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   1  <?php
   2  /**
   3  * @version        $Id: helper.php 14401 2010-01-26 14:10:00Z louis $
   4  * @package        Joomla
   5  * @copyright    Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
   6  * @license        GNU/GPL, see LICENSE.php
   7  * Joomla! is free software. This version may have been modified pursuant
   8  * to the GNU General Public License, and as distributed it includes or
   9  * is derivative of works licensed under the GNU General Public License or
  10  * other free or open source software licenses.
  11  * See COPYRIGHT.php for copyright notices and details.
  12  */
  13  
  14  // no direct access
  15  defined( '_JEXEC' ) or die( 'Restricted access' );
  16  
  17  
  18  class modRandomImageHelper
  19  {
  20  	function getRandomImage(&$params, $images)
  21      {
  22          $width         = $params->get( 'width' );
  23          $height     = $params->get( 'height' );
  24  
  25          $i                 = count($images);
  26          $random         = mt_rand(0, $i - 1);
  27          $image             = $images[$random];
  28          $size             = getimagesize (JPATH_BASE.DS.$image->folder .DS. $image->name);
  29  
  30  
  31          if ($width == '') {
  32              $width = 100;
  33          }
  34  
  35          if ($size[0] < $width) {
  36              $width = $size[0];
  37          }
  38  
  39          $coeff = $size[0]/$size[1];
  40          if ($height == '') {
  41              $height = (int) ($width/$coeff);
  42          } else {
  43              $newheight = min ($height, (int) ($width/$coeff));
  44              if ($newheight < $height) {
  45                  $height = $newheight;
  46              } else {
  47                  $width = $height * $coeff;
  48              }
  49          }
  50  
  51          $image->width     = $width;
  52          $image->height    = $height;
  53          $image->folder    = str_replace( '\\', '/', $image->folder );
  54  
  55          return $image;
  56      }
  57  
  58  	function getImages(&$params, $folder)
  59      {
  60          $type         = $params->get( 'type', 'jpg' );
  61  
  62          $files    = array();
  63          $images    = array();
  64  
  65          $dir = JPATH_BASE.DS.$folder;
  66  
  67          // check if directory exists
  68          if (is_dir($dir))
  69          {
  70              if ($handle = opendir($dir)) {
  71                  while (false !== ($file = readdir($handle))) {
  72                      if ($file != '.' && $file != '..' && $file != 'CVS' && $file != 'index.html' ) {
  73                          $files[] = $file;
  74                      }
  75                  }
  76              }
  77              closedir($handle);
  78  
  79              $i = 0;
  80              foreach ($files as $img)
  81              {
  82                  if (!is_dir($dir .DS. $img))
  83                  {
  84                      if (preg_match("#$type#i", $img)) {
  85                          $images[$i]->name     = $img;
  86                          $images[$i]->folder    = $folder;
  87                          ++$i;
  88                      }
  89                  }
  90              }
  91          }
  92  
  93          return $images;
  94      }
  95  
  96  	function getFolder(&$params)
  97      {
  98          $folder     = $params->get( 'folder' );
  99  
 100          $LiveSite     = JURI::base();
 101  
 102          // if folder includes livesite info, remove
 103          if ( JString::strpos($folder, $LiveSite) === 0 ) {
 104              $folder = str_replace( $LiveSite, '', $folder );
 105          }
 106          // if folder includes absolute path, remove
 107          if ( JString::strpos($folder, JPATH_SITE) === 0 ) {
 108              $folder= str_replace( JPATH_BASE, '', $folder );
 109          }
 110          $folder = str_replace('\\',DS,$folder);
 111          $folder = str_replace('/',DS,$folder);
 112  
 113          return $folder;
 114      }
 115  }
 116