SemanticResultFormats/GoogleCharts/SRF_GooglePie.php

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<?php
class SRFGooglePie extends SMWResultPrinter {
        
        protected $m_width = 250;
        protected $m_heighth = 100;

        protected function handleParameters( array $params, $outputmode ) {
                parent::handleParameters( $params, $outputmode );
                
                $this->m_width = $this->m_params['width'];
                $this->m_height = $this->m_params['height'];
        }

        public function getName() {
                return wfMsg( 'srf_printername_googlepie' );
        }

        protected function getResultText( SMWQueryResult $res, $outputmode ) {
                $this->isHTML = true;

                $t = "";
                $n = "";
                
                // if there is only one column in the results then stop right away
                if ($res->getColumnCount() == 1) return "";
                                
                // print all result rows
                $first = true;
                $max = 0; // the biggest value. needed for scaling
                
                while ( $row = $res->getNext() ) {
                        $name = $row[0]->getNextDataValue()->getShortWikiText();
                        
                        foreach ( $row as $field ) {
                                while ( ( $object = $field->getNextDataValue() ) !== false ) {
                                        // use numeric sortkey
                                        if ( $object->isNumeric() ) {
                                                $nr = $object->getDataItem()->getSortKey();
                                                
                                                $max = max( $max, $nr );
                                                
                                                if ( $first ) {
                                                        $first = false;
                                                        $t .= $nr;
                                                        $n = $name;
                                                } else {
                                                        $t = $nr . ',' . $t;
                                                        $n = $name . '|' . $n;
                                                }
                                        }
                                }
                        }
                }
                
                return  '<img src="http://chart.apis.google.com/chart?cht=p3&chs=' . $this->m_width . 'x' . $this->m_height . '&chds=0,' . $max . '&chd=t:' . $t . '&chl=' . $n . '" width="' . $this->m_width . '" height="' . $this->m_height . '"  />';
        }

        public function getParameters() {
                $params = parent::getParameters();
                
                $params['height'] = new Parameter( 'height', Parameter::TYPE_INTEGER, 100 );
                $params['height']->setMessage( 'srf_paramdesc_chartheight' );
                
                $params['width'] = new Parameter( 'width', Parameter::TYPE_INTEGER, 250 );
                $params['width']->setMessage( 'srf_paramdesc_chartwidth' );
                
                return $params;
        }

}

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