mirror of
https://github.com/chillerlan/php-qrcode.git
synced 2026-08-19 23:30:13 +00:00
codemasher
71 lines
1.9 KiB
PHP
71 lines
1.9 KiB
PHP
<?php
|
|
/**
|
|
* Class QRImageWithLogo
|
|
*
|
|
* @created 18.11.2020
|
|
* @author smiley <smiley@chillerlan.net>
|
|
* @copyright 2020 smiley
|
|
* @license MIT
|
|
*
|
|
* @noinspection PhpComposerExtensionStubsInspection
|
|
*/
|
|
|
|
namespace chillerlan\QRCodeExamples;
|
|
|
|
use chillerlan\QRCode\Output\{QRGdImage, QRCodeOutputException};
|
|
|
|
use function imagecopyresampled, imagecreatefrompng, imagesx, imagesy, is_file, is_readable;
|
|
|
|
class QRImageWithLogo extends QRGdImage{
|
|
|
|
/**
|
|
* @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');
|
|
}
|
|
|
|
// 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 = $this->base64encode($imageData, 'image/'.$this->options->outputType);
|
|
}
|
|
|
|
return $imageData;
|
|
}
|
|
|
|
}
|