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<?php declare(strict_types = 1); namespace BaconQrCode\Renderer; use BaconQrCode\Encoder\MatrixUtil; use BaconQrCode\Encoder\QrCode; use BaconQrCode\Exception\InvalidArgumentException; use BaconQrCode\Renderer\Image\ImageBackEndInterface; use BaconQrCode\Renderer\Path\Path; use BaconQrCode\Renderer\RendererStyle\EyeFill; use BaconQrCode\Renderer\RendererStyle\RendererStyle; final class ImageRenderer implements RendererInterface { /** * @var RendererStyle */ private $rendererStyle; /** * @var ImageBackEndInterface */ private $imageBackEnd; public function __construct(RendererStyle $rendererStyle, ImageBackEndInterface $imageBackEnd) { $this->rendererStyle = $rendererStyle; $this->imageBackEnd = $imageBackEnd; } /** * @throws InvalidArgumentException if matrix width doesn't match height */ public function render(QrCode $qrCode) : string { $size = $this->rendererStyle->getSize(); $margin = $this->rendererStyle->getMargin(); $matrix = $qrCode->getMatrix(); $matrixSize = $matrix->getWidth(); if ($matrixSize !== $matrix->getHeight()) { throw new InvalidArgumentException('Matrix must have the same width and height'); } $totalSize = $matrixSize + ($margin * 2); $moduleSize = $size / $totalSize; $fill = $this->rendererStyle->getFill(); $this->imageBackEnd->new($size, $fill->getBackgroundColor()); $this->imageBackEnd->scale((float) $moduleSize); $this->imageBackEnd->translate((float) $margin, (float) $margin); $module = $this->rendererStyle->getModule(); $moduleMatrix = clone $matrix; MatrixUtil::removePositionDetectionPatterns($moduleMatrix); $modulePath = $this->drawEyes($matrixSize, $module->createPath($moduleMatrix)); if ($fill->hasGradientFill()) { $this->imageBackEnd->drawPathWithGradient( $modulePath, $fill->getForegroundGradient(), 0, 0, $matrixSize, $matrixSize ); } else { $this->imageBackEnd->drawPathWithColor($modulePath, $fill->getForegroundColor()); } return $this->imageBackEnd->done(); } private function drawEyes(int $matrixSize, Path $modulePath) : Path { $fill = $this->rendererStyle->getFill(); $eye = $this->rendererStyle->getEye(); $externalPath = $eye->getExternalPath(); $internalPath = $eye->getInternalPath(); $modulePath = $this->drawEye( $externalPath, $internalPath, $fill->getTopLeftEyeFill(), 3.5, 3.5, 0, $modulePath ); $modulePath = $this->drawEye( $externalPath, $internalPath, $fill->getTopRightEyeFill(), $matrixSize - 3.5, 3.5, 90, $modulePath ); $modulePath = $this->drawEye( $externalPath, $internalPath, $fill->getBottomLeftEyeFill(), 3.5, $matrixSize - 3.5, -90, $modulePath ); return $modulePath; } private function drawEye( Path $externalPath, Path $internalPath, EyeFill $fill, float $xTranslation, float $yTranslation, int $rotation, Path $modulePath ) : Path { if ($fill->inheritsBothColors()) { return $modulePath ->append($externalPath->translate($xTranslation, $yTranslation)) ->append($internalPath->translate($xTranslation, $yTranslation)); } $this->imageBackEnd->push(); $this->imageBackEnd->translate($xTranslation, $yTranslation); if (0 !== $rotation) { $this->imageBackEnd->rotate($rotation); } if ($fill->inheritsExternalColor()) { $modulePath = $modulePath->append($externalPath->translate($xTranslation, $yTranslation)); } else { $this->imageBackEnd->drawPathWithColor($externalPath, $fill->getExternalColor()); } if ($fill->inheritsInternalColor()) { $modulePath = $modulePath->append($internalPath->translate($xTranslation, $yTranslation)); } else { $this->imageBackEnd->drawPathWithColor($internalPath, $fill->getInternalColor()); } $this->imageBackEnd->pop(); return $modulePath; } }