From d9f12af739c11c70fa1e8132dba8f849395e939b Mon Sep 17 00:00:00 2001
From: Jeroen van den Enden <info@endroid.nl>
Date: Wed, 5 Jan 2022 21:27:44 +0000
Subject: [PATCH] Fix transparency issue

---
 src/Writer/PngWriter.php | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/src/Writer/PngWriter.php b/src/Writer/PngWriter.php
index 00eccc4..e944d84 100644
--- a/src/Writer/PngWriter.php
+++ b/src/Writer/PngWriter.php
@@ -44,16 +44,10 @@ public function write(QrCodeInterface $qrCode, LogoInterface $logo = null, Label
             $qrCode->getForegroundColor()->getAlpha()
         );
 
-        /** @var int $backgroundColor */
-        $backgroundColor = imagecolorallocatealpha(
-            $baseImage,
-            $qrCode->getBackgroundColor()->getRed(),
-            $qrCode->getBackgroundColor()->getGreen(),
-            $qrCode->getBackgroundColor()->getBlue(),
-            $qrCode->getBackgroundColor()->getAlpha()
-        );
+        /** @var int $transparentColor */
+        $transparentColor = imagecolorallocatealpha($baseImage, 255, 255, 255, 127);
 
-        imagefill($baseImage, 0, 0, $backgroundColor);
+        imagefill($baseImage, 0, 0, $transparentColor);
 
         for ($rowIndex = 0; $rowIndex < $matrix->getBlockCount(); ++$rowIndex) {
             for ($columnIndex = 0; $columnIndex < $matrix->getBlockCount(); ++$columnIndex) {