Switches the default logo color depending on the primary color

Signed-off-by: Michael Weimann <mail@michael-weimann.eu>

2 files changed, 21 insertions, 1 deletions

diff --git a/apps/theming/lib/ImageManager.php b/apps/theming/lib/ImageManager.php
index dfbdb582da6..6a42c22aba5 100644
--- a/apps/theming/lib/ImageManager.php
+++ b/apps/theming/lib/ImageManager.php
@@ -84,6 +84,8 @@ class ImageManager {
 			case 'logoheader':
 			case 'favicon':
 				return $this->urlGenerator->imagePath('core', 'logo.png') . '?v=' . $cacheBusterCounter;
+			case 'logo-blue':
+				return $this->urlGenerator->imagePath('core', 'logo-blue.png') . '?v=' . $cacheBusterCounter;
 			case 'background':
 				return $this->urlGenerator->imagePath('core', 'background.png') . '?v=' . $cacheBusterCounter;
 		}
diff --git a/apps/theming/lib/ThemingDefaults.php b/apps/theming/lib/ThemingDefaults.php
index 1df7a9f17bb..5a14e8a7903 100644
--- a/apps/theming/lib/ThemingDefaults.php
+++ b/apps/theming/lib/ThemingDefaults.php
@@ -275,7 +275,7 @@ class ThemingDefaults extends \OC_Defaults {
 			'theming-favicon-mime' => "'" . $this->config->getAppValue('theming', 'faviconMime') . "'"
 		];
 
-		$variables['image-logo'] = "url('".$this->imageManager->getImageUrl('logo')."')";
+		$variables['image-logo'] = "url('". $this->getLogoUrl() ."')";
 		$variables['image-logoheader'] = "'".$this->imageManager->getImageUrl('logoheader')."'";
 		$variables['image-favicon'] = "'".$this->imageManager->getImageUrl('favicon')."'";
 		$variables['image-login-background'] = "url('".$this->imageManager->getImageUrl('background')."')";
@@ -301,6 +301,24 @@ class ThemingDefaults extends \OC_Defaults {
 	}
 
 	/**
+	 * Returns the logo url.
+	 * If there is a custom logo, it just returns it.
+	 * For the default logo it returns the white or blue one depending on the color luminance.
+	 *
+	 * @return string
+	 */
+	private function getLogoUrl() {
+		$logoMime = $this->config->getAppValue('theming', 'logoMime');
+		$primaryColor = $this->getColorPrimary();
+		$luminance = $this->util->calculateLuminance($primaryColor);
+		if ($logoMime === '' & $luminance > 0.8) {
+			return $this->imageManager->getImageUrl('logo-blue');
+		} else {
+			return $this->imageManager->getImageUrl('logo');
+		}
+	}
+
+	/**
 	 * Check if the image should be replaced by the theming app
 	 * and return the new image location then
 	 *