71 lines
1.8 KiB
PHP
71 lines
1.8 KiB
PHP
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<?php
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/**
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* Copyright (c) 2013 Frank Karlitschek frank@owncloud.org
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* Copyrigjt (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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class OC_Preview_Image extends OC_Preview_Provider{
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public function getMimeType(){
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return '/image\/.*/';
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}
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public static function getThumbnail($path,$maxX,$maxY,$scalingup) {
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$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
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// is a preview already in the cache?
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if ($thumbnails_view->file_exists($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup)) {
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return new \OC_Image($thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup));
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}
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// does the sourcefile exist?
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if (!\OC_Filesystem::file_exists($path)) {
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\OC_Log::write('Preview', 'File '.$path.' don\'t exists', \OC_Log::WARN);
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return false;
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}
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// open the source image
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$image = new \OC_Image();
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$image->loadFromFile(\OC_Filesystem::getLocalFile($path));
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if (!$image->valid()) return false;
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// fix the orientation
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$image->fixOrientation();
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// calculate the right preview size
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$Xsize=$image->width();
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$Ysize=$image->height();
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if (($Xsize/$Ysize)>($maxX/$maxY)) {
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$factor=$maxX/$Xsize;
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} else {
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$factor=$maxY/$Ysize;
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}
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// only scale up if requested
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if($scalingup==false) {
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if($factor>1) $factor=1;
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}
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$newXsize=$Xsize*$factor;
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$newYsize=$Ysize*$factor;
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// resize
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$ret = $image->preciseResize($newXsize, $newYsize);
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if (!$ret) {
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\OC_Log::write('Preview', 'Couldn\'t resize image', \OC_Log::ERROR);
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unset($image);
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return false;
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}
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// store in cache
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$l = $thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup);
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$image->save($l);
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return $image;
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}
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}
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OC_Preview::registerProvider('OC_Preview_Image');
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