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authorRoeland Jago Douma <rullzer@users.noreply.github.com>2020-10-26 20:47:28 +0100
committerGitHub <noreply@github.com>2020-10-26 20:47:28 +0100
commit6dd37853325e9d85718bf3fb656000aee057a63e (patch)
tree434fa4912d16045dcc8de4d80085d0ac6a294379 /apps
parente7a8061130d7c7ef5ce44d96600d3248c940ffa6 (diff)
parent68f1f44e58ffee480e233e32c8756c4dafbd926d (diff)
downloadnextcloud-server-6dd37853325e9d85718bf3fb656000aee057a63e.tar.gz
nextcloud-server-6dd37853325e9d85718bf3fb656000aee057a63e.zip
Merge pull request #23680 from nextcloud/fix/theming/background-transparency
Enable theming background transparency
Diffstat (limited to 'apps')
-rw-r--r--apps/theming/lib/ImageManager.php6
1 files changed, 5 insertions, 1 deletions
diff --git a/apps/theming/lib/ImageManager.php b/apps/theming/lib/ImageManager.php
index 2b58fa499f4..a50522cd895 100644
--- a/apps/theming/lib/ImageManager.php
+++ b/apps/theming/lib/ImageManager.php
@@ -228,13 +228,17 @@ class ImageManager {
// either to big or are not progressive rendering.
$newImage = @imagecreatefromstring(file_get_contents($tmpFile));
+ // Preserve transparency
+ imagesavealpha($newImage, true);
+ imagealphablending($newImage, true);
+
$tmpFile = $this->tempManager->getTemporaryFile();
$newWidth = (int)(imagesx($newImage) < 4096 ? imagesx($newImage) : 4096);
$newHeight = (int)(imagesy($newImage) / (imagesx($newImage) / $newWidth));
$outputImage = imagescale($newImage, $newWidth, $newHeight);
imageinterlace($outputImage, 1);
- imagejpeg($outputImage, $tmpFile, 75);
+ imagepng($outputImage, $tmpFile, 8);
imagedestroy($outputImage);
$target->putContent(file_get_contents($tmpFile));