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dotfiles/hypr/.config/hypr/scripts/screensaver-tte.sh
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2026-09-25 15:57:38 +02:00

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#!/usr/bin/env bash
# screensaver-tte.sh — runs inside each fullscreen tte kitty.
# Loops random tte effects until any keypress, then exits (kitty closes).
# Child teardown uses the exact PID ($!) — never pkill -f patterns, which
# would also match bystander shells mentioning the class name.
set -euo pipefail
SCREENSAVER_TEXT="$HOME/.config/hypr/screensaver.txt"
trap 'exit 0' SIGINT SIGTERM SIGHUP SIGQUIT
printf '\033]11;rgb:00/00/00\007' # black background
input="$SCREENSAVER_TEXT"
[[ -f "$input" ]] || input="/etc/hostname"
while true; do
tte -i <(fastfetch --pipe) \
--frame-rate 60 --canvas-width 0 --canvas-height 0 \
--anchor-canvas c --anchor-text c \
--random-effect --exclude-effects dev_worm \
--no-eol --no-restore-cursor &
TPID=$!
# Wait for tte to appear (Python startup) before polling it.
for _ in $(seq 1 10); do
kill -0 "$TPID" 2>/dev/null || break
pgrep -x tte >/dev/null 2>&1 && break
sleep 0.1
done
while kill -0 "$TPID" 2>/dev/null; do
if read -r -n1 -t 1; then
kill "$TPID" 2>/dev/null || true
wait "$TPID" 2>/dev/null || true
exit 0
fi
done
wait "$TPID" 2>/dev/null || true
# Throttle respawn if tte exits instantly (e.g. a sub-second effect).
sleep 0.2
done