Set colorscheme for razer blackwidow 2019 keyboard.

clazer

#!/usr/bin/zsh
if [ $1 = "-h" ]; then

	echo -e "Usage:\n"
	echo -e "\tclazer [mode=mode] [selector=hexadecimal_color]\n"

	echo -e "Options:"
	echo -e "\tmode:\t\tdefault | game"
	echo -e "\tselector:\tfKeys | letters | modK | posK | numK | other\n"

	echo -e "Example:"
	echo -e "\tclazer mode=default letters=FFC0CB numK=00ff00\n"
	echo -e "\tThis makes letters pink and numbers green."
	echo -e "\tThe other keys will keep the predefined colors for the selected mode.\n"

	echo -e "\t(Or, for a sweet, winter colorscheme,"
	echo -e "\ttry: \tclazer modK=ffffff letters=10E0C0 fKeys=00ff80 other=FF0052 posK=ed00ff)"
	exit
fi



# default colors
function defaultColors {
	if [ $1 = "default" ]; then

		fKeys="\xff\xa2\x00"
		letters="\x00\xff\x80"
		modK="\xff\x22\x00"
		posK="\xff\xa2\x00"
		numK="\x00\x80\xff"
		none="\x0\x0\x0"
		other="\xff\xa2\x00"
		
		raw_fKeys="ffa200" # - warm yello - Meta, ESC, Fn keys
		raw_letters="00ff80" # - seafoam green
		raw_modK="ff2200" # - orangish red - Mod keys such as ctrl, used for hjkl in my case
		raw_posK="ffa200" # - same as fKeys - Position keys - home, pos1, page up / down etc.
		raw_numK="0080ff" # - sky blue
		raw_none="000" # empty, absent on razer blackwidow 2019
		raw_other="ffa200" # any other keys - currently not used on my keyboard

	elif [ $1 = "game" ]; then
		fKeys="\xff\xa2\x00"
		letters="\x00\xff\x80"
		modK="\xff\x22\x00"
		posK="\xff\xa2\x00"
		numK="\x00\x80\xff"
		none="\x0\x0\x0"
		other="\xff\xa2\x00"
		
		raw_fKeys="ffa200" # - warm yello - ESC, Fn keys, WASD
		raw_letters="00ff80" # - seafoam green
		raw_modK="ff2200" # - orangish red - Mod keys
		raw_posK="ffa200" # - same as fKeys - Position keys
		raw_numK="0080ff" # - sky blue
		raw_none="000" # Meta
		raw_other="ffa200" # any other keys - currently not used on my keyboard
	else
		echo -e "\nUnknown mode.\n"
		echo -e "\tPossible options: 'game', 'default' (optional).\n"
		echo -e "Example:"

		echo -e "\tmode=game\n"
		exit
	fi
}

function assignColor {
	selector=$1
	color=$2
	raw_color=$3

	case $selector in

		fKeys)
			fKeys="$color"
			raw_fKeys="$raw_color"
			;;
		letters)
			letters="$color"
			raw_letters="$raw_color"
			;;
		modK)
			modK="$color"
			raw_modK="$raw_color"
			;;
		posK)
			posK="$color"
			raw_posK="$raw_color"
			;;
		numK)
			numK="$color"
			raw_numK="$raw_color"
			;;
		other)
			other="$color"
			raw_other="$raw_color"
			;;
		*)

			echo -e "\nUnknown selector.\n"

			echo -e "\tselector=color in hexadecimal format for RGB values. \n"
			echo -e "\tFor example: fKeys=FF0000"
			echo -e "\tThis sets the F1 - F12 keys to red color. \n"
			echo -e "\tAvailable selectors: "
			echo -e "\tfKeys | letters | modK | posK | numK | other"
			exit
			;;
	esac
}

function parseColor {
	# get the color in hex code in format 000000 - for black, FFFFFF - for white
	selector=$1
	color=$2

	# extract red, green and blue hex values
	red="${color:0:2}"
	green="${color:2:2}"
	blue="${color:4:2}"

	# write to the color variable in format \x00\x00\x00 - for black
	color="\\x$red\\x$green\\x$blue"
	rawcolor="$red$green$blue"
	
	# assign color to key
	assignColor $selector $color $rawcolor
}


for matrix_custom_frame in /sys/bus/hid/drivers/razerkbd/*:*:*.*/matrix_custom_frame
do
	# echo $(dirname "$matrix_custom_frame")
	# echo "$matrix_custom_frame"

	if [[ $1 == mode* ]]; then
		mode=$(echo "$1" | grep -oP "(?<==).*")
		shift
	else
		mode="default"
	fi
	# set default colors for mode:
	defaultColors $mode

	while [ "$1" != "" ]; do
		# get the selector part of the parameter, for example fKeys
		selector=$(echo "$1" | grep -oP "(?=.+=)\w*")
		# get the color in hex code in format 000000 - for black, FFFFFF - for white
		color=$(echo "$1" | grep -oP "(?<==).*")

		parseColor $selector $color
		shift
	done

	# output color values just for info
	echo ""
	echo "Setting values:"
	echo "\tfKeys: $raw_fKeys"
	echo "\tletters: $raw_letters"
	echo "\tmodK: $raw_modK"
	echo "\tposK: $raw_posK"
	echo "\tnumK: $raw_numK"
	echo "\tother: $raw_other"

	# push the color values into keyboard memory
	if [ "$mode" = "default" ]; then
		echo -n -e "\x0\x0\x15$none$fKeys$none$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$other$other$other$none$none$none$none" >| $matrix_custom_frame
		echo -n -e "\x1\x0\x15$none$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$posK$posK$posK$numK$numK$numK$numK" >| $matrix_custom_frame
		echo -n -e "\x2\x0\x15$none$modK$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$modK$posK$posK$posK$numK$numK$numK$numK" >| $matrix_custom_frame
		echo -n -e "\x3\x0\x15$none$modK$letters$letters$letters$letters$letters$modK$modK$modK$modK$letters$letters$letters$modK$none$none$none$numK$numK$numK$none" >| $matrix_custom_frame
		echo -n -e "\x4\x0\x15$none$modK$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$none$modK$none$modK$none$numK$numK$numK$numK" >| $matrix_custom_frame
		echo -n -e "\x5\x0\x15$none$modK$fKeys$modK$letters$letters$letters$letters$none$none$modK$letters$fKeys$fKeys$modK$modK$modK$modK$none$numK$numK$none" >| $matrix_custom_frame

	elif [ "$mode" = "game" ]; then
		# Esc + Fn keys
		echo -n -e "\x0\x0\x15$none$fKeys$none$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$fKeys$other$other$other$none$none$none$none" >| $matrix_custom_frame
		# numbers + positional keys
		echo -n -e "\x1\x0\x15$none$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$numK$posK$posK$posK$numK$numK$numK$numK" >| $matrix_custom_frame
		# modK + 'W' + letters
		echo -n -e "\x2\x0\x15$none$modK$letters$fKeys$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$modK$posK$posK$posK$numK$numK$numK$numK" >| $matrix_custom_frame
		# modK + 'ASD' + letters
		echo -n -e "\x3\x0\x15$none$modK$fKeys$fKeys$fKeys$letters$letters$letters$letters$letters$letters$letters$letters$letters$modK$none$none$none$numK$numK$numK$none" >| $matrix_custom_frame
		# modK + letters
		echo -n -e "\x4\x0\x15$none$modK$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$letters$none$modK$none$modK$none$numK$numK$numK$numK" >| $matrix_custom_frame
		# last row
		echo -n -e "\x5\x0\x15$none$modK$none$modK$letters$letters$letters$letters$none$none$modK$letters$fKeys$fKeys$modK$modK$modK$modK$none$numK$numK$none" >| $matrix_custom_frame
	else
		echo "mode $mode not recognized"
	fi

	# apply the custom effect, that is custom colors
	echo "Writing to file: \n\t$(dirname "$matrix_custom_frame")/matrix_effect_custom"
	echo -n "1" > $(dirname "$matrix_custom_frame")/matrix_effect_custom

	# # Uncomment all below to enable Fn keys functionality.
	
	# # kill openrazer-daemon as it prevents usage of fn keys
	# echo -n "Verifying daemon shutdown... "
	# for i in {1..5}
	# do
	# 	if [ "$(pidof openrazer-daemon)" != "" ]
	# 		then
	# 			openrazer-daemon -s
	# 			sleep 2
	# 	else
	# 		break
	# 	fi
	# done
	# echo "done."

done