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https://github.com/chillerlan/php-qrcode.git
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158 lines
4.5 KiB
PHP
158 lines
4.5 KiB
PHP
<?php
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/**
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* php-gd realization of QR code with rounded modules
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*
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* @see https://github.com/chillerlan/php-qrcode/pull/215
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* @see https://github.com/chillerlan/php-qrcode/issues/127
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*
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* @created 17.09.2023
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* @author livingroot
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* @copyright 2023 livingroot
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* @license MIT
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*
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* @noinspection PhpComposerExtensionStubsInspection
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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;
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use chillerlan\Settings\SettingsContainerInterface;
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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 QRGdRounded extends QRGdImagePNG{
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public function __construct(SettingsContainerInterface|QROptions|iterable $options, QRMatrix $matrix){
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if(is_iterable($options)){
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$options = new QROptions($options);
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}
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// enable the internal scaling for better rounding results at scale < 20
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// we need to do this before calling the parent constructor as these values are used there
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$options->gdImageUseUpscale = true;
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$options->drawCircularModules = true;
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parent::__construct($options, $matrix);
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}
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protected function module(int $x, int $y, int $M_TYPE):void{
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/**
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* The bit order (starting from 0):
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*
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* 0 1 2
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* 7 # 3
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* 6 5 4
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*/
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$neighbours = $this->matrix->checkNeighbours($x, $y);
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$x1 = ($x * $this->scale);
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$y1 = ($y * $this->scale);
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$x2 = (($x + 1) * $this->scale);
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$y2 = (($y + 1) * $this->scale);
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$rectsize = (int)($this->scale / 2);
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$light = $this->getModuleValue($M_TYPE);
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$dark = $this->getModuleValue($M_TYPE | QRMatrix::IS_DARK);
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// ------------------
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// Outer rounding
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// ------------------
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if(($neighbours & (1 << 7))){ // neighbour left
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// top left
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imagefilledrectangle($this->image, $x1, $y1, ($x1 + $rectsize), ($y1 + $rectsize), $light);
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// bottom left
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imagefilledrectangle($this->image, $x1, ($y2 - $rectsize), ($x1 + $rectsize), $y2, $light);
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}
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if(($neighbours & (1 << 3))){ // neighbour right
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// top right
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imagefilledrectangle($this->image, ($x2 - $rectsize), $y1, $x2, ($y1 + $rectsize), $light);
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// bottom right
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imagefilledrectangle($this->image, ($x2 - $rectsize), ($y2 - $rectsize), $x2, $y2, $light);
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}
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if(($neighbours & (1 << 1))){ // neighbour top
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// top left
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imagefilledrectangle($this->image, $x1, $y1, ($x1 + $rectsize), ($y1 + $rectsize), $light);
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// top right
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imagefilledrectangle($this->image, ($x2 - $rectsize), $y1, $x2, ($y1 + $rectsize), $light);
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}
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if(($neighbours & (1 << 5))){ // neighbour bottom
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// bottom left
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imagefilledrectangle($this->image, $x1, ($y2 - $rectsize), ($x1 + $rectsize), $y2, $light);
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// bottom right
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imagefilledrectangle($this->image, ($x2 - $rectsize), ($y2 - $rectsize), $x2, $y2, $light);
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}
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// ---------------------
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// inner rounding
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// ---------------------
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if(!$this->matrix->check($x, $y)){
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if(($neighbours & 1) && ($neighbours & (1 << 7)) && ($neighbours & (1 << 1))){
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// top left
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imagefilledrectangle($this->image, $x1, $y1, ($x1 + $rectsize), ($y1 + $rectsize), $dark);
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}
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if(($neighbours & (1 << 1)) && ($neighbours & (1 << 2)) && ($neighbours & (1 << 3))){
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// top right
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imagefilledrectangle($this->image, ($x2 - $rectsize), $y1, $x2, ($y1 + $rectsize), $dark);
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}
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if(($neighbours & (1 << 7)) && ($neighbours & (1 << 6)) && ($neighbours & (1 << 5))){
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// bottom left
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imagefilledrectangle($this->image, $x1, ($y2 - $rectsize), ($x1 + $rectsize), $y2, $dark);
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}
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if(($neighbours & (1 << 3)) && ($neighbours & (1 << 4)) && ($neighbours & (1 << 5))){
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// bottom right
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imagefilledrectangle($this->image, ($x2 - $rectsize), ($y2 - $rectsize), $x2, $y2, $dark);
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}
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}
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imagefilledellipse(
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$this->image,
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(int)($x * $this->scale + $this->scale / 2),
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(int)($y * $this->scale + $this->scale / 2),
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($this->scale - 1),
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($this->scale - 1),
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$light,
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);
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}
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}
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// --------------------
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// Example
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// --------------------
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$options = new QROptions([
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'version' => 7,
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'eccLevel' => EccLevel::H,
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'outputInterface' => QRGdRounded::class,
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'outputBase64' => false,
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'scale' => 30,
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'addLogoSpace' => true,
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'logoSpaceWidth' => 13,
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'logoSpaceHeight' => 13,
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]);
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$img = new QRCode($options)->render('https://www.youtube.com/watch?v=dQw4w9WgXcQ');
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header('Content-type: image/png');
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echo $img;
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