/**
* Gets a thumbnail of the specified file
*
* @since API version 1.0
*
* @NoAdminRequired
* @NoCSRFRequired
*
* @param int $x
* @param int $y
* @param string $file
* @return JSONResponse|DownloadResponse
*/
public function getThumbnail($x, $y, $file)
{
if ($x < 1 || $y < 1) {
return new JSONResponse('Requested size must be numeric and a positive value.', Http::STATUS_BAD_REQUEST);
}
try {
$preview = new Preview('', 'files', $file, $x, $y, true);
echo $preview->showPreview('image/png');
return new DownloadResponse($file . '.png', 'image/png');
} catch (\Exception $e) {
return new JSONResponse('File not found.', Http::STATUS_NOT_FOUND);
}
}
/**
* Asks core for a preview based on our criteria
*
* @todo Need to read scaling setting from settings
*
* @param bool $keepAspect
*
* @return \OC_Image
*/
private function getPreviewFromCore($keepAspect)
{
list($maxX, $maxY) = $this->dims;
$this->preview->setMaxX($maxX);
$this->preview->setMaxY($maxY);
$this->preview->setScalingUp(false);
$this->preview->setKeepAspect($keepAspect);
//$this->logger->debug("[PreviewService] preview {preview}", ['preview' => $this->preview]);
$previewData = $this->preview->getPreview();
return $previewData;
}
/**
* Asks core for a preview based on our criteria
*
* @todo Need to read scaling setting from settings
*
* @param bool $keepAspect
*
* @return \OC_Image
*/
private function getPreviewFromCore($keepAspect)
{
//$this->logger->debug("[PreviewService] Fetching the preview");
list($maxX, $maxY) = $this->dims;
$this->preview->setMaxX($maxX);
$this->preview->setMaxY($maxY);
$this->preview->setScalingUp(false);
$this->preview->setKeepAspect($keepAspect);
//$this->logger->debug("[PreviewService] preview {preview}", ['preview' => $this->preview]);
try {
// Can generate encryption Exceptions...
$previewData = $this->preview->getPreview();
} catch (\Exception $exception) {
return null;
}
return $previewData;
}
<video tabindex="0" controls="" preload="none">
<source src="<?php
p($_['downloadURL']);
?>
" type="<?php
p($_['mimetype']);
?>
" />
</video>
</div>
<?php
} else {
?>
<div id="imgframe">
<?php
$size = \OC\Preview::isMimeSupported($_['mimetype']) ? 500 : 128;
?>
<img
src="<?php
p(OCP\Util::linkToRoute('core_ajax_public_preview', array('x' => $size, 'y' => $size, 'file' => $_['directory_path'], 't' => $_['dirToken'])));
?>
"
class="publicpreview"
alt="" />
</div>
<?php
}
?>
<div class="directDownload">
<a href="<?php
p($_['downloadURL']);
return '/image\\/svg\\+xml/';
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
{
try {
$svg = new Imagick();
$svg->setBackgroundColor(new \ImagickPixel('transparent'));
$content = stream_get_contents($fileview->fopen($path, 'r'));
if (substr($content, 0, 5) !== '<?xml') {
$content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content;
}
// Do not parse SVG files with references
if (stripos($content, 'xlink:href') !== false) {
return false;
}
$svg->readImageBlob($content);
$svg->setImageFormat('png32');
} catch (\Exception $e) {
\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
return false;
}
//new image object
$image = new \OC_Image();
$image->loadFromData($svg);
//check if image object is valid
return $image->valid() ? $image : false;
}
}
\OC\Preview::registerProvider('OC\\Preview\\SVG');
}
}
}
$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);
foreach ($lines as $index => $line) {
$index = $index + 1;
$x = (int) 1;
$y = (int) ($index * $lineSize) - $fontSize;
imagestring($image, 1, $x, $y, $line, $textColor);
if ($index * $lineSize >= $maxY) {
break;
}
}
$image = new \OC_Image($image);
return $image->valid() ? $image : false;
}
}
\OC\Preview::registerProvider('OC\\Preview\\TXT');
class MarkDown extends TXT
{
public function getMimeType()
{
return '/text\\/(x-)?markdown/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\MarkDown');
{
// TODO: use proc_open() and stream the source file ?
$absPath = \OC_Helper::tmpFile();
$tmpPath = \OC_Helper::tmpFile();
$handle = $fileview->fopen($path, 'rb');
// we better use 5MB (1024 * 1024 * 5 = 5242880) instead of 1MB.
// in some cases 1MB was no enough to generate thumbnail
$firstmb = stream_get_contents($handle, 5242880);
file_put_contents($absPath, $firstmb);
if (self::$avconvBinary) {
$cmd = self::$avconvBinary . ' -an -y -ss 5' . ' -i ' . escapeshellarg($absPath) . ' -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) . ' > /dev/null 2>&1';
} else {
$cmd = self::$ffmpegBinary . ' -y -ss 5' . ' -i ' . escapeshellarg($absPath) . ' -f mjpeg -vframes 1' . ' -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) . ' ' . escapeshellarg($tmpPath) . ' > /dev/null 2>&1';
}
exec($cmd, $output, $returnCode);
unlink($absPath);
if ($returnCode === 0) {
$image = new \OC_Image();
$image->loadFromFile($tmpPath);
unlink($tmpPath);
return $image->valid() ? $image : false;
}
return false;
}
}
// a bit hacky but didn't want to use subclasses
Movie::$avconvBinary = $avconvBinary;
Movie::$ffmpegBinary = $ffmpegBinary;
\OC\Preview::registerProvider('OC\\Preview\\Movie');
}
}
public function getMimeType()
{
return '/application\\/illustrator/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\Illustrator');
}
// Requires adding 'eps' => array('application/postscript', null), to lib/private/mimetypes.list.php
if (count($checkImagick->queryFormats('EPS')) === 1) {
//.eps
class Postscript extends Bitmap
{
public function getMimeType()
{
return '/application\\/postscript/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\Postscript');
}
if (count($checkImagick->queryFormats('PSD')) === 1) {
//.psd
class Photoshop extends Bitmap
{
public function getMimeType()
{
return '/application\\/x-photoshop/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\Photoshop');
}
}
class Image extends Provider
{
public function getMimeType()
{
return '/image\\/(?!tiff$)(?!svg.*).*/';
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
{
//get fileinfo
$fileInfo = $fileview->getFileInfo($path);
if (!$fileInfo) {
return false;
}
$maxSizeForImages = \OC::$server->getConfig()->getSystemValue('preview_max_filesize_image', 50);
$size = $fileInfo->getSize();
if ($maxSizeForImages !== -1 && $size > $maxSizeForImages * 1024 * 1024) {
return false;
}
$image = new \OC_Image();
if ($fileInfo['encrypted'] === true) {
$fileName = $fileview->toTmpFile($path);
} else {
$fileName = $fileview->getLocalFile($path);
}
$image->loadFromFile($fileName);
return $image->valid() ? $image : false;
}
}
\OC\Preview::registerProvider('OC\\Preview\\Image');
/**
* @brief returns true if the passed mime type is supported
* @param string $mimeType
* @return boolean
*/
function isMimeSupported($mimeType = '*')
{
return \OC\Preview::isMimeSupported($mimeType);
}
<?php
$l = OC_L10N::get('files_opds');
require 'files_opds/lib/epub-preview.php';
\OCP\App::registerPersonal('files_opds', 'personal');
\OCP\App::registerAdmin('files_opds', 'admin');
/* register preview provider */
\OC\Preview::registerProvider('OC\\Preview\\Epub');
/**
* @param $filePath User/files/....
* @return string
*/
public static function prevImg($filePath)
{
// $filePath = 'files/Photos/Paris.jpg';
//$preview = \OC::$server->getPreviewManager()->createPreview($filePath, 128, 128, true);
$conf = explode('/files/', $filePath);
$preview = new Preview($conf[0], '/', 'files/' . $conf[1], 128, 128, true);
$resp = new DataDisplayResponse($preview->getPreview()->data(), Http::STATUS_OK, ['Content-Type' => 'image/png']);
$src = 'data: ' . $preview->getPreview()->mimeType() . ';base64,' . base64_encode($resp->render());
return $src;
}
{
return '/.*/';
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
{
$mimetype = $fileview->getMimeType($path);
$path = \OC_Helper::mimetypeIcon($mimetype);
$path = \OC::$SERVERROOT . substr($path, strlen(\OC::$WEBROOT));
$svgPath = substr_replace($path, 'svg', -3);
if (extension_loaded('imagick') && file_exists($svgPath) && count(@\Imagick::queryFormats("SVG")) === 1) {
// http://www.php.net/manual/de/imagick.setresolution.php#85284
$svg = new \Imagick();
$svg->readImage($svgPath);
$res = $svg->getImageResolution();
$x_ratio = $res['x'] / $svg->getImageWidth();
$y_ratio = $res['y'] / $svg->getImageHeight();
$svg->removeImage();
$svg->setResolution($maxX * $x_ratio, $maxY * $y_ratio);
$svg->setBackgroundColor(new \ImagickPixel('transparent'));
$svg->readImage($svgPath);
$svg->setImageFormat('png32');
$image = new \OC_Image();
$image->loadFromData($svg);
} else {
$image = new \OC_Image($path);
}
return $image;
}
}
\OC\Preview::registerProvider('OC\\Preview\\Unknown');
/**
* Check if a preview can be generated for a file
*
* @param \OC\Files\FileInfo $file
* @return bool
*/
function isAvailable($file)
{
return \OC\Preview::isAvailable($file);
}
use Imagick;
if (extension_loaded('imagick')) {
$checkImagick = new Imagick();
if (count($checkImagick->queryFormats('TIFF')) === 1) {
class TIFF extends Provider
{
public function getMimeType()
{
return '/image\\/tiff/';
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
{
$tmpPath = $fileview->toTmpFile($path);
//create imagick object from TIFF
try {
$tiff = new Imagick($tmpPath);
$tiff->setImageFormat('png');
} catch (\Exception $e) {
\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
return false;
}
unlink($tmpPath);
//new image object
$image = new \OC_Image($tiff);
//check if image object is valid
return $image->valid() ? $image : false;
}
}
\OC\Preview::registerProvider('OC\\Preview\\TIFF');
}
}
}
}
\OC\Preview::registerProvider('OC\\Preview\\MSOffice2003');
//.docx, .dotx, .xlsx, .xltx, .pptx, .potx, .ppsx
class MSOffice2007 extends Office
{
public function getMimeType()
{
return '/application\\/vnd.openxmlformats-officedocument.*/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\MSOffice2007');
//.odt, .ott, .oth, .odm, .odg, .otg, .odp, .otp, .ods, .ots, .odc, .odf, .odb, .odi, .oxt
class OpenDocument extends Office
{
public function getMimeType()
{
return '/application\\/vnd.oasis.opendocument.*/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\OpenDocument');
//.sxw, .stw, .sxc, .stc, .sxd, .std, .sxi, .sti, .sxg, .sxm
class StarOffice extends Office
{
public function getMimeType()
{
return '/application\\/vnd.sun.xml.*/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\StarOffice');
}
OCP\Util::addScript('files', 'jquery.iframe-transport');
OCP\Util::addScript('files', 'jquery.fileupload');
// JS required for folders
OCP\Util::addStyle('files', 'files');
OCP\Util::addStyle('files', 'upload');
OCP\Util::addScript('files', 'filesummary');
OCP\Util::addScript('files', 'breadcrumb');
OCP\Util::addScript('files', 'files');
OCP\Util::addScript('files', 'filelist');
OCP\Util::addscript('files', 'keyboardshortcuts');
$thumbSize = 1024;
$previewSupported = OC\Preview::isMimeSupported($_['mimetype']) ? 'true' : 'false';
?>
<?php
if (\OC\Preview::isMimeSupported($_['mimetype'])) {
/* This enables preview images for links (e.g. on Facebook, Google+, ...)*/
?>
<link rel="image_src" href="<?php
p(OCP\Util::linkToRoute('core_ajax_public_preview', array('x' => $thumbSize, 'y' => $thumbSize, 'file' => $_['directory_path'], 't' => $_['dirToken'])));
?>
" />
<?php
}
?>
<div id="notification-container">
<div id="notification" style="display: none;"></div>
</div>
<input type="hidden" id="filesApp" name="filesApp" value="1">
foreach ($iter as $item) {
if (is_file($item)) {
$fileInfo = new SplFileInfo($item);
// Is this an image ?
$imgExt = strtolower($fileInfo->getExtension());
if (in_array($imgExt, $fetchExt)) {
// get file name without $userDir
$shortFileName = substr($item, strlen($userDir));
// workaround for jpg == jpeg for showPreview method
if ($imgExt === 'jpg') {
$imgExt = 'jpeg';
}
// to check if preview exists on disk
$fileView = new \OC\Files\View('/' . $user . '/' . $currentDir);
$id = $fileView->getFileInfo($shortFileName)->getId();
// For each size
for ($x = 0; $x < $max_sf; $x++) {
// Generates missing thumbnails
if (!file_exists($datadir . '/' . $user . '/thumbnails/' . $id . '/' . $sizes[$x][0] . '-' . $sizes[$x][1] . '.png')) {
$preview = new Preview($user, $currentDir, $shortFileName, $sizes[$x][0], $sizes[$x][1], true);
$preview->showPreview('image/' . $imgExt);
}
}
}
}
}
}
}
?>
public static function post_delete($args, $prefix = '')
{
$path = Files\Filesystem::normalizePath($args['path']);
$preview = new Preview(\OC_User::getUser(), $prefix, $path);
$preview->deleteAllPreviews();
}
class XLS extends MSOfficeExcel
{
public function getMimeType()
{
return '/application\\/vnd.ms-excel/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\XLS');
class XLSX extends MSOfficeExcel
{
public function getMimeType()
{
return '/application\\/vnd.openxmlformats-officedocument.spreadsheetml.sheet/';
}
}
\OC\Preview::registerProvider('OC\\Preview\\XLSX');
/* //There is no (good) php-only solution for converting powerpoint documents to pdfs / pngs ...
class MSOfficePowerPoint extends Provider {
public function getMimeType() {
return null;
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
return false;
}
}
class PPT extends MSOfficePowerPoint {