New features:

* _google_charts_chart() will set all chart-level data
* _google_charts_series() will set all series-level data
* _google_charts_values() will set all value-level data

Misc:
* Google Chart now uses the new chart data schema

google_charts/google_charts.inc

@@ -18,40 +18,93 @@
  *
  * @param $data
  *   Array. A series of numeric data values
+ * @return
+ *   String. The string presentation of series data
  */
-function _google_charts_data_codingsimple($data) {
+function _google_charts_data_codingsimple($value, $max) {
   // Set the list of characters and the size of the list
   $simple = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
   $simple_len = strlen($simple) - 1;
 
+  if ($value >= 0) {
+    return $simple[round($simple_len * $value / $max)];
+  }
+  else {
+    return  '_';
+  }
+}
+
+function _google_charts_chart(&$chart, &$data) {
+  // Convert the chat TYPE into the Google Chart way.
+  // Since its a requirement to build the chart on Google, if the value
+  // was not found, return nothing and stop the execution.
+  $options = array(
+    'line2D'  => 'lc',
+    'hbar2D'  => 'bhg',
+    'vbar2D'  => 'bvg',
+    'pie2D'   => 'p',
+    'pie3D'   => 'p3',
+    'venn'    => 'v',
+    'scatter' => 's',
+  );
+  if (empty($options[$data['#type']])) {
+    return FALSE;
+  }
+  $chart[] = 'cht='. $options[$data['#type']];
+
+  // Convert the chat SIZE into the Google Chart way.
+  // Since its a requirement to build the chart on Google, if the value
+  // was not found, return nothing and stop the execution.
+  if (empty($data['#width']) or empty($data['#height'])) {
+    return FALSE;
+  }
+  $chart[] = 'chs='. $data['#width'] .'x'. $data['#height'];
+
+  // Add Title and Description to the chart
+  if (!empty($data['#title'])) {
+    $chart[] = 'chtt='. $data['#title'];
+  }
+
+  // Chart background color. Since the default color
+  // is white (#ffffff), only different colors are considered
+  if (!empty($data['#color']) and $data['#color'] != 'ffffff') {
+    $chart[] = 'chf=bg,s,'. $data['#color'];
+  }
+
+  return TRUE;
+}
+
+function _google_charts_series(&$chart, &$data) {
   // The final output is going to be build
   $chart_data = '';
 
   // For each chart value, encode it
   // Note: Underscore represents a missing value
-  foreach ($data as $series) {
+  foreach (element_children($data) as $series) {
     // Include a series separator
     if (!empty($chart_data)) {
-      $chart_data .= '|';
+      $chart_data .= ',';
     }
 
+    // Get only the numeric values from the series
+    $series = _charts_series_values($data[$series]);
+
     // Get the highest value on the series, to be a reference point
     $max = max($series);
 
     // For each series of data, scan it
-    foreach ($series as $value) {
-      if ($value >= 0) {
-        $chart_data .= $simple[round($simple_len * $value / $max)];
-      }
-      else {
-        $chart_data .= '_';
-      }
+    foreach (element_children($series) as $value) {
+        $chart_data .= _google_charts_data_codingsimple($series[$value], $max);
     }
   }
 
   // Return the series of data
-  return 's:'. $chart_data;
+  if (empty($chart_data)) {
+    return FALSE;
+  }
+  $chart[] = 'chd=s:'. $chart_data;
+  return TRUE;
 }
 
-function _google_charts_data_codingextended() {
+function _google_charts_values() {
 }

google_charts/google_charts.module

@@ -45,40 +45,17 @@ function google_charts_chartsapi(&$data) {
   // Include the specific Google Chart API helper functions
   include_once drupal_get_path('module', 'google_charts') .'/google_charts.inc';
 
-  // Convert the chat TYPE into the Google Chart way.
-  // Since its a requirement to build the chart on Google, if the value
-  // was not found, return nothing and stop the execution.
-  $options = array(
-    'line2D'  => 'lc',
-    'hbar2D'  => 'bhg',
-    'vbar2D'  => 'bvg',
-    'pie2D'   => 'p',
-    'pie3D'   => 'p3',
-    'venn'    => 'v',
-    'scatter' => 's',
-  );
-  if (empty($options[$data['basic']['charttype']])) {
+  $chart = array();
+  if (!_google_charts_chart($chart, $data)) {
     return '';
   }
-  $chart[] = 'cht='. $options[$data['basic']['charttype']];
-
-
-  // Convert the chat SIZE into the Google Chart way.
-  // Since its a requirement to build the chart on Google, if the value
-  // was not found, return nothing and stop the execution.
-  if (empty($data['layout']['width']) or empty($data['layout']['height'])) {
-    return '';
-  }
-  $chart[] = 'chs='. $data['layout']['width'] .'x'. $data['layout']['height'];
-
 
   // Convert the chat DATA into the Google Chart way.
   // Since its a requirement to build the chart on Google, if the value
   // was not found, return nothing and stop the execution.
-  if (empty($data['data'])) {
+  if (!_google_charts_series($chart, $data)) {
     return '';
   }
-  $chart[] = 'chd='. _google_charts_data_codingsimple($data['data']);
 
   // If its all ok, build the HTML img tag
   return '<img src="http://chart.apis.google.com/chart?'. implode('&amp;', $chart) .'" />';