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<?php declare(strict_types=1); namespace Endroid\QrCode\Writer; use Endroid\QrCode\Bacon\MatrixFactory; use Endroid\QrCode\Label\LabelInterface; use Endroid\QrCode\Logo\LogoInterface; use Endroid\QrCode\QrCodeInterface; use Endroid\QrCode\Writer\Result\ResultInterface; use Endroid\QrCode\Writer\Result\SvgResult; final class SvgWriter implements WriterInterface { public const WRITER_OPTION_BLOCK_ID = 'block_id'; public const WRITER_OPTION_EXCLUDE_XML_DECLARATION = 'exclude_xml_declaration'; public const WRITER_OPTION_FORCE_XLINK_HREF = 'force_xlink_href'; public function write(QrCodeInterface $qrCode, LogoInterface $logo = null, LabelInterface $label = null, array $options = []): ResultInterface { if (!isset($options[self::WRITER_OPTION_BLOCK_ID])) { $options[self::WRITER_OPTION_BLOCK_ID] = 'block'; } if (!isset($options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION])) { $options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION] = false; } $matrixFactory = new MatrixFactory(); $matrix = $matrixFactory->create($qrCode); $xml = new \SimpleXMLElement('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"/>'); $xml->addAttribute('version', '1.1'); $xml->addAttribute('width', $matrix->getOuterSize().'px'); $xml->addAttribute('height', $matrix->getOuterSize().'px'); $xml->addAttribute('viewBox', '0 0 '.$matrix->getOuterSize().' '.$matrix->getOuterSize()); $xml->addChild('defs'); $blockDefinition = $xml->defs->addChild('rect'); $blockDefinition->addAttribute('id', $options[self::WRITER_OPTION_BLOCK_ID]); $blockDefinition->addAttribute('width', strval($matrix->getBlockSize())); $blockDefinition->addAttribute('height', strval($matrix->getBlockSize())); $blockDefinition->addAttribute('fill', '#'.sprintf('%02x%02x%02x', $qrCode->getForegroundColor()->getRed(), $qrCode->getForegroundColor()->getGreen(), $qrCode->getForegroundColor()->getBlue())); $blockDefinition->addAttribute('fill-opacity', strval($qrCode->getForegroundColor()->getOpacity())); $background = $xml->addChild('rect'); $background->addAttribute('x', '0'); $background->addAttribute('y', '0'); $background->addAttribute('width', strval($matrix->getOuterSize())); $background->addAttribute('height', strval($matrix->getOuterSize())); $background->addAttribute('fill', '#'.sprintf('%02x%02x%02x', $qrCode->getBackgroundColor()->getRed(), $qrCode->getBackgroundColor()->getGreen(), $qrCode->getBackgroundColor()->getBlue())); $background->addAttribute('fill-opacity', strval($qrCode->getBackgroundColor()->getOpacity())); for ($rowIndex = 0; $rowIndex < $matrix->getBlockCount(); ++$rowIndex) { for ($columnIndex = 0; $columnIndex < $matrix->getBlockCount(); ++$columnIndex) { if (1 === $matrix->getBlockValue($rowIndex, $columnIndex)) { $block = $xml->addChild('use'); $block->addAttribute('x', strval($matrix->getMarginLeft() + $matrix->getBlockSize() * $columnIndex)); $block->addAttribute('y', strval($matrix->getMarginLeft() + $matrix->getBlockSize() * $rowIndex)); $block->addAttribute('xlink:href', '#'.$options[self::WRITER_OPTION_BLOCK_ID], 'http://www.w3.org/1999/xlink'); } } } $result = new SvgResult($xml, $options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION]); if ($logo instanceof LogoInterface) { $this->addLogo($logo, $result, $options); } return $result; } /** @param array<mixed> $options / private function addLogo(LogoInterface $logo, SvgResult $result, array $options): void { if (!isset($options[self::WRITER_OPTION_FORCE_XLINK_HREF])) { $options[self::WRITER_OPTION_FORCE_XLINK_HREF] = false; } if ('image/svg+xml' === $logo->getMimeType() && (null === $logo->getResizeToHeight() \|\| null === $logo->getResizeToWidth())) { throw new \Exception('SVG Logos require an explicit height set via setLogoSize($width, $height)'); } $xml = $result->getXml(); /* @var \SimpleXMLElement $xmlAttributes */ $xmlAttributes = $xml->attributes(); $x = intval($xmlAttributes->width) / 2 - $logo->getTargetWidth() / 2; $y = intval($xmlAttributes->height) / 2 - $logo->getTargetHeight() / 2; $imageDefinition = $xml->addChild('image'); $imageDefinition->addAttribute('x', strval($x)); $imageDefinition->addAttribute('y', strval($y)); $imageDefinition->addAttribute('width', strval($logo->getTargetWidth())); $imageDefinition->addAttribute('height', strval($logo->getTargetHeight())); $imageDefinition->addAttribute('preserveAspectRatio', 'none'); // xlink:href is actually deprecated, but still required when placing the qr code in a pdf. // SimpleXML strips out the xlink part by using addAttribute(), so it must be set directly. if ($options[self::WRITER_OPTION_FORCE_XLINK_HREF]) { $imageDefinition['xlink:href'] = $logo->getImageDataUri(); } else { $imageDefinition->addAttribute('href', $logo->getImageDataUri()); } } }

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