Io sto usando con soddisfazione una modifica del modulo originale. L'unico limite è che se ci sono thumbnails nella casualità della selezione potrebbe capitare che vengano visualizzate (se invece ci sono delle descrizioni al loro posto viene restituito un messaggio di errore...).
Di seguito posto il codice (parte del modulo originale è commentata in quanto sostituita) da salvare in helper.php e collocarlo in /modules/mod_random_image così magari qualcuno che sappia come fare aggiunge le regole per escludere le cartelle thumbnails e descriptions...
<?php
/**
* @version $Id: helper.php 10043 2008-02-16 21:50:49Z ian $
* @package Joomla
* @copyright Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );
class modRandomImageHelper
{
function getRandomImage(&$params, $images)
{
$width = $params->get( 'width' );
$height = $params->get( 'height' );
$i = count($images);
$random = mt_rand(0, $i - 1);
$image = $images[$random];
$size = getimagesize (JPATH_BASE.DS.$image->folder .DS. $image->name);
if ($width == '') {
$width = 100;
}
if ($size[0] < $width) {
$width = $size[0];
}
$coeff = $size[0]/$size[1];
if ($height == '') {
$height = (int) ($width/$coeff);
} else {
$newheight = min ($height, (int) ($width/$coeff));
if ($newheight < $height) {
$height = $newheight;
} else {
$width = $height * $coeff;
}
}
$image->width = $width;
$image->height = $height;
$image->folder = str_replace( '\\', '/', $image->folder );
return $image;
}
function getImages(&$params, $folder)
{
$type = $params->get( 'type', 'jpg' );
//$files = array();
$images = array();
//$dir = JPATH_BASE.DS.$folder;
// check if directory exists
if (is_dir($folder))
{
/*if ($handle = opendir($dir)) {
while (false !== ($file = readdir($handle))) {
if ($file != '.' && $file != '..' && $file != 'CVS' && $file != 'index.html' ) {
$files[] = $file;
}
}
}
closedir($handle);
$i = 0;
foreach ($files as $img)
{
if (!is_dir($dir .DS. $img))
{
if (eregi($type, $img)) {
$images[$i]->name = $img;
$images[$i]->folder = $folder;
++$i;
}
}
}*/
$images=modRandomImageHelper::getAllFile($folder,$type);
}
return $images;
}
//nuova funzione per l'elenco dei file by Alphagamma
function getAllFile($folder,$type) {
$queue=array();
$files=array();
$queue[]=$folder;
while (count($queue)) {
if ($handle = opendir($queue[0])) {
while (false !== ($file = readdir($handle))) {
if ($file != '.' && $file != '..' && $file != 'CVS' && $file != 'index.html' ) {
if (is_dir($queue[0]."/".$file)) {
$queue[]=$queue[0]."/".$file;
} else {
if (eregi($type, $file)) {
$last=count($files);
$files[$last]->name = $file;
$files[$last]->folder = $queue[0];
}
}
}
}
}
closedir($handle);
array_shift($queue);
}
return $files;
}
function getFolder(&$params)
{
$folder = $params->get( 'folder' );
$LiveSite = JURI::base();
// if folder includes livesite info, remove
if ( JString::strpos($folder, $LiveSite) === 0 ) {
$folder = str_replace( $LiveSite, '', $folder );
}
// if folder includes absolute path, remove
if ( JString::strpos($folder, JPATH_SITE) === 0 ) {
$folder= str_replace( JPATH_BASE, '', $folder );
}
$folder = str_replace('\\',DS,$folder);
$folder = str_replace('/',DS,$folder);
return $folder;
}
}