192 lines
6.9 KiB
PHP
192 lines
6.9 KiB
PHP
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<?php
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/**
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*
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* @version 1.0.5 October 6, 2015
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* @author Llewellyn van der Merwe <https://www.vdm.io/> (forked - <https://code.google.com/p/php-class-for-google-chart-tools/>)
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* @license GNU General Public License <http://www.gnu.org/copyleft/gpl.html>
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*
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**/
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// No direct access.
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defined('_JEXEC') or die;
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class Chartbuilder
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{
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private static $_first = true;
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public static $_count = 0;
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private $_chartType;
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private $_data;
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private $_dataType;
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private $_skipFirstRow;
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/**
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* sets the chart type and updates the chart counter
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*/
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public function __construct($chartType, $skipFirstRow = false){
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$this->_chartType = $chartType;
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$this->_skipFirstRow = $skipFirstRow;
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self::$_count++;
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}
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/**
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* loads the dataset and converts it to the correct format
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*/
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public function load($data, $dataType = 'json'){
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$this->_data = ($dataType != 'json') ? $this->dataToJson($data) : $data;
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}
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/**
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* load jsapi
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*/
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private function initChart(){
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self::$_first = false;
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$output = '';
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// start a code block
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/*$output .= '<script type="text/javascript" src="https://www.google.com/jsapi"></script>'."\n";*/
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$output .= '<script type="text/javascript">google.load(\'visualization\', \'1.0\', {\'packages\':[\'corechart\']});</script>'."\n";
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return $output;
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}
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/**
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* draws the chart
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*/
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public function draw($div, Array $options = array()){
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$output = '';
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if(self::$_first)$output .= $this->initChart();
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// start a code block
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$output .= '<script type="text/javascript">';
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// set callback function
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$output .= 'google.setOnLoadCallback(drawChart' . self::$_count . ');';
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// create callback function
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$output .= 'function drawChart' . self::$_count . '(){';
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$output .= 'var data = new google.visualization.DataTable(' . $this->_data . ');';
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// make chart resize
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$output .= "var width = 0;
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var graphHeight". self::$_count ." = 0;
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var graphWidth". self::$_count ." = 0;
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jQuery(window).ready(function() {
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width = jQuery(window).width();
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if (width < 1000){
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sizeGraph". self::$_count ."(true,width);
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} else if (width > 1000) {
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sizeGraph". self::$_count ."(false);
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}
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";
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// draw on tab change
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if (isset($options['tabclickdraw']))
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{
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$output .= "jQuery('.".$options['tabclickdraw']."').on('click', function(){
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width = jQuery(window).width();
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if (width < 1000){
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sizeGraph". self::$_count ."(true,width);
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} else if (width > 1000) {
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sizeGraph". self::$_count ."(false);
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}
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});";
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unset($options['tabclickdraw']);
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}
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$output .= "
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jQuery('.icon').on('click', function(){
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width = jQuery(window).width();
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if (width < 1000){
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sizeGraph". self::$_count ."(true,width);
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} else if (width > 1000) {
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sizeGraph". self::$_count ."(false);
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}
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});
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});
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jQuery(window).resize(function () {
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width = jQuery(window).width();
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if (width < 1000){
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sizeGraph". self::$_count ."(true,width);
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} else if (width > 1000) {
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sizeGraph". self::$_count ."(false);
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}
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});
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function sizeGraph". self::$_count ."(set, width) {
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if(set){
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var setTo = width/1200;
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graphHeight". self::$_count ." = setTo*".$options['height'].";
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graphWidth". self::$_count ." = setTo*".$options['width'].";
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} else {
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graphHeight". self::$_count ." = ".$options['height'].";
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graphWidth". self::$_count ." = ".$options['width'].";
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}
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";
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// set the options
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$output .= 'var options = ' . json_encode($options) . '; options["height"]=graphHeight'. self::$_count .'; options["width"]=graphWidth'. self::$_count .';';
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// create and draw the chart
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$output .= 'var chart = new google.visualization.' . $this->_chartType . '(document.getElementById(\'' . $div . '\'));';
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$output .= 'chart.draw(data, options);';
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$output .= '}} </script>' . "\n";
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return $output;
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}
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/**
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* substracts the column names from the first and second row in the dataset
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*/
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private function getColumns($data){
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$cols = array();
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foreach($data[0] as $key => $value){
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if(is_numeric($key)){
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if(is_string($data[1][$key])){
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$cols[] = array('id' => '', 'label' => $value, 'type' => 'string');
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} else {
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$cols[] = array('id' => '', 'label' => $value, 'type' => 'number');
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}
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$this->_skipFirstRow = true;
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} else {
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if(is_string($value)){
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$cols[] = array('id' => '', 'label' => $key, 'type' => 'string');
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} else {
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$cols[] = array('id' => '', 'label' => $key, 'type' => 'number');
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}
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}
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}
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return $cols;
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}
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/**
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* convert array data to json
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* info: https://code.google.com/intl/nl-NL/apis/chart/interactive/docs/datatables_dataviews.html#javascriptliteral
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*/
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private function dataToJson($data){
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$cols = $this->getColumns($data);
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$rows = array();
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foreach($data as $key => $row){
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if($key != 0 || !$this->_skipFirstRow){
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$c = array();
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foreach($row as $v){
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$c[] = array('v' => $v);
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}
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$rows[] = array('c' => $c);
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}
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}
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return json_encode(array('cols' => $cols, 'rows' => $rows));
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}
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}
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