--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/tagcloud.php	Wed Aug 01 13:39:27 2007 -0400
@@ -0,0 +1,153 @@
+<?php
+
+/*
+ * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
+ * Version 1.0.1 (Loch Ness)
+ * Copyright (C) 2006-2007 Dan Fuhry
+ *
+ * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ */
+
+/**
+ * Class for formatting and displaying tag clouds. Loosely based the reference cloud engine from <http://www.lotsofcode.com/php/tutorials/tag-cloud>.
+ * @package Enano
+ * @subpackage Presentation/UI
+ * @copyright (C) 2007 Dan Fuhry
+ * @license GNU General Public License, version 2 or at your option any later versionc
+ */
+
+class TagCloud
+{
+  
+  /**
+   * The list of words in the cloud.
+   * @var array
+   */
+  
+  var $words = array();
+  
+  /**
+   * Constructor.
+   * @param array Optional. An initial list of words, just a plain old array.
+   */
+  
+  function __construct($words)
+  {
+    if ( count($words) > 0 )
+    {
+      foreach ( $words as $word )
+        $this->add_word($word);
+    }
+  }
+  
+  /**
+   * Adds a word into the word list.
+   * @param string The word to add
+   */
+  
+  function add_word($word)
+  {
+    $word = strtolower($word);
+    
+    if ( isset($this->words[$word]) )
+      $this->words[$word] += 1;
+    else
+      $this->words[$word] = 1;
+  }
+  
+  /**
+   * Returns the total size of the cloud.
+   * @return int
+   */
+  
+  function get_cloud_size()
+  {
+    return array_sum($this->words);
+  }
+  
+  /**
+   * Shuffles the cloud.
+   */
+  
+  function shuffle_cloud()
+  {
+    $keys = array_keys($this->words);
+    if ( !$keys || empty($keys) || !is_array($keys) )
+      return null;
+    
+    shuffle($keys);
+    if ( !$keys || empty($keys) || !is_array($keys) )
+      return null;
+    
+    $temp = $this->words;
+    $this->words = array();
+    foreach ( $keys as $word )
+    {
+      $this->words[$word] = $temp[$word];
+    }
+    
+    unset($temp);
+  }
+  
+  /**
+   * Returns the popularity index (scale class) for a 1-100 number.
+   * @param int
+   * @return int
+   */
+  
+  function get_scale_class($val)
+  {
+    $ret = 0;
+    if ( $val >= 99 )
+      $ret = 1;
+    else if ( $val >= 70 )
+      $ret = 2;
+    else if ( $val >= 60 )
+      $ret = 3;
+    else if ( $val >= 50 )
+      $ret = 4;
+    else if ( $val >= 40 )
+      $ret = 5;
+    else if ( $val >= 30 )
+      $ret = 6;
+    else if ( $val >= 20 )
+      $ret = 7;
+    else if ( $val >= 10 )
+      $ret = 8;
+    else if ( $val >= 5 )
+      $ret = 9;
+    return $ret;
+  }
+  
+  /**
+   * Generates and returns HTML for the cloud.
+   * @return string
+   */
+   
+  function make_html()
+  {
+    $html = array();
+    $max  = max($this->words);
+    $size = $this->get_cloud_size();
+    if ( count($this->words) > 0 )
+    {
+      foreach ( $this->words as $word => $popularity )
+      {
+        $word = htmlspecialchars($word);
+        $percent = ( $popularity / $max ) * 100;
+        $index = $this->get_scale_class($percent);
+        $html[] = "<span class='tc_word tc_index_$index'>$word</span>";
+      }
+    }
+    $html = implode("\n", $html);
+    return $html;
+  }
+   
+  
+}
+
+?>