source: extensions/gally/gally-default/themeconf.inc.php

<?php
/*
Theme Name: Gally
Version: auto
Description: Parent theme for all the Gally themes
Theme URI: http://piwigo.org/ext/extension_view.php?eid=382
Author: Grum
Author URI: http://www.grum.fr
*/

$themeconf = array(
  'theme' => 'gally-default',
  'icon_dir' => 'themes/gally-default/icon',
  'mime_icon_dir' => 'themes/gally-default/icon/mimetypes/',
  'activable' => false
);


if(!defined('IN_ADMIN')) add_event_handler('init', 'initTemplateVar');

/**
 * GallyTpl class is used to initialise some templates variable and provide some
 * usefull function in template
 */
class GallyTpl
{
  private $comment=array(
            'id' => null
          );

  public function __construct()
  {
    global $template, $themeconf;

    $this->loadConfDirectories();
    $this->loadThemeJS();

    $template->assign('gally', $this);
  }

  public function getToken()
  {
    return(get_pwg_token());
  }

  public function getCommentKey($id)
  {
    if($this->loadComment($id))
    {
      return(get_ephemeral_key(2, $this->comment['image_id']));
    }
    return('');
  }

  public function getCommentImage($id)
  {
    if($this->loadComment($id))
    {
      return($this->comment['image_id']);
    }
    return('');
  }

  public function getAlternateBannerContent()
  {
    global $template;

    return(html_entity_decode($template->smarty->get_config_vars('alternateBannerContent')));
  }

  public function getRandomBox($value)
  {
    global $template;

    if(is_numeric($value)) return(rand(-$value, $value));

    $v=$template->smarty->get_config_vars($value);
    return(rand(-$v, $v));
  }

  /**
   *
   */
  private function loadThemeJS()
  {
    global $template;

    $currentTheme=$template->get_template_vars('themeconf');
    $file="themes/".$currentTheme['id']."/js/theme.js";

    if(file_exists(dirname($_SERVER['SCRIPT_FILENAME']).'/'.$file))
    {
      $template->scriptLoader->add($currentTheme['id'].'.theme.js', 'header', array('jquery'), $file, 0);
    }
  }

  /**
   * load conf directories in smarty variables
   *  {$default_conf}
   *  {$local_conf}
   */
  private function loadConfDirectories()
  {
    global $template;

    $themes=$template->get_template_vars('themes');
    foreach($themes as $theme)
    {
      $dir=dirname($_SERVER['SCRIPT_FILENAME'])."/themes/".$theme['id']."/conf/";
      $dirlocal=dirname($_SERVER['SCRIPT_FILENAME'])."/".PWG_LOCAL_DIR."themes/".$theme['id']."/conf/";

      if(file_exists($dir."local.conf")) $template->smarty->config_load($dir."default.conf");
      if(file_exists($dirlocal."local.conf")) $template->smarty->config_load($dirlocal."local.conf");
    }
  }

  /**
   * load comment properties
   *  result is stored in $this->comment
   *
   * @param Integer $id: comment id
   */
  private function loadComment($id)
  {
    if($id==null or $id=='') return(false);
    if($id==$this->comment['id']) return(true);

    $sql="SELECT image_id FROM ".COMMENTS_TABLE." WHERE id=$id";
    $result=pwg_query($sql);
    if($result)
    {
      while($row=pwg_db_fetch_assoc($result))
      {
        $this->comment=array(
          'id' => $id,
          'image_id' => $row['image_id']
        );
        return(true);
      }
    }
    return(false);
  }
}



function initTemplateVar()
{
  $gallyVar=new GallyTpl();
}

?>