Fix logo colour on bright primary colour

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

apps/theming/lib/Themes/DefaultTheme.php

@@ -89,6 +89,8 @@ class DefaultTheme implements ITheme {
 		$colorBoxShadow = $this->util->darken($colorMainBackground, 70);
 		$colorBoxShadowRGB = join(',', $this->util->hexToRGB($colorBoxShadow));
 
+		$hasCustomLogoHeader = $this->imageManager->hasImage('logo') ||  $this->imageManager->hasImage('logoheader');
+
 		$variables = [
 			'--color-main-background' => $colorMainBackground,
 			'--color-main-background-rgb' => $colorMainBackgroundRGB,
@@ -194,6 +196,10 @@ class DefaultTheme implements ITheme {
 			}
 		}
 
+		if ($hasCustomLogoHeader) {
+			$variables["--image-logoheader-custom"] = true;
+		}
+
 		return $variables;
 	}
 

core/css/header.scss

@@ -182,12 +182,8 @@
 		left: 12px;
 		top: 1px;
 		bottom: 1px;
-
-		img {
-			opacity: 0;
-			max-width: 100%;
-			max-height: 200px;
-		}
+		// Invert custom logo if primary too bright
+		filter: var(--image-logoheader-custom, var(--primary-invert-if-bright))
 	}
 
 	.header-appname-container {