Set the path of theme preview image manually

modules/cms/classes/Theme.php

@@ -58,6 +58,7 @@ class Theme
         $theme = new static;
         $theme->setDirName($dirName);
         $theme->registerHalyconDatasource();
+
         return $theme;
     }
 
@@ -133,6 +134,7 @@ class Theme
     public function isActiveTheme()
     {
         $activeTheme = self::getActiveTheme();
+
         return $activeTheme && $activeTheme->getDirName() == $this->getDirName();
     }
 
@@ -374,7 +376,12 @@ class Theme
      */
     public function getPreviewImageUrl()
     {
-        $previewPath = '/assets/images/theme-preview.png';
+        $previewPath = $this->getConfigValue('preview');
+
+        if (!$previewPath) {
+            $previewPath = '/assets/images/theme-preview.png';
+        }
+
         if (File::exists($this->getPath().$previewPath)) {
             return Url::asset('themes/'.$this->getDirName().$previewPath);
         }
@@ -390,6 +397,7 @@ class Theme
     {
         self::$activeThemeCache = false;
         self::$editThemeCache = false;
+
         Cache::forget(self::ACTIVE_KEY);
         Cache::forget(self::EDIT_KEY);
     }

modules/cms/classes/theme/fields.yaml

@@ -45,3 +45,10 @@ tabs:
         code:
             label: cms::lang.theme.code_label
             placeholder: cms::lang.theme.code_placeholder
+            span: auto
+
+        preview:
+            label: cms::lang.theme.preview_label
+            placeholder: cms::lang.theme.preview_placeholder
+            default: '/assets/images/theme-preview.png'
+            span: auto

modules/cms/lang/en/lang.php

@@ -11,14 +11,14 @@ return [
         'error_deleting' => "Error deleting the template file ':name'. Please check write permissions.",
         'delete_success' => 'Templates deleted: :count.',
         'file_name_required' => 'The File Name field is required.',
-        'safe_mode_enabled' => 'Safe mode is currently enabled.',
+        'safe_mode_enabled' => 'Safe mode is currently enabled.'
     ],
     'dashboard' => [
         'active_theme' => [
             'widget_title_default' => 'Website',
             'online' => 'Online',
             'maintenance' => 'In maintenance',
-            'manage_themes' => 'Manage themes',
+            'manage_themes' => 'Manage themes'
         ]
     ],
     'theme' => [
@@ -45,6 +45,8 @@ return [
         'homepage_placeholder' => 'Website URL',
         'code_label' => 'Code',
         'code_placeholder' => 'A unique code for this theme used for distribution',
+        'preview_label' => 'Preview',
+        'preview_placeholder' => 'The path of theme preview image.',
         'dir_name_label' => 'Directory name',
         'dir_name_create_label' => 'The destination theme directory',
         'theme_label' => 'Theme',
@@ -88,14 +90,14 @@ return [
         'dir_name_taken' => 'Desired theme directory already exists.',
         'find_more_themes' => 'Find more themes',
         'saving' => 'Saving theme...',
-        'return' => 'Return to themes list',
+        'return' => 'Return to themes list'
     ],
     'maintenance' => [
         'settings_menu' => 'Maintenance mode',
         'settings_menu_description' => 'Configure the maintenance mode page and toggle the setting.',
         'is_enabled' => 'Enable maintenance mode',
         'is_enabled_comment' => 'Select the page to show when maintenance mode is activated.',
-        'hint' => 'Maintenance mode will display the maintenance page to visitors who are not signed in to the back-end area.',
+        'hint' => 'Maintenance mode will display the maintenance page to visitors who are not signed in to the back-end area.'
     ],
     'page' => [
         'not_found_name' => "The page ':name' is not found",

modules/cms/lang/hu/lang.php

@@ -45,6 +45,8 @@ return [
         'homepage_placeholder' => 'A honlap webcíme',
         'code_label' => 'Kód',
         'code_placeholder' => 'Egyedi azonosító ehhez a témához',
+        'preview_label' => 'Előnézet',
+        'preview_placeholder' => 'A téma előnézeti képének elérési útvonala.',
         'dir_name_label' => 'Könyvtár',
         'dir_name_create_label' => 'A célkönyvtár',
         'theme_label' => 'Téma',