MDL-88225 admin: New login screen image

- Improved image and add an AI watermark

public/theme/boost/lib.php

@@ -57,15 +57,18 @@ function theme_boost_get_extra_scss($theme) {
 
     // Sets the login background image.
     $loginbackgroundimageurl = $theme->setting_file_url('loginbackgroundimage', 'loginbackgroundimage');
+    $backgroundposition = '';
     if (empty($loginbackgroundimageurl)) {
         // Use the default login background image.
         $loginbackgroundimageurl = $theme->image_url(
             'login_background',
             'theme',
         );
+        // Set the default background position to ensure the watermark is visible.
+        $backgroundposition = 'background-position: bottom right;';
     }
     $content .= 'body.pagelayout-login #page .login-layout-left { ';
-    $content .= "background-image: url('$loginbackgroundimageurl'); background-size: cover;";
+    $content .= "background-image: url('$loginbackgroundimageurl'); background-size: cover; {$backgroundposition}";
     $content .= ' }';
 
     // Always return the background image with the scss when we have it.

public/theme/classic/lib.php

@@ -108,15 +108,18 @@ function theme_classic_get_extra_scss($theme) {
 
     // Sets the login background image.
     $loginbackgroundimageurl = $theme->setting_file_url('loginbackgroundimage', 'loginbackgroundimage');
+    $backgroundposition = '';
     if (empty($loginbackgroundimageurl)) {
         // Use the default login background image.
         $loginbackgroundimageurl = $theme->image_url(
             'login_background',
             'theme',
         );
+        // Set the default background position to ensure the watermark is visible.
+        $backgroundposition = 'background-position: bottom right;';
     }
     $content .= 'body.pagelayout-login #page .login-layout-left { ';
-    $content .= "background-image: url('$loginbackgroundimageurl'); background-size: cover;";
+    $content .= "background-image: url('$loginbackgroundimageurl'); background-size: cover; {$backgroundposition}";
     $content .= ' }';
 
     if (!empty($theme->settings->navbardark)) {