10 * Smarty {html_image} function plugin
13 * Name: html_input_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 * - 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 * - path_prefix = prefix for path output (optional, default empty)
24 * Examples: {html_input_image file="/images/masthead.gif"}
25 * Output: <input type="image" src="/images/masthead.gif" width=400 height=23>
26 * @link http://smarty.php.net/manual/en/language.function.html.input_image.php {html_input_image}
27 * (Smarty online manual)
28 * @author Monte Ohrt <monte at ohrt dot com>
29 * @author credits to Duda <duda@big.hu> - wrote first image function
30 * in repository, helped with lots of functionality
31 * @author Elan Ruusamäe <glen@delfi.ee>
36 * @uses smarty_function_escape_special_chars()
38 function smarty_function_html_input_image($params, &$smarty)
40 require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');
50 $server_vars = ($smarty->request_use_auto_globals) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
51 $basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';
52 foreach($params as $_key => $_val) {
64 if(!is_array($_val)) {
65 $$_key = smarty_function_escape_special_chars($_val);
67 $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
71 // FIXME: link/href makes no sense?
74 $prefix = '<a href="' . $_val . '">';
79 if(!is_array($_val)) {
80 $extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
82 $smarty->trigger_error("html_input_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
89 $smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);
93 if (substr($file,0,1) == '/') {
94 $_image_path = $basedir . $file;
99 if(!isset($params['width']) || !isset($params['height'])) {
100 if(!$_image_data = @getimagesize($_image_path)) {
101 if(!file_exists($_image_path)) {
102 $smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE);
104 } else if(!is_readable($_image_path)) {
105 $smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE);
108 $smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE);
112 if ($smarty->security &&
113 ($_params = array('resource_type' => 'file', 'resource_name' => $_image_path)) &&
114 (require_once(SMARTY_CORE_DIR . 'core.is_secure.php')) &&
115 (!smarty_core_is_secure($_params, $smarty)) ) {
116 $smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE);
119 if(!isset($params['width'])) {
120 $width = $_image_data[0];
122 if(!isset($params['height'])) {
123 $height = $_image_data[1];
128 if(isset($params['dpi'])) {
129 if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) {
134 $_resize = $dpi_default/$params['dpi'];
135 $width = round($width * $_resize);
136 $height = round($height * $_resize);
139 return $prefix . '<input type="image" src="'.$path_prefix.$file.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;
142 /* vim: set expandtab: */