2009-01-22 20:35:09 +09:00
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<?php
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/**
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2019-06-07 22:08:27 +09:00
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* GNU social - a federating social network
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2009-01-22 20:35:09 +09:00
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*
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* Abstraction for an image file
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*
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* LICENCE: This program 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 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Image
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2019-06-07 22:08:27 +09:00
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* @package GNUsocial
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2009-08-26 07:19:04 +09:00
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* @author Evan Prodromou <evan@status.net>
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* @author Zach Copley <zach@status.net>
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2019-06-07 22:08:27 +09:00
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @author Miguel Dantas <biodantasgs@gmail.com>
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* @copyright 2008, 2019 Free Software Foundation http://fsf.org
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2009-01-22 20:35:09 +09:00
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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2019-06-07 22:08:27 +09:00
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* @link https://www.gnu.org/software/social/
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2009-01-22 20:35:09 +09:00
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*/
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2019-06-07 22:08:27 +09:00
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defined('GNUSOCIAL') || die();
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2009-01-22 20:35:09 +09:00
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/**
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2019-06-07 22:08:27 +09:00
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* A wrapper on uploaded images
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2009-01-22 20:35:09 +09:00
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*
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* Makes it slightly easier to accept an image file from upload.
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*
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* @category Image
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2019-06-07 22:08:27 +09:00
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* @package GNUsocial
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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2009-08-26 07:19:04 +09:00
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* @author Evan Prodromou <evan@status.net>
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* @author Zach Copley <zach@status.net>
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2019-06-07 22:08:27 +09:00
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* @link https://www.gnu.org/software/social/
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2009-01-22 20:35:09 +09:00
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*/
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2019-06-07 22:08:27 +09:00
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class ImageFile extends MediaFile
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2009-01-22 20:35:09 +09:00
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{
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2019-06-07 22:08:27 +09:00
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public $type;
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public $height;
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public $width;
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public $rotate = 0; // degrees to rotate for properly oriented image (extrapolated from EXIF etc.)
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public $animated = null; // Animated image? (has more than 1 frame). null means untested
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public $mimetype = null; // The _ImageFile_ mimetype, _not_ the originating File object
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public function __construct($id, string $filepath)
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2009-01-22 20:35:09 +09:00
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{
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2015-03-04 21:29:18 +09:00
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// These do not have to be the same as fileRecord->filename for example,
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// since we may have generated an image source file from something else!
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2009-02-05 09:32:15 +09:00
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$this->filepath = $filepath;
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2015-01-25 10:27:02 +09:00
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$this->filename = basename($filepath);
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2009-02-06 06:32:58 +09:00
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2009-02-05 09:32:15 +09:00
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$info = @getimagesize($this->filepath);
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2010-03-12 10:12:32 +09:00
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2019-06-07 22:08:27 +09:00
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if (!(($info[2] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) ||
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($info[2] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) ||
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($info[2] == IMAGETYPE_BMP && function_exists('imagecreatefrombmp')) ||
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($info[2] == IMAGETYPE_WBMP && function_exists('imagecreatefromwbmp')) ||
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($info[2] == IMAGETYPE_XBM && function_exists('imagecreatefromxbm')) ||
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($info[2] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')))) {
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2011-01-29 08:33:13 +09:00
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// TRANS: Exception thrown when trying to upload an unsupported image file format.
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2019-06-07 22:08:27 +09:00
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throw new UnsupportedMediaException(_m('Unsupported image format.'), $this->filepath);
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2010-03-12 10:12:32 +09:00
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}
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2015-02-25 09:31:44 +09:00
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$this->width = $info[0];
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$this->height = $info[1];
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$this->type = $info[2];
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2015-02-25 09:33:32 +09:00
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$this->mimetype = $info['mime'];
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2014-05-12 21:33:41 +09:00
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2019-06-07 22:08:27 +09:00
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parent::__construct(
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$filepath,
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$this->mimetype,
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null /* filehash, MediaFile will calculate it */,
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$id
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);
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2016-04-18 22:04:03 +09:00
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if ($this->type === IMAGETYPE_JPEG && function_exists('exif_read_data')) {
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2014-05-12 21:45:23 +09:00
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// Orientation value to rotate thumbnails properly
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2016-03-21 10:56:47 +09:00
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$exif = @exif_read_data($this->filepath);
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2014-05-12 21:45:23 +09:00
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if (is_array($exif) && isset($exif['Orientation'])) {
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2019-06-07 22:08:27 +09:00
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switch (intval($exif['Orientation'])) {
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2014-05-12 21:45:23 +09:00
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case 1: // top is top
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$this->rotate = 0;
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break;
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case 3: // top is bottom
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$this->rotate = 180;
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break;
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case 6: // top is right
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$this->rotate = -90;
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break;
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case 8: // top is left
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$this->rotate = 90;
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break;
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}
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// If we ever write this back, Orientation should be set to '1'
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2014-05-12 21:33:41 +09:00
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}
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2015-01-26 06:45:25 +09:00
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} elseif ($this->type === IMAGETYPE_GIF) {
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$this->animated = $this->isAnimatedGif();
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2014-05-12 21:33:41 +09:00
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}
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2014-06-05 19:59:38 +09:00
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Event::handle('FillImageFileMetadata', array($this));
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2009-01-22 20:35:09 +09:00
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}
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2014-04-22 19:09:24 +09:00
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public static function fromFileObject(File $file)
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{
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$imgPath = null;
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$media = common_get_mime_media($file->mimetype);
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if (Event::handle('CreateFileImageThumbnailSource', array($file, &$imgPath, $media))) {
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2015-10-02 05:14:49 +09:00
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if (empty($file->filename) && !file_exists($imgPath)) {
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2019-06-07 22:08:27 +09:00
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throw new UnsupportedMediaException(_m('File without filename could not get a thumbnail source.'));
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2015-01-26 09:16:28 +09:00
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}
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2015-03-05 19:59:11 +09:00
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// First some mimetype specific exceptions
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switch ($file->mimetype) {
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case 'image/svg+xml':
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2016-05-04 18:34:50 +09:00
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throw new UseFileAsThumbnailException($file);
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2015-03-05 19:59:11 +09:00
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}
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// And we'll only consider it an image if it has such a media type
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2014-04-22 19:09:24 +09:00
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switch ($media) {
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case 'image':
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$imgPath = $file->getPath();
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break;
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default:
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2019-06-07 22:08:27 +09:00
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throw new UnsupportedMediaException(_m('Unsupported media format.'), $file->getPath());
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2014-04-22 19:09:24 +09:00
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}
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}
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if (!file_exists($imgPath)) {
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2016-07-15 20:19:16 +09:00
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throw new FileNotFoundException($imgPath);
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2014-04-22 19:09:24 +09:00
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}
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try {
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2016-02-10 12:40:10 +09:00
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$image = new ImageFile($file->getID(), $imgPath);
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2016-07-15 19:52:01 +09:00
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} catch (Exception $e) {
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2014-04-22 19:09:24 +09:00
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// Avoid deleting the original
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2016-03-08 06:33:34 +09:00
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try {
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2016-07-15 19:52:01 +09:00
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if (strlen($imgPath) > 0 && $imgPath !== $file->getPath()) {
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2019-06-07 22:08:27 +09:00
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common_debug(__METHOD__.': Deleting temporary file that was created as image file' .
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'thumbnail source: '._ve($imgPath));
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2016-03-08 06:33:34 +09:00
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@unlink($imgPath);
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}
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} catch (FileNotFoundException $e) {
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// File reported (via getPath) that the original file
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// doesn't exist anyway, so it's safe to delete $imgPath
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@unlink($imgPath);
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2014-04-22 19:09:24 +09:00
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}
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2019-06-07 22:08:27 +09:00
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common_debug(sprintf('Exception %s caught when creating ImageFile for File id==%s ' .
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'and imgPath==%s: %s', get_class($e), _ve($file->id),
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_ve($imgPath), _ve($e->getMessage())));
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2016-07-21 07:23:27 +09:00
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throw $e;
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2014-04-22 19:09:24 +09:00
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}
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return $image;
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}
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2014-04-17 02:14:26 +09:00
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public function getPath()
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{
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if (!file_exists($this->filepath)) {
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2015-02-25 09:14:27 +09:00
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throw new FileNotFoundException($this->filepath);
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2014-04-17 02:14:26 +09:00
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}
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return $this->filepath;
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}
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2019-06-07 22:08:27 +09:00
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/**
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* Process a file upload
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*
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* Uses MediaFile's `fromUpload` to do the majority of the work and reencodes the image,
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* to mitigate injection attacks.
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* @param string $param
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* @param Profile|null $scoped
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* @return ImageFile|MediaFile
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* @throws ClientException
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* @throws NoResultException
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* @throws NoUploadedMediaException
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* @throws ServerException
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* @throws UnsupportedMediaException
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* @throws UseFileAsThumbnailException
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*/
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public static function fromUpload(string $param='upload', Profile $scoped = null)
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2009-01-22 20:35:09 +09:00
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{
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2019-06-07 22:08:27 +09:00
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return parent::fromUpload($param, $scoped);
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}
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2009-02-06 06:32:58 +09:00
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2019-06-07 22:08:27 +09:00
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/**
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* Several obscure file types should be normalized to PNG on resize.
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*
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* Keeps only PNG, JPEG and GIF
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*
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* @return int
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*/
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public function preferredType()
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{
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// Keep only JPEG and GIF in their orignal format
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if ($this->type === IMAGETYPE_JPEG || $this->type === IMAGETYPE_GIF) {
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return $this->type;
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}
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// We don't want to save some formats as they are rare, inefficient and antiquated
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// thus we can't guarantee clients will support
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// So just save it as PNG
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return IMAGETYPE_PNG;
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2009-02-05 09:32:15 +09:00
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}
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2009-02-06 06:32:58 +09:00
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2011-01-25 05:22:47 +09:00
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/**
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* Copy the image file to the given destination.
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2014-06-17 18:50:42 +09:00
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*
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* This function may modify the resulting file. Please use the
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* returned ImageFile object to read metadata (width, height etc.)
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2011-01-25 05:22:47 +09:00
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*
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* @param string $outpath
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2014-06-17 18:50:42 +09:00
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* @return ImageFile the image stored at target path
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2019-06-07 22:08:27 +09:00
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* @throws ClientException
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* @throws NoResultException
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* @throws ServerException
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* @throws UnsupportedMediaException
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* @throws UseFileAsThumbnailException
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2011-01-25 05:22:47 +09:00
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*/
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function copyTo($outpath)
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{
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2014-06-17 18:50:42 +09:00
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return new ImageFile(null, $this->resizeTo($outpath));
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2011-01-25 05:22:47 +09:00
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}
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2010-11-09 09:51:31 +09:00
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/**
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* Create and save a thumbnail image.
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*
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* @param string $outpath
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2019-06-07 22:08:27 +09:00
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* @param array $box width, height, boundary box (x,y,w,h) defaults to full image
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2010-11-09 09:51:31 +09:00
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* @return string full local filesystem filename
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2019-06-07 22:08:27 +09:00
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* @throws UnsupportedMediaException
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* @throws UseFileAsThumbnailException
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2010-11-09 09:51:31 +09:00
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*/
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2014-06-05 19:59:38 +09:00
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function resizeTo($outpath, array $box=array())
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2009-02-05 09:32:15 +09:00
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{
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2019-06-07 22:08:27 +09:00
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$box['width'] = isset($box['width']) ? intval($box['width']) : $this->width;
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2014-06-05 19:59:38 +09:00
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$box['height'] = isset($box['height']) ? intval($box['height']) : $this->height;
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2019-06-07 22:08:27 +09:00
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$box['x'] = isset($box['x']) ? intval($box['x']) : 0;
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$box['y'] = isset($box['y']) ? intval($box['y']) : 0;
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$box['w'] = isset($box['w']) ? intval($box['w']) : $this->width;
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$box['h'] = isset($box['h']) ? intval($box['h']) : $this->height;
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2014-06-05 19:59:38 +09:00
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2009-02-05 09:32:15 +09:00
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if (!file_exists($this->filepath)) {
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2011-01-29 08:33:13 +09:00
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// TRANS: Exception thrown during resize when image has been registered as present, but is no longer there.
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2019-06-07 22:08:27 +09:00
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throw new Exception(_m('Lost our file.'));
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2009-02-05 09:32:15 +09:00
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}
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2009-02-10 02:06:06 +09:00
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2014-06-17 18:50:42 +09:00
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// Don't rotate/crop/scale if it isn't necessary
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2019-06-07 22:08:27 +09:00
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if ($box['width'] === $this->width
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&& $box['height'] === $this->height
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&& $box['x'] === 0
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&& $box['y'] === 0
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&& $box['w'] === $this->width
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&& $box['h'] === $this->height
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&& $this->type === $this->preferredType()) {
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if (abs($this->rotate) == 90) {
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2014-06-17 18:50:42 +09:00
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// Box is rotated 90 degrees in either direction,
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// so we have to redefine x to y and vice versa.
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$tmp = $box['width'];
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$box['width'] = $box['height'];
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$box['height'] = $tmp;
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$tmp = $box['x'];
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$box['x'] = $box['y'];
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$box['y'] = $tmp;
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$tmp = $box['w'];
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$box['w'] = $box['h'];
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$box['h'] = $tmp;
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}
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2009-02-08 00:01:08 +09:00
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}
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2009-02-05 09:32:15 +09:00
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2014-06-05 19:59:38 +09:00
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if (Event::handle('StartResizeImageFile', array($this, $outpath, $box))) {
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$this->resizeToFile($outpath, $box);
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}
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2014-06-17 18:54:05 +09:00
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if (!file_exists($outpath)) {
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2016-05-04 18:34:50 +09:00
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if ($this->fileRecord instanceof File) {
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|
|
throw new UseFileAsThumbnailException($this->fileRecord);
|
|
|
|
} else {
|
|
|
|
throw new UnsupportedMediaException('No local File object exists for ImageFile.');
|
|
|
|
}
|
2014-06-17 18:54:05 +09:00
|
|
|
}
|
|
|
|
|
2014-06-05 19:59:38 +09:00
|
|
|
return $outpath;
|
|
|
|
}
|
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
/**
|
|
|
|
* Resizes a file. If $box is omitted, the size is not changed, but this is still useful,
|
|
|
|
* because it will reencode the image in the `self::prefferedType()` format. This only
|
|
|
|
* applies henceforward, not retroactively
|
|
|
|
*
|
|
|
|
* Increases the 'memory_limit' to the one in the 'attachments' section in the config, to
|
|
|
|
* enable the handling of bigger images, which can cause a peak of memory consumption, while
|
|
|
|
* encoding
|
|
|
|
* @param $outpath
|
|
|
|
* @param array $box
|
|
|
|
* @throws Exception
|
|
|
|
*/
|
2014-06-05 19:59:38 +09:00
|
|
|
protected function resizeToFile($outpath, array $box)
|
|
|
|
{
|
2019-06-07 22:08:27 +09:00
|
|
|
$old_limit = ini_set('memory_limit', common_config('attachments', 'memory_limit'));
|
|
|
|
$image_src = null;
|
2009-02-05 09:32:15 +09:00
|
|
|
switch ($this->type) {
|
2014-06-05 19:59:38 +09:00
|
|
|
case IMAGETYPE_GIF:
|
2009-02-05 09:32:15 +09:00
|
|
|
$image_src = imagecreatefromgif($this->filepath);
|
2009-01-22 20:35:09 +09:00
|
|
|
break;
|
2014-06-05 19:59:38 +09:00
|
|
|
case IMAGETYPE_JPEG:
|
2009-02-05 09:32:15 +09:00
|
|
|
$image_src = imagecreatefromjpeg($this->filepath);
|
|
|
|
break;
|
2014-06-05 19:59:38 +09:00
|
|
|
case IMAGETYPE_PNG:
|
2009-02-05 09:32:15 +09:00
|
|
|
$image_src = imagecreatefrompng($this->filepath);
|
|
|
|
break;
|
2014-06-05 19:59:38 +09:00
|
|
|
case IMAGETYPE_BMP:
|
2010-02-25 12:24:11 +09:00
|
|
|
$image_src = imagecreatefrombmp($this->filepath);
|
|
|
|
break;
|
2014-06-05 19:59:38 +09:00
|
|
|
case IMAGETYPE_WBMP:
|
2010-02-25 12:24:11 +09:00
|
|
|
$image_src = imagecreatefromwbmp($this->filepath);
|
|
|
|
break;
|
2014-06-05 19:59:38 +09:00
|
|
|
case IMAGETYPE_XBM:
|
2010-02-25 12:24:11 +09:00
|
|
|
$image_src = imagecreatefromxbm($this->filepath);
|
|
|
|
break;
|
2014-06-05 19:59:38 +09:00
|
|
|
default:
|
2011-01-29 08:33:13 +09:00
|
|
|
// TRANS: Exception thrown when trying to resize an unknown file type.
|
2019-06-07 22:08:27 +09:00
|
|
|
throw new Exception(_m('Unknown file type'));
|
2009-02-05 09:32:15 +09:00
|
|
|
}
|
|
|
|
|
2014-05-12 21:33:41 +09:00
|
|
|
if ($this->rotate != 0) {
|
|
|
|
$image_src = imagerotate($image_src, $this->rotate, 0);
|
|
|
|
}
|
|
|
|
|
2014-06-05 19:59:38 +09:00
|
|
|
$image_dest = imagecreatetruecolor($box['width'], $box['height']);
|
2009-02-06 06:32:58 +09:00
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
if ($this->type == IMAGETYPE_PNG || $this->type == IMAGETYPE_BMP) {
|
2009-02-05 09:32:15 +09:00
|
|
|
|
|
|
|
$transparent_idx = imagecolortransparent($image_src);
|
2009-02-06 06:32:58 +09:00
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
if ($transparent_idx >= 0 && $transparent_idx < 255) {
|
2009-02-05 09:32:15 +09:00
|
|
|
$transparent_color = imagecolorsforindex($image_src, $transparent_idx);
|
2019-06-07 22:08:27 +09:00
|
|
|
$transparent_idx = imagecolorallocate($image_dest, $transparent_color['red'],
|
|
|
|
$transparent_color['green'],
|
|
|
|
$transparent_color['blue']);
|
2009-02-05 09:32:15 +09:00
|
|
|
imagefill($image_dest, 0, 0, $transparent_idx);
|
|
|
|
imagecolortransparent($image_dest, $transparent_idx);
|
2009-02-06 06:32:58 +09:00
|
|
|
|
2009-02-05 09:32:15 +09:00
|
|
|
} elseif ($this->type == IMAGETYPE_PNG) {
|
|
|
|
imagealphablending($image_dest, false);
|
|
|
|
$transparent = imagecolorallocatealpha($image_dest, 0, 0, 0, 127);
|
|
|
|
imagefill($image_dest, 0, 0, $transparent);
|
|
|
|
imagesavealpha($image_dest, true);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
imagecopyresampled($image_dest, $image_src, 0, 0, $box['x'], $box['y'],
|
|
|
|
$box['width'], $box['height'], $box['w'], $box['h']);
|
|
|
|
|
|
|
|
$type = $this->preferredType();
|
|
|
|
$ext = image_type_to_extension($type, true);
|
|
|
|
$outpath = preg_replace("/\.[^\.]+$/", $ext, $outpath);
|
2009-02-05 09:32:15 +09:00
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
switch ($type) {
|
2009-02-05 09:32:15 +09:00
|
|
|
case IMAGETYPE_GIF:
|
|
|
|
imagegif($image_dest, $outpath);
|
|
|
|
break;
|
|
|
|
case IMAGETYPE_JPEG:
|
2013-10-01 18:37:59 +09:00
|
|
|
imagejpeg($image_dest, $outpath, common_config('image', 'jpegquality'));
|
2009-02-05 09:32:15 +09:00
|
|
|
break;
|
|
|
|
case IMAGETYPE_PNG:
|
|
|
|
imagepng($image_dest, $outpath);
|
|
|
|
break;
|
|
|
|
default:
|
2011-01-29 08:33:13 +09:00
|
|
|
// TRANS: Exception thrown when trying resize an unknown file type.
|
2019-06-07 22:08:27 +09:00
|
|
|
throw new Exception(_m('Unknown file type'));
|
2009-01-22 20:35:09 +09:00
|
|
|
}
|
2009-02-10 02:06:06 +09:00
|
|
|
|
2009-02-08 00:01:08 +09:00
|
|
|
imagedestroy($image_src);
|
|
|
|
imagedestroy($image_dest);
|
2019-06-07 22:08:27 +09:00
|
|
|
ini_set('memory_limit', $old_limit); // Restore the old memory limit
|
2010-11-09 09:51:31 +09:00
|
|
|
}
|
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
public function unlink()
|
2009-01-22 20:35:09 +09:00
|
|
|
{
|
2014-04-17 03:08:21 +09:00
|
|
|
@unlink($this->filepath);
|
2009-01-22 20:35:09 +09:00
|
|
|
}
|
2009-02-06 06:32:58 +09:00
|
|
|
|
2014-04-22 03:39:28 +09:00
|
|
|
public function scaleToFit($maxWidth=null, $maxHeight=null, $crop=null)
|
|
|
|
{
|
|
|
|
return self::getScalingValues($this->width, $this->height,
|
2019-06-07 22:08:27 +09:00
|
|
|
$maxWidth, $maxHeight, $crop, $this->rotate);
|
2014-04-22 03:39:28 +09:00
|
|
|
}
|
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
/**
|
2014-04-22 03:39:28 +09:00
|
|
|
* Gets scaling values for images of various types. Cropping can be enabled.
|
|
|
|
*
|
|
|
|
* Values will scale _up_ to fit max values if cropping is enabled!
|
|
|
|
* With cropping disabled, the max value of each axis will be respected.
|
|
|
|
*
|
|
|
|
* @param $width int Original width
|
|
|
|
* @param $height int Original height
|
|
|
|
* @param $maxW int Resulting max width
|
|
|
|
* @param $maxH int Resulting max height
|
|
|
|
* @param $crop int Crop to the size (not preserving aspect ratio)
|
2019-06-07 22:08:27 +09:00
|
|
|
* @param int $rotate
|
|
|
|
* @return array
|
|
|
|
* @throws ServerException
|
2014-04-22 03:39:28 +09:00
|
|
|
*/
|
|
|
|
public static function getScalingValues($width, $height,
|
2019-06-07 22:08:27 +09:00
|
|
|
$maxW=null, $maxH=null,
|
|
|
|
$crop=null, $rotate=0)
|
2014-04-22 03:39:28 +09:00
|
|
|
{
|
|
|
|
$maxW = $maxW ?: common_config('thumbnail', 'width');
|
|
|
|
$maxH = $maxH ?: common_config('thumbnail', 'height');
|
2019-06-07 22:08:27 +09:00
|
|
|
|
2014-04-22 03:39:28 +09:00
|
|
|
if ($maxW < 1 || ($maxH !== null && $maxH < 1)) {
|
|
|
|
throw new ServerException('Bad parameters for ImageFile::getScalingValues');
|
|
|
|
} elseif ($maxH === null) {
|
|
|
|
// if maxH is null, we set maxH to equal maxW and enable crop
|
|
|
|
$maxH = $maxW;
|
|
|
|
$crop = true;
|
|
|
|
}
|
2014-05-12 21:33:41 +09:00
|
|
|
|
|
|
|
// Because GD doesn't understand EXIF orientation etc.
|
|
|
|
if (abs($rotate) == 90) {
|
|
|
|
$tmp = $width;
|
|
|
|
$width = $height;
|
|
|
|
$height = $tmp;
|
|
|
|
}
|
2019-06-07 22:08:27 +09:00
|
|
|
|
2014-04-22 03:39:28 +09:00
|
|
|
// Cropping data (for original image size). Default values, 0 and null,
|
|
|
|
// imply no cropping and with preserved aspect ratio (per axis).
|
|
|
|
$cx = 0; // crop x
|
|
|
|
$cy = 0; // crop y
|
|
|
|
$cw = null; // crop area width
|
|
|
|
$ch = null; // crop area height
|
2019-06-07 22:08:27 +09:00
|
|
|
|
2014-04-22 03:39:28 +09:00
|
|
|
if ($crop) {
|
|
|
|
$s_ar = $width / $height;
|
|
|
|
$t_ar = $maxW / $maxH;
|
|
|
|
|
|
|
|
$rw = $maxW;
|
|
|
|
$rh = $maxH;
|
|
|
|
|
|
|
|
// Source aspect ratio differs from target, recalculate crop points!
|
|
|
|
if ($s_ar > $t_ar) {
|
|
|
|
$cx = floor($width / 2 - $height * $t_ar / 2);
|
|
|
|
$cw = ceil($height * $t_ar);
|
|
|
|
} elseif ($s_ar < $t_ar) {
|
|
|
|
$cy = floor($height / 2 - $width / $t_ar / 2);
|
|
|
|
$ch = ceil($width / $t_ar);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
$rw = $maxW;
|
|
|
|
$rh = ceil($height * $rw / $width);
|
|
|
|
|
|
|
|
// Scaling caused too large height, decrease to max accepted value
|
|
|
|
if ($rh > $maxH) {
|
|
|
|
$rh = $maxH;
|
|
|
|
$rw = ceil($width * $rh / $height);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return array(intval($rw), intval($rh),
|
2019-06-07 22:08:27 +09:00
|
|
|
intval($cx), intval($cy),
|
|
|
|
is_null($cw) ? $width : intval($cw),
|
|
|
|
is_null($ch) ? $height : intval($ch));
|
2014-04-22 03:39:28 +09:00
|
|
|
}
|
2015-01-26 06:45:25 +09:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Animated GIF test, courtesy of frank at huddler dot com et al:
|
|
|
|
* http://php.net/manual/en/function.imagecreatefromgif.php#104473
|
|
|
|
* Modified so avoid landing inside of a header (and thus not matching our regexp).
|
|
|
|
*/
|
|
|
|
protected function isAnimatedGif()
|
|
|
|
{
|
|
|
|
if (!($fh = @fopen($this->filepath, 'rb'))) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
$count = 0;
|
|
|
|
//an animated gif contains multiple "frames", with each frame having a
|
|
|
|
//header made up of:
|
|
|
|
// * a static 4-byte sequence (\x00\x21\xF9\x04)
|
|
|
|
// * 4 variable bytes
|
|
|
|
// * a static 2-byte sequence (\x00\x2C)
|
|
|
|
// In total the header is maximum 10 bytes.
|
|
|
|
|
|
|
|
// We read through the file til we reach the end of the file, or we've found
|
|
|
|
// at least 2 frame headers
|
|
|
|
while(!feof($fh) && $count < 2) {
|
|
|
|
$chunk = fread($fh, 1024 * 100); //read 100kb at a time
|
|
|
|
$count += preg_match_all('#\x00\x21\xF9\x04.{4}\x00\x2C#s', $chunk, $matches);
|
|
|
|
// rewind in case we ended up in the middle of the header, but avoid
|
|
|
|
// infinite loop (i.e. don't rewind if we're already in the end).
|
|
|
|
if (!feof($fh) && ftell($fh) >= 9) {
|
|
|
|
fseek($fh, -9, SEEK_CUR);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fclose($fh);
|
2016-05-04 18:57:55 +09:00
|
|
|
return $count >= 1; // number of animated frames apart from the original image
|
2015-01-26 06:45:25 +09:00
|
|
|
}
|
2015-03-04 21:12:42 +09:00
|
|
|
|
2016-02-10 12:40:10 +09:00
|
|
|
public function getFileThumbnail($width, $height, $crop, $upscale=false)
|
2015-03-04 21:12:42 +09:00
|
|
|
{
|
|
|
|
if (!$this->fileRecord instanceof File) {
|
|
|
|
throw new ServerException('No File object attached to this ImageFile object.');
|
|
|
|
}
|
|
|
|
|
|
|
|
if ($width === null) {
|
2019-06-07 22:08:27 +09:00
|
|
|
$width = common_config('thumbnail', 'width');
|
2015-03-04 21:12:42 +09:00
|
|
|
$height = common_config('thumbnail', 'height');
|
2019-06-07 22:08:27 +09:00
|
|
|
$crop = common_config('thumbnail', 'crop');
|
2015-03-04 21:12:42 +09:00
|
|
|
}
|
|
|
|
|
2016-02-10 12:40:10 +09:00
|
|
|
if (!$upscale) {
|
|
|
|
if ($width > $this->width) {
|
|
|
|
$width = $this->width;
|
|
|
|
}
|
|
|
|
if (!is_null($height) && $height > $this->height) {
|
|
|
|
$height = $this->height;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-03-04 21:12:42 +09:00
|
|
|
if ($height === null) {
|
|
|
|
$height = $width;
|
|
|
|
$crop = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Get proper aspect ratio width and height before lookup
|
|
|
|
// We have to do it through an ImageFile object because of orientation etc.
|
|
|
|
// Only other solution would've been to rotate + rewrite uploaded files
|
|
|
|
// which we don't want to do because we like original, untouched data!
|
|
|
|
list($width, $height, $x, $y, $w, $h) = $this->scaleToFit($width, $height, $crop);
|
|
|
|
|
|
|
|
$thumb = File_thumbnail::pkeyGet(array(
|
2016-07-21 07:23:27 +09:00
|
|
|
'file_id'=> $this->fileRecord->getID(),
|
2015-03-04 21:12:42 +09:00
|
|
|
'width' => $width,
|
|
|
|
'height' => $height,
|
2019-06-07 22:08:27 +09:00
|
|
|
));
|
2015-03-04 21:12:42 +09:00
|
|
|
if ($thumb instanceof File_thumbnail) {
|
|
|
|
return $thumb;
|
|
|
|
}
|
|
|
|
|
|
|
|
$filename = $this->fileRecord->filehash ?: $this->filename; // Remote files don't have $this->filehash
|
|
|
|
$extension = File::guessMimeExtension($this->mimetype);
|
2016-07-21 07:23:27 +09:00
|
|
|
$outname = "thumb-{$this->fileRecord->getID()}-{$width}x{$height}-{$filename}." . $extension;
|
2015-03-04 21:12:42 +09:00
|
|
|
$outpath = File_thumbnail::path($outname);
|
|
|
|
|
|
|
|
// The boundary box for our resizing
|
|
|
|
$box = array('width'=>$width, 'height'=>$height,
|
|
|
|
'x'=>$x, 'y'=>$y,
|
|
|
|
'w'=>$w, 'h'=>$h);
|
|
|
|
|
|
|
|
// Doublecheck that parameters are sane and integers.
|
|
|
|
if ($box['width'] < 1 || $box['width'] > common_config('thumbnail', 'maxsize')
|
|
|
|
|| $box['height'] < 1 || $box['height'] > common_config('thumbnail', 'maxsize')
|
|
|
|
|| $box['w'] < 1 || $box['x'] >= $this->width
|
|
|
|
|| $box['h'] < 1 || $box['y'] >= $this->height) {
|
|
|
|
// Fail on bad width parameter. If this occurs, it's due to algorithm in ImageFile->scaleToFit
|
|
|
|
common_debug("Boundary box parameters for resize of {$this->filepath} : ".var_export($box,true));
|
|
|
|
throw new ServerException('Bad thumbnail size parameters.');
|
|
|
|
}
|
|
|
|
|
2019-06-07 22:08:27 +09:00
|
|
|
common_debug(sprintf('Generating a thumbnail of File id==%u of size %ux%u',
|
|
|
|
$this->fileRecord->getID(), $width, $height));
|
2015-03-04 21:12:42 +09:00
|
|
|
|
|
|
|
// Perform resize and store into file
|
|
|
|
$this->resizeTo($outpath, $box);
|
|
|
|
|
2016-03-08 06:33:34 +09:00
|
|
|
try {
|
|
|
|
// Avoid deleting the original
|
|
|
|
if (!in_array($this->getPath(), [File::path($this->filename), File_thumbnail::path($this->filename)])) {
|
|
|
|
$this->unlink();
|
|
|
|
}
|
|
|
|
} catch (FileNotFoundException $e) {
|
|
|
|
// $this->getPath() says the file doesn't exist anyway, so no point in trying to delete it!
|
2015-03-04 21:12:42 +09:00
|
|
|
}
|
2016-03-08 06:33:34 +09:00
|
|
|
|
2016-02-10 12:40:10 +09:00
|
|
|
return File_thumbnail::saveThumbnail($this->fileRecord->getID(),
|
2019-06-07 22:08:27 +09:00
|
|
|
// no url since we generated it ourselves and can dynamically
|
|
|
|
// generate the url
|
|
|
|
null,
|
|
|
|
$width, $height, $outname);
|
2015-03-04 21:12:42 +09:00
|
|
|
}
|
2010-02-25 12:24:11 +09:00
|
|
|
}
|