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<?php |
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/** |
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* This file is part of the Cecil/Cecil package. |
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* |
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* Copyright (c) Arnaud Ligny <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Cecil\Converter; |
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use Cecil\Assets\Image; |
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use Cecil\Builder; |
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use Cecil\Util; |
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use ParsedownExtra; |
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class Parsedown extends ParsedownExtra |
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{ |
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/** @var Builder */ |
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private $builder; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __construct(Builder $builder) |
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{ |
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parent::__construct(); |
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$this->builder = $builder; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function inlineImage($excerpt) |
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{ |
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$image = parent::inlineImage($excerpt); |
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if (!isset($image)) { |
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return null; |
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} |
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$path = Util::joinFile( |
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$this->builder->getConfig()->getStaticTargetPath(), |
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ltrim($image['element']['attributes']['src']) |
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); |
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if (Util::isExternalUrl($image['element']['attributes']['src'])) { |
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$path = $image['element']['attributes']['src']; |
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} |
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$width = $height = null; |
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list($width, $height, $type) = getimagesize($this->removeQuery($path)); |
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// sets default attributes |
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$image['element']['attributes']['width'] = $width; |
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if ($type !== null) { |
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$image['element']['attributes']['loading'] = 'lazy'; |
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} |
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// captures query string. |
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// ie: "?resize=300&responsive" |
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$query = parse_url($image['element']['attributes']['src'], PHP_URL_QUERY); |
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if ($query === null) { |
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return $image; |
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} |
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parse_str($query, $result); |
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// cleans URL |
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$image['element']['attributes']['src'] = $this->removeQuery($image['element']['attributes']['src']); |
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$path = Util::joinFile( |
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$this->builder->getConfig()->getStaticTargetPath(), |
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ltrim($image['element']['attributes']['src']) |
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); |
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if (Util::isExternalUrl($image['element']['attributes']['src'])) { |
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$path = $image['element']['attributes']['src']; |
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} |
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$width = $height = null; |
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list($width, $height, $type) = getimagesize($path); |
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/** |
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* Should be responsive? |
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*/ |
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$responsive = false; |
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if (array_key_exists('responsive', $result) && !Util::isExternalUrl($image['element']['attributes']['src'])) { |
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$responsive = true; |
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// process |
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$steps = 5; |
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$wMin = 320; |
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$wMax = 2560; |
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if ($width < $wMax) { |
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$wMax = $width; |
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} |
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$srcset = ''; |
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for ($i = 1; $i <= $steps; $i++) { |
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$w = (int) ceil($wMin + ($wMax - $wMin) / $steps * $i); |
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$img = (new Image($this->builder))->resize($image['element']['attributes']['src'], $w); |
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$srcset .= sprintf('%s %sw', $img, $w); |
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if ($i < $steps) { |
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$srcset .= ', '; |
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} |
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} |
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// ie: srcset="/img-480.jpg 480w, img-800.jpg 800w" |
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$image['element']['attributes']['srcset'] = $srcset; |
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} |
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/** |
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* Should be resized? |
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*/ |
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if (array_key_exists('resize', $result)) { |
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$size = (int) $result['resize']; |
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$width = $size; |
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$imageResized = (new Image($this->builder)) |
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->resize($image['element']['attributes']['src'], $size); |
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if (Util::isExternalUrl($image['element']['attributes']['src'])) { |
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return $image; |
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} |
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$image['element']['attributes']['src'] = $imageResized; |
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$path = Util::joinPath( |
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$this->builder->getConfig()->getOutputPath(), |
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ltrim($image['element']['attributes']['src']) |
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); |
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list($width) = getimagesize($path); |
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$image['element']['attributes']['width'] = $width; |
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} |
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// if responsive: set 'sizes' attribute |
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if ($responsive) { |
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// sizes="(max-width: 2800px) 100vw, 2800px" |
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$image['element']['attributes']['sizes'] = sprintf('(max-width: %spx) 100vw, %spx', $width, $width); |
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} |
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// set 'class' attribute |
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if (array_key_exists('class', $result)) { |
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$class = $result['class']; |
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$class = strtr($class, ',', ' '); |
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$image['element']['attributes']['class'] = $class; |
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} |
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return $image; |
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} |
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private function removeQuery(string $path): string |
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{ |
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return strtok($path, '?'); |
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} |
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} |
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Cecilapp /
Cecil
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