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path: root/lib/private/preview.php
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-rwxr-xr-xlib/private/preview.php311
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;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-21 12:09:06 +0300