resolution

#!/bin/zsh
# 
# Screen Resize
# 
# Only works on my notebook, since absolutely everything
# is hardcoded...
# 

SCRIPT_NAME="$(basename $0)"
SCRIPT_VERSION="0.20220228"

source $(dirname $0)/_base.inc.sh

SCREENLAYOUTS_LOCATION="$HOME/.screenlayout"

usage(){
	echo "Usage:"
	echo "\t$SCRIPT_NAME [resolution|options]"
	echo
	echo "OPTIONS"
	echo "\t--list,    -l   List available resolutions"
	echo "\t--help,    -h   Display this help text"
	echo "\t--version, -V   Show version of resolution"
	echo
	echo "\tIf no resolution is given, you get a nice fancy dialog with"
	echo "\ta list of resolutions to choose from."
	echo
	echo "SCREENLAYOUTS"
	echo "\tA screen layout is just an shell script in ~/.screenlayout"
	echo "\twhich calls xrandr. Arandr[1] exports screen layouts like this,"
	echo "\tand allows arranging multiple screens via mouse."
	echo 
}

if [[ -z $DISPLAY ]]; then
	message_error "\$DISPLAY not set!"
	exit 2
fi

if [[ $# -eq 0 ]]; then
	res=$(find $SCREENLAYOUTS_LOCATION -type f -executable -exec basename '{}' \; \
		| sort \
		| sed 's|\.sh$||' \
		| zenity --list \
			--title  "Screen Layout" \
			--column "Name" \
			--width  350 \
			--height 350 \
			--text   "Please choose a screen layout from the list:")
	if [[ $? -eq 1 ]]; then
		# User clicked on abort
		message_debug "The user clicked [Abort] on the zenity dialog. Doing nothing."
		exit 0
	fi
	
elif [[ $1 == "-l" || $1 == "--list" ]]; then
	#echo "Available layouts:"
	message "Available layouts:"
	find $SCREENLAYOUTS_LOCATION -type f -executable -exec basename '{}' \; \
		| sort \
		| sed 's|\.sh$||'
	exit 0
	
elif [[ $1 == "-h" || $1 == "--help" ]]; then
	usage
	exit 0
	
elif [[ ${1:0:1} == "-" ]]; then
	message_error "Invalid option: $1"
	usage >&2
	exit 1
	
else
	res=$1
	
fi

message_debug "res=\"$res\""

if [[ -x "$SCREENLAYOUTS_LOCATION/$res.sh" ]]; then
	env "$SCREENLAYOUTS_LOCATION/$res.sh"
	
else
	# Invalid screen layout
	message_error "Invalid layout \"$res\": File not found or nmissing executable bit"
	exit 2
	
fi