1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
class TXT extends Provider {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/text\/plain/';
}
/**
* {@inheritDoc}
*/
public function isAvailable($file) {
return $file->getSize() > 5;
}
/**
* {@inheritDoc}
*/
public function getThumbnail($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 = 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;
}
}
|
