nextcloud/lib/private/Preview/Image.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Georg Ehrke <oc.list@georgehrke.com>
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* @author Joas Schilling <coding@schilljs.com>
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* @author josh4trunks <joshruehlig@gmail.com>
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* @author Olivier Paroz <github@oparoz.com>
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* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Tanghus <thomas@tanghus.net>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* 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;
use OCP\Files\File;
use OCP\IImage;
abstract class Image extends ProviderV2 {
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/**
* {@inheritDoc}
*/
public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
$maxSizeForImages = \OC::$server->getConfig()->getSystemValue('preview_max_filesize_image', 50);
$size = $file->getSize();
if ($maxSizeForImages !== -1 && $size > ($maxSizeForImages * 1024 * 1024)) {
return null;
}
$image = new \OC_Image();
$fileName = $this->getLocalFile($file);
$image->loadFromFile($fileName);
$image->fixOrientation();
$this->cleanTmpFiles();
if ($image->valid()) {
$image->scaleDownToFit($maxX, $maxY);
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return $image;
}
return null;
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}
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}