I38/scripts/toggle_screenreader.sh

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#!/usr/bin/env bash
# This file is part of I38.
#
# I38 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.
#
# I38 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 I38. If not, see <https://www.gnu.org/licenses/>.
is_running() {
pgrep -x "$1" >/dev/null
return $?
}
speak() {
spd-say -P important -Cw -- "$*"
}
# Make sure screen readers are available
orcaAvailable=false
cthulhuAvailable=false
if command -v orca &> /dev/null; then
orcaAvailable=true
fi
if command -v cthulhu &> /dev/null; then
cthulhuAvailable=true
fi
# Check if at least one screen reader is available
if ! $orcaAvailable && ! $cthulhuAvailable; then
speak "No screen readers found. Please install Orca or Cthulhu."
yad --center --title="I38" --alert="No screen readers found.\nPlease install Orca or Cthulhu."
exit 1
fi
# Determine current state
currentReader="none"
if is_running "cthulhu"; then
currentReader="cthulhu"
elif is_running "orca"; then
currentReader="orca"
fi
# Build YAD command based on available screen readers
items=()
# First add the currently active screen reader
if [ "$currentReader" != "none" ]; then
if [ "$currentReader" = "cthulhu" ] && $cthulhuAvailable; then
items+=("Cthulhu (active)" "cthulhu")
elif [ "$currentReader" = "orca" ] && $orcaAvailable; then
items+=("Orca (active)" "orca")
fi
fi
if $cthulhuAvailable && [ "$currentReader" != "cthulhu" ]; then
items+=("Cthulhu" "cthulhu")
fi
if $orcaAvailable && [ "$currentReader" != "orca" ]; then
items+=("Orca" "orca")
fi
# Display the dialog
result=$(yad --center --title="Screen Reader Toggle" --text="Select screen reader:" \
--list --on-top --skip-taskbar \
--button="Cancel:1" --button="OK:0" \
--column="Screen Reader" --column=ID:HD "${items[@]}")
exitCode=$?
if [ $exitCode -ne 0 ]; then
exit 0
fi
if [ -n "$result" ]; then
# Extract the selected reader from the result
selectedReader=$(echo "$result" | cut -d'|' -f2)
# Don't do anything if selecting the already active reader
if [ "$selectedReader" = "$currentReader" ]; then
exit 0
fi
# Stop current screen reader
if [ "$currentReader" != "none" ]; then
speak "Switching from $currentReader to $selectedReader."
pkill -15 "$currentReader"
sleep 0.5
else
speak "Starting $selectedReader."
fi
if [ "$selectedReader" = "orca" ]; then
orca &
else
cthulhu &
fi
fi
exit 0