File: backlight

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# -*- sh -*-
# vim:ft=sh:ts=8:sw=4:noet

AddConfigHandler BackLightOptions
AddConfigHelp "BackLight <boolean>" "This will enable fancy backlight fading using the xbacklight program."

DimBackLight() {
    FindXServer
    Backlight_current=$(xbacklight)
    if [ "${Backlight_current%.*}" -gt 10 ]; then
	xbacklight -set 10 || true
    fi
    return 0
}

RestoreBackLight() {
    if [ "${Backlight_current%.*}" -gt 10 ]; then
	xbacklight -set "$Backlight_current" || true
    fi
    return 0
}

BackLightOptions() {
    case $1 in
	backlight)
	    if [ ! -x "$(command -v xbacklight)" ]; then
	    	vecho 1 "xbacklight not found, disabling backlight fading..."
	    	return 0
	    fi

	    BoolIsOn "$1" "$2" || return 0
    	    if [ -z "$BACKLIGHT_HOOKED" ] ; then
		AddSuspendHook 98 DimBackLight
		AddResumeHook 90 RestoreBackLight
		BACKLIGHT_HOOKED=1
	    fi
	    ;;
	*)
	    return 1
    esac
    return 0
}

# $Id: $