhaw/betterlockscreen for addition info..."
			echo
			exit 1
		fi
		;;

	-h | --help)
		echo "Important : Update the image cache, Ex: ./lock.sh -g path/to/image.jpg"
		echo
		echo
		echo "See : https://github.com/pavanjadhaw/betterlockscreen for additional info..."
		echo
		echo
		echo "Options:"
		echo
		echo "          -h --help"
		echo "              For help. Ex: ./lock.sh -h or ./lock.sh --help"
		echo
		echo
		echo "          -u --update"
		echo "              to update image cache, you should do this before using any other options"
		echo "              Ex: ./lock.sh -u path/to/image.png when image.png is custom background"
		echo
		echo
		echo "          -l --lock"
		echo "              to lock screen, Ex. ./lock.sh -l"
		echo "              you can also use dimmed or blurred background for lockscreen"
		echo "              Ex: ./lock.sh -l dim (for dimmed background)"
		echo "              Ex: ./lock.sh -l blur (for blurred background)"
		echo "              Ex: ./lock.sh -l dimblur (for dimmed + blurred background)"
		echo
		echo
		echo "          -w --wall"
		echo "              you can also set lockscreen background as wallpaper"
		echo "              to set wallpaper. Ex ./lock.sh -w or ./lock.sh --wall"
		echo "              you can also use dimmed or blurred variants"
		echo "              Ex: ./lock.sh -w dim (for dimmed wallpaper)"
		echo "              Ex: ./lock.sh -w blur (for blurred wallpaper)"
		echo "              Ex: ./lock.sh -w dimblur (for dimmed + blurred wallpaper)"
		echo
		;;

	-l | --lock)
		case "$2" in
			"")
				# default lockscreen
				prelock
				playerctl pause > /dev/null 2>&1
				lock "$l_resized"
				postlock
				;;

			dim)
				# lockscreen with dimmed background
				prelock
				lock "$l_dim"
				postlock
				;;

			blur)
				# set lockscreen with blurred background
				prelock
				lock "$l_blur"
				postlock
				;;

			dimblur)
				# set lockscreen with dimmed + blurred background
				prelock
				lock "$l_dimblur"
				postlock
				;;
		esac
		;;

	-w | --wall)
		case "$2" in
			"")
				# set resized image as wallpaper if no argument is supplied by user
				feh --bg-fill $resized
				;;

			dim)
				# set dimmed image as wallpaper
				feh --bg-fill $dim
				;;

			blur)
				# set blurred image as wallpaper
				feh --bg-fill $blur
				;;

			dimblur)
				# set dimmed + blurred image as wallpaper
				feh --bg-fill $dimblur
				;;
		esac

		;;

	-u | --update)
		rectangles=" "
		SR=$(xrandr --query | grep ' connected' | grep -o '[0-9][0-9]*x[0-9][0-9]*[^ ]*')
		for RES in $SR; do
			SRA=(${RES//[x+]/ })
			CX=$((${SRA[2]} + 25))
			CY=$((${SRA[1]} - 30))
			rectangles+="rectangle $CX,$CY $((CX+300)),$((CY-80)) "
		done

		# User supplied Image
		user_image="$folder/user_image.png"

		# find your resolution so images can be resized to match your screen resolution
		y_res=$(xdpyinfo | grep dimensions | sed -r 's/^[^0-9]*([0-9]+x[0-9]+).*$/\1/')

		# create folder
		if ! [[ -d $folder ]]; then
			mkdir -p "$folder"
		fi

		# get user image
		cp "$2" "$user_image"
		if [ ! -f $user_image ]; then
			echo "Please specify the path to the image you would like to use"
			exit 1
		fi

		# replace orignal with user image
		cp "$user_image" "$orig_wall"
		rm "$user_image"

		echo "Generating alternate images based on the image you specified,"
		echo "please wait this might take few seconds..."

		# wallpapers

		echo
		echo "Converting provided image to match your resolution..."
		# resize image
		convert "$orig_wall" -resize "$y_res""^" -gravity center -extent "$y_res" "$resized"

		echo
		echo "Applying dim and blur effect to resized image"
		# dim
		convert "$resized" -fill black -colorize 40% "$dim"

		# blur
		convert "$resized" -blur 0x5 "$blur"

		# dimblur
		convert "$dim" -blur 0x5 "$dimblur"

		# lockscreen backgrounds

		echo
		echo "caching images for faster screen locking"
		# resized
		convert "$resized" -draw "fill black fill-opacity 0.4 $rectangles" "$l_resized"

		# dim
		convert "$dim" -draw "fill black fill-opacity 0.4 $rectangles" "$l_dim"

		# blur
		convert "$blur" -draw "fill black fill-opacity 0.4 $rectangles" "$l_blur"

		# blur
		convert "$dimblur" -draw "fill black fill-opacity 0.4 $rectangles" "$l_dimblur"

		echo
		echo "All required changes have been applied"
		;;
esac