93 lines
2 KiB
PHP
93 lines
2 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Preview;
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class TXT extends Provider {
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public function getMimeType() {
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return '/text\/plain/';
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}
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/**
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* Check if a preview can be generated for $path
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*
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* @param \OC\Files\FileInfo $file
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* @return bool
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*/
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public function isAvailable($file) {
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return $file->getSize() > 5;
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}
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/**
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* @param string $path
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* @param int $maxX
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* @param int $maxY
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* @param boolean $scalingup
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* @param \OC\Files\View $fileview
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* @return bool|\OC_Image
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*/
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public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
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$content = $fileview->fopen($path, 'r');
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$content = stream_get_contents($content);
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//don't create previews of empty text files
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if(trim($content) === '') {
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return false;
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}
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$lines = preg_split("/\r\n|\n|\r/", $content);
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$fontSize = 5; //5px
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$lineSize = ceil($fontSize * 1.25);
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$image = imagecreate($maxX, $maxY);
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imagecolorallocate($image, 255, 255, 255);
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$textColor = imagecolorallocate($image, 0, 0, 0);
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$fontFile = __DIR__;
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$fontFile .= '/../../../core';
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$fontFile .= '/fonts/OpenSans-Regular.ttf';
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$canUseTTF = function_exists('imagettftext');
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foreach($lines as $index => $line) {
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$index = $index + 1;
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$x = (int) 1;
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$y = (int) ($index * $lineSize);
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if ($canUseTTF === true) {
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imagettftext($image, $fontSize, 0, $x, $y, $textColor, $fontFile, $line);
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} else {
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$y -= $fontSize;
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imagestring($image, 1, $x, $y, $line, $textColor);
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}
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if(($index * $lineSize) >= $maxY) {
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break;
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}
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}
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$image = new \OC_Image($image);
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return $image->valid() ? $image : false;
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}
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}
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\OC\Preview::registerProvider('OC\Preview\TXT');
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class MarkDown extends TXT {
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public function getMimeType() {
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return '/text\/(x-)?markdown/';
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}
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}
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\OC\Preview::registerProvider('OC\Preview\MarkDown');
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