[Sommaire] [Imprimer]

   1  <?php
   2  /**

   3   * Smarty plugin

   4   * @package Smarty

   5   * @subpackage plugins

   6   */
   7  
   8  
   9  /**

  10   * Smarty {html_image} function plugin

  11   *

  12   * Type:     function<br>

  13   * Name:     html_image<br>

  14   * Date:     Feb 24, 2003<br>

  15   * Purpose:  format HTML tags for the image<br>

  16   * Input:<br>

  17   *         - file = file (and path) of image (required)

  18   *         - height = image height (optional, default actual height)

  19   *         - width = image width (optional, default actual width)

  20   *         - basedir = base directory for absolute paths, default

  21   *                     is environment variable DOCUMENT_ROOT

  22   *

  23   * Examples: {html_image file="images/masthead.gif"}

  24   * Output:   <img src="images/masthead.gif" width=400 height=23>

  25   * @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image}

  26   *      (Smarty online manual)

  27   * @author   Monte Ohrt <monte at ohrt dot com>

  28   * @author credits to Duda <duda@big.hu> - wrote first image function

  29   *           in repository, helped with lots of functionality

  30   * @version  1.0

  31   * @param array

  32   * @param Smarty

  33   * @return string

  34   * @uses smarty_function_escape_special_chars()

  35   */
  36  function smarty_function_html_image($params, &$smarty)
  37  {
  38      require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');
  39      
  40      $alt = '';
  41      $file = '';
  42      $height = '';
  43      $width = '';
  44      $extra = '';
  45      $prefix = '';
  46      $suffix = '';
  47      $server_vars = ($smarty->request_use_auto_globals) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
  48      $basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';
  49      foreach($params as $_key => $_val) {
  50          switch($_key) {
  51              case 'file':
  52              case 'height':
  53              case 'width':
  54              case 'dpi':
  55              case 'basedir':
  56                  $$_key = $_val;
  57                  break;
  58  
  59              case 'alt':
  60                  if(!is_array($_val)) {
  61                      $$_key = smarty_function_escape_special_chars($_val);
  62                  } else {
  63                      $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
  64                  }
  65                  break;
  66  
  67              case 'link':
  68              case 'href':
  69                  $prefix = '<a href="' . $_val . '">';
  70                  $suffix = '</a>';
  71                  break;
  72  
  73              default:
  74                  if(!is_array($_val)) {
  75                      $extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
  76                  } else {
  77                      $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
  78                  }
  79                  break;
  80          }
  81      }
  82  
  83      if (empty($file)) {
  84          $smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);
  85          return;
  86      }
  87  
  88      if (substr($file,0,1) == '/') {
  89          $_image_path = $basedir . $file;
  90      } else {
  91          $_image_path = $file;
  92      }
  93  
  94      if(!isset($params['width']) || !isset($params['height'])) {
  95          if ($smarty->security &&
  96              ($_params = array('resource_type' => 'file', 'resource_name' => $_image_path)) &&
  97              (require_once(SMARTY_CORE_DIR . 'core.is_secure.php')) &&
  98              (!smarty_core_is_secure($_params, $smarty)) ) {
  99              $smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE);
 100  
 101          } elseif (!$_image_data = @getimagesize($_image_path)) {
 102              if(!file_exists($_image_path)) {
 103                  $smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE);
 104                  return;
 105              } else if(!is_readable($_image_path)) {
 106                  $smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE);
 107                  return;
 108              } else {
 109                  $smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE);
 110                  return;
 111              }
 112          }
 113  
 114          if(!isset($params['width'])) {
 115              $width = $_image_data[0];
 116          }
 117          if(!isset($params['height'])) {
 118              $height = $_image_data[1];
 119          }
 120  
 121      }
 122  
 123      if(isset($params['dpi'])) {
 124          if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) {
 125              $dpi_default = 72;
 126          } else {
 127              $dpi_default = 96;
 128          }
 129          $_resize = $dpi_default/$params['dpi'];
 130          $width = round($width * $_resize);
 131          $height = round($height * $_resize);
 132      }
 133  
 134      return $prefix . '<img src="'.$file.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;
 135  }
 136  
 137  /* vim: set expandtab: */

 138  
 139  ?>