| 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 | ?> |