mirror of
https://github.com/chillerlan/php-qrcode.git
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smiley
73 lines
2.0 KiB
PHP
73 lines
2.0 KiB
PHP
<?php
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/**
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* Class QRSvgWithLogo
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*
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* @created 05.03.2022
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* @author smiley <smiley@chillerlan.net>
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* @copyright 2022 smiley
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* @license MIT
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*/
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namespace chillerlan\QRCodeExamples;
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use chillerlan\QRCode\Output\QRMarkup;
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use function file_get_contents, sprintf;
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/**
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* Create SVG QR Codes with embedded logos (that are also SVG)
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*/
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class QRSvgWithLogo extends QRMarkup{
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/**
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* SVG output
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*
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* @see https://github.com/codemasher/php-qrcode/pull/5
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* @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/svg
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* @see https://www.sarasoueidan.com/demos/interactive-svg-coordinate-system/
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*/
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protected function svg(bool $saveToFile):string{
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$size = (int)ceil($this->moduleCount * $this->options->svgLogoScale);
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// we're calling QRMatrix::setLogoSpace() manually, so QROptions::$addLogoSpace has no effect here
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$this->matrix->setLogoSpace($size, $size);
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$svg = $this->svgHeader();
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if(!empty($this->options->svgDefs)){
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$svg .= sprintf('<defs>%1$s%2$s</defs>%2$s', $this->options->svgDefs, $this->options->eol);
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}
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$svg .= $this->svgPaths();
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$svg .= $this->getLogo();
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// close svg
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$svg .= sprintf('%1$s</svg>%1$s', $this->options->eol);
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// transform to data URI only when not saving to file
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if(!$saveToFile && $this->options->imageBase64){
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$svg = $this->base64encode($svg, 'image/svg+xml');
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}
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return $svg;
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}
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/**
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* returns a <g> element that contains the SVG logo and positions it properly within the QR Code
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*
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* @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/g
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* @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/transform
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*/
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protected function getLogo():string{
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// @todo: customize the <g> element to your liking (css class, style...)
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return sprintf(
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'%5$s<g transform="translate(%1$s %1$s) scale(%2$s)" class="%3$s">%5$s %4$s%5$s</g>',
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($this->moduleCount - ($this->moduleCount * $this->options->svgLogoScale)) / 2,
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$this->options->svgLogoScale,
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$this->options->svgLogoCssClass,
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file_get_contents($this->options->svgLogo),
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$this->options->eol
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);
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}
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}
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