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File: web-app/lib/SMARTY/plugins/function.html_image.php

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  Classes of davifelipe  >  smart MVC  >  web-app/lib/SMARTY/plugins/function.html_image.php  >  Download  
File: web-app/lib/SMARTY/plugins/function.html_image.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: smart MVC
MVC framework using Smarty to render views
Author: By
Last change:
Date: 3 years ago
Size: 4,783 bytes
 

Contents

Class file image Download
<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty {html_image} function plugin
 *
 * Type: function<br>
 * Name: html_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_image file="/images/masthead.gif"}
 * Output: <img src="/images/masthead.gif" width=400 height=23>
 * @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image}
 * (Smarty online manual)
 * @author Monte Ohrt <monte at ohrt dot com>
 * @author credits to Duda <duda@big.hu> - wrote first image function
 * in repository, helped with lots of functionality
 * @version 1.0
 * @param array
 * @param Smarty
 * @return string
 * @uses smarty_function_escape_special_chars()
 */
function smarty_function_html_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;

            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 {
                   
$smarty->trigger_error("html_image: extra attribute '$_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
$prefix . '<img src="'.$path_prefix.$file.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;
}

/* vim: set expandtab: */

?>