From: Mischa POSLAWSKY <perl@shiar.org>
Date: Fri, 12 Jul 2019 00:33:50 +0000 (+0200)
Subject: thumb: flatten transparent images to white background
X-Git-Tag: v4.0~3
X-Git-Url: http://git.shiar.nl/minimedit.git/commitdiff_plain/85271527e754ad247974966b8899c1c2a3226b07

thumb: flatten transparent images to white background

Ensure consistent background for some SVG and PNG originals.
---

diff --git a/thumb/index.php b/thumb/index.php
index 27a194e..f15a180 100644
--- a/thumb/index.php
+++ b/thumb/index.php
@@ -89,6 +89,7 @@ function mkthumb_exec($source, $target, $width, $height)
 	$cmd = implode(' ', array_map('escapeshellarg', [
 		'convert',
 		'-trim',
+		'-background', 'white', '-layers', 'flatten',
 		'-resize', "${width}x${height}",
 		'-quality', '90%',
 		$source, "jpg:$target"