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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Visualization;
use Piwik\Common;
use Piwik\Piwik;
use Piwik\View\ViewInterface;
use Sparkline_Line;
/**
* @see libs/sparkline/lib/Sparkline_Line.php
* @link http://sparkline.org
*/
require_once PIWIK_INCLUDE_PATH . '/libs/sparkline/lib/Sparkline_Line.php';
/**
* Renders a sparkline image given a PHP data array.
* Using the Sparkline PHP Graphing Library sparkline.org
*/
class Sparkline implements ViewInterface
{
const DEFAULT_WIDTH = 100;
const DEFAULT_HEIGHT = 25;
public static $enableSparklineImages = true;
private static $colorNames = array('backgroundColor', 'lineColor', 'minPointColor', 'lastPointColor', 'maxPointColor');
/**
* Width of the sparkline
* @var int
*/
protected $_width = self::DEFAULT_WIDTH;
/**
* Height of sparkline
* @var int
*/
protected $_height = self::DEFAULT_HEIGHT;
/**
* Array with format: array( x, y, z, ... )
* @param array $data
*/
public function setValues($data)
{
$this->values = $data;
}
/**
* Sets the height of the sparkline
* @param int $height
*/
public function setHeight($height)
{
if (!is_numeric($height) || $height <= 0) {
return;
}
$this->_height = (int)$height;
}
/**
* Sets the width of the sparkline
* @param int $width
*/
public function setWidth($width)
{
if (!is_numeric($width) || $width <= 0) {
return;
}
$this->_width = (int)$width;
}
/**
* Returns the width of the sparkline
* @return int
*/
public function getWidth()
{
return $this->_width;
}
/**
* Returns the height of the sparkline
* @return int
*/
public function getHeight()
{
return $this->_height;
}
public function main()
{
$width = $this->getWidth();
$height = $this->getHeight();
$sparkline = new Sparkline_Line();
$this->setSparklineColors($sparkline);
$min = $max = $last = null;
$i = 0;
$toRemove = array('%', str_replace('%s', '', Piwik::translate('General_Seconds')));
foreach ($this->values as $value) {
// 50% and 50s should be plotted as 50
$value = str_replace($toRemove, '', $value);
// replace localized decimal separator
$value = str_replace(',', '.', $value);
if ($value == '') {
$value = 0;
}
$sparkline->SetData($i, $value);
if (null == $min || $value <= $min[1]) {
$min = array($i, $value);
}
if (null == $max || $value >= $max[1]) {
$max = array($i, $value);
}
$last = array($i, $value);
$i++;
}
$sparkline->SetYMin(0);
$sparkline->SetYMax($max[1]);
$sparkline->SetPadding(3, 0, 2, 0); // top, right, bottom, left
$sparkline->SetFeaturePoint($min[0], $min[1], 'minPointColor', 5);
$sparkline->SetFeaturePoint($max[0], $max[1], 'maxPointColor', 5);
$sparkline->SetFeaturePoint($last[0], $last[1], 'lastPointColor', 5);
$sparkline->SetLineSize(3); // for renderresampled, linesize is on virtual image
$ratio = 1;
$sparkline->RenderResampled($width * $ratio, $height * $ratio);
$this->sparkline = $sparkline;
}
public function render()
{
if (self::$enableSparklineImages) {
$this->sparkline->Output();
}
}
/**
* Sets the sparkline colors
*
* @param Sparkline_Line $sparkline
*/
private function setSparklineColors($sparkline)
{
$colors = Common::getRequestVar('colors', false, 'json');
if (empty($colors)) { // quick fix so row evolution sparklines will have color in widgetize's iframes
$colors = array(
'backgroundColor' => '#ffffff',
'lineColor' => '#162C4A',
'minPointColor' => '#ff7f7f',
'lastPointColor' => '#55AAFF',
'maxPointColor' => '#75BF7C'
);
}
foreach (self::$colorNames as $name) {
if (!empty($colors[$name])) {
$sparkline->SetColorHtml($name, $colors[$name]);
}
}
}
}
|
