132 lines
3.8 KiB
PHP
132 lines
3.8 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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/**
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* Public interface of ownCloud for apps to use.
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* Preview interface
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*
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*/
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// use OCP namespace for all classes that are considered public.
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// This means that they should be used by apps instead of the internal ownCloud classes
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namespace OCP;
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use OCP\Files\File;
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use OCP\Files\NotFoundException;
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use OCP\Files\SimpleFS\ISimpleFile;
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/**
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* This class provides functions to render and show thumbnails and previews of files
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* @since 6.0.0
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*/
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interface IPreview {
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/**
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* @since 9.2.0
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*/
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public const EVENT = self::class . ':' . 'PreviewRequested';
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public const MODE_FILL = 'fill';
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public const MODE_COVER = 'cover';
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/**
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* In order to improve lazy loading a closure can be registered which will be
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* called in case preview providers are actually requested
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*
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* $callable has to return an instance of \OCP\Preview\IProvider
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*
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* @param string $mimeTypeRegex Regex with the mime types that are supported by this provider
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* @param \Closure $callable
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* @return void
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* @since 8.1.0
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*/
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public function registerProvider($mimeTypeRegex, \Closure $callable);
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/**
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* Get all providers
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* @return array
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* @since 8.1.0
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*/
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public function getProviders();
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/**
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* Does the manager have any providers
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* @return bool
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* @since 8.1.0
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*/
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public function hasProviders();
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/**
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* Returns a preview of a file
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*
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* The cache is searched first and if nothing usable was found then a preview is
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* generated by one of the providers
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*
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* @param File $file
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* @param int $width
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* @param int $height
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* @param bool $crop
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* @param string $mode
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* @param string $mimeType To force a given mimetype for the file (files_versions needs this)
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* @return ISimpleFile
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* @throws NotFoundException
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* @throws \InvalidArgumentException if the preview would be invalid (in case the original image is invalid)
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* @since 11.0.0 - \InvalidArgumentException was added in 12.0.0
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*/
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public function getPreview(File $file, $width = -1, $height = -1, $crop = false, $mode = IPreview::MODE_FILL, $mimeType = null);
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/**
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* Returns true if the passed mime type is supported
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* @param string $mimeType
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* @return boolean
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* @since 6.0.0
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*/
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public function isMimeSupported($mimeType = '*');
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/**
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* Check if a preview can be generated for a file
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*
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* @param \OCP\Files\FileInfo $file
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* @return bool
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* @since 8.0.0
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*/
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public function isAvailable(\OCP\Files\FileInfo $file);
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/**
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* Generates previews of a file
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*
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* @param File $file
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* @param array $specifications
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* @param string $mimeType
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* @return ISimpleFile the last preview that was generated
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* @throws NotFoundException
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* @throws \InvalidArgumentException if the preview would be invalid (in case the original image is invalid)
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* @since 19.0.0
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*/
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public function generatePreviews(File $file, array $specifications, $mimeType = null);
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}
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