voidsplash

#!/bin/bash
# Copyright (c) 2017 J Aylesworth <mail@jeffrey.red>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in
#   the documentation and/or other materials provided with the
#   distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#SPEED: Number of seconds to show each frame
#TARGET: Process that will end the bootsplash when started successfully
#TIMEOUT: Timeout in seconds if target does not launch
SPEED=0.03
TARGET=i3lock
TIMEOUT=10

#builtin echo in dash does not support espace sequence, but external does
/bin/echo -n -e '\033c\e[?25l' > /dev/tty8
chvt 8 &

parrot () {
    while true
        do for x in $*
            do echo "$x"
        done
    done
}

main () {
parrot /etc/voidsplash/* | while read img
do
    { sleep $SPEED ; echo 'q' ;} | fbv -cike "$img"

    if [ $SECONDS -ge $TIMEOUT ] || pgrep -x "$TARGET" > /dev/null; then
        exit 0
    fi
done
}

main &