<?php
namespace HeroQR\Core\Writers;
use Endroid\QrCode\{Label\LabelInterface,
Logo\LogoInterface,
QrCodeInterface,
Writer\Result\GdResult,
Writer\Result\PngResult,
Writer\Result\ResultInterface};
use HeroQR\Contracts\Customs\Writer\AbstractPngWriter;
/**
* Writes QR codes as PNG with custom options
*
* Extends the base PNG writer to allow optional compression and
* handles embedding logos and labels in the QR code
*/
readonly class CustomPngWriter extends AbstractPngWriter
{
public const WRITER_OPTION_COMPRESSION_LEVEL = 'compression_level';
/**
* Generates an PNG QR code with optional logo, label, and customization options
*
* @param QrCodeInterface $qrCode QR Code instance to render
* @param LogoInterface|null $logo Optional logo to embed in the QR code
* @param LabelInterface|null $label Optional label to add to the QR code
* @param array $options Optional PNG flags (compression level and...)
* @return ResultInterface PNG result of the QR code
* @throws \Exception
*/
public function write(
QrCodeInterface $qrCode,
?LogoInterface $logo = null,
?LabelInterface $label = null,
array $options = []
): ResultInterface
{
$options[self::WRITER_OPTION_COMPRESSION_LEVEL] = $options[self::WRITER_OPTION_COMPRESSION_LEVEL] ?? 1;
/**
* @var GdResult $gdResult
*/
$gdResult = parent::write($qrCode, $logo, $label, $options);
return new PngResult(
$gdResult->getMatrix(),
$gdResult->getImage(),
$options[self::WRITER_OPTION_COMPRESSION_LEVEL]
);
}
}
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