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<?php |
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/** |
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* Smarty plugin |
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* @package Smarty |
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* @subpackage plugins |
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*/ |
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|
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|
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/** |
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* Smarty {html_image} function plugin |
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* |
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* Type: function<br> |
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* Name: html_image<br> |
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* Date: Feb 24, 2003<br> |
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* Purpose: format HTML tags for the image<br> |
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* Input:<br> |
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* - file = file (and path) of image (required) |
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* - border = border width (optional, default 0) |
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* - height = image height (optional, default actual height) |
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* - image =image width (optional, default actual width) |
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* - basedir = base directory for absolute paths, default |
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* is environment variable DOCUMENT_ROOT |
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* |
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* Examples: {html_image file="images/masthead.gif"} |
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* Output: <img src="images/masthead.gif" border=0 width=400 height=23> |
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* @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image} |
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* (Smarty online manual) |
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* @author Monte Ohrt <monte@ispi.net> |
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* @author credits to Duda <duda@big.hu> - wrote first image function |
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* in repository, helped with lots of functionality |
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* @version 1.0 |
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* @param array |
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* @param Smarty |
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* @return string |
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* @uses smarty_function_escape_special_chars() |
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*/ |
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function smarty_function_html_image($params, &$smarty) |
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{ |
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require_once $smarty->_get_plugin_filepath('shared','escape_special_chars'); |
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|
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$alt = ''; |
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$file = ''; |
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$border = 0; |
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$height = ''; |
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$width = ''; |
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$extra = ''; |
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$prefix = ''; |
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$suffix = ''; |
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$server_vars = ($smarty->request_use_auto_globals) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS']; |
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$basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : ''; |
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foreach($params as $_key => $_val) { |
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switch($_key) { |
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case 'file': |
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case 'border': |
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case 'height': |
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case 'width': |
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case 'dpi': |
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case 'basedir': |
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$$_key = $_val; |
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break; |
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|
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case 'alt': |
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if(!is_array($_val)) { |
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$$_key = smarty_function_escape_special_chars($_val); |
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} else { |
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$smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE); |
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} |
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break; |
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|
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case 'link': |
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case 'href': |
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$prefix = '<a href="' . $_val . '">'; |
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$suffix = '</a>'; |
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break; |
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|
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default: |
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if(!is_array($_val)) { |
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$extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"'; |
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} else { |
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$smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE); |
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} |
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break; |
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} |
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} |
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|
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if (empty($file)) { |
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$smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE); |
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return; |
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} |
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|
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if (substr($file,0,1) == '/') { |
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$_image_path = $basedir . $file; |
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} else { |
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$_image_path = $file; |
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} |
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|
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if(!isset($params['width']) || !isset($params['height'])) { |
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if ($smarty->security && |
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($_params = array('resource_type' => 'file', 'resource_name' => $_image_path)) && |
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(require_once(SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR . 'core.is_secure.php')) && |
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(!smarty_core_is_secure($_params, $smarty)) ) { |
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$smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE); |
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|
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} elseif (!$_image_data = @getimagesize($_image_path)) { |
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if(!file_exists($_image_path)) { |
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$smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE); |
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return; |
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} else if(!is_readable($_image_path)) { |
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$smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE); |
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return; |
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} else { |
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$smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE); |
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return; |
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} |
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} |
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|
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if(!isset($params['width'])) { |
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$width = $_image_data[0]; |
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} |
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if(!isset($params['height'])) { |
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$height = $_image_data[1]; |
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} |
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|
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} |
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|
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if(isset($params['dpi'])) { |
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if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) { |
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$dpi_default = 72; |
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} else { |
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$dpi_default = 96; |
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} |
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$_resize = $dpi_default/$params['dpi']; |
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$width = round($width * $_resize); |
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$height = round($height * $_resize); |
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} |
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|
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return $prefix . '<img src="'.$file.'" alt="'.$alt.'" border="'.$border.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix; |
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} |
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|
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/* vim: set expandtab: */ |
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|
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?> |
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