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aglab.dotfiles/bin/chbg

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#!/bin/bash
# to change wallpapers both niri workspace and niri tab view
[ -z "$1" ] && {
echo "Usage: ${0##*/} <image-file>"
exit 1
}
fsize=$(magick identify -format "%w %h" -- "$1" 2>/dev/null) || {
echo "ERROR: unable to identify. is it an EXISTING ACCESSIBLE IMAGE file?"
exit 1
}
WP_DIR="${XDG_DATA_HOME:-$HOME/.local/share}"
finput=$1
read -r fw fh <<< "$fsize"
(( fw > 3840 && fh > 2160 )) && {
finput=$(mktemp "${TMPDIR:-/tmp}/chbg.XXXXXXXX.webp")
trap 'rm -f "$finput"' EXIT
echo "WARNING: image too large, resizing ..."
# echo "DEBUG: resized image at $finput"
magick "$1" -resize "3840x2160^" \
-quality 90 \
-define webp:method=6 \
-define webp:alpha-quality=100 "$finput"
}
echo -n "making blurred version of ${1##*/} ... "
mkdir -p $WP_DIR
cp $finput $WP_DIR/.wallpaper
magick $WP_DIR/.wallpaper -filter Gaussian -blur 0x30 $WP_DIR/.wallpaper_blur
echo "Done."
swww img $WP_DIR/.wallpaper
swww img $WP_DIR/.wallpaper_blur --namespace blur