#!/bin/bash
lines=$(dialog --stdout --print-maxsize|tr -d " "|sed -e "s/.*://"|cut -d\, -f1)
if [ $? = 1 ];then lines=20;fi
columns=$(dialog --stdout --print-maxsize|tr -d " "|sed -e "s/.*://"|cut -d\, -f2)
if [ $? = 1 ];then columns=60;fi
changesize () {
 line1=$(xrandr|grep -n " connected"|grep ":$display "|cut -d: -f1)
 line2=$(xrandr|grep -n "connected"|grep -A1 ":$display "|tail -n1|cut -d: -f1)
 if [ "$line1" = "$line2" ];then
  line2=$(xrandr|wc -l)
 else
  line2=$(expr $line2 - 1)
 fi
 sizes=$(xrandr|sed -n -e "$(expr $line1 + 1),${line2}p"|tr -s " "|cut -d " " -f2)
 mes2=""
 for a in $sizes;do
  mes2="$mes2 $a $a"
 done
 size=$(dialog --stdout --no-shadow --menu "Select resolution of the screen $display" $lines $columns $(echo $sizes|tr " " '\n'|wc -l) $mes2)
 if [ $? = 1 ];then echo "You selected cancel";exit 0;fi
 xrandr --output $display --mode $size
}
location () {
 mes2="same-as same above above below below left-of left right-of right"
 location=$(dialog --stdout --no-shadow --menu "Where do you want to place $display relative to the former $displayold" $lines $columns 5 $mes2)
 if [ $? = 1 ];then echo "You selected cancel";exit 0;fi
 xrandr --output $display --$location $displayold
}
displaysall="$(xrandr|grep " connected")"
i=0
while [ $(echo "$displaysall"|wc -l) -gt 1 ];do
 if [ $i -gt 0 ];then mes1="next";else mes1="the first";fi
 mes2=""
 displays=$(echo "$displaysall"|cut -d " " -f1)
 for a in $displays;do
  mes2="$mes2 $a $(echo "$displaysall"|grep "$a "|cut -d " " -f2-|tr " " "_")"
 done
 display=$(dialog --no-shadow --stdout --menu "Select $mes1 screen to be configured" $lines $columns $(echo "$displaysall"|wc -l) $mes2)
 if [ $? = 1 ];then echo "You selected cancel";exit 0;fi
 changesize
 if [ $i -gt 0 ];then
  location 
 fi
 displaysall="$(echo "$displaysall"|grep -v "$display ")"
 i=$(expr $i + 1)
 displayold=$display
done
display=$(echo "$displaysall"|cut -d " " -f1)
changesize
if [ $i -gt 0 ];then
 location 
fi