156 lines
3.4 KiB
PHP
156 lines
3.4 KiB
PHP
<?php defined('SYSPATH') or die('No direct access allowed.');
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/**
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* This class provides access to Google's Chart API
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*
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* @package lnApp
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* @subpackage GoogleChart
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* @category Helper
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* @author Deon George
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* @copyright (c) 2010 Deon George
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* @license http://dev.leenooks.net/license.html
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*/
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class GoogleChart_ComboChart extends GoogleChart {
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// Should the Y column range be a log() function
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protected $_logy = FALSE;
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// Should the bar values be stacked
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protected $_stacked = FALSE;
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// Default line type to use
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protected $_type = 'bars';
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public function logy($value) {
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$this->_logy = $value;
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return $this;
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}
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public function stacked($value) {
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$this->_stacked = $value;
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return $this;
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}
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/**
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* Set the type of the chart
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* @param $type Chart type as per $this->cht
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*/
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public function ltitle($side,$title) {
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if (! in_array($side,array('yl','yr','x')))
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throw new Kohana_Exception('Unknown side :side',array(':side'=>$side));
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$this->_ltitle[$side] = $title;
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return $this;
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}
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public function json() {
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$return = array();
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$return['cols'][] = array(
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'id'=>'date',
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'label'=>'date',
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'type'=>'string',
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);
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// Columns
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foreach (array_keys($this->_axis) as $l) {
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$return['cols'][] = array(
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'id'=>$l,
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'label'=>$l,
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'type'=>'number',
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);
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}
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// Values
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foreach ($this as $k => $v) {
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$data = array();
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array_push($data,array('v'=>$k));
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foreach ($this->_axis as $l => $axis)
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array_push($data,array('v'=>$v[$l]));
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$return['rows'][] = array('c'=>$data);
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}
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$options = array(
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'bar' => array('groupWidth'=>'75%'),
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'vAxis' => array('logScale'=>$this->_logy ? 1:0),
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'title' => $this->_title,
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'isStacked' => $this->_stacked ? 1:0,
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'seriesType' => $this->_type,
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'series' => $this->series(),
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);
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return json_encode(array('data'=>$return,'options'=>$options));
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}
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public function render() {
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Script::add(array(
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'type'=>'src',
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'data'=>'https://www.google.com/jsapi',
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));
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Script::add(array(
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'type'=>'stdin',
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'data'=>'google.load("visualization", "1", {packages: ["corechart"]});',
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));
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Script::add(array(
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'type'=>'stdin',
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'data'=>"
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function drawChart".$this->_divname."() {
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var jsonData = $.ajax({
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url: '".$this->_dataurl."',
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dataType:'json',
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async: false,
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}).responseText;
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var x = JSON.parse(jsonData);
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for(var key in x) {
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if (key == 'data')
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data = x[key];
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else if (key == 'options')
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options = x[key];
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else
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alert('UNKNOWN Key: '+key);
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}
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// Create our data table out of JSON data loaded from server.
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var data = new google.visualization.DataTable(data);
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// Instantiate and draw our chart, passing in some options.
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var chart = new google.visualization.ComboChart(document.getElementById('".$this->_divname."'));
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chart.draw(data, options);
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}
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",
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));
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Script::add(array(
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'type'=>'stdin',
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'data'=>'google.setOnLoadCallback(drawChart'.$this->_divname.');',
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));
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return sprintf('<div id="%s" style="width: %spx; height: %spx;"></div>',$this->_divname,$this->_width,$this->_height);
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}
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private function series() {
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$return = array();
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$c = $this->seriescolors();
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$i = 0;
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foreach ($this->_axis as $l => $axis) {
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// @todo This shouldnt be hard coded
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if ($axis == 'yl')
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array_push($return,array('type'=>'bar','color'=>$c[$i],'targetAxisIndex'=>0));
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else
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array_push($return,array('type'=>'line','color'=>$c[$i],'targetAxisIndex'=>1));
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$i++;
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}
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return $return;
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}
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}
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?>
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