#!/bin/ksh
#
# Copyright (c) 2020 Uwe Werler <uwe@werler.is>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# 
# This is a small script to set my monitors when plugged into the docking
# station. It starts from left to right in the order of detection. It can be
# used in cwm with e.g.:
#
# bind-key C4-r   '/home/uwerler/bin/screen.sh'
# bind-key C4-R   '/home/uwerler/bin/screen.sh --off'
#

[[ -n ${1} ]] && _eDP="--off"

xrandr --verbose | { while read _line; do

    case $_line in
      *\ connected*)
      set -A CDEVS ${CDEVS[@]} ${_line%% connected*}
      ;;
      *\ disconnected*)
      set -A DDEVS ${DDEVS[@]} ${_line%% disconnected*}
      ;;
    esac

  done

  _pos=0
  _prim="--primary"

  for _dev in ${CDEVS[*]}; do

    if [[ ${#CDEVS[*]} -gt 1 ]]; then

      case ${_dev} in

        eDP*) if [[ ${_eDP} == "--off" ]]; then

                set -A XRANDR -- "--output ${_dev} ${_eDP}"

              else

                set -A XRANDR -- "--output ${_dev} --mode 1920x1080 --pos $(( (${#CDEVS[*]}-1)*1920 ))x0 --rotate normal"
              fi

              ;;

          *)  set -A XRANDR -- "${XRANDR[@]} --output ${_dev} ${_prim} --mode 1920x1080 --pos ${_pos}x0 --rotate normal"
              (( _pos += 1920 ))
              unset _prim
              ;;
      esac

    else

      set -A XRANDR -- "${XRANDR[@]} --output ${_dev} --primary --mode 1920x1080 --pos 0x0 --rotate normal"
    fi

  done

  for _dev in ${DDEVS[*]}; do

    set -A XRANDR -- "${XRANDR[@]} --output ${_dev} --off"
  done

  xrandr ${XRANDR[@]}
}

#vim: set ai:ts=2:et:sw=2