From fc8a0ee32a9b13f9c68b05855c71a8d8fbd7ce60 Mon Sep 17 00:00:00 2001
From: "SilverAg.L" <caclx@outlook.com>
Date: Sun, 9 Nov 2025 02:47:26 +0800
Subject: [PATCH] chbg: to shrink image when too large (i.e. bigger than
 3840x2160).

- images too large may cause lagging, especially gtklock.
---
 bin/chbg | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/bin/chbg b/bin/chbg
index b01643f..f4eee24 100755
--- a/bin/chbg
+++ b/bin/chbg
@@ -3,10 +3,20 @@
 [ -z "$1" ] && { echo "Usage: $0 <image-file>"; exit 1; }
 
 WP_DIR="$HOME/.local/share"
+finput=$1
 
-echo -n "making blurred version... "
+fw=$(magick identify -format "%w\n" $1)
+fh=$(magick identify -format "%h\n" $1)
+if [[ $((fw)) > 3840 && $((fh)) > 2160 ]]
+then
+	finput="/tmp/${finput##*/}"
+	echo "WARNING: image too large, resizing ..."
+	magick $1 -resize "3840x2160^" $finput
+fi
+
+echo -n "making blurred version of $finput ... "
 mkdir -p $WP_DIR
-cp $1 $WP_DIR/.wallpaper
+cp $finput $WP_DIR/.wallpaper
 magick $WP_DIR/.wallpaper -filter Gaussian -blur 0x30 $WP_DIR/.wallpaper_blur
 echo "Done."