SOURCES: Smarty-function.html_input_image.php (NEW) - like html_im...

[glen]

Author: glen                         Date: Thu May 18 15:48:30 2006 GMT
Module: SOURCES                       Tag: HEAD
---- Log message:
- like html_image but producing <input type=image> tags

---- Files affected:
SOURCES:
   Smarty-function.html_input_image.php (NONE -> 1.1)  (NEW)

---- Diffs:

================================================================
Index: SOURCES/Smarty-function.html_input_image.php
diff -u /dev/null SOURCES/Smarty-function.html_input_image.php:1.1
--- /dev/null	Thu May 18 17:48:30 2006
+++ SOURCES/Smarty-function.html_input_image.php	Thu May 18 17:48:25 2006
@@ -0,0 +1,144 @@
+<?php
+/**
+ * Smarty plugin
+ * @package Smarty
+ * @subpackage plugins
+ */
+
+
+/**
+ * Smarty {html_image} function plugin
+ *
+ * Type:     function<br>
+ * Name:     html_input_image<br>
+ * Date:     Feb 24, 2003<br>
+ * Purpose:  format HTML tags for the image<br>
+ * Input:<br>
+ *         - file = file (and path) of image (required)
+ *         - height = image height (optional, default actual height)
+ *         - width = image width (optional, default actual width)
+ *         - basedir = base directory for absolute paths, default
+ *                     is environment variable DOCUMENT_ROOT
+ *         - path_prefix = prefix for path output (optional, default empty)
+ *
+ * Examples: {html_input_image file="/images/masthead.gif"}
+ * Output:   <input type="image" src="/images/masthead.gif" width=400 height=23>
+ * @link http://smarty.php.net/manual/en/language.function.html.input_image.php {html_input_image}
+ *      (Smarty online manual)
+ * @author   Monte Ohrt <monte at ohrt dot com>
+ * @author credits to Duda <duda at big.hu> - wrote first image function
+ *           in repository, helped with lots of functionality
+ * @author   Elan Ruusamäe <glen at delfi.ee>
+ * @version  1.0
+ * @param array
+ * @param Smarty
+ * @return string
+ * @uses smarty_function_escape_special_chars()
+ */
+function smarty_function_html_input_image($params, &$smarty)
+{
+    require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');
+    
+    $alt = '';
+    $file = '';
+    $height = '';
+    $width = '';
+    $extra = '';
+    $prefix = '';
+    $suffix = '';
+    $path_prefix = '';
+    $server_vars = ($smarty->request_use_auto_globals) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
+    $basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';
+    foreach($params as $_key => $_val) {
+        switch($_key) {
+            case 'file':
+            case 'height':
+            case 'width':
+            case 'dpi':
+            case 'path_prefix':
+            case 'basedir':
+                $$_key = $_val;
+                break;
+
+            case 'alt':
+                if(!is_array($_val)) {
+                    $$_key = smarty_function_escape_special_chars($_val);
+                } else {
+                    $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
+                }
+                break;
+
+                // FIXME: link/href makes no sense?
+            case 'link':
+            case 'href':
+                $prefix = '<a href="' . $_val . '">';
+                $suffix = '</a>';
+                break;
+
+            default:
+                if(!is_array($_val)) {
+                    $extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
+                } else {
+                    $smarty->trigger_error("html_input_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
+                }
+                break;
+        }
+    }
+
+    if (empty($file)) {
+        $smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);
+        return;
+    }
+
+    if (substr($file,0,1) == '/') {
+        $_image_path = $basedir . $file;
+    } else {
+        $_image_path = $file;
+    }
+    
+    if(!isset($params['width']) || !isset($params['height'])) {
+        if(!$_image_data = @getimagesize($_image_path)) {
+            if(!file_exists($_image_path)) {
+                $smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE);
+                return;
+            } else if(!is_readable($_image_path)) {
+                $smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE);
+                return;
+            } else {
+                $smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE);
+                return;
+            }
+        }
+        if ($smarty->security &&
+            ($_params = array('resource_type' => 'file', 'resource_name' => $_image_path)) &&
+            (require_once(SMARTY_CORE_DIR . 'core.is_secure.php')) &&
+            (!smarty_core_is_secure($_params, $smarty)) ) {
+            $smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE);
+        }        
+        
+        if(!isset($params['width'])) {
+            $width = $_image_data[0];
+        }
+        if(!isset($params['height'])) {
+            $height = $_image_data[1];
+        }
+
+    }
+
+    if(isset($params['dpi'])) {
+        if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) {
+            $dpi_default = 72;
+        } else {
+            $dpi_default = 96;
+        }
+        $_resize = $dpi_default/$params['dpi'];
+        $width = round($width * $_resize);
+        $height = round($height * $_resize);
+    }
+
+    return $prefix . '<input type="image" src="'.$path_prefix.$file.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;
+}
+
+/* vim: set expandtab: */
+
+?>
================================================================