/**
* Erzeugt Thumbnail einer Datei
* Bisher implementiert:
* - PNG
* - JPG
* - GIF
* - PDF
* - OpenOffice Doc odt
* @param \AppBundle\Entity\File $file [description]
* @return [type] [description]
*/
public function createThumbnail(\AppBundle\Entity\File $file)
{
#print __METHOD__;
#print $file->getMimeType();
#die;
switch ($file->getMimeType()) {
case 'application/pdf':
// sudo apt-get install imagemagick ghostscript
$filename = sha1(uniqid(mt_rand(), true)) . '.png';
$cmd = sprintf('convert -thumbnail 200x -background white -alpha remove "%s[0]" "%s"', $this->storage . $file->getPath() . '/' . $file->getFilename(), $this->thumbnailsPath . $filename);
exec($cmd, $output, $return_var);
if ($return_var != 0) {
print "FEHLER BEIM ERZEUGEN DES THUMBNAILS " . __METHOD__;
} else {
$file->setThumbnail($filename);
}
break;
case 'application/vnd.oasis.opendocument.text':
// https://wiki.ubuntuusers.de/OpenDocument_Thumbnails/
$filename = sha1(uniqid(mt_rand(), true)) . '.png';
$cmd = sprintf('/usr/bin/gsf-office-thumbnailer -i "%s" -o "%s" -s 800', $this->storage . $file->getPath() . '/' . $file->getFilename(), $this->thumbnailsPath . $filename);
exec($cmd, $output, $return_var);
if ($return_var != 0) {
print "FEHLER BEIM ERZEUGEN DES THUMBNAILS " . __METHOD__;
} else {
$source_image = imagecreatefrompng($this->thumbnailsPath . $filename);
$this->_makeThumbnail($file, $source_image, 200);
unlink($this->thumbnailsPath . $filename);
}
break;
case 'image/png':
$src = $this->storage . $file->getPath() . '/' . $file->getFilename();
$source_image = imagecreatefrompng($src);
$this->_makeThumbnail($file, $source_image, 200);
break;
case 'image/jpeg':
$src = $this->storage . $file->getPath() . '/' . $file->getFilename();
$source_image = imagecreatefromjpeg($src);
$this->_makeThumbnail($file, $source_image, 200);
break;
case 'image/gif':
$src = $this->storage . $file->getPath() . '/' . $file->getFilename();
$source_image = imagecreatefromgif($src);
$this->_makeThumbnail($file, $source_image, 200);
break;
}
}
