niceties

niceties/xjiggler

@@ -0,0 +1,116 @@
+#!/bin/sh
+set -e
+
+# based on https://github.com/carrot69/keep-presence/
+
+test -n "$XJIGGLER_DELAY_ACTION" \
+	|| XJIGGLER_DELAY_ACTION=300	# seconds
+test -n "$XJIGGLER_DELAY_DETECTION" \
+	|| XJIGGLER_DELAY_DETECTION=60	# seconds
+test -n "$XJIGGLER_KEYBOARD_ENABLED" \
+	|| XJIGGLER_KEYBOARD_ENABLED=''	# zero-len nonzero-len
+test -n "$XJIGGLER_MOUSE_DIRECTION" \
+	|| XJIGGER_MOUSE_DIRECTION=DIAGONAL # "CIRCULAR" "DIAGONAL"
+test -n "$XJIGGLER_MOUSE_DISTANCE" \
+	|| XJIGGLER_MOUSE_DISTANCE=1	# pixels
+test -n "$XJIGGLER_MOUSE_ENABLED" \
+	|| XJIGGLER_MOUSE_ENABLED=yes	# zero-len nonzero-len
+
+# eval is scary but this use was mentioned in the man page
+getmouselocation(){
+	eval $(xdotool getmouselocation --shell | sed 's/^/XJIGGLER_/g')
+	XJIGGLER_T="$(date '+%s')"
+}
+
+jiggle(){
+	test -z "$XJIGGLER_MOUSE_ENABLED" \
+		|| xdotool mousemove_relative "$XJIGGLER_MOUSE_dX" \
+			"$XJIGGLER_MOUSE_dY"
+}
+
+pushmouselocation(){
+	XJIGGLER_lastT="$XJIGGLER_T"
+	XJIGGLER_lastX="$XJIGGLER_X"
+	XJIGGLER_lastY="$XJIGGLER_Y"
+}
+
+printdebug(){
+	printf "XJIGGLER_T=%s\n" "$XJIGGLER_T"	# seconds since epoch
+	printf "XJIGGLER_X=%s\n" "$XJIGGLER_X"	# pixels
+	printf "XJIGGLER_Y=%s\n" "$XJIGGLER_Y"	# pixels
+	printf "XJIGGLER_lastT=%s\n" "$XJIGGLER_lastT"
+	printf "XJIGGLER_lastX=%s\n" "$XJIGGLER_lastX"
+	printf "XJIGGLER_lastY=%s\n" "$XJIGGLER_lastY"
+}
+
+rotatemousedirection(){
+	case "$XJIGGLER_MOUSE_DIRECTION" in
+	up)	XJIGGLER_MOUSE_DIRECTION=right
+		XJIGGLER_MOUSE_dX="$XJIGGLER_MOUSE_DISTANCE"
+		XJIGGLER_MOUSE_dY=0
+		return;	;;
+	right)	XJIGGLER_MOUSE_DIRECTION=down
+		XJIGGLER_MOUSE_dX=0
+		XJIGGLER_MOUSE_dY="$XJIGGLER_MOUSE_DISTANCE"
+		return;	;;
+	down)	XJIGGLER_MOUSE_DIRECTION=left
+		XJIGGLER_MOUSE_dX=-"$XJIGGLER_MOUSE_DISTANCE"
+		XJIGGLER_MOUSE_dY=0
+		return;	;;
+	CIRCULAR | left)
+		XJIGGLER_MOUSE_DIRECTION=up
+		XJIGGLER_MOUSE_dX=0
+		XJIGGLER_MOUSE_dY=-"$XJIGGLER_MOUSE_DISTANCE"
+	DIAGONAL | *)
+		XJIGGLER_MOUSE_dX="$XJIGGLER_MOUSE_DISTANCE"
+		XJIGGLER_MOUSE_dY="$XJIGGLER_MOUSE_DISTANCE"
+		return;	;;
+		return; ;;
+	esac
+}
+
+usage(){
+	printf 'Usage: %s (-chm) (-d [distance]) %s\n' \
+		"$0" '(-s [action delay seconds])'>&2
+	exit 64 # sysexits(3) EX_USAGE
+}
+
+while getopts :cd:hms: OPTION
+do
+	case "$OPTION" in
+	c)	XJIGGLER_MOUSE_DIRECTION=DIAGONAL	;;
+	d)	XJIGGLER_MOUSE_DISTANCE="$OPTARG)"	;;
+	m)	XJIGGLER_MOUSE_ENABLED=''	;;
+	s)	XJIGGLER_DELAY_ACTION="$(OPTARG)"	;;
+	*)	usage	;;
+	esac
+done
+
+getmouselocation; pushmouselocation
+
+while true
+do
+
+	sleep "$XJIGGLER_DELAY_DETECTION"
+	getmouselocation
+	if test "$XJIGGLER_lastX" = "$XJIGGLER_X" \
+			&& test "$XJIGGLER_lastY" = "$XJIGGLER_Y"
+	then	# no movement
+		command -v xprintidle \
+			&& test "$(xprintidle \
+					| sed -e 's/^/0/' -e 's/...$//')" \
+				-gt "$XJIGGLER_DELAY_ACTION" \
+			|| test "$(printf '%s\n%s\n-\np\n' "$XJIGGLER_T" \
+					"$XJIGGLER_lastT" \
+				| dc)" -gt "$XJIGGLER_DELAY_ACTION" \
+			|| continue	# hasn't been long enough
+		rotatemousedirection; jiggle
+		printf '%s: Jiggled:\n' "$0"
+		printdebug | sed 's/^/\t/g'
+		getmouselocation
+	else	# movement
+		printf '%s: Movement detected:\n' "$0"
+		printdebug | sed 's/^/\t/g'
+	fi
+	pushmouselocation
+done >&2