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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
* @version $Id$
*
* @category Piwik
* @package Piwik
*/
/**
* Customize & set values for the Flash Pie chart
*
* @package Piwik
* @subpackage Piwik_Visualization
*/
class Piwik_Visualization_Chart_Pie extends Piwik_Visualization_Chart
{
protected $seriesColors = array('#59727F', '#7DAAC0', '#7F7259', '#C09E7D', '#9BB39B',
'#B1D8B3', '#B39BA7', '#D8B1C5', '#A5A5A5');
function customizeChartProperties()
{
if (count($this->data) == 0)
{
return;
}
// make sure we only have one series
$series = &$this->series[0];
$this->series = array(&$series);
$data = &$this->data[0];
$this->data = array(&$data);
// we never plot empty pie slices (eg. visits by server time pie chart)
foreach ($data as $i => $value)
{
if ($value <= 0)
{
unset($data[$i]);
unset($this->axes['xaxis']['ticks'][$i]);
}
}
$data = array_values($data);
$this->axes['xaxis']['ticks'] = array_values($this->axes['xaxis']['ticks']);
// prepare percentages for tooltip
$sum = array_sum($data);
foreach ($data as $i => $value)
{
$value = (float) $value;
$this->tooltip['percentages'][0][$i] = round(100 * $value / $sum);
}
}
}
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