100 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			100 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * GNU social - a federating social network
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 *
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 * Plugin to handle more kinds of image formats thanks to ImageMagick
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 *
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 * PHP version 5
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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  Plugin
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 * @package   GNUsocial
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 * @author    Mikael Nordfeldth <mmn@hethane.se>
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 * @copyright 2014 Free Software Foundation http://fsf.org
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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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 * @link      https://www.gnu.org/software/social/
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 */
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if (!defined('GNUSOCIAL')) { exit(1); }
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/*
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 * Dependencies:
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 *  php5-imagick
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 *
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 * Provides:
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 *  Animated GIF resize support
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 *
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 * Comments:
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 *  Animated GIF resize requires setting $config['thumbnail']['animated'] = true;
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 *
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 * Bugs:
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 *  Not even ImageMagick is very good at resizing animated GIFs.
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 *  We are not infinitely fast, so resizing animated GIFs is _not_ recommended.
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 */
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class ImageMagickPlugin extends Plugin
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{
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    /**
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     * @param ImageFile $file An ImageFile object we're getting metadata for
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     * @param array $info The response from getimagesize()
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     */
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    public function onFillImageFileMetadata(ImageFile $imagefile) {
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        if (is_null($imagefile->animated) && $imagefile->type === IMAGETYPE_GIF) {
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            $magick = new Imagick($imagefile->filepath);
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            $magick = $magick->coalesceImages();
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            $imagefile->animated = $magick->getNumberImages()>1;
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        }
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        return true;
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    }
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    public function onStartResizeImageFile(ImageFile $imagefile, $outpath, array $box) {
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        // So far we only take over the resize for IMAGETYPE_GIF
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        // (and only animated for gifs! (and only if we really want to resize the animation!))
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        if ($imagefile->type == IMAGETYPE_GIF && $imagefile->animated && common_config('thumbnail', 'animated')) {
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            $magick = new Imagick($imagefile->filepath);
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            $magick = $magick->coalesceImages();
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            $magick->setIteratorIndex(0);
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            do {
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                $magick->cropImage($box['w'], $box['h'], $box['x'], $box['y']);
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                $magick->thumbnailImage($box['width'], $box['height']);
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                $magick->setImagePage($box['width'], $box['height'], 0, 0);
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            } while ($magick->nextImage());
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            $magick = $magick->deconstructImages();
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            // $magick->writeImages($outpath, true); did not work, had to use filehandle
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            // There's been bugs for writeImages in php5-imagick before, probably now too
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            $fh = fopen($outpath, 'w+');
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            $success = $magick->writeImagesFile($fh);
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            fclose($fh);
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            return !$success;
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        }
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        return true;
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    }
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    public function onPluginVersion(&$versions)
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    {
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        $versions[] = array('name' => 'ImageMagick',
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                            'version' => GNUSOCIAL_VERSION,
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                            'author' => 'Mikael Nordfeldth',
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                            'homepage' => 'http://gnu.io/social',
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                            'rawdescription' =>
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                            // TRANS: Plugin description.
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                            _m('Use ImageMagick for some more image support.'));
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        return true;
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    }
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}
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