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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
use Piwik\Core\Piwik;
use Piwik\Core\Common;
/**
* Generates the data in the Open Flash Chart format, from the given data.
*
* @package Piwik
* @subpackage Piwik_Visualization
*/
abstract class Piwik_Visualization_Chart implements Piwik_View_Interface
{
// 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();
protected $tooltip = array();
protected $seriesColors = array('#000000');
protected $seriesPicker = array();
// other attributes (not directly used for jqplot)
protected $maxValue;
protected $yUnit = '';
protected $displayPercentageInTooltip = true;
protected $xSteps = 2;
/**
* Whether to show every x-axis tick or only every other one.
*/
protected $showAllTicks = false;
public function setAxisXLabels(&$xLabels)
{
$this->axes['xaxis']['ticks'] = & $xLabels;
}
public function setAxisXOnClick(&$onClick)
{
$this->axes['xaxis']['onclick'] = & $onClick;
}
public function setAxisYValues(&$values)
{
foreach ($values as $label => &$data) {
$this->series[] = array(
// unsanitize here is safe since data gets outputted as JSON, not HTML
// NOTE: this is a quick fix for a double-encode issue. if this file is refactored,
// this fix can probably be removed (or at least made more understandable).
'label' => Common::unsanitizeInputValue($label),
'internalLabel' => $label
);
array_walk($data, create_function('&$v', '$v = (float)$v;'));
$this->data[] = & $data;
}
}
protected function addTooltipToValue($seriesIndex, $valueIndex, $tooltipTitle, $tooltipText)
{
$this->tooltip[$seriesIndex][$valueIndex] = array($tooltipTitle, $tooltipText);
}
public function setAxisYUnit($yUnit)
{
$yUnits = array();
for ($i = 0; $i < count($this->data); $i++) {
$yUnits[] = $yUnit;
}
$this->setAxisYUnits($yUnits);
}
public function setAxisYUnits($yUnits)
{
// generate an axis config for each unit
$axesIds = array();
// associate each series with the appropriate axis
$seriesAxes = array();
// units for tooltips
$seriesUnits = array();
foreach ($yUnits as $unit) {
// handle axes ids: first y[]axis, then y[2]axis, y[3]axis...
$nextAxisId = empty($axesIds) ? '' : count($axesIds) + 1;
$unit = $unit ? $unit : '';
if (!isset($axesIds[$unit])) {
$axesIds[$unit] = array('id' => $nextAxisId, 'unit' => $unit);
$seriesAxes[] = 'y' . $nextAxisId . 'axis';
} else {
// reuse existing axis
$seriesAxes[] = 'y' . $axesIds[$unit]['id'] . 'axis';
}
$seriesUnits[] = $unit;
}
// generate jqplot axes config
foreach ($axesIds as $axis) {
$axisKey = 'y' . $axis['id'] . 'axis';
$this->axes[$axisKey]['tickOptions']['formatString'] = '%s' . $axis['unit'];
}
$this->tooltip['yUnits'] = $seriesUnits;
// add axis config to series
foreach ($seriesAxes as $i => $axisName) {
$this->series[$i]['yaxis'] = $axisName;
}
}
public function setAxisYLabels($labels)
{
foreach ($this->series as &$series) {
$label = $series['internalLabel'];
if (isset($labels[$label])) {
$series['label'] = $labels[$label];
}
}
}
public function setSelectableColumns($selectableColumns, $multiSelect = true)
{
$this->seriesPicker['selectableColumns'] = $selectableColumns;
$this->seriesPicker['multiSelect'] = $multiSelect;
}
public function setDisplayPercentageInTooltip($display)
{
$this->displayPercentageInTooltip = $display;
}
public function setXSteps($steps)
{
$this->xSteps = $steps;
}
/**
* Show every x-axis tick instead of just every other one.
*/
public function showAllTicks()
{
$this->showAllTicks = true;
}
public function render()
{
Piwik::overrideCacheControlHeaders();
// See http://www.jqplot.com/docs/files/jqPlotOptions-txt.html
$data = array(
'params' => array(
'axes' => &$this->axes,
'series' => &$this->series,
'seriesColors' => &$this->seriesColors
),
'data' => &$this->data,
'tooltip' => &$this->tooltip,
'seriesPicker' => &$this->seriesPicker
);
Piwik_PostEvent('Visualization_Chart.render', array(&$data));
return Common::json_encode($data);
}
public function customizeChartProperties()
{
// x axis labels with steps
if (isset($this->axes['xaxis']['ticks'])) {
foreach ($this->axes['xaxis']['ticks'] as $i => &$xLabel) {
$this->axes['xaxis']['labels'][$i] = $xLabel;
if (!$this->showAllTicks && ($i % $this->xSteps) != 0) {
$xLabel = ' ';
}
}
}
}
}
|
