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Diffstat (limited to 'vendor/chillerlan/php-qrcode/examples/QRImageWithLogo.php')
-rw-r--r-- | vendor/chillerlan/php-qrcode/examples/QRImageWithLogo.php | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/vendor/chillerlan/php-qrcode/examples/QRImageWithLogo.php b/vendor/chillerlan/php-qrcode/examples/QRImageWithLogo.php new file mode 100644 index 000000000..76aa5ced7 --- /dev/null +++ b/vendor/chillerlan/php-qrcode/examples/QRImageWithLogo.php @@ -0,0 +1,81 @@ +<?php +/** + * Class QRImageWithLogo + * + * @filesource QRImageWithLogo.php + * @created 18.11.2020 + * @package chillerlan\QRCodeExamples + * @author smiley <smiley@chillerlan.net> + * @copyright 2020 smiley + * @license MIT + * + * @noinspection PhpComposerExtensionStubsInspection + */ + +namespace chillerlan\QRCodeExamples; + +use chillerlan\QRCode\Output\{QRCodeOutputException, QRImage}; + +use function imagecopyresampled, imagecreatefrompng, imagesx, imagesy, is_file, is_readable; + +/** + * @property \chillerlan\QRCodeExamples\LogoOptions $options + */ +class QRImageWithLogo extends QRImage{ + + /** + * @param string|null $file + * @param string|null $logo + * + * @return string + * @throws \chillerlan\QRCode\Output\QRCodeOutputException + */ + public function dump(string $file = null, string $logo = null):string{ + // set returnResource to true to skip further processing for now + $this->options->returnResource = true; + + // of course you could accept other formats too (such as resource or Imagick) + // i'm not checking for the file type either for simplicity reasons (assuming PNG) + if(!is_file($logo) || !is_readable($logo)){ + throw new QRCodeOutputException('invalid logo'); + } + + $this->matrix->setLogoSpace( + $this->options->logoSpaceWidth, + $this->options->logoSpaceHeight + // not utilizing the position here + ); + + // there's no need to save the result of dump() into $this->image here + parent::dump($file); + + $im = imagecreatefrompng($logo); + + // get logo image size + $w = imagesx($im); + $h = imagesy($im); + + // set new logo size, leave a border of 1 module (no proportional resize/centering) + $lw = ($this->options->logoSpaceWidth - 2) * $this->options->scale; + $lh = ($this->options->logoSpaceHeight - 2) * $this->options->scale; + + // get the qrcode size + $ql = $this->matrix->size() * $this->options->scale; + + // scale the logo and copy it over. done! + imagecopyresampled($this->image, $im, ($ql - $lw) / 2, ($ql - $lh) / 2, 0, 0, $lw, $lh, $w, $h); + + $imageData = $this->dumpImage(); + + if($file !== null){ + $this->saveToFile($imageData, $file); + } + + if($this->options->imageBase64){ + $imageData = 'data:image/'.$this->options->outputType.';base64,'.base64_encode($imageData); + } + + return $imageData; + } + +} |