diff options
Diffstat (limited to 'lib/private/preview.php')
-rwxr-xr-x | lib/private/preview.php | 311 |
1 files changed, 185 insertions, 126 deletions
diff --git a/lib/private/preview.php b/lib/private/preview.php index ff93f438f73..0c1af3c9588 100755 --- a/lib/private/preview.php +++ b/lib/private/preview.php @@ -42,6 +42,10 @@ class Preview { private $scalingup; private $mimetype; + //filemapper used for deleting previews + // index is path, value is fileinfo + static public $deleteFileMapper = array(); + //preview images object /** * @var \OC_Image @@ -53,6 +57,11 @@ class Preview { static private $registeredProviders = array(); /** + * @var \OCP\Files\FileInfo + */ + protected $info; + + /** * @brief check if thumbnail or bigger version of thumbnail of file is cached * @param string $user userid - if no user is given, OC_User::getUser will be used * @param string $root path of root @@ -61,12 +70,12 @@ class Preview { * @param int $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image * @param bool $scalingUp Disable/Enable upscaling of previews * @return mixed (bool / string) - * false if thumbnail does not exist - * path to thumbnail if thumbnail exists - */ - public function __construct($user='', $root='/', $file='', $maxX=1, $maxY=1, $scalingUp=true) { + * false if thumbnail does not exist + * path to thumbnail if thumbnail exists + */ + public function __construct($user = '', $root = '/', $file = '', $maxX = 1, $maxY = 1, $scalingUp = true) { //init fileviews - if($user === ''){ + if ($user === '') { $user = \OC_User::getUser(); } $this->fileView = new \OC\Files\View('/' . $user . '/' . $root); @@ -86,11 +95,11 @@ class Preview { $this->preview = null; //check if there are preview backends - if(empty(self::$providers)) { + if (empty(self::$providers)) { self::initProviders(); } - if(empty(self::$providers)) { + if (empty(self::$providers)) { \OC_Log::write('core', 'No preview providers exist', \OC_Log::ERROR); throw new \Exception('No preview providers'); } @@ -99,15 +108,15 @@ class Preview { /** * @brief returns the path of the file you want a thumbnail from * @return string - */ - public function getFile() { + */ + public function getFile() { return $this->file; } /** * @brief returns the max width of the preview * @return integer - */ + */ public function getMaxX() { return $this->maxX; } @@ -115,7 +124,7 @@ class Preview { /** * @brief returns the max height of the preview * @return integer - */ + */ public function getMaxY() { return $this->maxY; } @@ -123,7 +132,7 @@ class Preview { /** * @brief returns whether or not scalingup is enabled * @return bool - */ + */ public function getScalingUp() { return $this->scalingup; } @@ -131,44 +140,59 @@ class Preview { /** * @brief returns the name of the thumbnailfolder * @return string - */ + */ public function getThumbnailsFolder() { return self::THUMBNAILS_FOLDER; } /** * @brief returns the max scale factor - * @return integer - */ + * @return string + */ public function getMaxScaleFactor() { return $this->maxScaleFactor; } /** * @brief returns the max width set in ownCloud's config - * @return integer - */ + * @return string + */ public function getConfigMaxX() { return $this->configMaxX; } /** * @brief returns the max height set in ownCloud's config - * @return integer - */ + * @return string + */ public function getConfigMaxY() { return $this->configMaxY; } + protected function getFileInfo() { + $absPath = $this->fileView->getAbsolutePath($this->file); + $absPath = Files\Filesystem::normalizePath($absPath); + if(array_key_exists($absPath, self::$deleteFileMapper)) { + $this->info = self::$deleteFileMapper[$absPath]; + } else if (!$this->info) { + $this->info = $this->fileView->getFileInfo($this->file); + } + return $this->info; + } + /** * @brief set the path of the file you want a thumbnail from * @param string $file * @return $this - */ + */ public function setFile($file) { $this->file = $file; + $this->info = null; if ($file !== '') { - $this->mimetype = $this->fileView->getMimeType($this->file); + $this->getFileInfo(); + if($this->info !== null && $this->info !== false) { + $this->mimetype = $this->info->getMimetype(); + } } return $this; } @@ -185,14 +209,14 @@ class Preview { * @brief set the the max width of the preview * @param int $maxX * @return $this - */ - public function setMaxX($maxX=1) { - if($maxX <= 0) { + */ + public function setMaxX($maxX = 1) { + if ($maxX <= 0) { throw new \Exception('Cannot set width of 0 or smaller!'); } $configMaxX = $this->getConfigMaxX(); - if(!is_null($configMaxX)) { - if($maxX > $configMaxX) { + if (!is_null($configMaxX)) { + if ($maxX > $configMaxX) { \OC_Log::write('core', 'maxX reduced from ' . $maxX . ' to ' . $configMaxX, \OC_Log::DEBUG); $maxX = $configMaxX; } @@ -205,14 +229,14 @@ class Preview { * @brief set the the max height of the preview * @param int $maxY * @return $this - */ - public function setMaxY($maxY=1) { - if($maxY <= 0) { + */ + public function setMaxY($maxY = 1) { + if ($maxY <= 0) { throw new \Exception('Cannot set height of 0 or smaller!'); } $configMaxY = $this->getConfigMaxY(); - if(!is_null($configMaxY)) { - if($maxY > $configMaxY) { + if (!is_null($configMaxY)) { + if ($maxY > $configMaxY) { \OC_Log::write('core', 'maxX reduced from ' . $maxY . ' to ' . $configMaxY, \OC_Log::DEBUG); $maxY = $configMaxY; } @@ -225,9 +249,9 @@ class Preview { * @brief set whether or not scalingup is enabled * @param bool $scalingUp * @return $this - */ + */ public function setScalingup($scalingUp) { - if($this->getMaxScaleFactor() === 1) { + if ($this->getMaxScaleFactor() === 1) { $scalingUp = false; } $this->scalingup = $scalingUp; @@ -237,15 +261,15 @@ class Preview { /** * @brief check if all parameters are valid * @return bool - */ + */ public function isFileValid() { $file = $this->getFile(); - if($file === '') { + if ($file === '') { \OC_Log::write('core', 'No filename passed', \OC_Log::DEBUG); return false; } - if(!$this->fileView->file_exists($file)) { + if (!$this->fileView->file_exists($file)) { \OC_Log::write('core', 'File:"' . $file . '" not found', \OC_Log::DEBUG); return false; } @@ -256,40 +280,44 @@ class Preview { /** * @brief deletes previews of a file with specific x and y * @return bool - */ + */ public function deletePreview() { $file = $this->getFile(); - $fileInfo = $this->fileView->getFileInfo($file); - $fileId = $fileInfo['fileid']; + $fileInfo = $this->getFileInfo($file); + if($fileInfo !== null && $fileInfo !== false) { + $fileId = $fileInfo->getId(); - $previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/' . $this->getMaxX() . '-' . $this->getMaxY() . '.png'; - $this->userView->unlink($previewPath); - return !$this->userView->file_exists($previewPath); + $previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/' . $this->getMaxX() . '-' . $this->getMaxY() . '.png'; + return $this->userView->unlink($previewPath); + } + return false; } /** * @brief deletes all previews of a file * @return bool - */ + */ public function deleteAllPreviews() { $file = $this->getFile(); - $fileInfo = $this->fileView->getFileInfo($file); - $fileId = $fileInfo['fileid']; + $fileInfo = $this->getFileInfo($file); + if($fileInfo !== null && $fileInfo !== false) { + $fileId = $fileInfo->getId(); - $previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/'; - $this->userView->deleteAll($previewPath); - $this->userView->rmdir($previewPath); - return !$this->userView->is_dir($previewPath); + $previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/'; + $this->userView->deleteAll($previewPath); + return $this->userView->rmdir($previewPath); + } + return false; } /** * @brief check if thumbnail or bigger version of thumbnail of file is cached * @return mixed (bool / string) - * false if thumbnail does not exist - * path to thumbnail if thumbnail exists - */ + * false if thumbnail does not exist + * path to thumbnail if thumbnail exists + */ private function isCached() { $file = $this->getFile(); $maxX = $this->getMaxX(); @@ -297,75 +325,75 @@ class Preview { $scalingUp = $this->getScalingUp(); $maxScaleFactor = $this->getMaxScaleFactor(); - $fileInfo = $this->fileView->getFileInfo($file); - $fileId = $fileInfo['fileid']; + $fileInfo = $this->getFileInfo($file); + $fileId = $fileInfo->getId(); - if(is_null($fileId)) { + if (is_null($fileId)) { return false; } $previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/'; - if(!$this->userView->is_dir($previewPath)) { + if (!$this->userView->is_dir($previewPath)) { return false; } //does a preview with the wanted height and width already exist? - if($this->userView->file_exists($previewPath . $maxX . '-' . $maxY . '.png')) { + if ($this->userView->file_exists($previewPath . $maxX . '-' . $maxY . '.png')) { return $previewPath . $maxX . '-' . $maxY . '.png'; } - $wantedAspectRatio = (float) ($maxX / $maxY); + $wantedAspectRatio = (float)($maxX / $maxY); //array for usable cached thumbnails $possibleThumbnails = array(); $allThumbnails = $this->userView->getDirectoryContent($previewPath); - foreach($allThumbnails as $thumbnail) { + foreach ($allThumbnails as $thumbnail) { $name = rtrim($thumbnail['name'], '.png'); $size = explode('-', $name); - $x = (int) $size[0]; - $y = (int) $size[1]; + $x = (int)$size[0]; + $y = (int)$size[1]; - $aspectRatio = (float) ($x / $y); - if($aspectRatio !== $wantedAspectRatio) { + $aspectRatio = (float)($x / $y); + if ($aspectRatio !== $wantedAspectRatio) { continue; } - if($x < $maxX || $y < $maxY) { - if($scalingUp) { + if ($x < $maxX || $y < $maxY) { + if ($scalingUp) { $scalefactor = $maxX / $x; - if($scalefactor > $maxScaleFactor) { + if ($scalefactor > $maxScaleFactor) { continue; } - }else{ + } else { continue; } } $possibleThumbnails[$x] = $thumbnail['path']; } - if(count($possibleThumbnails) === 0) { + if (count($possibleThumbnails) === 0) { return false; } - if(count($possibleThumbnails) === 1) { + if (count($possibleThumbnails) === 1) { return current($possibleThumbnails); } ksort($possibleThumbnails); - if(key(reset($possibleThumbnails)) > $maxX) { + if (key(reset($possibleThumbnails)) > $maxX) { return current(reset($possibleThumbnails)); } - if(key(end($possibleThumbnails)) < $maxX) { + if (key(end($possibleThumbnails)) < $maxX) { return current(end($possibleThumbnails)); } - foreach($possibleThumbnails as $width => $path) { - if($width < $maxX) { + foreach ($possibleThumbnails as $width => $path) { + if ($width < $maxX) { continue; - }else{ + } else { return $path; } } @@ -374,9 +402,9 @@ class Preview { /** * @brief return a preview of a file * @return \OC_Image - */ + */ public function getPreview() { - if(!is_null($this->preview) && $this->preview->valid()){ + if (!is_null($this->preview) && $this->preview->valid()) { return $this->preview; } @@ -386,22 +414,28 @@ class Preview { $maxY = $this->getMaxY(); $scalingUp = $this->getScalingUp(); - $fileInfo = $this->fileView->getFileInfo($file); - $fileId = $fileInfo['fileid']; + $fileInfo = $this->getFileInfo($file); + if($fileInfo === null || $fileInfo === false) { + return new \OC_Image(); + } + $fileId = $fileInfo->getId(); $cached = $this->isCached(); - if($cached) { - $image = new \OC_Image($this->userView->file_get_contents($cached, 'r')); + if ($cached) { + $stream = $this->userView->fopen($cached, 'r'); + $image = new \OC_Image(); + $image->loadFromFileHandle($stream); $this->preview = $image->valid() ? $image : null; $this->resizeAndCrop(); + fclose($stream); } - if(is_null($this->preview)) { + if (is_null($this->preview)) { $preview = null; - foreach(self::$providers as $supportedMimetype => $provider) { - if(!preg_match($supportedMimetype, $this->mimetype)) { + foreach (self::$providers as $supportedMimetype => $provider) { + if (!preg_match($supportedMimetype, $this->mimetype)) { continue; } @@ -409,7 +443,7 @@ class Preview { $preview = $provider->getThumbnail($file, $maxX, $maxY, $scalingUp, $this->fileView); - if(!($preview instanceof \OC_Image)) { + if (!($preview instanceof \OC_Image)) { continue; } @@ -419,11 +453,11 @@ class Preview { $previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/'; $cachePath = $previewPath . $maxX . '-' . $maxY . '.png'; - if($this->userView->is_dir($this->getThumbnailsFolder() . '/') === false) { + if ($this->userView->is_dir($this->getThumbnailsFolder() . '/') === false) { $this->userView->mkdir($this->getThumbnailsFolder() . '/'); } - if($this->userView->is_dir($previewPath) === false) { + if ($this->userView->is_dir($previewPath) === false) { $this->userView->mkdir($previewPath); } @@ -433,7 +467,7 @@ class Preview { } } - if(is_null($this->preview)) { + if (is_null($this->preview)) { $this->preview = new \OC_Image(); } @@ -443,20 +477,20 @@ class Preview { /** * @brief show preview * @return void - */ + */ public function showPreview() { \OCP\Response::enableCaching(3600 * 24); // 24 hours - if(is_null($this->preview)) { + if (is_null($this->preview)) { $this->getPreview(); } - $this->preview->show(); + $this->preview->show('image/png'); return; } /** * @brief show preview * @return void - */ + */ public function show() { $this->showPreview(); return; @@ -465,7 +499,7 @@ class Preview { /** * @brief resize, crop and fix orientation * @return void - */ + */ private function resizeAndCrop() { $image = $this->preview; $x = $this->getMaxX(); @@ -473,17 +507,17 @@ class Preview { $scalingUp = $this->getScalingUp(); $maxscalefactor = $this->getMaxScaleFactor(); - if(!($image instanceof \OC_Image)) { + if (!($image instanceof \OC_Image)) { \OC_Log::write('core', '$this->preview is not an instance of OC_Image', \OC_Log::DEBUG); return; } $image->fixOrientation(); - $realx = (int) $image->width(); - $realy = (int) $image->height(); + $realx = (int)$image->width(); + $realy = (int)$image->height(); - if($x === $realx && $y === $realy) { + if ($x === $realx && $y === $realy) { $this->preview = $image; return; } @@ -491,36 +525,36 @@ class Preview { $factorX = $x / $realx; $factorY = $y / $realy; - if($factorX >= $factorY) { + if ($factorX >= $factorY) { $factor = $factorX; - }else{ + } else { $factor = $factorY; } - if($scalingUp === false) { - if($factor > 1) { + if ($scalingUp === false) { + if ($factor > 1) { $factor = 1; } } - if(!is_null($maxscalefactor)) { - if($factor > $maxscalefactor) { + if (!is_null($maxscalefactor)) { + if ($factor > $maxscalefactor) { \OC_Log::write('core', 'scalefactor reduced from ' . $factor . ' to ' . $maxscalefactor, \OC_Log::DEBUG); $factor = $maxscalefactor; } } - $newXsize = (int) ($realx * $factor); - $newYsize = (int) ($realy * $factor); + $newXsize = (int)($realx * $factor); + $newYsize = (int)($realy * $factor); $image->preciseResize($newXsize, $newYsize); - if($newXsize === $x && $newYsize === $y) { + if ($newXsize === $x && $newYsize === $y) { $this->preview = $image; return; } - if($newXsize >= $x && $newYsize >= $y) { + if ($newXsize >= $x && $newYsize >= $y) { $cropX = floor(abs($x - $newXsize) * 0.5); //don't crop previews on the Y axis, this sucks if it's a document. //$cropY = floor(abs($y - $newYsize) * 0.5); @@ -532,19 +566,19 @@ class Preview { return; } - if($newXsize < $x || $newYsize < $y) { - if($newXsize > $x) { + if ($newXsize < $x || $newYsize < $y) { + if ($newXsize > $x) { $cropX = floor(($newXsize - $x) * 0.5); $image->crop($cropX, 0, $x, $newYsize); } - if($newYsize > $y) { + if ($newYsize > $y) { $cropY = floor(($newYsize - $y) * 0.5); $image->crop(0, $cropY, $newXsize, $y); } - $newXsize = (int) $image->width(); - $newYsize = (int) $image->height(); + $newXsize = (int)$image->width(); + $newYsize = (int)$image->height(); //create transparent background layer $backgroundlayer = imagecreatetruecolor($x, $y); @@ -570,12 +604,11 @@ class Preview { /** * @brief register a new preview provider to be used - * @param string $provider class name of a Preview_Provider * @param array $options * @return void */ - public static function registerProvider($class, $options=array()) { - self::$registeredProviders[]=array('class'=>$class, 'options'=>$options); + public static function registerProvider($class, $options = array()) { + self::$registeredProviders[] = array('class' => $class, 'options' => $options); } /** @@ -583,19 +616,19 @@ class Preview { * @return void */ private static function initProviders() { - if(!\OC_Config::getValue('enable_previews', true)) { + if (!\OC_Config::getValue('enable_previews', true)) { $provider = new Preview\Unknown(array()); self::$providers = array($provider->getMimeType() => $provider); return; } - if(count(self::$providers)>0) { + if (count(self::$providers) > 0) { return; } - foreach(self::$registeredProviders as $provider) { - $class=$provider['class']; - $options=$provider['options']; + foreach (self::$registeredProviders as $provider) { + $class = $provider['class']; + $options = $provider['options']; $object = new $class($options); @@ -610,29 +643,55 @@ class Preview { self::post_delete($args); } - public static function post_delete($args) { + public static function prepare_delete_files($args) { + self::prepare_delete($args, 'files/'); + } + + public static function prepare_delete($args, $prefix='') { $path = $args['path']; - if(substr($path, 0, 1) === '/') { + if (substr($path, 0, 1) === '/') { $path = substr($path, 1); } - $preview = new Preview(\OC_User::getUser(), 'files/', $path); + + $view = new \OC\Files\View('/' . \OC_User::getUser() . '/' . $prefix); + $info = $view->getFileInfo($path); + + \OC\Preview::$deleteFileMapper = array_merge( + \OC\Preview::$deleteFileMapper, + array( + Files\Filesystem::normalizePath($view->getAbsolutePath($path)) => $info, + ) + ); + } + + public static function post_delete_files($args) { + self::post_delete($args, 'files/'); + } + + public static function post_delete($args, $prefix='') { + $path = Files\Filesystem::normalizePath($args['path']); + + $preview = new Preview(\OC_User::getUser(), $prefix, $path); $preview->deleteAllPreviews(); } + /** + * @param string $mimetype + */ public static function isMimeSupported($mimetype) { - if(!\OC_Config::getValue('enable_previews', true)) { + if (!\OC_Config::getValue('enable_previews', true)) { return false; } //check if there are preview backends - if(empty(self::$providers)) { + if (empty(self::$providers)) { self::initProviders(); } //remove last element because it has the mimetype * $providers = array_slice(self::$providers, 0, -1); - foreach($providers as $supportedMimetype => $provider) { - if(preg_match($supportedMimetype, $mimetype)) { + foreach ($providers as $supportedMimetype => $provider) { + if (preg_match($supportedMimetype, $mimetype)) { return true; } } |