class.ilChartDataSpider.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 ilChartDataSpider extends ilChartData
{
        protected function getTypeString()
        {
                return "spider";
        }
        
        public function parseData(array &$a_data)
        {
                parent::parseData($a_data);
                
                $fill = $this->getFill();
                if ($fill["color"] != "")
                {
                        $a_data[count($a_data)-1]->color = ilChart::renderColor($fill["color"] , "0.5");
                }
        }
        
        public function parseGlobalOptions(stdClass $a_options, ilChart $a_chart)
        {
                $spider = new stdClass();
                $spider->active = true;
                
                $spider->highlight = new stdClass();
                $spider->highlight->mode = "line";
                
                
                $spider->legs = new stdClass();
                $spider->legs->fillStyle = ilChart::renderColor("#000", "0.7");
                switch (count($a_chart->getLegLabels()))
                {
                        case 4:
                        case 6:
                                $spider->legs->legStartAngle = 10;                              
                                break;

                        default:
                                $spider->legs->legStartAngle = 0;
                                break;
                }
                
                $spider->legs->data = array();
                                
                $max_str_len = 0;
                foreach ($a_chart->getLegLabels() as $l)
                {
                        $l = ilUtil::shortenText ($l, 80, true);
                        
                        $label =  new stdClass();
                        $label->label = $l;
                        $spider->legs->data[] = $label;

                        $max_str_len = max($max_str_len, strlen($l));
                }
                
                // depending on caption length
                if ($max_str_len > 60)
                {
                        $font_size = 10;
                }
                else if ($max_str_len > 30)
                {
                        $font_size = 12;
                }
                else
                {
                        $font_size = 15;
                }
                $spider->legs->font = $font_size."px Arial";
                
                $spider->spiderSize = 0.7;
                $spider->lineWidth = 1;
                $spider->pointSize = 0;
                
                $spider->connection = new StdClass();
                $spider->connection->width = 2;
                
                $spider->legMin = 0.0000001;
                $spider->legMax = $a_chart->getYAxisMax();      
                
                $a_options->series->spider = $spider;
        }
}

?>