1 files changed, 150 insertions, 0 deletions
diff --git a/modules/Visualization/Cloud.php b/modules/Visualization/Cloud.php
new file mode 100644
index 0000000000..efbed67cb0
--- /dev/null
+++ b/modules/Visualization/Cloud.php
@@ -0,0 +1,150 @@
+<?php
+// inspired from Derek Harvey (www.derekharvey.co.uk)
+class Piwik_Visualization_Cloud 
+{
+	protected $wordsArray = array();
+    public $truncatingLimit = 30;
+   /**
+    * @param array array( word => 10, word2 => 50, word3 => 1)
+    */
+    function __construct($words = false)
+    {
+        if ($words !== false && is_array($words))
+        {
+            foreach ($words as $word => $value)
+            {
+                $this->addWord($word, $value);
+            }
+        }
+    }
+   
+    /*
+    * Assign word to array
+    *
+    * @param string $word
+    * @return string
+    */   
+    function addWord($word, $value = 1)
+    {
+//        $word = strtolower($word);
+        if (isset($this->wordsArray[$word]))
+    	{
+            $this->wordsArray[$word] += $value;
+    	}
+    	else
+        {
+        	$this->wordsArray[$word] = $value;
+        }
+    }
+   
+    /*
+    * Shuffle associated names in array
+    */   
+    function shuffleCloud()
+    {
+        $keys = array_keys($this->wordsArray);
+       
+        shuffle($keys);
+       
+        if (count($keys) && is_array($keys))
+        {
+            $tmpArray = $this->wordsArray;
+            $this->wordsArray = array();
+            foreach ($keys as $key => $value)
+                $this->wordsArray[$value] = $tmpArray[$value];
+        }
+    }
+   
+    /*
+    * Calculate size of words array
+    */
+   
+    function getCloudSize()
+    {
+        return array_sum($this->wordsArray);
+    }
+   
+    /*
+    * Get the class range using a percentage
+    *
+    * @returns int $class
+    */
+   
+    function getClassFromPercent($percent)
+    {
+    	$mapping = array( 
+    		95, 
+    		70,
+    		50,
+    		30,
+    		15,
+    		5,
+    		0
+    	);
+        foreach($mapping as $key => $value)
+        {
+        	if($percent >= $value)
+        	{
+        		return $key;
+        	}
+        }
+    }
+   
+    /*
+    * Create the HTML code for each word and apply font size.
+    *
+    * @returns string $spans
+    */
+   
+    function render($returnType = "html")
+    {
+        $this->shuffleCloud();
+        
+        if($returnType == "html")
+        {
+	        $return = '';
+        }
+        else
+        {
+        	$return = array();
+        }
+		
+        if (count($this->wordsArray) > 0)
+        {        
+        	$this->max = max($this->wordsArray);
+        
+            $return = ($returnType == "html" ? "" : ($returnType == "array" ? array() : ""));
+            foreach ($this->wordsArray as $word => $popularity)
+            {
+            	
+            	// truncating the word
+            	$wordTruncated = $word;
+            	if(strlen($word) > $this->truncatingLimit)
+            	{
+	            	$wordTruncated = substr($word, 0, $this->truncatingLimit - 3).'...';
+            	}
+            	
+            	// computing the percentage
+            	$percent = ($popularity / $this->max) * 100;
+                
+                // and the CSS style value
+                $sizeRange = $this->getClassFromPercent($percent);
+                                
+                if ($returnType == "array")
+                {
+	                $return[$word]['word'] = $word;
+    	            $return[$word]['wordTruncated'] = $wordTruncated;
+        	        $return[$word]['size'] = $sizeRange;
+        	        $return[$word]['percent'] = $percent;
+                }
+                else if ($returnType == "html")
+                {
+                    $return .= "\n<span title='".$word."' class='word size{$sizeRange}'> &nbsp; {$wordTruncated} &nbsp; </span>";
+                }
+//            	print( $word ."=".$percent."<br>");
+            }
+        }
+        return $return;
+    }
+}
+