vendor/endroid/qr-code/src/Writer/PdfWriter.php line 21

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  1. <?php
  3. declare(strict_types=1);
  5. namespace Endroid\QrCode\Writer;
  7. use Endroid\QrCode\Bacon\MatrixFactory;
  8. use Endroid\QrCode\Label\LabelInterface;
  9. use Endroid\QrCode\Logo\LogoInterface;
  10. use Endroid\QrCode\QrCodeInterface;
  11. use Endroid\QrCode\Writer\Result\PdfResult;
  12. use Endroid\QrCode\Writer\Result\ResultInterface;
  14. final class PdfWriter implements WriterInterface
  15. {
  16. public const WRITER_OPTION_UNIT = 'unit';
  17. public const WRITER_OPTION_PDF = 'fpdf';
  18. public const WRITER_OPTION_X = 'x';
  19. public const WRITER_OPTION_Y = 'y';
  21. public function write(QrCodeInterface $qrCode, LogoInterface $logo = null, LabelInterface $label = null, array $options = []): ResultInterface
  22. {
  23. $matrixFactory = new MatrixFactory();
  24. $matrix = $matrixFactory->create($qrCode);
  26. $unit = 'mm';
  27. if (isset($options[self::WRITER_OPTION_UNIT])) {
  28. $unit = $options[self::WRITER_OPTION_UNIT];
  29. }
  31. $allowedUnits = ['mm', 'pt', 'cm', 'in'];
  32. if (!in_array($unit, $allowedUnits)) {
  33. throw new \Exception(sprintf('PDF Measure unit should be one of [%s]', implode(', ', $allowedUnits)));
  34. }
  36. $labelSpace = 0;
  37. if ($label instanceof LabelInterface) {
  38. $labelSpace = 30;
  39. }
  41. if (!class_exists(\FPDF::class)) {
  42. throw new \Exception('Unable to find FPDF: check your installation');
  43. }
  45. $foregroundColor = $qrCode->getForegroundColor();
  46. if ($foregroundColor->getAlpha() > 0) {
  47. throw new \Exception('PDF Writer does not support alpha channels');
  48. }
  49. $backgroundColor = $qrCode->getBackgroundColor();
  50. if ($backgroundColor->getAlpha() > 0) {
  51. throw new \Exception('PDF Writer does not support alpha channels');
  52. }
  54. if (isset($options[self::WRITER_OPTION_PDF])) {
  55. $fpdf = $options[self::WRITER_OPTION_PDF];
  56. if (!$fpdf instanceof \FPDF) {
  57. throw new \Exception('pdf option must be an instance of FPDF');
  58. }
  59. } else {
  60. // @todo Check how to add label height later
  61. $fpdf = new \FPDF('P', $unit, [$matrix->getOuterSize(), $matrix->getOuterSize() + $labelSpace]);
  62. $fpdf->AddPage();
  63. }
  65. $x = 0;
  66. if (isset($options[self::WRITER_OPTION_X])) {
  67. $x = $options[self::WRITER_OPTION_X];
  68. }
  69. $y = 0;
  70. if (isset($options[self::WRITER_OPTION_Y])) {
  71. $y = $options[self::WRITER_OPTION_Y];
  72. }
  74. $fpdf->SetFillColor($backgroundColor->getRed(), $backgroundColor->getGreen(), $backgroundColor->getBlue());
  75. $fpdf->Rect($x, $y, $matrix->getOuterSize(), $matrix->getOuterSize(), 'F');
  76. $fpdf->SetFillColor($foregroundColor->getRed(), $foregroundColor->getGreen(), $foregroundColor->getBlue());
  78. for ($rowIndex = 0; $rowIndex < $matrix->getBlockCount(); ++$rowIndex) {
  79. for ($columnIndex = 0; $columnIndex < $matrix->getBlockCount(); ++$columnIndex) {
  80. if (1 === $matrix->getBlockValue($rowIndex, $columnIndex)) {
  81. $fpdf->Rect(
  82. $x + $matrix->getMarginLeft() + ($columnIndex * $matrix->getBlockSize()),
  83. $y + $matrix->getMarginLeft() + ($rowIndex * $matrix->getBlockSize()),
  84. $matrix->getBlockSize(),
  85. $matrix->getBlockSize(),
  86. 'F'
  87. );
  88. }
  89. }
  90. }
  92. if ($logo instanceof LogoInterface) {
  93. $this->addLogo($logo, $fpdf, $x, $y, $matrix->getOuterSize());
  94. }
  96. if ($label instanceof LabelInterface) {
  97. $fpdf->SetXY($x, $y + $matrix->getOuterSize() + $labelSpace - 25);
  98. $fpdf->SetFont('Helvetica', '', $label->getFont()->getSize());
  99. $fpdf->Cell($matrix->getOuterSize(), 0, $label->getText(), 0, 0, 'C');
  100. }
  102. return new PdfResult($matrix, $fpdf);
  103. }
  105. private function addLogo(LogoInterface $logo, \FPDF $fpdf, float $x, float $y, float $size): void
  106. {
  107. $logoPath = $logo->getPath();
  108. $logoHeight = $logo->getResizeToHeight();
  109. $logoWidth = $logo->getResizeToWidth();
  111. if (null === $logoHeight || null === $logoWidth) {
  112. $imageSize = \getimagesize($logoPath);
  113. if (!$imageSize) {
  114. throw new \Exception(sprintf('Unable to read image size for logo "%s"', $logoPath));
  115. }
  116. [$logoSourceWidth, $logoSourceHeight] = $imageSize;
  118. if (null === $logoWidth) {
  119. $logoWidth = (int) $logoSourceWidth;
  120. }
  122. if (null === $logoHeight) {
  123. $aspectRatio = $logoWidth / $logoSourceWidth;
  124. $logoHeight = (int) ($logoSourceHeight * $aspectRatio);
  125. }
  126. }
  128. $logoX = $x + $size / 2 - $logoWidth / 2;
  129. $logoY = $y + $size / 2 - $logoHeight / 2;
  131. $fpdf->Image($logoPath, $logoX, $logoY, $logoWidth, $logoHeight);
  132. }
  133. }