Ubuntu

eTag = null; return; } $this->eTag = md5($eTag); } /** * @param string $filename * Without extension */ public function setFilename(string $filename) { $this->filename = $filename; } /** * @param string|int $expire * time format or string format */ public function setExpire($expire) { if (null === $expire) { $this->expire = null; return; } if (is_numeric($expire)) { $this->expire = $expire; return; } $this->expire = strtotime($expire); } public function generate() { list($width, $height) = $this->getNormalizedSize(); $count = $this->getCount(); $picture = new Picture($width, $height); $picture->applyBackground($this->backgroundColor); $lineThickness = (int) round($this->lineThickness * $this->ratioComputing); $picture->applyThickness($lineThickness); $stepCount = $this->getMaxNumberOfDataPointsAcrossSerieses(); foreach ($this->data as $seriesIndex => $series) { $seriesNormalized = $this->getNormalizedData($seriesIndex); list($polygon, $line) = $this->getChartElements($seriesNormalized, $stepCount); $picture->applyPolygon($polygon, $this->getFillColor($seriesIndex), $count); $picture->applyLine($line, $this->getLineColor($seriesIndex)); foreach ($this->points as $point) { if ($point['series'] != $seriesIndex) { continue; } $isFirst = $point['index'] === 0; $lineIndex = $isFirst ? 0 : $point['index'] - 1; $picture->applyDot($line[$lineIndex][$isFirst ? 0 : 2], $line[$lineIndex][$isFirst ? 1 : 3], $point['radius'] * $this->ratioComputing, $point['color']); } } $this->file = $picture->generate($this->width, $this->height); } /** * @param array $server */ public function setServer(array $server) { $this->server = $server; } /** * @param string $key * * @return mixed|null */ public function getServerValue(string $key) { if (isset($this->server[$key])) { return $this->server[$key]; } return null; } /** * @return bool */ protected function checkNoModified() : bool { $httpIfNoneMatch = $this->getServerValue('HTTP_IF_NONE_MATCH'); if ($this->eTag && $httpIfNoneMatch) { if ($httpIfNoneMatch === $this->eTag) { $serverProtocol = $this->getServerValue('SERVER_PROTOCOL'); header($serverProtocol . ' 304 Not Modified', \true, 304); return \true; } } return \false; } public function display() { if (!$this->file) { $this->generate(); } if ($this->checkNoModified()) { return; } header('Content-Type: image/png'); header('Content-Disposition: inline; filename="' . $this->filename . '.png"'); header('Accept-Ranges: none'); if ($this->eTag) { header('ETag: ' . $this->eTag); } if (null !== $this->expire) { header('Expires: ' . gmdate('D, d M Y H:i:s T', $this->expire)); } imagepng($this->file); } /** * @param string $savePath */ public function save(string $savePath) { if (!$this->file) { $this->generate(); } imagepng($this->file, $savePath); } /** * @return string */ public function toBase64() : string { if (!$this->file) { $this->generate(); } ob_start(); imagepng($this->file); $buffer = ob_get_contents(); if (ob_get_length()) { ob_end_clean(); } return base64_encode($buffer); } public function destroy() { if ($this->file && \PHP_VERSION < 80000) { imagedestroy($this->file); } $this->file = null; } }