mirror of
https://github.com/chillerlan/php-qrcode.git
synced 2026-08-17 10:32:12 +00:00
smiley
117 lines
3.0 KiB
PHP
117 lines
3.0 KiB
PHP
<?php
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/**
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* GdImage with logo output example
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*
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* @created 18.11.2020
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* @author smiley <smiley@chillerlan.net>
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* @copyright 2020 smiley
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* @license MIT
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*
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* @noinspection PhpComposerExtensionStubsInspection, PhpIllegalPsrClassPathInspection
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*/
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declare(strict_types=1);
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use chillerlan\QRCode\{QRCode, QROptions};
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use chillerlan\QRCode\Common\EccLevel;
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use chillerlan\QRCode\Data\QRMatrix;
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use chillerlan\QRCode\Output\{QRGdImagePNG, QRCodeOutputException};
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require_once __DIR__.'/../vendor/autoload.php';
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/*
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* Class definition
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*/
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class QRImageWithLogo extends QRGdImagePNG{
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/**
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* @throws \chillerlan\QRCode\Output\QRCodeOutputException
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*/
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public function dump(string|null $file = null, string|null $logo = null):string{
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$logo ??= '';
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// set returnResource to true to skip further processing for now
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$this->options->returnResource = true;
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// of course, you could accept other formats too (such as resource or Imagick)
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// I'm not checking for the file type either for simplicity reasons (assuming PNG)
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if(!is_file($logo) || !is_readable($logo)){
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throw new QRCodeOutputException('invalid logo');
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}
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// there's no need to save the result of dump() into $this->image here
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parent::dump($file);
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$im = imagecreatefrompng($logo);
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if($im === false){
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throw new QRCodeOutputException('imagecreatefrompng() error');
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}
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// get logo image size
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$w = imagesx($im);
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$h = imagesy($im);
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// set new logo size, leave a border of 1 module (no proportional resize/centering)
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$lw = (($this->options->logoSpaceWidth - 2) * $this->options->scale);
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$lh = (($this->options->logoSpaceHeight - 2) * $this->options->scale);
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// get the qrcode size
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$ql = ($this->matrix->moduleCount * $this->options->scale);
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// scale the logo and copy it over. done!
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imagecopyresampled($this->image, $im, (($ql - $lw) / 2), (($ql - $lh) / 2), 0, 0, $lw, $lh, $w, $h);
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$imageData = $this->dumpImage();
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$this->saveToFile($imageData, $file);
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if($this->options->outputBase64){
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$imageData = $this->toBase64DataURI($imageData);
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}
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return $imageData;
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}
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}
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/*
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* Runtime
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*/
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$options = new QROptions;
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$options->version = 5;
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$options->outputBase64 = false;
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$options->scale = 6;
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$options->imageTransparent = false;
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$options->drawCircularModules = true;
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$options->circleRadius = 0.45;
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$options->keepAsSquare = [
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QRMatrix::M_FINDER,
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QRMatrix::M_FINDER_DOT,
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];
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// ecc level H is required for logo space
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$options->eccLevel = EccLevel::H;
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$options->addLogoSpace = true;
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$options->logoSpaceWidth = 13;
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$options->logoSpaceHeight = 13;
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$qrcode = new QRCode($options);
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$qrcode->addByteSegment('https://github.com');
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$qrOutputInterface = new QRImageWithLogo($options, $qrcode->getQRMatrix());
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// dump the output, with an additional logo
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// the logo could also be supplied via the options, see the svgWithLogo example
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$out = $qrOutputInterface->dump(null, __DIR__.'/octocat.png');
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header('Content-type: image/png');
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echo $out;
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exit;
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