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78 lines
2.0 KiB
78 lines
2.0 KiB
<?php |
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/** |
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* @copyright Copyright (c) 2016, ownCloud, Inc. |
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* |
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* @author Georg Ehrke <oc.list@georgehrke.com> |
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* @author Joas Schilling <coding@schilljs.com> |
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* @author Olivier Paroz <github@oparoz.com> |
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* @author Roeland Jago Douma <roeland@famdouma.nl> |
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* |
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* @license AGPL-3.0 |
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* |
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* This code is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License, version 3, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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namespace OC\Preview; |
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use OCP\IImage; |
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use OCP\ILogger; |
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use OCP\Files\File; |
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class SVG extends ProviderV2 { |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getMimeType(): string { |
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return '/image\/svg\+xml/'; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage { |
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try { |
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$svg = new \Imagick(); |
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$svg->setBackgroundColor(new \ImagickPixel('transparent')); |
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$content = stream_get_contents($file->fopen('r')); |
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if (substr($content, 0, 5) !== '<?xml') { |
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$content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content; |
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} |
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// Do not parse SVG files with references |
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if (stripos($content, 'xlink:href') !== false) { |
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return null; |
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} |
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$svg->readImageBlob($content); |
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$svg->setImageFormat('png32'); |
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} catch (\Exception $e) { |
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\OC::$server->getLogger()->logException($e, [ |
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'level' => ILogger::ERROR, |
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'app' => 'core', |
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]); |
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return null; |
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} |
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//new image object |
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$image = new \OC_Image(); |
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$image->loadFromData($svg); |
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//check if image object is valid |
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if ($image->valid()) { |
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$image->scaleDownToFit($maxX, $maxY); |
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return $image; |
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} |
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return null; |
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} |
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}
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