Add screen, stylus and trackpoint rotation script

This script's purpose is to rotate the screen and/or Wacom stylus
and/or trackpoint orientation for more comfortable drawing and writing
on a touch screen. Requires `xrandr` and `xsetwacom` on the system.

Various desktop environments have different levels of automation, so
options `-s`, `-p`, `-t` determine whether to rotate the screen, pen
or trackpoint.

Only the main screen is rotated (LVDS1 or LVDS-1 depending on
kernel). Furthermore the input device rotations follow the main
screen.

_THERE MIGHT BE ISSUES WITH EXTERNAL MONITORS_ Check!

1 files changed, 154 insertions, 0 deletions

diff --git a/resources/utilities/x200t-screen-rotation/rotate.sh b/resources/utilities/x200t-screen-rotation/rotate.sh
new file mode 100755
index 00000000..71a1363b
--- /dev/null
+++ b/resources/utilities/x200t-screen-rotation/rotate.sh
@@ -0,0 +1,154 @@
+#!/usr/bin/env bash
+#
+# rotate.sh: Rotates the screen by 90 degrees counterclockwise and/or
+# gives the Wacom stylus input and/or TrackPoint the same orientation.
+#
+# Copyright (C) 2018  Eemeli Blåsten
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+#
+# Usage: You can run this file with the command line option -s, -p or
+# -t, or any combination, for example -sp, -ps, -tp, -tps. The
+# behaviour is as follows.
+#
+# -s: Rotates the screen by 90 degrees. Depending on your desktop
+# environment, the stylus input might get rotated or not.
+#
+# -p: Makes the stylus have the same rotation as the the screen.
+#
+# -t: Makes the trackpoint have the same rotation as the the screen.
+#
+# The script requires xrandr and xsetwacom.
+
+rotScreen=0
+rotPen=0
+rotTP=0
+while getopts ":spt" option; do
+  case $option in
+    s)
+      rotScreen=1
+      ;;
+    p)
+      rotPen=1
+      ;;
+    t)
+      rotTP=1
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      ;;
+  esac
+done
+
+
+# Find the display name. On some kernels it's LVDS1, on some others it's LVDS-1
+display="$(xrandr | grep LVDS | sed 's/1.*/1/')"
+
+# Find the line in "xrandr -q --verbose" output that contains current
+# screen orientation and "strip" out current orientation.
+getScreenOrientation() {
+  rotation="$(xrandr -q --verbose | grep "$display" | egrep -o '\) (normal|left|inverted|right) \(' | egrep -o '(normal|left|inverted|right)')"
+  echo $rotation
+}
+
+# Find the device name from the STYLUS-entry in "xsetwacom list"
+device="$(xsetwacom list | grep STYLUS | sed -E "s/( |\t)*id:.*//")"
+
+# Function to set the stylus orientation to the same as the screen
+setStylusToScreenOrientation() {
+  screenOrientation=$(getScreenOrientation)
+  case "$screenOrientation" in
+    normal)
+      # rotate to the normal
+      xsetwacom set "$device" rotate none
+      ;;
+    left)
+      # rotate to left (counterclockwise)
+      xsetwacom set "$device" rotate ccw
+      ;;
+    inverted)
+      # rotate to inverted
+      xsetwacom set "$device" rotate half
+      ;;
+    right)
+      # rotate to right
+      xsetwacom set "$device" rotate cw
+      ;;
+  esac
+}
+
+# Find the trackpoint device number
+trackpointNbr="$(xinput list | grep TrackPoint | sed -E "s/^.*id=//" | sed -E "s/( |\t).*$//")"
+
+# Set the trackpoint rotation to the same as the screen rotation
+setTrackpointToScreenOrientation() {
+  screenOrientation=$(getScreenOrientation)
+  case "$screenOrientation" in
+    normal)
+      # rotate to the normal
+      xinput set-prop "$trackpointNbr" "Coordinate Transformation Matrix" 1 0 0 0 1 0 0 0 1
+      ;;
+    left)
+      # rotate to left (counterclockwise)
+      xinput set-prop "$trackpointNbr" "Coordinate Transformation Matrix" 0 -1 1 1 0 0 0 0 1
+      ;;
+    inverted)
+      # rotate to inverted
+      xinput set-prop "$trackpointNbr" "Coordinate Transformation Matrix" -1 0 1 0 -1 1 0 0 1
+      ;;
+    right)
+      # rotate to right
+      xinput set-prop "$trackpointNbr" "Coordinate Transformation Matrix" 0 1 0 -1 0 1 0 0 1
+      ;;
+  esac
+}
+
+
+# Rotate the screen 90 degrees counterclockwise
+rotateScreen() {
+  screenOrientation=$(getScreenOrientation)
+  case "$screenOrientation" in
+    normal)
+      # rotate to left (counterclockwise)
+      xrandr --output "$display" --rotate left
+      ;;
+    left)
+      # rotate to inverted
+      xrandr --output "$display" --rotate inverted
+      ;;
+    inverted)
+      # rotate to right
+      xrandr --output "$display" --rotate right
+      ;;
+    right)
+      # rotate to the normal orientation
+      xrandr --output "$display" --rotate normal
+      ;;
+  esac
+}
+
+if (($rotScreen)); then
+  rotateScreen
+fi
+if (($rotPen)); then
+  setStylusToScreenOrientation
+fi
+if (($rotTP)); then
+  setTrackpointToScreenOrientation
+fi
+
+# Make sure the stylus acts on the internal display, not an external display
+xsetwacom set "$device" MapToOutput "$display"