140 lines
5.2 KiB
PHP
140 lines
5.2 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\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\PdfResult;
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use Endroid\QrCode\Writer\Result\ResultInterface;
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final class PdfWriter implements WriterInterface
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{
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public const WRITER_OPTION_UNIT = 'unit';
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public const WRITER_OPTION_PDF = 'fpdf';
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public const WRITER_OPTION_X = 'x';
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public const WRITER_OPTION_Y = 'y';
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public const WRITER_OPTION_LINK = 'link';
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public function write(QrCodeInterface $qrCode, LogoInterface|null $logo = null, LabelInterface|null $label = null, array $options = []): ResultInterface
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{
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$matrixFactory = new MatrixFactory();
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$matrix = $matrixFactory->create($qrCode);
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$unit = 'mm';
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if (isset($options[self::WRITER_OPTION_UNIT])) {
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$unit = $options[self::WRITER_OPTION_UNIT];
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}
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$allowedUnits = ['mm', 'pt', 'cm', 'in'];
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if (!in_array($unit, $allowedUnits)) {
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throw new \Exception(sprintf('PDF Measure unit should be one of [%s]', implode(', ', $allowedUnits)));
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}
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$labelSpace = 0;
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if ($label instanceof LabelInterface) {
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$labelSpace = 30;
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}
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if (!class_exists(\FPDF::class)) {
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throw new \Exception('Unable to find FPDF: check your installation');
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}
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$foregroundColor = $qrCode->getForegroundColor();
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if ($foregroundColor->getAlpha() > 0) {
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throw new \Exception('PDF Writer does not support alpha channels');
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}
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$backgroundColor = $qrCode->getBackgroundColor();
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if ($backgroundColor->getAlpha() > 0) {
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throw new \Exception('PDF Writer does not support alpha channels');
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}
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if (isset($options[self::WRITER_OPTION_PDF])) {
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$fpdf = $options[self::WRITER_OPTION_PDF];
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if (!$fpdf instanceof \FPDF) {
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throw new \Exception('pdf option must be an instance of FPDF');
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}
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} else {
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// @todo Check how to add label height later
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$fpdf = new \FPDF('P', $unit, [$matrix->getOuterSize(), $matrix->getOuterSize() + $labelSpace]);
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$fpdf->AddPage();
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}
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$x = 0;
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if (isset($options[self::WRITER_OPTION_X])) {
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$x = $options[self::WRITER_OPTION_X];
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}
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$y = 0;
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if (isset($options[self::WRITER_OPTION_Y])) {
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$y = $options[self::WRITER_OPTION_Y];
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}
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$fpdf->SetFillColor($backgroundColor->getRed(), $backgroundColor->getGreen(), $backgroundColor->getBlue());
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$fpdf->Rect($x, $y, $matrix->getOuterSize(), $matrix->getOuterSize(), 'F');
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$fpdf->SetFillColor($foregroundColor->getRed(), $foregroundColor->getGreen(), $foregroundColor->getBlue());
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for ($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, $columnIndex)) {
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$fpdf->Rect(
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$x + $matrix->getMarginLeft() + ($columnIndex * $matrix->getBlockSize()),
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$y + $matrix->getMarginLeft() + ($rowIndex * $matrix->getBlockSize()),
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$matrix->getBlockSize(),
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$matrix->getBlockSize(),
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'F'
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);
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}
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}
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}
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if ($logo instanceof LogoInterface) {
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$this->addLogo($logo, $fpdf, $x, $y, $matrix->getOuterSize());
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}
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if ($label instanceof LabelInterface) {
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$fpdf->SetXY($x, $y + $matrix->getOuterSize() + $labelSpace - 25);
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$fpdf->SetFont('Helvetica', '', $label->getFont()->getSize());
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$fpdf->Cell($matrix->getOuterSize(), 0, $label->getText(), 0, 0, 'C');
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}
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if (isset($options[self::WRITER_OPTION_LINK])) {
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$link = $options[self::WRITER_OPTION_LINK];
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$fpdf->Link($x, $y, $x + $matrix->getOuterSize(), $y + $matrix->getOuterSize(), $link);
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}
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return new PdfResult($matrix, $fpdf);
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}
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private function addLogo(LogoInterface $logo, \FPDF $fpdf, float $x, float $y, float $size): void
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{
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$logoPath = $logo->getPath();
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$logoHeight = $logo->getResizeToHeight();
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$logoWidth = $logo->getResizeToWidth();
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if (null === $logoHeight || null === $logoWidth) {
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$imageSize = \getimagesize($logoPath);
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if (!$imageSize) {
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throw new \Exception(sprintf('Unable to read image size for logo "%s"', $logoPath));
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}
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[$logoSourceWidth, $logoSourceHeight] = $imageSize;
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if (null === $logoWidth) {
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$logoWidth = (int) $logoSourceWidth;
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}
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if (null === $logoHeight) {
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$aspectRatio = $logoWidth / $logoSourceWidth;
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$logoHeight = (int) ($logoSourceHeight * $aspectRatio);
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}
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}
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$logoX = $x + $size / 2 - $logoWidth / 2;
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$logoY = $y + $size / 2 - $logoHeight / 2;
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$fpdf->Image($logoPath, $logoX, $logoY, $logoWidth, $logoHeight);
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}
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}
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