#! /bin/bash

# desc: adjusts screen brightness via menu + args
# created:: Jul 9th 2012
# updated: Jul 24th 2012.

dir="/sys/class/backlight/intel_backlight"
level=$(cat "$dir/brightness")
max=$(cat "$dir/max_brightness")
div=$(($max/10))
cycle=$(($max/20))

function commit {
   echo $1 > "$dir/brightness"
   echo -e "${cr}Set brightness to ${cy}$1${cr}/$max (${cy}$(($1*100/$max))%${cr}).${c0}"
}

function menu {
   if [ -n "$Err" ]; then
      echo "Invalid selection. [$Sel] Try again."
   fi
   echo
   echo -e "${cr}Screen brightness is ${cy}$level${cr}/$max (${cy}$(($level*100/$max))%${cr}). Options:"
   echo -e "- ${cy}1-10${cr} for 10%-100% brightness"
   echo -e "- ${cy}xvl, vl, l, m, h${cr} for 5%, 10%, 20%, 50%, 100% respectively"
   echo -e "- ${cy}''${cr} to increase by 5% or anything else to decrease by 5%"
   echo -e "- ${cy}e${cr} to exit script${c0}"
   read -p "- Make a selection: " Sel
   switch $Sel
}

function switch {
   case $1 in
   1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10)
      commit $((div*$1))
      ;;
   h)
      commit $max
      ;;
   m)
      commit $(($max/2))
      ;;
   l)
      commit $(($max/5))
      ;;
   vl|l2)
      commit $(($max/10))
      ;;
   xvl|l3)
      commit $(($max/20))
      ;;
#! /bin/bash

# desc: adjusts screen brightness via menu + args
# created:: Jul 9th 2012
# updated: Jul 24th 2012.

dir="/sys/class/backlight/intel_backlight"
level=$(cat "$dir/brightness")
max=$(cat "$dir/max_brightness")
div=$(($max/10))
cycle=$(($max/20))

function commit {
   echo $1 > "$dir/brightness"
   echo -e "${cr}Set brightness to ${cy}$1${cr}/$max (${cy}$(($1*100/$max))%${cr}).${c0}"
}

function menu {
   if [ -n "$Err" ]; then
      echo "Invalid selection. [$Sel] Try again."
   fi
   echo
   echo -e "${cr}Screen brightness is ${cy}$level${cr}/$max (${cy}$(($level*100/$max))%${cr}). Options:"
   echo -e "- ${cy}1-10${cr} for 10%-100% brightness"
   echo -e "- ${cy}xvl, vl, l, m, h${cr} for 5%, 10%, 20%, 50%, 100% respectively"
   echo -e "- ${cy}''${cr} to increase by 5% or anything else to decrease by 5%"
   echo -e "- ${cy}e${cr} to exit script${c0}"
   read -p "- Make a selection: " Sel
   switch $Sel
}

function switch {
   case $1 in
   1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10)
      commit $((div*$1))
      ;;
   h)
      commit $max
      ;;
   m)
      commit $(($max/2))
      ;;
   l)
      commit $(($max/5))
      ;;
   vl|l2)
      commit $(($max/10))
      ;;
   xvl|l3)
      commit $(($max/20))
      ;;