adjust

#!/bin/sh
#
# adjust

usage() {
    base="$(basename "$0")"

    cat >&2 << EOF
Usage:
    $ $base -u | up $PFW    : Move $JUMP pixels up.
    $ $base -l | left $PFW  : Move $JUMP pixels left.
    $ $base -d | down $PFW  : Move $JUMP pixels down.
    $ $base -r | right $PFW : Move $JUMP pixels right.
EOF

    [  $# -eq 0 ] || exit "$1"
}

main() {
    . fwmrc
    wmenv

    widCheck "$2" && wid="$2" || wid=$PFW

    case "$1" in
        -u|--up|up)       wmv 0 -$JUMP "$wid" ;;
        -d|--down|down)   wmv 0 +$JUMP "$wid" ;;
        -l|--left|left)   wmv -$JUMP 0 "$wid" ;;
        -r|--right|right) wmv +$JUMP 0 "$wid" ;;
        -h|--help|help)   usage 0             ;;
        *)                usage 1             ;;
    esac

    # move mouse to middle of window
    wmp -a $(($(wattr x "$wid") + $(wattr w "$wid") / 2 + BW)) \
           $(($(wattr y "$wid") + $(wattr h "$wid") / 2 + BW))
}

main "$@"