Made the thumb.php script serve thumbs of the view layouts, and added an...

Made the thumb.php script serve thumbs of the view layouts, and added an example image that shows the naming scheme.

htdocs/theme/default/templates/view/layout.tpl

@@ -10,7 +10,7 @@
 
         {foreach from=$options key=id item=description}
         <div class="fl" style="margin: 0 .5em; text-align: center;">
-            <div><img src="/thumb.php?type=blocktype&bt=test" alt=""></div>
+            <div><img src="/thumb.php?type=viewlayout&vl={$id}" alt=""></div>
             <div><input type="radio" class="radio" name="layout" value="{$id}"></div>
             <div>{$description|escape}</div>
         </div>

htdocs/thumb.php

@@ -90,6 +90,15 @@ switch ($type) {
         }
         readfile(theme_get_path('images/no_thumbnail.png'));
         break;
+    case 'viewlayout':
+        header('Content-type: image/png');
+        $vl = param_integer('vl');
+        if ($widths = get_field('view_layout', 'widths', 'id', $vl)) {
+            $path = theme_get_path('images/vl-' . str_replace(',', '-', $widths) . '.png');
+            readfile($path);
+        }
+        readfile(theme_get_path('images/no_thumbnail.png'));
+        break;
 }
 
 ?>