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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
* @version $Id: ChartVerticalBar.php 168 2008-01-14 05:26:43Z matt $
*
* @package Piwik_Visualization
*/
require_once "Visualization/Chart.php";
/**
* Customize the Evolution chart style for the flash graph
*
* @package Piwik_Visualization
*/
class Piwik_Visualization_ChartEvolution extends Piwik_Visualization_Chart
{
function customizeGraph()
{
parent::customizeGraph();
//$this->prepareData();
$colors = array(
"0x3357A0",
"0x9933CC",
"0xCC3399",
"0x80a033",
"0xFD9816",
"0x246AD2",
"0xFD16EA",
"0x49C100",
);
// first row in array contains line labels (legend)
$legendLabels = array_shift($this->dataGraph);
$line = array();
// define labels
foreach($legendLabels as $nbLabel => $labelName)
{
$line[$nbLabel] = new line_hollow( 1, 3, $colors[$nbLabel] );
$line[$nbLabel]->key( $labelName, 10 );
}
$maxData = 0;
$xLabels = array();
$cnt = count($this->dataGraph);
// loop over data
foreach($this->dataGraph as $values)
{
// add x axis value (label)
array_push($xLabels, $values['label']);
// loop over values for all lines (y axis values)
for($j = 0; $j < count($legendLabels); $j++)
{
// get the y axis value for line $j
$dotValue = $values['value'.$j];
// find maximum y axis value
if( $dotValue > $maxData )
{
$maxData = $dotValue;
}
$link = null;
if($this->isLinkEnabled())
{
$spacePosition = strpos($values['label'],' ');
if($spacePosition === false)
{
$spacePosition = strlen($values['label']);
}
$link = Piwik_Url::getCurrentScriptName() .
Piwik_Url::getCurrentQueryStringWithParametersModified( array(
'date' => substr($values['label'],0,$spacePosition),
'module' => 'CoreHome',
'action' => 'index',
'viewDataTable' => null// we reset the viewDataTable parameter (useless in the link)
));
// add the dot on the chart and link it
$line[$j]->add_link($dotValue, $link);
}
else
{
$line[$j]->add($dotValue);
}
}
}
$this->data_sets = $line;
$this->set_y_max( $maxData );
$this->set_x_labels( $xLabels );
}
private function isLinkEnabled()
{
static $linkEnabled;
if(!isset($linkEnabled))
{
$linkEnabled = !Piwik_Common::getRequestVar('disableLink', 0, 'int');
}
return $linkEnabled;
}
}
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