115 lines
5.6 KiB
PHP
115 lines
5.6 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Endroid\QrCode\Writer;
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use Endroid\QrCode\Bacon\MatrixFactory;
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use Endroid\QrCode\ImageData\LogoImageData;
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use Endroid\QrCode\Label\LabelInterface;
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use Endroid\QrCode\Logo\LogoInterface;
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use Endroid\QrCode\QrCodeInterface;
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use Endroid\QrCode\Writer\Result\ResultInterface;
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use Endroid\QrCode\Writer\Result\SvgResult;
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final class SvgWriter implements WriterInterface
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{
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public const DECIMAL_PRECISION = 10;
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public const WRITER_OPTION_BLOCK_ID = 'block_id';
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public const WRITER_OPTION_EXCLUDE_XML_DECLARATION = 'exclude_xml_declaration';
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public const WRITER_OPTION_EXCLUDE_SVG_WIDTH_AND_HEIGHT = 'exclude_svg_width_and_height';
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public const WRITER_OPTION_FORCE_XLINK_HREF = 'force_xlink_href';
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public function write(QrCodeInterface $qrCode, LogoInterface|null $logo = null, LabelInterface|null $label = null, array $options = []): ResultInterface
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{
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if (!isset($options[self::WRITER_OPTION_BLOCK_ID])) {
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$options[self::WRITER_OPTION_BLOCK_ID] = 'block';
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}
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if (!isset($options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION])) {
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$options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION] = false;
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}
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if (!isset($options[self::WRITER_OPTION_EXCLUDE_SVG_WIDTH_AND_HEIGHT])) {
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$options[self::WRITER_OPTION_EXCLUDE_SVG_WIDTH_AND_HEIGHT] = false;
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}
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$matrixFactory = new MatrixFactory();
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$matrix = $matrixFactory->create($qrCode);
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$xml = new \SimpleXMLElement('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"/>');
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$xml->addAttribute('version', '1.1');
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if (!$options[self::WRITER_OPTION_EXCLUDE_SVG_WIDTH_AND_HEIGHT]) {
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$xml->addAttribute('width', $matrix->getOuterSize().'px');
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$xml->addAttribute('height', $matrix->getOuterSize().'px');
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}
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$xml->addAttribute('viewBox', '0 0 '.$matrix->getOuterSize().' '.$matrix->getOuterSize());
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$xml->addChild('defs');
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$blockDefinition = $xml->defs->addChild('rect');
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$blockDefinition->addAttribute('id', strval($options[self::WRITER_OPTION_BLOCK_ID]));
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$blockDefinition->addAttribute('width', number_format($matrix->getBlockSize(), self::DECIMAL_PRECISION, '.', ''));
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$blockDefinition->addAttribute('height', number_format($matrix->getBlockSize(), self::DECIMAL_PRECISION, '.', ''));
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$blockDefinition->addAttribute('fill', '#'.sprintf('%02x%02x%02x', $qrCode->getForegroundColor()->getRed(), $qrCode->getForegroundColor()->getGreen(), $qrCode->getForegroundColor()->getBlue()));
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$blockDefinition->addAttribute('fill-opacity', strval($qrCode->getForegroundColor()->getOpacity()));
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$background = $xml->addChild('rect');
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$background->addAttribute('x', '0');
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$background->addAttribute('y', '0');
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$background->addAttribute('width', strval($matrix->getOuterSize()));
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$background->addAttribute('height', strval($matrix->getOuterSize()));
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$background->addAttribute('fill', '#'.sprintf('%02x%02x%02x', $qrCode->getBackgroundColor()->getRed(), $qrCode->getBackgroundColor()->getGreen(), $qrCode->getBackgroundColor()->getBlue()));
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$background->addAttribute('fill-opacity', strval($qrCode->getBackgroundColor()->getOpacity()));
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for ($rowIndex = 0; $rowIndex < $matrix->getBlockCount(); ++$rowIndex) {
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for ($columnIndex = 0; $columnIndex < $matrix->getBlockCount(); ++$columnIndex) {
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if (1 === $matrix->getBlockValue($rowIndex, $columnIndex)) {
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$block = $xml->addChild('use');
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$block->addAttribute('x', number_format($matrix->getMarginLeft() + $matrix->getBlockSize() * $columnIndex, self::DECIMAL_PRECISION, '.', ''));
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$block->addAttribute('y', number_format($matrix->getMarginLeft() + $matrix->getBlockSize() * $rowIndex, self::DECIMAL_PRECISION, '.', ''));
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$block->addAttribute('xlink:href', '#'.$options[self::WRITER_OPTION_BLOCK_ID], 'http://www.w3.org/1999/xlink');
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}
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}
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}
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$result = new SvgResult($matrix, $xml, boolval($options[self::WRITER_OPTION_EXCLUDE_XML_DECLARATION]));
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if ($logo instanceof LogoInterface) {
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$this->addLogo($logo, $result, $options);
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}
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return $result;
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}
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/** @param array<string, mixed> $options */
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private function addLogo(LogoInterface $logo, SvgResult $result, array $options): void
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{
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$logoImageData = LogoImageData::createForLogo($logo);
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if (!isset($options[self::WRITER_OPTION_FORCE_XLINK_HREF])) {
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$options[self::WRITER_OPTION_FORCE_XLINK_HREF] = false;
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}
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$xml = $result->getXml();
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/** @var \SimpleXMLElement $xmlAttributes */
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$xmlAttributes = $xml->attributes();
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$x = intval($xmlAttributes->width) / 2 - $logoImageData->getWidth() / 2;
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$y = intval($xmlAttributes->height) / 2 - $logoImageData->getHeight() / 2;
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$imageDefinition = $xml->addChild('image');
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$imageDefinition->addAttribute('x', strval($x));
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$imageDefinition->addAttribute('y', strval($y));
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$imageDefinition->addAttribute('width', strval($logoImageData->getWidth()));
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$imageDefinition->addAttribute('height', strval($logoImageData->getHeight()));
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$imageDefinition->addAttribute('preserveAspectRatio', 'none');
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if ($options[self::WRITER_OPTION_FORCE_XLINK_HREF]) {
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$imageDefinition->addAttribute('xlink:href', $logoImageData->createDataUri(), 'http://www.w3.org/1999/xlink');
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} else {
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$imageDefinition->addAttribute('href', $logoImageData->createDataUri());
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}
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}
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}
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