tile

#!/bin/sh
#
# z3bra - 2014 (c) wtfpl
# edited by lazr 2016
# arrange windows in a tiled pattern

# Filter the windows if they are in the given display
windows_in_disp () {
    while read -r window; do
        if [[ $(ind $window) == $DISP ]]; then
            echo $window
        fi
    done
}

# default values for gaps and master area
PANEL=${PANEL:-0}
GAP=${GAP:-5}
MASTER=${MASTER:-900}

# get current window id and its borderwidth
PFW=$(pfw)
BW=$(wattr b $PFW)

DISP=$(ind $(pfw))
SW=$(dattr -w $DISP)
SH=$(dattr -h $DISP)
SX=$(dattr -x $DISP)
SY=$(dattr -y $DISP)

# get the number of windows to put in the stacking area


MAX=$(lsw | windows_in_disp | wc -l)
MAX=$((MAX - 1))

# calculate usable screen size (without borders and gaps)
SW=$((SW - GAP - 2*BW))
SH=$((SH - GAP - 2*BW - PANEL))

X=$((SX + GAP))
Y=$((SY + GAP + PANEL))
W=$((MASTER - GAP - 2*BW))
H=$((SH - GAP))
# put current window in master area
wtp $X $Y $W $H $PFW

# and now, stack up all remaining windows on the right
X=$((SX + MASTER + GAP))
W=$((SW - MASTER - GAP))
H=$((SH / MAX - GAP - 2*BW))

for wid in $(lsw | windows_in_disp | grep -v $PFW); do
    wtp $X $Y $W $H $wid
    Y=$((Y + H + GAP + 2*BW))
done