Add per-tool settings and gesture customization
This commit is contained in:
ajp_anton
@@ -0,0 +1,192 @@
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#!/usr/bin/env bash
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# SPDX-License-Identifier: MIT
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set -euo pipefail
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root=${TOUCHPAD_HOLD_TAP_TEST_ROOT:-}
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config_file="$root/etc/touchpad-hold-tap.conf"
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override_file="$root/etc/libinput/plugins/90-touchpad-hold-tap.lua"
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template_file="$root/usr/lib64/libinput/plugins/90-touchpad-hold-tap.lua"
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if [[ ! -e $template_file ]]; then
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template_file="$root/usr/lib/libinput/plugins/90-touchpad-hold-tap.lua"
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fi
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minimum_anchor_age_ms=100
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minimum_pause_ms=100
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minimum_tap_ms=10
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maximum_tap_ms=150
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output_event=BTN_MIDDLE
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die()
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{
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printf 'touchpad-hold-tap-config: %s\n' "$*" >&2
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exit 1
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}
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require_root()
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{
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if [[ -z $root && $EUID -ne 0 ]]; then
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die "this operation must be run as root"
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fi
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}
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validate()
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{
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[[ $minimum_anchor_age_ms =~ ^[0-9]+$ ]] || die "minimum anchor age must be an integer"
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[[ $minimum_pause_ms =~ ^[0-9]+$ ]] || die "minimum pause must be an integer"
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[[ $minimum_tap_ms =~ ^[0-9]+$ ]] || die "minimum tap duration must be an integer"
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[[ $maximum_tap_ms =~ ^[0-9]+$ ]] || die "maximum tap duration must be an integer"
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(( minimum_anchor_age_ms <= 2000 )) || die "minimum anchor age must not exceed 2000 ms"
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(( minimum_pause_ms <= 2000 )) || die "minimum pause must not exceed 2000 ms"
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(( maximum_tap_ms >= 1 && minimum_tap_ms <= maximum_tap_ms && maximum_tap_ms <= 2000 )) || \
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die "tap durations must be between 0 and 2000 ms, with a positive maximum and minimum not exceeding maximum"
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[[ $output_event =~ ^(BTN|KEY)_[A-Z0-9_]+$ ]] || \
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die "output event must be an evdev BTN_* or KEY_* name"
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}
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read_config()
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{
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if [[ ! -r $config_file ]]; then
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return 0
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fi
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while IFS='=' read -r key value; do
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case $key in
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MINIMUM_ANCHOR_AGE_MS) minimum_anchor_age_ms=$value ;;
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MINIMUM_PAUSE_MS) minimum_pause_ms=$value ;;
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MINIMUM_TAP_MS) minimum_tap_ms=$value ;;
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MAXIMUM_TAP_MS) maximum_tap_ms=$value ;;
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OUTPUT_EVENT) output_event=$value ;;
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''|'#'*) ;;
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*) die "unknown setting: $key" ;;
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esac
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done < "$config_file"
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validate
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}
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write_config()
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{
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mkdir -p "$(dirname -- "$config_file")"
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local temporary
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temporary=$(mktemp "${config_file}.XXXXXX")
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trap 'rm -f -- "$temporary"' RETURN
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printf 'MINIMUM_ANCHOR_AGE_MS=%s\nMINIMUM_PAUSE_MS=%s\nMINIMUM_TAP_MS=%s\nMAXIMUM_TAP_MS=%s\nOUTPUT_EVENT=%s\n' \
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"$minimum_anchor_age_ms" "$minimum_pause_ms" "$minimum_tap_ms" "$maximum_tap_ms" \
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"$output_event" > "$temporary"
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chmod 0644 "$temporary"
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mv -f -- "$temporary" "$config_file"
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trap - RETURN
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}
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write_override()
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{
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[[ -r $template_file ]] || die "installed plugin was not found"
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mkdir -p "$(dirname -- "$override_file")"
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local temporary
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temporary=$(mktemp "${override_file}.XXXXXX")
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trap 'rm -f -- "$temporary"' RETURN
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awk -v age="$minimum_anchor_age_ms" -v pause="$minimum_pause_ms" \
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-v mintap="$minimum_tap_ms" \
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-v maxtap="$maximum_tap_ms" \
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-v output="$output_event" '
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/^local settings = / {
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print "local settings = {"
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print " minimum_anchor_age_ms = " age ","
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print " minimum_pause_ms = " pause ","
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print " minimum_tap_ms = " mintap ","
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print " maximum_tap_ms = " maxtap ","
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print " output_event = \"" output "\","
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print "}"
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replaced = 1
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next
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}
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{ print }
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END { if (!replaced) exit 1 }
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' "$template_file" > "$temporary" || die "installed plugin has an unsupported format"
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chmod 0644 "$temporary"
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mv -f -- "$temporary" "$override_file"
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trap - RETURN
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}
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usage()
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{
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cat <<'EOF'
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Usage:
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touchpad-hold-tap-config show
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touchpad-hold-tap-config set [--minimum-anchor-age-ms N] [--minimum-pause-ms N] [--minimum-tap-ms N] [--maximum-tap-ms N] [--output-event NAME]
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touchpad-hold-tap-config reset
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touchpad-hold-tap-config refresh
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EOF
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}
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command=${1:-}
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case $command in
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show)
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[[ $# -eq 1 ]] || die "show takes no arguments"
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read_config
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printf 'MINIMUM_ANCHOR_AGE_MS=%s\nMINIMUM_PAUSE_MS=%s\nMINIMUM_TAP_MS=%s\nMAXIMUM_TAP_MS=%s\nOUTPUT_EVENT=%s\n' \
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"$minimum_anchor_age_ms" "$minimum_pause_ms" "$minimum_tap_ms" "$maximum_tap_ms" \
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"$output_event"
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;;
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set)
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shift
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read_config
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while [[ $# -gt 0 ]]; do
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case $1 in
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--minimum-anchor-age-ms)
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[[ $# -ge 2 ]] || die "$1 requires a value"
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minimum_anchor_age_ms=$2
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shift 2
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;;
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--minimum-pause-ms)
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[[ $# -ge 2 ]] || die "$1 requires a value"
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minimum_pause_ms=$2
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shift 2
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;;
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--minimum-tap-ms)
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[[ $# -ge 2 ]] || die "$1 requires a value"
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minimum_tap_ms=$2
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shift 2
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;;
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--maximum-tap-ms)
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[[ $# -ge 2 ]] || die "$1 requires a value"
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maximum_tap_ms=$2
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shift 2
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;;
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--output-event)
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[[ $# -ge 2 ]] || die "$1 requires a value"
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output_event=$2
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shift 2
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;;
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*) die "unknown option: $1" ;;
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esac
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done
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require_root
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validate
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write_config
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write_override
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;;
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reset)
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[[ $# -eq 1 ]] || die "reset takes no arguments"
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require_root
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rm -f -- "$config_file" "$override_file"
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;;
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refresh)
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[[ $# -eq 1 ]] || die "refresh takes no arguments"
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require_root
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if [[ -e $config_file ]]; then
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read_config
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write_override
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else
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rm -f -- "$override_file"
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fi
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;;
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-h|--help)
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usage
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;;
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*)
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usage >&2
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exit 2
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;;
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esac
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