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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) | |
e586807d | 18 | * - height = image height (optional, default actual height) |
b42b2bf9 | 19 | * - width = image width (optional, default actual width) |
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20 | * - basedir = base directory for absolute paths, default |
21 | * is environment variable DOCUMENT_ROOT | |
22 | * | |
23 | * Examples: {html_image file="images/masthead.gif"} | |
b42b2bf9 | 24 | * Output: <img src="images/masthead.gif" width=400 height=23> |
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25 | * @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image} |
26 | * (Smarty online manual) | |
b42b2bf9 | 27 | * @author Monte Ohrt <monte at ohrt dot com> |
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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 = ''; | |
e586807d H |
42 | $height = ''; |
43 | $width = ''; | |
44 | $extra = ''; | |
45 | $prefix = ''; | |
46 | $suffix = ''; | |
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47 | $server_vars = ($smarty->request_use_auto_globals) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS']; |
48 | $basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : ''; | |
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49 | foreach($params as $_key => $_val) { |
50 | switch($_key) { | |
51 | case 'file': | |
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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($params['height'])) { | |
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95 | if ($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)) { | |
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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 | } | |
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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'])) { | |
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124 | if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) { |
125 | $dpi_default = 72; | |
126 | } else { | |
127 | $dpi_default = 96; | |
128 | } | |
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129 | $_resize = $dpi_default/$params['dpi']; |
130 | $width = round($width * $_resize); | |
131 | $height = round($height * $_resize); | |
132 | } | |
133 | ||
b42b2bf9 | 134 | return $prefix . '<img src="'.$file.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix; |
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135 | } |
136 | ||
137 | /* vim: set expandtab: */ | |
138 | ||
139 | ?> |