Pimcore\Model\Asset\Document\ImageThumbnail::generate PHP Метод

    public function generate()
    {
        $errorImage = PIMCORE_PATH . '/static6/img/filetype-not-supported.png';
        $generated = false;
        if (!$this->asset) {
            $this->filesystemPath = $errorImage;
        } elseif (!$this->filesystemPath) {
            $config = $this->getConfig();
            $config->setName("document_" . $config->getName() . "-" . $this->page);
            try {
                $path = null;
                if (!$this->deferred) {
                    $converter = \Pimcore\Document::getInstance();
                    $converter->load($this->asset->getFileSystemPath());
                    $path = PIMCORE_TEMPORARY_DIRECTORY . "/document-image-cache/document_" . $this->asset->getId() . "__thumbnail_" . $this->page . ".png";
                    if (!is_dir(dirname($path))) {
                        \Pimcore\File::mkdir(dirname($path));
                    }
                    $lockKey = "document-thumbnail-" . $this->asset->getId() . "-" . $this->page;
                    if (!is_file($path) && !Model\Tool\Lock::isLocked($lockKey)) {
                        Model\Tool\Lock::lock($lockKey);
                        $converter->saveImage($path, $this->page);
                        $generated = true;
                        Model\Tool\Lock::release($lockKey);
                    } elseif (Model\Tool\Lock::isLocked($lockKey)) {
                        return "/pimcore/static6/img/please-wait.png";
                    }
                }
                if ($config) {
                    $path = Image\Thumbnail\Processor::process($this->asset, $config, $path, $this->deferred, true, $generated);
                }
                $this->filesystemPath = $path;
            } catch (\Exception $e) {
                Logger::error("Couldn't create image-thumbnail of document " . $this->asset->getRealFullPath());
                Logger::error($e);
                $this->filesystemPath = $errorImage;
            }
            \Pimcore::getEventManager()->trigger("asset.document.image-thumbnail", $this, ["deferred" => $this->deferred, "generated" => $generated]);
        }
    }