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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.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;
/**
* Renders a sparkline image given a PHP data array.
* Using the Sparkline PHP Graphing Library sparkline.org
*/
class Sparkline implements ViewInterface
{
const DEFAULT_WIDTH = 200;
const DEFAULT_HEIGHT = 50;
const MAX_WIDTH = 1000;
const MAX_HEIGHT = 1000;
/**
* Width of the sparkline
* @var int
*/
protected $_width = self::DEFAULT_WIDTH;
/**
* Height of sparkline
* @var int
*/
protected $_height = self::DEFAULT_HEIGHT;
private $serieses = [];
/**
* @var \Davaxi\Sparkline
*/
private $sparkline;
/**
* Array with format: array( x, y, z, ... )
* @param array ...$data
*/
public function setValues(...$data)
{
$this->serieses = $data;
}
public function addSeries(array $values)
{
$this->serieses[] = $values;
}
public function main()
{
try {
$sparkline = new \Davaxi\Sparkline();
} catch (\Exception $exception) {
// Ignore GD not installed exception
return;
}
$thousandSeparator = Piwik::translate('Intl_NumberSymbolGroup');
$decimalSeparator = Piwik::translate('Intl_NumberSymbolDecimal');
$sparkline->setData();
// remove default series
foreach ($this->serieses as $seriesIndex => $series) {
$values = [];
$hasFloat = false;
foreach ($series as $value) {
// replace localized decimal separator
$value = str_replace($thousandSeparator, '', $value);
$value = str_replace($decimalSeparator, '.', $value);
// sanitize value
$value = filter_var($value, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION | FILTER_FLAG_ALLOW_SCIENTIFIC);
if (empty($value) || !is_numeric($value)) {
$value = 0;
}
$values[] = $value;
if (is_float($value + 0)) {
// coerce to int/float type before checking
$hasFloat = true;
}
}
// the sparkline lib used converts everything to integers (see the FormatTrait.php file) which means float
// numbers that are close to 1.0 or 0.0 will get floored. this can happen in the average page generation time
// report, and cause some values which are, eg, around ~.9 to appear as 0 in the sparkline. to workaround this, we
// scale the values.
if ($hasFloat) {
$values = array_map(function ($x) {
return $x * 1000.0;
}, $values);
}
$sparkline->addSeries($values);
$this->setSparklineColors($sparkline, $seriesIndex);
}
$sparkline->setWidth($this->getWidth());
$sparkline->setHeight($this->getHeight());
$sparkline->setLineThickness(1);
$sparkline->setPadding('5');
$this->sparkline = $sparkline;
}
/**
* Returns the width of the sparkline
* @return int
*/
public function getWidth()
{
return $this->_width;
}
/**
* Sets the width of the sparkline
* @param int $width
*/
public function setWidth($width)
{
if (!is_numeric($width) || $width <= 0) {
return;
}
if ($width > self::MAX_WIDTH) {
$this->_width = self::MAX_WIDTH;
} else {
$this->_width = (int) $width;
}
}
/**
* Returns the height of the sparkline
* @return int
*/
public function getHeight()
{
return $this->_height;
}
/**
* Sets the height of the sparkline
* @param int $height
*/
public function setHeight($height)
{
if (!is_numeric($height) || $height <= 0) {
return;
}
if ($height > self::MAX_HEIGHT) {
$this->_height = self::MAX_HEIGHT;
} else {
$this->_height = (int) $height;
}
}
/**
* Sets the sparkline colors
*
* @param \Davaxi\Sparkline $sparkline
*/
private function setSparklineColors($sparkline, $seriesIndex)
{
$colors = Common::getRequestVar('colors', false, 'json');
$defaultColors = array('backgroundColor' => '#ffffff', 'lineColor' => '#162C4A', 'minPointColor' => '#ff7f7f', 'maxPointColor' => '#75BF7C', 'lastPointColor' => '#55AAFF', 'fillColor' => '#ffffff');
if (empty($colors)) {
$colors = $defaultColors;
//set default color, if no color passed
} else {
$colors = array_merge($defaultColors, $colors);
//set default color key, if no key set.
}
if (strtolower($colors['backgroundColor']) !== '#ffffff') {
$sparkline->setBackgroundColorHex($colors['backgroundColor']);
} else {
$sparkline->deactivateBackgroundColor();
}
if (is_array($colors['lineColor'])) {
$sparkline->setLineColorHex($colors['lineColor'][$seriesIndex] ?? $defaultColors['lineColor'], $seriesIndex);
// set point colors to same as line colors so they can be better differentiated
$colors['minPointColor'] = $colors['maxPointColor'] = $colors['lastPointColor'] = $colors['lineColor'][$seriesIndex] ?? $defaultColors['lineColor'];
} else {
$sparkline->setLineColorHex($colors['lineColor']);
}
if (strtolower($colors['fillColor'] !== "#ffffff")) {
$sparkline->setFillColorHex($colors['fillColor']);
} else {
$sparkline->deactivateFillColor();
}
if (strtolower($colors['minPointColor'] !== "#ffffff")) {
$sparkline->addPoint("minimum", 5, $colors['minPointColor'], $seriesIndex);
}
if (strtolower($colors['maxPointColor'] !== "#ffffff")) {
$sparkline->addPoint("maximum", 5, $colors['maxPointColor'], $seriesIndex);
}
if (strtolower($colors['lastPointColor'] !== "#ffffff")) {
$sparkline->addPoint("last", 5, $colors['lastPointColor'], $seriesIndex);
}
}
public function render()
{
if (empty($this->sparkline->getSeriesCount())) {
// ensure to have at least one series & point in sparkline to avoid possible php notices/errors
// a sparkline will then be displayed with a zero line
$this->sparkline->addSeries([0]);
}
if ($this->sparkline instanceof \Davaxi\Sparkline) {
$this->sparkline->display();
$this->sparkline->destroy();
}
}
}