old_stripped script

#!/usr/bin/env bash

# settings
TOP_MARGIN=0
BOTTOM_MARGIN=35
LEFT_MARGIN=0
RIGHT_MARGIN=0
TITLE_BAR_HEIGHT=17

#either set these in a file or calculate them from the screen properties
MASTER_WIDTH=1344
MASTER_HEIGHT=400
#set the number of rows we want for the grid mode
NUMBER_OF_ROWS=2
#looks nice :)
USELESS_GAPS=0

display_info="$(xwininfo -root)"
#get the desktop parameters
HEIGHT=`grep 'Height:' <<< "$display_info" | awk '{print $2}'`
WIDTH=`grep 'Width:'   <<< "$display_info" | awk '{print $2}'`

#get the current desktop
CURR_DESK=`wmctrl -d | grep '* DG:'| awk '{print $1}'`

#get the total number of windows.
windows_info="$(wmctrl -lx)"
#NOTE: we are not directly using grep to get the windows from the current desktop as it may serve up some false positives
TOTAL_WINDOWS=`wc -l <<< "$windows_info"`
#counter
#Assume that there are no windows in the current desktop
WINDOWS_IN_DESK=0
while IFS= read -r CURR_LINE
do
    WIN_DESK=`echo $CURR_LINE | awk '{print $2}'`
    if  [ $WIN_DESK  -eq  $CURR_DESK ] ; then
        WIN_XID[$WINDOWS_IN_DESK]=`echo $CURR_LINE | awk '{print $1}'`
        MAP_STATE=`xwininfo -id ${WIN_XID[$WINDOWS_IN_DESK]} | grep "Map State:" | awk '{print $3}'`
        if [ "$MAP_STATE"  ==  "IsViewable" ]; then
            WINDOWS_IN_DESK=$((WINDOWS_IN_DESK+1))
        fi
    fi
done <<< "$windows_info"

#find the number of windows in the top row and in each subsequent row except for the bottom row.
NORMAL_ROW_WINDOWS=$((WINDOWS_IN_DESK/NUMBER_OF_ROWS))
#the bottom row ould have as many windows as the top row and any left over
BOTTOM_ROW_WINDOWS=$((NORMAL_ROW_WINDOWS + WINDOWS_IN_DESK%NUMBER_OF_ROWS))
WINDOWS_NOT_IN_BOTTOM_ROW=$((WINDOWS_IN_DESK-BOTTOM_ROW_WINDOWS))
#set the co-ordinates for the top row
X=$LEFT_MARGIN
Y=$TOP_MARGIN
#the height of each window would remain the same regardless of which row it is in
H=$(((HEIGHT-TOP_MARGIN-BOTTOM_MARGIN)/NUMBER_OF_ROWS - TITLE_BAR_HEIGHT))
#Find the width of each window in the top row, this would be the same for each row except for the bottom row which may contain more windows
NORMAL_ROW_WIDTH=$((((WIDTH-LEFT_MARGIN-RIGHT_MARGIN)/NORMAL_ROW_WINDOWS)-USELESS_GAPS*NORMAL_ROW_WINDOWS))
BOTTOM_ROW_WIDTH=$((((WIDTH-LEFT_MARGIN-RIGHT_MARGIN)/BOTTOM_ROW_WINDOWS)-USELESS_GAPS*NORMAL_ROW_WINDOWS))
#we havent processed any windows yet
CURRENT_ROW_WINDOWS=0
#we will be processing the 1st row
CURRENT_ROW=1
for((i=0; i < $WINDOWS_IN_DESK; i++))
do
    if  [[ "$CURRENT_ROW" -lt "$NUMBER_OF_ROWS" ]]; then
        if [[ "$CURRENT_ROW_WINDOWS" -eq "NORMAL_ROW_WINDOWS " ]]; then
            CURRENT_ROW=$((CURRENT_ROW+1))
            if [[ "$CURRENT_ROW" -eq "$NUMBER_OF_ROWS" ]] ; then
                X=$LEFT_MARGIN
                Y=$((Y+H+TITLE_BAR_HEIGHT+USELESS_GAPS))
                W=$BOTTOM_ROW_WIDTH
            else
                CURRENT_ROW_WINDOWS=0
            fi
        fi
        if [[ "$CURRENT_ROW_WINDOWS" -eq "0" ]] ; then
            X=$LEFT_MARGIN
            W=$NORMAL_ROW_WIDTH
            if [[ "$CURRENT_ROW" -ne "1" ]]; then
                Y=$((Y+H+TITLE_BAR_HEIGHT+USELESS_GAPS))
            fi
        fi
    fi
  echo wmctrl  -i  -r ${WIN_XID[$i]} -e "0,$X,$Y,$W,$H"
  X=$((X+W+USELESS_GAPS))
  CURRENT_ROW_WINDOWS=$((CURRENT_ROW_WINDOWS+1))
done