/**
* @param Chart $chart
*/
private function writeChartStyle(Chart $chart)
{
// style:style
$this->xmlContent->startElement('style:style');
$this->xmlContent->writeAttribute('style:name', 'styleChart');
$this->xmlContent->writeAttribute('style:family', 'chart');
// style:graphic-properties
$this->xmlContent->startElement('style:graphic-properties');
$this->xmlContent->writeAttribute('draw:stroke', $chart->getFill()->getFillType());
$this->xmlContent->writeAttribute('draw:fill-color', '#' . $chart->getFill()->getStartColor()->getRGB());
// > style:graphic-properties
$this->xmlContent->endElement();
// > style:style
$this->xmlContent->endElement();
}