Revert "[stable12] theming lightness correction"

diff --git a/apps/theming/lib/Util.php b/apps/theming/lib/Util.php
index e5fa90cb344322daaf6226558be07cce79495b54..286756a4849e91f71c3ef5d564f8d14c3049ad66 100644 (file)
--- a/apps/theming/lib/Util.php
+++ b/apps/theming/lib/Util.php
@@ -30,7 +30,6 @@ use OCP\Files\NotFoundException;
 use OCP\Files\SimpleFS\ISimpleFile;
 use OCP\IConfig;
 use OCP\Files\IRootFolder;
-use Leafo\ScssPhp\Compiler;
 
 class Util {
 
@@ -96,12 +95,10 @@ class Util {
                if (strlen($hex) !== 6) {
                        return 0;
                }
-               $red = hexdec(substr($hex, 0, 2));
-               $green = hexdec(substr($hex, 2, 2));
-               $blue = hexdec(substr($hex, 4, 2));
-               $compiler = new Compiler();
-               $hsl = $compiler->toHSL($red, $green, $blue);
-               return $hsl[3]/100;
+               $r = hexdec(substr($hex, 0, 2));
+               $g = hexdec(substr($hex, 2, 2));
+               $b = hexdec(substr($hex, 4, 2));
+               return (0.299 * $r + 0.587 * $g + 0.114 * $b)/255;
        }
 
        /**