save current work state

lib/preview.php

@@ -205,7 +205,7 @@ class OC_Preview {
 		if(empty(self::$providers)){
 			self::initProviders();
 		}
-		if(is_null(self::$thumbnailsview) || is_null(self::$userlandview)){
+		if(is_null(self::$fileview)){
 			self::initViews();
 		}
 	}
@@ -247,11 +247,37 @@ class OC_Preview {
 	*/
 	private static function initViews(){
 		if(is_null(self::$fileview)){
-			self::$fileview = new OC\Files\View();
+			//does this work with LDAP?
+			self::$fileview = new OC\Files\View(OC_User::getUser());
 		}
 	}
 	
 	public static function previewRouter($params){
-		var_dump($params);
+		self::init();
+		
+		$file = (string) urldecode($_GET['file']);
+		$maxX = (int) $_GET['x'];
+		$maxY = (int) $_GET['y'];
+		$scalingup = (bool) $_GET['scalingup'];
+		
+		$path = 'files/' . $file;
+		
+		if($maxX === 0 || $maxY === 0){
+			OC_Log::write('core', 'Can not create preview with 0px width or 0px height', OC_Log::DEBUG);
+			exit;
+		}
+		
+		var_dump(self::$fileview->file_exists($path));
+		var_dump(self::$fileview->getDirectoryContent());
+		var_dump(self::$fileview->getDirectoryContent('files/'));
+		var_dump($path);
+		var_dump(self::$fileview->filesize($path));
+		var_dump(self::$fileview->getAbsolutePath('/'));
+		
+		if(!self::$fileview->filesize($path)){
+			OC_Response::setStatus(OC_Response::STATUS_NOT_FOUND);
+		}
+		
+		self::showPreview($file, $maxX, $maxY, $scalingup);
 	}
 }

lib/preview/images.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Copyright (c) 2013 Frank Karlitschek frank@owncloud.org
+ * Copyrigjt (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.
+ */
+class OC_Preview_Image extends OC_Preview_Provider{
+
+	public function getMimeType(){
+		return '/image\/.*/';
+	}
+	
+	public static function getThumbnail($path,$maxX,$maxY,$scalingup) {
+
+		$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
+
+		// is a preview already in the cache?
+		if ($thumbnails_view->file_exists($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup)) {
+			return new \OC_Image($thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup));
+		}
+
+		// does the sourcefile exist?
+		if (!\OC_Filesystem::file_exists($path)) {
+				\OC_Log::write('Preview', 'File '.$path.' don\'t exists', \OC_Log::WARN);
+				return false;
+		}
+
+		// open the source image
+		$image = new \OC_Image();
+		$image->loadFromFile(\OC_Filesystem::getLocalFile($path));
+		if (!$image->valid()) return false;
+
+		// fix the orientation
+		$image->fixOrientation();
+
+		// calculate the right preview size
+		$Xsize=$image->width();
+		$Ysize=$image->height();
+		if (($Xsize/$Ysize)>($maxX/$maxY)) {
+				$factor=$maxX/$Xsize;
+		} else {
+				$factor=$maxY/$Ysize;
+		}
+
+		// only scale up if requested
+		if($scalingup==false) {
+				if($factor>1) $factor=1;
+		}
+		$newXsize=$Xsize*$factor;
+		$newYsize=$Ysize*$factor;
+
+		// resize
+		$ret = $image->preciseResize($newXsize, $newYsize);
+		if (!$ret) {
+				\OC_Log::write('Preview', 'Couldn\'t resize image', \OC_Log::ERROR);
+				unset($image);
+				return false;
+		}
+
+		// store in cache
+		$l = $thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup);
+		$image->save($l);
+
+		return $image;
+	}
+
+}
+
+OC_Preview::registerProvider('OC_Preview_Image');

lib/preview/movies.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Copyright (c) 2013 Frank Karlitschek frank@owncloud.org
+ * Copyrigjt (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.
+ */
+if(!is_null(shell_exec('ffmpeg'))){
+
+	class OC_Preview_Movie extends OC_Preview_Provider{
+
+		public function getMimeType(){
+			return '/video\/.*/';
+		}
+		
+		public static function getThumbnail($path,$maxX,$maxY,$scalingup) {
+				$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
+
+				// is a preview already in the cache?
+				if ($thumbnails_view->file_exists($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup)) {
+						return new \OC_Image($thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup));
+				}
+
+				// does the sourcefile exist?
+				if (!\OC_Filesystem::file_exists($path)) {
+						\OC_Log::write('Preview', 'File '.$path.' don\'t exists', \OC_Log::WARN);
+						return false;
+				}
+
+				// call ffmpeg to do the screenshot
+				shell_exec('ffmpeg -y  -i {'.escapeshellarg($path).'} -f mjpeg -vframes 1 -ss 1 -s {'.escapeshellarg($maxX).'}x{'.escapeshellarg($maxY).'} {.'.$thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup).'}');
+
+				// output the generated Preview
+				$thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup);
+				unset($thumbnails_view);
+		}
+
+	}
+
+	OC_Preview::registerProvider('OC_Preview_Movie');
+}

lib/preview/mp3.php

@@ -0,0 +1 @@
+///audio\/mpeg/

lib/preview/provider.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * provides search functionalty
+ */
+abstract class OC_Preview_Provider{
+	private $options;
+
+	public function __construct($options) {
+		$this->options=$options;
+	}
+	
+	abstract public function getMimeType();
+
+	/**
+	 * search for $query
+	 * @param string $query
+	 * @return
+	 */
+	abstract public function getThumbnail($path, $maxX, $maxY, $scalingup);
+}

lib/preview/unknown.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Copyright (c) 2013 Frank Karlitschek frank@owncloud.org
+ * Copyrigjt (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.
+ */
+class OC_Preview_Unknown extends OC_Preview_Provider{
+
+	public function getMimeType(){
+		return '/.*/';
+	}
+
+	public static function getThumbnail($maxX,$maxY) {	
+		// check if GD is installed
+		if(!extension_loaded('gd') || !function_exists('gd_info')) {
+			OC_Log::write('preview', __METHOD__.'(): GD module not installed', OC_Log::ERROR);
+			return false;
+		}
+	
+		// create a white image
+		$image = imagecreatetruecolor($maxX, $maxY);
+		$color = imagecolorallocate($image, 255, 255, 255);
+		imagefill($image, 0, 0, $color);
+	
+		// output the image
+		imagepng($image);
+		imagedestroy($image);
+	}
+
+}
+
+OC_Preview::registerProvider('OC_Preview_Unknown');