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