class.ilChartDataPie.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once "Services/Chart/classes/class.ilChartData.php";

class ilChartDataPie extends ilChartData
{
        protected $line_width; // [int]
    protected $label_radius; //mixed
        
        protected function getTypeString()
        {
                return "pie";
        }
        
        public function setLineWidth($a_value)
        {
                $this->line_width = (int)$a_value;
        }

        public function getLineWidth()
        {
                return $this->line_width;
        }

    public function setLabelRadius($a_value)
    {
        $this->label_radius = $a_value;
    }

    public function getLabelRadius()
    {
        return $this->label_radius;
    }
        
        public function addPoint($a_value, $a_caption = null)
        {               
                $this->data[] = array($a_value, $a_caption);            
        }
                
        public function parseData(array &$a_data)
        {
                foreach($this->data as $slice)
                {
                        $series = new stdClass();
                        $series->label = str_replace("\"", "\\\"", $slice[1]);
                        
                        // add percentage to legend
                        if(!$this->getLabelRadius())
                        {
                                $series->label .= " (".$slice[0]."%)";
                        }
                        
                        $series->data = $slice[0];              

                        $options = array("show"=>($this->isHidden() ? false : true));
                        
                        $series->{$this->getTypeString()} = $options;

                        $a_data[] = $series;
                }
        }
        
        public function parseGlobalOptions(stdClass $a_options, ilChart $a_chart)
        {
                $a_options->series->pie = new stdClass();
                $a_options->series->pie->show = true;           
                                
                // fill vs. stroke - trying to normalize data attributes
                
                $fill = $this->getFill();
                $width = $this->getLineWidth();
                if($fill["fill"] || $width)
                {
                        $a_options->series->pie->stroke = new stdClass;                 
                        if($width)
                        {
                                $a_options->series->pie->stroke->width = $width;
                        }                       
                        if($fill["color"])
                        {
                                $a_options->series->pie->stroke->color = ilChart::renderColor($fill["color"], $fill["fill"]);
                        }
                }

                $radius = $this->getLabelRadius();
                if ($radius) 
                {
                        $a_options->series->pie->label = new stdClass;
                        $a_options->series->pie->label->background = new stdClass;
                        $a_options->series->pie->radius = 1;
                        $a_options->series->pie->label->radius = $radius;
                        $a_options->series->pie->label->show = true;
                        $a_options->series->pie->label->background->color = "#444";
                        $a_options->series->pie->label->background->opacity = 0.8;
                }               
        }
}

?>