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82 lines
2.2 KiB
82 lines
2.2 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 Arthur Schiwon <blizzz@arthur-schiwon.de>
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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 Morris Jobke <hey@morrisjobke.de>
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* @author Olivier Paroz <github@oparoz.com>
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* @author Robin Appelman <robin@icewind.nl>
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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\Files\File;
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use OCP\IImage;
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use OCP\ILogger;
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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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