Screen Rotation Script for Tablet PC (X220T)

sroller.bash

#!/bin/bash
#
# Screen Rotation Script for Tablet PC (X220T)
#
# Usage:
#   `rotator`               - rotate screen clockwise to next orientation
#   `rotator <orientation>` - rotate screen to orientation
#   `<orientation>` can be
#     xrandr style    : normal,right,inverted,left
#     xsetwacom style : none,cw,half,ccw
#     plain number    : 0,1,2,3
#

OUTPUT="LVDS1"

function screen_rotate () {
xrandr --output $OUTPUT --rotate $1
xsetwacom list devices | cut -f1 |
while read LINE
do
  xsetwacom set "$LINE" rotate $2
done
}

function resolve_param () {
(
cat                                                     |
grep -A1        "| $1"                                  |
cut --delimiter '|' --output-delimiter ' ' --fields 3,4 |
head -n2
) << EOF
| 0 | normal    | none  |
| 1 | right     | cw    |
| 2 | inverted  | half  |
| 3 | left      | ccw   |
| 0 | normal    | none  | rollback
EOF
}

function current_rotation () {
xrandr -q --verbose      |
grep "$OUTPUT connected" |
sed -E 's@.*\) (normal|right|inverted|left) \(.*@\1@'
}

if [ "$1" != "" ]
then
  PARAM=$(resolve_param $1 | head -n1)
else
  PARAM=$(resolve_param `current_rotation` | tail -n1)
fi

if [ -z "$PARAM" ]
then
  echo "Error: invalid rotation name"
  exit
fi

screen_rotate $PARAM