151 lines
3.8 KiB
Bash
Executable File
151 lines
3.8 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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THIS_COMMAND=$(basename "$0")
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IMG_MAGICK="magick"
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SERVICE_NAME="swaybg.service"
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WP_DIR="${XDG_CACHE_HOME:-$HOME/.cache}"
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WP_FILE="$WP_DIR/wallpaper"
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BLUR_WP="$WP_DIR/wallpaper_blur"
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usage() {
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cat << EOF
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Usage: $THIS_COMMAND [-d output_path] image1 image2 ...
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Options:
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-d, --dir OUTPUT_PATH Directory to store chosen image. (default: $WP_DIR)
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-h, --help Show this help message and exit.
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Notes:
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- This script needs 'swaybg.service' to be set up for overview background support (unless awww #521 solved). See niri documentation for details.
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- Web URLs are also supported (via 'curl' or 'wget' downloading).
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- If multiple images are provided, one will be randomly picked each time the script is executed.
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EOF
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exit 1
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}
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# showing help shouldn't require any dependencies.
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-d|--dir)
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if [[ $# -lt 2 ]]; then echo "Missing argument for $1"; usage; fi
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WP_DIR="$2"; shift 2 ;;
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-h|--help)
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usage ;;
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--)
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shift; break ;;
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-*)
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echo "Unknown option: $1"; usage ;;
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*)
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break ;;
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esac
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done
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if ! command -v awww >/dev/null 2>&1; then
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echo "x) 'awww' not found. Unable to comply." >&2
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exit 2
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fi
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if command -v magick >/dev/null 2>&1; then
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IMG_MAGICK="magick"
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elif command -v convert >/dev/null 2>&1; then
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IMG_MAGICK="convert"
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else
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echo "x) 'magick' or 'convert' not found. Image processing unavailable." >&2
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exit 2
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fi
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set_wallpaper() {
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fsize=$($IMG_MAGICK identify -format "%w %h" -- "$1" 2>/dev/null) || {
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echo "Invalid image file." >&2
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exit 10
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}
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finput=$1
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read -r fw fh <<< "$fsize"
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(( fw > 3840 && fh > 2160 )) && {
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finput=$(mktemp "${TMPDIR:-/tmp}/chbg.XXXXXXXX.webp")
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trap 'rm -f "$finput"' EXIT
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echo " -> image too large, resizing ..."
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# echo "DEBUG: resized image at $finput"
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$IMG_MAGICK "$1" -resize "3840x2160^" \
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-quality 90 \
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-define webp:method=6 \
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-define webp:alpha-quality=100 "$finput"
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}
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echo -n " -> making blurred version of '${1##*/}' ... "
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cp "$finput" "$WP_FILE"
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$IMG_MAGICK "$WP_FILE" -filter Gaussian -blur 0x30 "$BLUR_WP"
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echo "Done."
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awww img "$WP_FILE" --transition-type=random
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if [[ -f "$HOME/.config/systemd/user/niri.service.wants/$SERVICE_NAME" ]]; then
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echo " -> restarting $SERVICE_NAME ..."
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systemctl --user restart "$SERVICE_NAME"
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else
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echo " !) '$SERVICE_NAME' didn't loaded by niri. Won't reload backdrop." >&2
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echo " => See niri documentation for setting up swaybg systemd unit." >&2
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echo " => Or wait for awww #521 on codeberg being resolved." >&2
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exit 1
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fi
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}
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imagepool=()
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lastresult=""
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# Read from stdin if data is available
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if [ ! -t 0 ]; then
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while IFS= read -r line; do
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imagepool+=("$line")
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done
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fi
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# Read from positional arguments
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for arg in "$@"; do
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imagepool+=("$arg")
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done
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if [ ${#imagepool[@]} -eq 0 ]; then
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echo "No images provided." >&2
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exit 1
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fi
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mkdir -p -- "$WP_DIR" "/tmp/$USER"
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if [ -f "/tmp/$USER/chbg.last-slide.log" ]; then
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lastresult=$(cat "/tmp/$USER/chbg.last-slide.log")
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fi
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# Select a random image from the pool and set it as wallpaper
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while : ; do
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randomimage="${imagepool[RANDOM % ${#imagepool[@]}]}"
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if [[ "$randomimage" == "http://"* || "$randomimage" == "https://"* ]]; then
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break
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fi
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if [ "$randomimage" != "$lastresult" ] || [ ${#imagepool[@]} -eq 1 ]; then
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echo "$randomimage" > "/tmp/$USER/chbg.last-slide.log"
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break
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fi
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done
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echo "Selected: $randomimage"
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if [ -f "$randomimage" ]; then
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set_wallpaper "$randomimage"
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exit 0
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fi
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tmpfile=$(mktemp)
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trap 'rm -f "$tmpfile"' EXIT
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if command -v curl >/dev/null 2>&1; then
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curl -sSL "$randomimage" -o "$tmpfile"
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elif command -v wget >/dev/null 2>&1; then
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wget -qO "$tmpfile" "$randomimage"
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else
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echo "x) Unable to fetch image without 'curl' or 'wget'." >&2
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exit 2
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fi
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set_wallpaper "$tmpfile"
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