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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 $Id$
*
* @category Piwik
* @package Piwik
*/
/**
* @see libs/open-flash-chart/php-ofc-library/open-flash-chart.php
* @link http://teethgrinder.co.uk/open-flash-chart-2/
*/
require_once PIWIK_INCLUDE_PATH . '/libs/open-flash-chart/php-ofc-library/open-flash-chart.php';
/**
* 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_iView
{
/**
* @var Piwik_Visualization_OpenFlashChart
*/
protected $chart = null;
protected $xLabels = array();
protected $xOnClick = array();
protected $xSteps = 2;
protected $yLabels = array();
protected $yValues = array();
protected $yUnit = '';
protected $maxValue;
protected $minValue;
protected $displayPercentageInTooltip = true;
function __construct()
{
$this->chart = new open_flash_chart();
}
public function setAxisXLabels($xLabels)
{
$this->xLabels = $xLabels;
}
public function setAxisXOnClick($onClick)
{
$this->xOnClick = $onClick;
}
public function setAxisYValues($values)
{
$this->yValues = $values;
}
function setAxisYUnit($yUnit)
{
if(!empty($yUnit))
{
$this->yUnit = $yUnit;
}
}
public function setAxisYLabels($labels)
{
$this->yLabels = $labels;
}
public function setDisplayPercentageInTooltip($bool)
{
$this->displayPercentageInTooltip = $bool;
}
public function setXSteps($steps)
{
$this->xSteps = $steps;
}
protected function getDataSetsToDisplay()
{
if(empty($this->yValues)) {
return false;
}
return array_keys($this->yValues);
}
public function getMaxValue()
{
$datasetsIds = $this->getDataSetsToDisplay();
if($datasetsIds === false)
{
return 0;
}
$maxCrossDataSets = false;
foreach($datasetsIds as $dataset)
{
$maxValue = max($this->yValues[$dataset]);
if($maxCrossDataSets === false
|| $maxValue > $maxCrossDataSets)
{
$maxCrossDataSets = $maxValue;
}
}
if($maxCrossDataSets > 10)
{
$maxCrossDataSets = $maxCrossDataSets + 10 - $maxCrossDataSets % 10;
}
return $maxCrossDataSets;
}
public function setTitle($text, $css)
{
$title = new title($text);
$title->set_style($css);
$this->chart->set_title($title);
}
public function render()
{
if(Piwik_Url::getCurrentScheme() == 'https' ||
Zend_Registry::get('config')->General->reverse_proxy)
{
@header("Pragma: ");
@header("Cache-Control: must-revalidate");
}
return $this->chart->toPrettyString();
}
function customizeChartProperties()
{
$this->chart->set_number_format($num_decimals = 0,
$is_fixed_num_decimals_forced = true,
$is_decimal_separator_comma = false,
$is_thousand_separator_disabled = false);
$gridColour = '#E0E1E4';
$countValues = count($this->xLabels);
$this->maxValue = $this->getMaxValue();
$this->minValue = 0;
// X Axis
$this->x = new x_axis();
$this->x->set_colour( '#596171' );
$this->x->set_grid_colour( $gridColour );
$this->x->set_steps($this->xSteps);
// X Axis Labels
$this->x_labels = new x_axis_labels();
$this->x_labels->set_size(11);
//manually fix the x labels step as this doesn't work in this OFC release..
$xLabelsStepped = $this->xLabels;
foreach($xLabelsStepped as $i => &$xLabel)
{
if(($i % $this->xSteps) != 0)
{
$xLabel = '';
}
}
$this->x_labels->set_labels($xLabelsStepped);
$this->x_labels->set_steps(2);
$this->x->set_labels($this->x_labels);
// Y Axis
$this->y = new y_axis();
$this->y->set_colour('#ffffff');
$this->y->set_grid_colour($gridColour);
$stepsCount = 2;
$stepsEveryNLabel = ceil(($this->maxValue - $this->minValue) / $stepsCount);
if($this->maxValue == 0)
{
$this->maxValue = 1;
}
$this->y->set_range( $this->minValue, (int) ceil($this->maxValue), (int) $stepsEveryNLabel);
$dataSetsToDisplay = $this->getDataSetsToDisplay();
if($dataSetsToDisplay != false)
{
$dataSetToDisplay = current($dataSetsToDisplay);
$this->y->set_label_text("#val#".$this->yUnit);
}
// Tooltip
$this->tooltip = new tooltip();
$this->tooltip->set_shadow( true );
$this->tooltip->set_stroke( 1 );
// Attach elements to the graph
$this->chart->set_x_axis($this->x);
$this->chart->set_y_axis($this->y);
$this->chart->set_tooltip($this->tooltip);
$this->chart->set_bg_colour('#ffffff');
}
}
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