10 * Smarty {html_image} function plugin
13 * Name: html_image<br>
14 * Date: Feb 24, 2003<br>
15 * Purpose: format HTML tags for the image<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
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
35 * @uses smarty_function_escape_special_chars()
37 function smarty_function_html_image($params, &$smarty)
39 require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');
49 $server_vars = ($smarty->request_use_auto_globals
) ?
$_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
50 $basedir = isset($server_vars['DOCUMENT_ROOT']) ?
$server_vars['DOCUMENT_ROOT'] : '';
51 foreach($params as $_key => $_val) {
63 if(!is_array($_val)) {
64 $
$_key = smarty_function_escape_special_chars($_val);
66 $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE
);
72 $prefix = '<a href="' . $_val . '">';
77 if(!is_array($_val)) {
78 $extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
80 $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE
);
87 $smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE
);
91 if (substr($file,0,1) == '/') {
92 $_image_path = $basedir . $file;
97 if(!isset($params['width']) ||
!isset($params['height'])) {
98 if ($smarty->security
&&
99 ($_params = array('resource_type' => 'file', 'resource_name' => $_image_path)) &&
100 (require_once(SMARTY_DIR
. 'core' . DIRECTORY_SEPARATOR
. 'core.is_secure.php')) &&
101 (!smarty_core_is_secure($_params, $smarty)) ) {
102 $smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE
);
104 } elseif (!$_image_data = @getimagesize
($_image_path)) {
105 if(!file_exists($_image_path)) {
106 $smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE
);
108 } else if(!is_readable($_image_path)) {
109 $smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE
);
112 $smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE
);
117 if(!isset($params['width'])) {
118 $width = $_image_data[0];
120 if(!isset($params['height'])) {
121 $height = $_image_data[1];
126 if(isset($params['dpi'])) {
127 if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) {
132 $_resize = $dpi_default/$params['dpi'];
133 $width = round($width * $_resize);
134 $height = round($height * $_resize);
137 return $prefix . '<img src="'.$file.'" alt="'.$alt.'" border="'.$border.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;
140 /* vim: set expandtab: */