Minimalistic tiling based on golden ratio

tile.sh

#!/usr/bin/env bash
# minimalistic tiling manager based on golden ratio
# uses only zsh, awk and wmctrl
# Copyleft (C) 2020-2021 by Jaromil
#
# usage: tile [ center | left | right | top ]
#
# geometry of tiles:
# ________________
# |     top      |
# |--+--------+--|
# |  |        |  |
# |l | center | r|
# |__|________|__|
# +---task bar---+
#
# Manual Tweaks
#########################
# config main screen size
IFS='x'
read -a autodetect <<< "`wmctrl -d | awk '/ \* DG:/ { print $4 }'`"
W=${autodetect[0]}
H=${autodetect[1]}
# echo >&2 "desktop geometry: $W x $H"

# override width or height to keep on one monitor if dual screen
# H=2160
# config taskbar height
TH=100
# config border
B=20
B2=$(( $B + $B ))
# use bc to calculate and round
# Calculations
########################
# (%.* modifier is to round floats)
calc() { local res=`echo "$1" | bc`; echo ${res%.*}; }
#
# center width
#cwf=`echo "( $W / 2.5 ) * 1.6" | bc -l`
cw=`calc "( $W / 2.5 ) * 1.6"`
# center x origin
cxo=`calc "( $W - $cw ) / 2"`
# center height
ch=`calc "( $H / 2.5 ) * 1.6"`
# center y origin
cyo=`calc "( $H - $ch ) / 2"`
# echo "$cw x $ch at x$cxo y$cyo"
case "$1" in
    center)
        wmctrl -r :ACTIVE: -e 0,$cxo,$cyo,$cw,$(( $H - $cyo - $TH))
        ;;
    left)
        wmctrl -r :ACTIVE: -e 0,$B,$B,$(( $cxo - $B )),$(( $H - $TH - $B))
        ;;
    right)
        wmctrl -r :ACTIVE: -e 0,$(( $cxo + $cw )),20,$(( $cxo - $B )),$(( $H - $TH - $B ))
        ;;
    top)
        wmctrl -r :ACTIVE: -e 0,$(( $B + $cxo )),0,$(( $W - $cxo - $cxo - $B2 )),$(( $cyo - $B2 ))
esac