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e586807d H |
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 | ?> |