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<?php
/**
* Piwik - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Plugins\CoreVisualizations\JqplotDataGenerator;
use Piwik\Common;
use Piwik\ProxyHttp;
/**
*
*/
class Chart
{
// the data kept here conforms to the jqplot data layout
// @see http://www.jqplot.com/docs/files/jqPlotOptions-txt.html
protected $series = array();
protected $data = array();
protected $axes = array();
// temporary
public $properties;
public function setAxisXLabels($xLabels)
{
$xSteps = $this->properties['x_axis_step_size'];
$showAllTicks = $this->properties['show_all_ticks'];
$this->axes['xaxis']['labels'] = array_values($xLabels);
$ticks = array_values($xLabels);
if (!$showAllTicks) {
// unset labels so there are $xSteps number of blank ticks between labels
foreach ($ticks as $i => &$label) {
if ($i % $xSteps != 0) {
$label = ' ';
}
}
}
$this->axes['xaxis']['ticks'] = $ticks;
}
public function setAxisXOnClick(&$onClick)
{
$this->axes['xaxis']['onclick'] = & $onClick;
}
public function setAxisYValues(&$values)
{
foreach ($values as $label => &$data) {
$this->series[] = array(
'label' => $label,
'internalLabel' => $label
);
array_walk($data, function (&$v) {
$v = (float) Common::forceDotAsSeparatorForDecimalPoint($v);
});
$this->data[] = & $data;
}
}
public function setAxisYUnits($yUnits)
{
$yUnits = array_values(array_map('strval', $yUnits));
// generate axis IDs for each unique y unit
$axesIds = array();
foreach ($yUnits as $idx => $unit) {
if (!isset($axesIds[$unit])) {
// handle axes ids: first y[]axis, then y[2]axis, y[3]axis...
$nextAxisId = empty($axesIds) ? '' : count($axesIds) + 1;
$axesIds[$unit] = 'y' . $nextAxisId . 'axis';
}
}
// generate jqplot axes config
foreach ($axesIds as $unit => $axisId) {
$this->axes[$axisId]['tickOptions']['formatString'] = '%s' . $unit;
}
// map each series to appropriate yaxis
foreach ($yUnits as $idx => $unit) {
$this->series[$idx]['yaxis'] = $axesIds[$unit];
}
}
public function setAxisYLabels($labels)
{
foreach ($this->series as &$series) {
$label = $series['internalLabel'];
if (isset($labels[$label])) {
$series['label'] = $labels[$label];
}
}
}
public function render()
{
ProxyHttp::overrideCacheControlHeaders();
// See http://www.jqplot.com/docs/files/jqPlotOptions-txt.html
$data = array(
'params' => array(
'axes' => &$this->axes,
'series' => &$this->series
),
'data' => &$this->data
);
return $data;
}
}
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