function checkFolders()
{
$baseFolder = GalleryResourceStorage::getResourcesStorageFolder();
$userFolder = GalleryResourceStorage::getUserFolder($this->_blogInfo->getId());
$previewsFolder = GalleryResourceStorage::getPreviewsFolder($this->_blogInfo->getId());
$folders = "{$baseFolder}<br/>{$userFolder}<br/>{$previewsFolder}";
$message = "";
// check if the storage folder exists and it is readable
if (!GalleryResourceStorage::checkBaseStorageFolder() || !GalleryResourceStorage::checkUserStorageFolder($this->_blogInfo->getId()) || !GalleryResourceStorage::checkPreviewsStorageFolder($this->_blogInfo->getId()) || !GalleryResourceStorage::checkMediumSizePreviewsStorageFolder($this->_blogInfo->getId())) {
$message = $this->_locale->pr("error_base_storage_folder_missing_or_unreadable", $folders);
}
return $message;
}
function perform()
{
// first of all, fetch the resource
$this->_resourceId = $this->_request->getValue("resourceId");
$resources = new GalleryResources();
$resource = $resources->getResource($this->_resourceId, $this->_blogInfo->getId());
// check if it was loaded ok
if (!$resource) {
$this->_view = new AdminResourcesListView($this->_blogInfo);
$this->_view->setErrorMessage($this->_locale->tr("error_loading_resource"));
$this->setCommonData();
return false;
}
// if so, continue... first by checking if the resource is an image or not
// because if not, then there is no point in generating a thumbnail of it!
if (!$resource->isImage()) {
$this->_view = new AdminResourcesListView($this->_blogInfo);
$this->_view->setErrorMessage($this->_locale->tr("error_resource_is_not_an_image"));
}
$previewHeight = $this->_config->getValue("thumbnail_height");
$previewWidth = $this->_config->getValue("thumbnail_width");
$previewKeepAspectRatio = $this->_config->getValue("thumbnails_keep_aspect_ratio");
// build the filename
$fileNameParts = explode(".", $resource->getFileName());
$fileExt = strtolower($fileNameParts[count($fileNameParts) - 1]);
$fileName = $resource->getOwnerId() . "-" . $resource->getId() . "." . $fileExt;
// and start the resizing process
$resourceStorage = new GalleryResourceStorage();
$resizer = new GalleryResizer($resourceStorage->getResourcePath($resource));
$resourceStorage->checkPreviewsStorageFolder($resource->getOwnerId());
$outFile = $resourceStorage->getPreviewsFolder($resource->getOwnerId()) . $fileName;
// and finally, we can generate the preview!
$result = $resizer->generate($outFile, $previewHeight, $previewWidth, $previewKeepAspectRatio);
$previewFormat = $resizer->getThumbnailFormat();
$resource->setThumbnailFormat($previewFormat);
$resources->updateResource($resource);
if (!$result) {
$this->_view = new AdminResourcesListView($this->_blogInfo);
$this->_view->setErrorMessage($this->_locale->tr("error_generating_resource_preview"));
} else {
$previewHeight = $this->_config->getValue("medium_size_thumbnail_height");
$previewWidth = $this->_config->getValue("medium_size_thumbnail_width");
// and start the resizing process
$resourceStorage = new GalleryResourceStorage();
$resizer = new GalleryResizer($resourceStorage->getResourcePath($resource));
$resourceStorage->checkMediumSizePreviewsStorageFolder($resource->getOwnerId());
$outFile = $resourceStorage->getMediumSizePreviewsFolder($resource->getOwnerId()) . $fileName;
// and finally, we can generate the preview!
$result = $resizer->generate($outFile, $previewHeight, $previewWidth, $previewKeepAspectRatio);
$previewFormat = $resizer->getThumbnailFormat();
$resource->setThumbnailFormat($previewFormat);
$resources->updateResource($resource);
if (!$result) {
$this->_view = new AdminResourcesListView($this->_blogInfo);
$this->_view->setErrorMessage($this->_locale->tr("error_generating_resource_medium"));
} else {
$this->_view = new AdminEditResourceView($this->_blogInfo);
$this->_view->setSuccessMessage($message = $this->_locale->tr("resource_preview_generated_ok"));
$this->_view->setValue("resourceDescription", $resource->getDescription());
$this->_view->setValue("albumId", $resource->getAlbumId());
$this->_view->setValue("resource", $resource);
}
}
$this->setCommonData();
return true;
}
/**
* @public
*/
function checkPreviewsStorageFolder($ownerId)
{
$previewsFolder = GalleryResourceStorage::getPreviewsFolder($ownerId);
if ($previewsFolder[strlen($previewsFolder) - 1] == "/") {
$previewsFolder = substr($previewsFolder, 0, strlen($previewsFolder) - 1);
}
if (!File::isDir($previewsFolder)) {
// folder does not exist, so we should try to create it
if (!File::createDir($previewsFolder, 0755)) {
throw new Exception("Could not create user storage folder for previews: " . $previewsFolder);
//die();
return false;
}
}
if (!File::isReadable($previewsFolder)) {
throw new Exception($previewsFolder . " user previews storage folder exists but it is not readable!");
//die();
return false;
}
return true;
}
/**
* returns the name of the file in disk where the preview is
* stored
*
* @return the path to the small preview file
*/
function getPreviewFileName()
{
if ($this->getThumbnailFormat() == THUMBNAIL_OUTPUT_FORMAT_SAME_AS_IMAGE) {
$fileParts = explode(".", $this->getFileName());
$fileExt = $fileParts[count($fileParts) - 1];
$fileName = $this->getOwnerId() . "-" . $this->getId() . "." . strtolower($fileExt);
$previewFile = GalleryResourceStorage::getPreviewsFolder($this->getOwnerId()) . $fileName;
} else {
$previewType = $this->getThumbnailFormat();
$fileName = $this->getOwnerId() . "-" . $this->getId() . "." . strtolower($previewType);
$previewFile = GalleryResourceStorage::getPreviewsFolder($this->getOwnerId()) . $fileName;
}
return $previewFile;
}
/**
* generates the thumbnail of a file that we have just added.
*
* @param resFile the resource file from which we're trying to generate the
* thubmail.
* @param fileName The name and path of the new thumbnail we're going to create
*/
function generateResourceThumbnail($resFile, $resourceId, $ownerId)
{
// get some configuration settings regarding the size of the
// thumbnails, and also the default format for thumbnails
$config =& Config::getConfig();
$previewHeight = $config->getValue("thumbnail_height", GALLERY_DEFAULT_THUMBNAIL_HEIGHT);
$previewWidth = $config->getValue("thumbnail_width", GALLERY_DEFAULT_THUMBNAIL_WIDTH);
$previewKeepAspectRatio = $config->getValue("thumbnails_keep_aspect_ratio");
// get the file extension
$fileParts = explode(".", $resFile);
$fileExt = strtolower($fileParts[count($fileParts) - 1]);
$fileName = $ownerId . "-" . $resourceId . "." . $fileExt;
// and start the resizing process
$resizer = new GalleryResizer($resFile);
GalleryResourceStorage::checkPreviewsStorageFolder($ownerId);
$outFile = GalleryResourceStorage::getPreviewsFolder($ownerId) . $fileName;
// and finally, we can generate the preview!
$result = $resizer->generate($outFile, $previewWidth, $previewHeight, $previewKeepAspectRatio);
return $result;
}