rofi interface for xrandr

xrandr-rofi.sh

#!/usr/bin/env bash

set -e

state="$(xrandr)";
outputs="$(awk '{if ($2 == "connected") print $1}' <<< "$state")"

function getModes() {
    awk -v output=$1 '{if ($1 == output) {getline; while ($0 ~ /^\ \ /) {print $1; getline;}}}' <<< "$state"
}

function getMode() {
    echo "$((echo auto; getModes "$1";) | rofi -dmenu -p "Select mode for $1 output")"
}

function getPosition() {
    output="$1"
    relationTo="$2"
    echo "$((echo -e "$output same-as $relationTo\n$output left-of $relationTo\n$output right-of $relationTo\n$output above $relationTo\n$output below $relationTo";) | rofi -dmenu -p "Select $output output relation to $relationTo output")"
}

function permutations() {
    python -c "import sys, itertools; a=sys.argv[1:]; print('\n'.join('\n'.join(' '.join(str(i) for i in c) for c in itertools.permutations(a, i)) for i in range(1, len(a)+1)))" "$@";
}

entries="$(permutations $outputs | rofi -dmenu -p "Select output combination (first one is primary)" | tr ' ' '\n')"

flags=""
primary="$(head -n 1 <<< "$entries")"

if [[ -z "$entries" ]]
then
    echo "No Selection" >&2
    exit 1
fi

for output in $outputs
do
    if echo "$entries" | grep -Eq "^${output}$"
    then
        mode="$(getMode $output)"
        if [ "$mode" == "auto" ] || [ -z "$mode" ]
        then
            modeFlag="--auto"
        else
            modeFlag="--mode $mode"
        fi

        if [ "$primary" == "$output" ]
        then
            flags="$flags --output $output --primary $modeFlag"
        else
            positionFlag="$(getPosition $output $primary | awk '{printf "--"$2" "$3}')"
            flags="$flags --output $output $modeFlag $positionFlag"
        fi
    else
        flags="$flags --output $output --off"
    fi
done

xrandr $flags