From d1f6b676915475093da83ec16bc152af2e6653b7 Mon Sep 17 00:00:00 2001
From: Ivan Mahonin <bh@icystar.com>
Date: Aug 05 2024 12:16:10 +0000
Subject: screen rotation script for pmos


---

diff --git a/.gitignore b/.gitignore
index 38a100f..d20dcad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,6 @@
 *.kdev4
 config.h
 !/maemo/
+!/pmos/
 /maemo/coolkbd.*
 /maemo/nohup*
diff --git a/pmos/rotate.sh b/pmos/rotate.sh
new file mode 100755
index 0000000..0ab90e6
--- /dev/null
+++ b/pmos/rotate.sh
@@ -0,0 +1,173 @@
+#!/bin/bash
+
+set -e
+
+# command to run a screen keyboard
+KEYBOARD="coolkbd"
+# arguments for the screen keyboard
+KEYBOARD_ARGS="/dev/input/event1"
+# name of an input device to configure (from xinput)
+INPUTDEV="Elan Touchscreen"
+
+
+# name of a transformation matrix property of the device
+MATRIX_PROP="Coordinate Transformation Matrix"
+# name of a dead edges sizes property of the device
+# by this property you can disable keyboard area from taps
+# use it if the screen keyboard handle touches by it self directly from a device
+# just comment out this if you don't need this feature
+EDGE_PROP="Trackpad Edge Sizes"
+# height of a dead zone area at the bottom of the screen
+# integer value - count of percents of the screen height
+KEYAREA=20
+
+
+
+function usage() {
+    echo ""
+    echo "Usage ./rotate.sh [command] ..."
+    echo "  available commands:"
+    echo "    kbon     - open screen keyboard"
+    echo "    kboff    - close screen keyboard"
+    echo "    kbtoggle - toggle screen keyboard"
+    echo "    normal,left,inverted,right"
+    echo "             - comma separated looped sequence of orientations"
+    echo "               screen will be turned to the next state relative to current"
+    echo "               if only one item is in sequence"
+    echo "                   then screen will turned into it"
+    echo "               if current state if not present in the sequence"
+    echo "                   then the first item will be chosen"
+    echo "  without configure the input device for the current orientation"
+    echo ""
+    exit 1
+}
+
+
+
+# function gets a next item from the looped sequence
+# example: next normal,left,inverted,right left
+# will be echoed: inverted
+function next() {
+    local res="$(echo "$1" | tr -s , '\n' | grep -i -x -A 1 "$2" | tail +2)"
+    if [ -z "$res" ]; then
+        res="$(echo "$1" | tr -s , '\n' | head -1)"
+    fi
+    echo "$res"
+}
+
+
+# always returns a valid name of the rotation (bad values will replaced with 'normal')
+function fix_rotation_name() {
+    case "$1" in
+    right | inverted | left) echo "$1";;
+    *) echo "normal";;
+    esac
+}
+
+
+# check if the first arg is a comma separated sequence of valid rotation names
+function is_rotation_sequence() {
+    local s="$(echo "$1" | tr -s , ' ')"
+    local x=
+    for x in $s; do
+        [ "$x" == "$(fix_rotation_name "$x")" ]
+    done
+}
+
+
+# show the current screen rotation
+function current_rotation() {
+    fix_rotation_name "$(xrandr --screen 0 --current --query | head -2 | tail -1 | cut -d' ' -f5)"
+}
+
+
+# turn screen to chosen rotation
+# possible values: normal, left, inverted and right
+function rotate_screen() {
+    xrandr -o "$1"
+}
+
+
+# keyboard functions
+function is_keyboard_run() {
+    [ -n "$KEYBOARD" ]
+    pidof "$KEYBOARD" > /dev/null
+}
+function run_keyboard() {
+    if ! is_keyboard_run; then
+        nohup $KEYBOARD $KEYBOARD_ARGS &> /dev/null &
+    fi
+}
+function stop_keyboard() {
+    [ -z "$KEYBOARD" ] || killall -q "$KEYBOARD" || true
+}
+function toggle_keyboard() {
+    [ -n "$KEYBOARD" ] || return
+    if is_keyboard_run; then stop_keyboard; else run_keyboard; fi
+}
+
+
+# configure the input device for a specified rotation
+function configure_input() {
+    local rot="$(current_rotation)"
+    local matrix=
+    local edges=
+    local area=0
+    if is_keyboard_run; then area="$KEYAREA"; fi
+
+    echo "configure the input device for orientation: $rot"
+    case "$rot" in
+    left)
+        matrix="0 -1 1 1 0 0 0 0 1"
+        edges="0 0 0 $area"
+        ;;
+    right)
+        matrix="0 1 0 -1 0 1 0 0 1"
+        edges="0 0 $area 0"
+        ;;
+    inverted)
+        matrix="-1 0 1 0 -1 1 0 0 1"
+        edges="$area 0 0 0"
+        ;;
+    *)
+        matrix="1 0 0 0 1 0 0 0 1"
+        edges="0 $area 0 0"
+        ;;
+    esac
+
+    [ -z "$INPUTDEV" ] || [ -z "$MATRIX_PROP" ] || \
+        xinput --set-prop "$INPUTDEV" "$MATRIX_PROP" $matrix
+    [ -z "$INPUTDEV" ] || [ -z "$EDGE_PROP" ] || [ -z "$KEYAREA" ] || \
+        xinput --set-prop "$INPUTDEV" "$EDGE_PROP" $edges
+}
+
+
+
+# parse arguments
+SHOW_USAGE=
+while [ "$#" != "0" ]; do
+  if [ "$1" = "kbon" ]; then
+    echo "open screen keyboard"
+    run_keyboard
+  elif [ "$1" = "kboff" ]; then
+    echo "close screen keyboard"
+    stop_keyboard
+  elif [ "$1" = "kbtoggle" ]; then
+    echo "toggle screen keyboard"
+    toggle_keyboard
+  elif is_rotation_sequence "$1"; then
+    ROT="$(current_rotation)"
+    ROT="$(next "$1" "$ROT")"
+    echo "turn screen to: $ROT"
+    rotate_screen "$ROT"
+  else
+    echo "unknown command: $1"
+    SHOW_USAGE=1
+  fi
+  shift
+done
+
+
+configure_input
+[ -z "$SHOW_USAGE" ] || usage
+