<?php /** * @author Georg Ehrke <georg@owncloud.com> * @author Joas Schilling <nickvergessen@owncloud.com> * @author Morris Jobke <hey@morrisjobke.de> * @author Nmz <nemesiz@nmz.lt> * @author Robin Appelman <icewind@owncloud.com> * @author Thomas Müller <thomas.mueller@tmit.eu> * * @copyright Copyright (c) 2016, ownCloud, Inc. * @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/> * */ namespace OC\Preview; class TXT extends Provider { /** * {@inheritDoc} */ public function getMimeType() { return '/text\/plain/'; } /** * {@inheritDoc} */ public function isAvailable(\OCP\Files\FileInfo $file) { return $file->getSize() > 0; } /** * {@inheritDoc} */ public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) { $content = $fileview->fopen($path, 'r'); $content = stream_get_contents($content,3000); //don't create previews of empty text files if(trim($content) === '') { return false; } $lines = preg_split("/\r\n|\n|\r/", $content); $fontSize = ($maxX) ? (int) ((5 / 32) * $maxX) : 5; //5px $lineSize = ceil($fontSize * 1.25); $image = imagecreate($maxX, $maxY); imagecolorallocate($image, 255, 255, 255); $textColor = imagecolorallocate($image, 0, 0, 0); $fontFile = __DIR__; $fontFile .= '/../../../core'; $fontFile .= '/fonts/OpenSans-Regular.ttf'; $canUseTTF = function_exists('imagettftext'); foreach($lines as $index => $line) { $index = $index + 1; $x = (int) 1; $y = (int) ($index * $lineSize); if ($canUseTTF === true) { imagettftext($image, $fontSize, 0, $x, $y, $textColor, $fontFile, $line); } else { $y -= $fontSize; imagestring($image, 1, $x, $y, $line, $textColor); } if(($index * $lineSize) >= $maxY) { break; } } $image = new \OC_Image($image); return $image->valid() ? $image : false; } }