beamer

#! /bin/bash

# 2015 Marc Groenewegen
#
# Empirical configure script for projectors
# It works for me, hopefully it will also help others

# xrandr -s 0 ---> reset to defaults
# xrandr -s <resolution>

# LVDS is Macbook display
# DP is Display Port (Macbook)

# Dell XPS
# eDP-1 is laptop
# DP-1 is HDMI

if [ $# -gt 0 ] && [ $1 == "-h" ]; then
  echo "-f : forced (forces DP1 to default mode that always works)"
  echo "-o : off"
  echo "-s : screen (custom)"
  exit
fi



# Forced: Macbook Display Port (DP), works everywhere
# N.B.: for other options just modify the script
if [ $# -gt 0 ] && [ $1 == "-f" ]; then
  if [ $# -gt 1 ]; then
    echo "--FORCED with resolution $2--"
    xrandr --addmode DP1 $2
    xrandr --output DP1 --mode $2 --right-of LVDS1
  else
  echo "--FORCED--"
    xrandr --addmode DP1 1024x768
    xrandr --output DP1 --mode 1024x768 --same-as LVDS1
    fi
  exit
fi

#
#sudo apt-get install xfonts-100dpi
#
# to fix this error??
# X Error of failed request:  BadName (named color or font does not exist)


# 1280x1024 custom
if [ $# -gt 0 ] && [ $1 == "1280" ]; then
  echo "--FORCED 1280x1024--"
  # cvt 1280 1024
  xrandr --newmode "1280" 109.00  1280 1368 1496 1712  1024 1027 1034 1063 -hsync +vsync
  xrandr --addmode DP1 1280
  xrandr --output DP1 --mode 1280
  xrandr --output DP1 --right-of LVDS1
  #xrandr --output DP1 --same-as LVDS1
  #xrandr --delmode DP1 1131 # detach mode from output
  #xrandr --rmmode 1131 # get rid of this mode
  exit
fi


# Screen: custom mode
if [ $# -gt 0 ] && [ $1 == "-s" ]; then
  echo "--Screen--"
  xrandr --output DP-1 --mode 1280x1024
  sleep 4
  xrandr --output DP-1 --mode 1680x1050
  sleep 4
  xrandr --output DP-1 --right-of LVDS1
  exit
fi

# Off: switch off DP1 and HDMI1
if [ $# -gt 0 ] && [ $1 == "-o" ]; then
  echo "--OFF--"
  xrandr --output HDMI1 --off
  xrandr --output DP1 --off
  exit
fi

# Mirror
if [ $# -gt 0 ] && [ $1 == "-m" ]; then
  echo "--MIRROR--"
  PLACEMENT="--same-as"
else
  PLACEMENT="--right-of"
fi

#
# The more flexible solution: let the script search for connected devices
# and offer a list to choose from. NB: if this fails to come up with
# devices use the 'forced' option (see above)
#

NAMES=`xrandr | grep -w connected | awk 'BEGIN {FS=" "} {print $1}'`

# array of output names, start with empty string to fill index 0
OUTPUT=("" ${NAMES})

# show the names with their indexes
echo "Connected outputs"
INDEX=1
for O in ${OUTPUT[*]}; do
  echo "$INDEX : $O"
  (( INDEX = INDEX + 1 ))
done

((NROFOUTPUTS = INDEX - 1))


echo "Where's the projector?"
read INDEX

if [ $INDEX -gt $NROFOUTPUTS ]; then
  echo "Index too large"
  exit
fi

echo "Where's the main screen?"
read MAIN

if [ $MAIN -gt $NROFOUTPUTS ]; then
  echo "Index too large"
  exit
fi

# Ad-hoc
xrandr --output ${OUTPUT[$INDEX]} --mode 1024x768
sleep 4
xrandr --output ${OUTPUT[$INDEX]} --mode 1280x1024
#xrandr --output ${OUTPUT[$INDEX]} --mode 1920x1080
sleep 4
echo xrandr --output ${OUTPUT[$INDEX]} ${PLACEMENT} ${OUTPUT[$MAIN]}
xrandr --output ${OUTPUT[$INDEX]} ${PLACEMENT} ${OUTPUT[$MAIN]}

# to switch projector off:
#echo xrandr --output ${OUTPUT[$INDEX]} --off