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<?php |
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/** |
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* Class QRMarkupSVG |
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* |
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* @created 06.06.2022 |
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* @author smiley <[email protected]> |
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* @copyright 2022 smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\QRCode\Output; |
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use chillerlan\QRCode\Data\QRMatrix; |
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use function array_chunk, implode, sprintf; |
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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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* @see http://apex.infogridpacific.com/SVG/svg-tutorial-contents.html |
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*/ |
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class QRMarkupSVG extends QRMarkup{ |
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/** |
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* @inheritDoc |
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*/ |
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protected function createMarkup(bool $saveToFile):string{ |
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$svg = $this->header(); |
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if(!empty($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 .= $this->paths(); |
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// close svg |
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$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 = $this->toBase64DataURI($svg, 'image/svg+xml'); |
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} |
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return $svg; |
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} |
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/** |
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* returns the <svg> header with the given options parsed |
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*/ |
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protected function header():string{ |
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$width = $this->options->svgWidth !== null ? sprintf(' width="%s"', $this->options->svgWidth) : ''; |
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$height = $this->options->svgHeight !== null ? sprintf(' height="%s"', $this->options->svgHeight) : ''; |
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/** @noinspection HtmlUnknownAttribute */ |
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return sprintf( |
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'<?xml version="1.0" encoding="UTF-8"?>%6$s'. |
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'<svg xmlns="http://www.w3.org/2000/svg" class="qr-svg %1$s" viewBox="0 0 %2$s %2$s" preserveAspectRatio="%3$s"%4$s%5$s>%6$s', |
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$this->options->cssClass, |
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$this->options->svgViewBoxSize ?? $this->moduleCount, |
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$this->options->svgPreserveAspectRatio, |
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$width, |
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$height, |
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$this->options->eol |
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); |
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} |
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/** |
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* returns one or more SVG <path> elements |
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*/ |
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protected function paths():string{ |
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$paths = $this->collectModules(fn(int $x, int $y, int $M_TYPE):string => $this->module($x, $y, $M_TYPE)); |
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$svg = []; |
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// create the path elements |
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foreach($paths as $M_TYPE => $modules){ |
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// limit the total line length |
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$chunks = array_chunk($modules, 100); |
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$chonks = []; |
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foreach($chunks as $chunk){ |
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$chonks[] = implode(' ', $chunk); |
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} |
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$path = implode($this->options->eol, $chonks); |
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if(empty($path)){ |
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continue; |
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} |
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$svg[] = $this->path($path, $M_TYPE); |
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} |
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return implode($this->options->eol, $svg); |
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} |
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/** |
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* renders and returns a single <path> element |
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* |
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* @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/path |
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*/ |
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protected function path(string $path, int $M_TYPE):string{ |
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// ignore non-existent module values |
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$format = !isset($this->moduleValues[$M_TYPE]) || empty($this->moduleValues[$M_TYPE]) |
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? '<path class="%1$s" d="%2$s"/>' |
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: '<path class="%1$s" fill="%3$s" fill-opacity="%4$s" d="%2$s"/>'; |
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return sprintf( |
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$format, |
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$this->getCssClass($M_TYPE), |
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$path, |
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$this->moduleValues[$M_TYPE] ?? '', // value may or may not exist |
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$this->options->svgOpacity |
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); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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protected function getCssClass(int $M_TYPE):string{ |
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return implode(' ', [ |
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'qr-'.$M_TYPE, |
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($M_TYPE & QRMatrix::IS_DARK) === QRMatrix::IS_DARK ? 'dark' : 'light', |
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$this->options->cssClass, |
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]); |
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} |
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/** |
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* returns a path segment for a single module |
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* |
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* @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d |
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*/ |
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protected function module(int $x, int $y, int $M_TYPE):string{ |
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if(!$this->options->drawLightModules && !$this->matrix->check($x, $y)){ |
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return ''; |
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} |
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if($this->options->drawCircularModules && $this->matrix->checkTypeNotIn($x, $y, $this->options->keepAsSquare)){ |
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$r = $this->options->circleRadius; |
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return sprintf( |
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'M%1$s %2$s a%3$s %3$s 0 1 0 %4$s 0 a%3$s %3$s 0 1 0 -%4$s 0Z', |
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($x + 0.5 - $r), |
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($y + 0.5), |
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$r, |
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($r * 2) |
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); |
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} |
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return sprintf('M%1$s %2$s h1 v1 h-1Z', $x, $y); |
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} |
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} |
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chillerlan /
php-qrcode
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