class.typo3logo.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2007-2011 Ingo Renner <ingo@typo3.org>
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/


/**
 * class to render the TYPO3 logo in the backend
 *
 * $Id: class.typo3logo.php 10121 2011-01-18 20:15:30Z ohader $
 *
 * @author  Ingo Renner <ingo@typo3.org>
 * @package TYPO3
 * @subpackage core
 */
class TYPO3Logo {

    protected $logo;

    /**
     * constructor
     *
     * @return void
     */
    public function __construct() {
        $this->logo = null;
    }

    /**
     * renders the actual logo code
     *
     * @return  string  logo html code snippet to use in the backend
     */
    public function render() {

        $logoFile = 'gfx/alt_backend_logo.gif'; // default
        if(is_string($this->logo)) {
                // overwrite
            $logoFile = $this->logo;
        }
        $imgInfo = getimagesize(PATH_site . TYPO3_mainDir . $logoFile);


        $logo = '<a href="http://www.typo3.com/" target="_blank">'.
                '<img'.t3lib_iconWorks::skinImg('', $logoFile, $imgInfo[3]).' title="TYPO3 Content Management System" alt="" />'.
                '</a>';

            // overwrite with custom logo
        if($GLOBALS['TBE_STYLES']['logo'])  {
            $imgInfo = @getimagesize(t3lib_div::resolveBackPath(PATH_typo3 . $GLOBALS['TBE_STYLES']['logo'], 3));
            $logo = '<a href="http://www.typo3.com/" target="_blank">' .
                '<img src="' . $GLOBALS['TBE_STYLES']['logo'] . '" ' . $imgInfo[3] . ' title="TYPO3 Content Management System" alt="" />' .
                '</a>';
        }

        return $logo;
    }

    /**
     * sets the logo
     *
     * @param   string      path to logo file as seen from typo3/
     */
    public function setLogo($logo) {
        if(!is_string($logo)) {
            throw new InvalidArgumentException('parameter $logo must be of type string', 1194041104);
        }

        $this->logo = $logo;
    }

}


if (defined('TYPO3_MODE') && isset($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['typo3/classes/class.typo3logo.php'])) {
    include_once($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['typo3/classes/class.typo3logo.php']);
}

?>