mirror of
https://github.com/chillerlan/php-qrcode.git
synced 2026-08-17 18:41:04 +00:00
smiley
111 lines
2.6 KiB
PHP
111 lines
2.6 KiB
PHP
<?php
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/**
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* ImageMagick with image as background example
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*
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* @created 08.09.2023
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* @author smiley <smiley@chillerlan.net>
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* @copyright 2023 smiley
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* @license MIT
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*/
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use chillerlan\QRCode\{QRCode, QRCodeException, QROptions};
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use chillerlan\QRCode\Common\EccLevel;
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use chillerlan\QRCode\Output\QRImagick;
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require_once __DIR__.'/../vendor/autoload.php';
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class QRImagickImageAsBackground extends QRImagick{
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/**
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* @inheritDoc
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*/
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protected function getDefaultModuleValue(bool $isDark):ImagickPixel{
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// RGBA, adjust opacity to increase contrast
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return $this->prepareModuleValue(($isDark) ? '#00000040' : '#ffffffa0');
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}
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/**
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* @inheritDoc
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*/
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protected function createImage():Imagick{
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$imagick = new Imagick($this->options->background);
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$width = $imagick->getImageWidth();
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$height = $imagick->getImageHeight();
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// crop the background if necessary
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if(($width / $height) !== 1){
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$cropsize = ($width > $height) ? $height : $width;
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$imagick->cropImage($cropsize, $cropsize, 0, 0);
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}
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// scale the background to fit the size of the QR Code
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if($imagick->getImageWidth() !== $this->length){
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$imagick->scaleImage($this->length, $this->length, true);
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}
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if($this->options->quality > -1){
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$imagick->setImageCompressionQuality(max(0, min(100, $this->options->quality)));
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}
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return $imagick;
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}
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}
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/**
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* augment the QROptions class
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*/
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class ImageAsBackgroundOptions extends QROptions{
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protected string $background;
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/**
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* check background image
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*
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* @throws \chillerlan\QRCode\QRCodeException
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*/
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protected function set_background(string $background):void{
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if(!file_exists($background) || !is_file($background) || !is_readable($background)){
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throw new QRCodeException('invalid background file');
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}
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// @todo: check/validate desired image format
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$this->background = $background;
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}
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}
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/*
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* Runtime
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*/
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$options = new ImageAsBackgroundOptions;
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$options->background = __DIR__.'/background.jpg'; // setting from the augmented options
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$options->version = 5;
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$options->outputInterface = QRImagickImageAsBackground::class; // use the custom output class
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$options->eccLevel = EccLevel::H;
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$options->outputBase64 = false;
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$options->scale = 10;
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$options->drawLightModules = true;
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$options->svgUseFillAttributes = false;
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$options->invertMatrix = false;
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$options->quietzoneSize = 1;
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// dump the output, with an additional logo
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$out = (new QRCode($options))->render('https://www.youtube.com/watch?v=dQw4w9WgXcQ');
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if(PHP_SAPI !== 'cli'){
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header('Content-type: image/png');
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echo $out;
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}
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exit;
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