/**
* Builds pie graph
*/
function buildGraph()
{
$this->graph = new Chart_Pie($this->width, $this->height);
// title setup
$this->graph->title->Set($this->title);
if (is_null($this->description)) {
$this->description = "";
}
$this->graph->subtitle->Set($this->description);
if (is_array($this->data) && array_sum($this->data) > 0) {
$p = new PiePlot($this->data);
$p->setSliceColors($this->graph->getThemedColors());
$p->SetCenter(0.4, 0.6);
$p->SetLegends($this->legend);
$p->value->HideZero();
$p->value->SetFont($this->graph->getFont(), FS_NORMAL, 8);
$p->value->SetColor($this->graph->getMainColor());
$p->value->SetMargin(0);
$this->graph->Add($p);
}
return $this->graph;
}
