You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.6 KiB
104 lines
2.6 KiB
<?php |
|
/** |
|
* @copyright Copyright (c) 2016, ownCloud, Inc. |
|
* |
|
* @author Georg Ehrke <oc.list@georgehrke.com> |
|
* @author Joas Schilling <coding@schilljs.com> |
|
* @author Morris Jobke <hey@morrisjobke.de> |
|
* @author Nmz <nemesiz@nmz.lt> |
|
* @author Robin Appelman <robin@icewind.nl> |
|
* @author Thomas Müller <thomas.mueller@tmit.eu> |
|
* |
|
* @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; |
|
|
|
use OCP\Files\File; |
|
use OCP\Files\FileInfo; |
|
use OCP\IImage; |
|
|
|
class TXT extends ProviderV2 { |
|
/** |
|
* {@inheritDoc} |
|
*/ |
|
public function getMimeType(): string { |
|
return '/text\/plain/'; |
|
} |
|
|
|
/** |
|
* {@inheritDoc} |
|
*/ |
|
public function isAvailable(FileInfo $file): bool { |
|
return $file->getSize() > 0; |
|
} |
|
|
|
/** |
|
* {@inheritDoc} |
|
*/ |
|
public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage { |
|
$content = $file->fopen('r'); |
|
|
|
if ($content === false) { |
|
return null; |
|
} |
|
|
|
$content = stream_get_contents($content,3000); |
|
|
|
//don't create previews of empty text files |
|
if(trim($content) === '') { |
|
return null; |
|
} |
|
|
|
$lines = preg_split("/\r\n|\n|\r/", $content); |
|
|
|
// Define text size of text file preview |
|
$fontSize = $maxX ? (int) ((2 / 32) * $maxX) : 5; //5px |
|
$lineSize = ceil($fontSize * 1.5); |
|
|
|
$image = imagecreate($maxX, $maxY); |
|
imagecolorallocate($image, 255, 255, 255); |
|
$textColor = imagecolorallocate($image, 0, 0, 0); |
|
|
|
$fontFile = __DIR__; |
|
$fontFile .= '/../../../core'; |
|
$fontFile .= '/fonts/NotoSans-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; |
|
} |
|
} |
|
|
|
$imageObject = new \OC_Image(); |
|
$imageObject->setResource($image); |
|
|
|
return $imageObject->valid() ? $imageObject : null; |
|
} |
|
}
|
|
|