inc/smarty/node_methodz/function.html_image.php

   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  *         - border = border width (optional, default 0)
  19  *         - height = image height (optional, default actual height)
  20  *         - image =image width (optional, default actual width)
  21  *         - basedir = base directory for absolute paths, default
  22  *                     is environment variable DOCUMENT_ROOT
  23  *
  24  * Examples: {html_image file="images/masthead.gif"}
  25  * Output:   <img src="images/masthead.gif" border=0 width=400 height=23>
  26  * @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image}
  27  *      (Smarty online manual)
  28  * @author   Monte Ohrt <monte@ispi.net>
  29  * @author credits to Duda <duda@big.hu> - wrote first image function
  30  *           in repository, helped with lots of functionality
  31  * @version  1.0
  32  * @param array
  33  * @param Smarty
  34  * @return string
  35  * @uses smarty_function_escape_special_chars()
  36  */
  37 function smarty_function_html_image($params, &$smarty)
  38 {
  39     require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');
  40
  41     $alt = '';
  42     $file = '';
  43     $border = 0;
  44     $height = '';
  45     $width = '';
  46     $extra = '';
  47     $prefix = '';
  48     $suffix = '';
  49     $basedir = isset($GLOBALS['HTTP_SERVER_VARS']['DOCUMENT_ROOT'])
  50         ? $GLOBALS['HTTP_SERVER_VARS']['DOCUMENT_ROOT'] : '';
  51     if(strstr($GLOBALS['HTTP_SERVER_VARS']['HTTP_USER_AGENT'], 'Mac')) {
  52         $dpi_default = 72;
  53     } else {
  54         $dpi_default = 96;
  55     }
  56
  57     foreach($params as $_key => $_val) {
  58         switch($_key) {
  59             case 'file':
  60             case 'border':
  61             case 'height':
  62             case 'width':
  63             case 'dpi':
  64             case 'basedir':
  65                 $$_key = $_val;
  66                 break;
  67
  68             case 'alt':
  69                 if(!is_array($_val)) {
  70                     $$_key = smarty_function_escape_special_chars($_val);
  71                 } else {
  72                     $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
  73                 }
  74                 break;
  75
  76             case 'link':
  77             case 'href':
  78                 $prefix = '<a href="' . $_val . '">';
  79                 $suffix = '</a>';
  80                 break;
  81
  82             default:
  83                 if(!is_array($_val)) {
  84                     $extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
  85                 } else {
  86                     $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
  87                 }
  88                 break;
  89         }
  90     }
  91
  92     if (empty($file)) {
  93         $smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);
  94         return;
  95     }
  96
  97     if (substr($file,0,1) == '/') {
  98         $_image_path = $basedir . $file;
  99     } else {
 100         $_image_path = $file;
 101     }
 102
 103     if(!isset($params['width']) || !isset($params['height'])) {
 104         if(!$_image_data = @getimagesize($_image_path)) {
 105             if(!file_exists($_image_path)) {
 106                 $smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE);
 107                 return;
 108             } else if(!is_readable($_image_path)) {
 109                 $smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE);
 110                 return;
 111             } else {
 112                 $smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE);
 113                 return;
 114             }
 115         }
 116         $_params = array('resource_type' => 'file', 'resource_name' => $_image_path);
 117         require_once(SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR . 'core.is_secure.php');
 118         if(!$smarty->security && !smarty_core_is_secure($_params, $smarty)) {
 119             $smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE);
 120             return;
 121         }
 122
 123         if(!isset($params['width'])) {
 124             $width = $_image_data[0];
 125         }
 126         if(!isset($params['height'])) {
 127             $height = $_image_data[1];
 128         }
 129
 130     }
 131
 132     if(isset($params['dpi'])) {
 133         $_resize = $dpi_default/$params['dpi'];
 134         $width = round($width * $_resize);
 135         $height = round($height * $_resize);
 136     }
 137
 138     return $prefix . '<img src="'.$file.'" alt="'.$alt.'" border="'.$border.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;
 139 }
 140
 141 /* vim: set expandtab: */
 142
 143 ?>