81 lines
3 KiB
PHP
81 lines
3 KiB
PHP
<?php
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/**
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* ownCloud - gallery application
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*
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* @author Bartek Przybylski
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* @copyright 2012 Bartek Przybylski bart.p.pl@gmail.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library 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 Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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require_once('../../../lib/base.php');
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OC_JSON::checkLoggedIn();
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OC_JSON::checkAppEnabled('gallery');
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function CroppedThumbnail($imgSrc,$thumbnail_width,$thumbnail_height) { //$imgSrc is a FILE - Returns an image resource.
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//getting the image dimensions
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list($width_orig, $height_orig) = getimagesize($imgSrc);
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switch (strtolower(substr($imgSrc, strrpos($imgSrc, '.')+1))) {
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case "jpeg":
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case "jpg":
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$myImage = imagecreatefromjpeg($imgSrc);
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break;
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default:
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exit();
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}
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$ratio_orig = $width_orig/$height_orig;
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if ($thumbnail_width/$thumbnail_height > $ratio_orig) {
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$new_height = $thumbnail_width/$ratio_orig;
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$new_width = $thumbnail_width;
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} else {
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$new_width = $thumbnail_height*$ratio_orig;
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$new_height = $thumbnail_height;
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}
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$x_mid = $new_width/2; //horizontal middle
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$y_mid = $new_height/2; //vertical middle
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$process = imagecreatetruecolor(round($new_width), round($new_height));
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imagecopyresampled($process, $myImage, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig);
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$thumb = imagecreatetruecolor($thumbnail_width, $thumbnail_height);
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imagecopyresampled($thumb, $process, 0, 0, ($x_mid-($thumbnail_width/2)), ($y_mid-($thumbnail_height/2)), $thumbnail_width, $thumbnail_height, $thumbnail_width, $thumbnail_height);
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imagedestroy($process);
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imagedestroy($myImage);
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return $thumb;
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}
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$box_size = 200;
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$album_name = $_GET['album'];
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$x = $_GET['x'];
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$stmt = OC_DB::prepare('SELECT `file_path` FROM *PREFIX*gallery_photos,*PREFIX*gallery_albums WHERE *PREFIX*gallery_albums.`uid_owner` = ? AND `album_name` = ? AND *PREFIX*gallery_photos.`album_id` == *PREFIX*gallery_albums.`album_id`');
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$result = $stmt->execute(array(OC_User::getUser(), $album_name));
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$x = min((int)($x/($box_size/$result->numRows())), $result->numRows()-1); // get image to display
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$result->seek($x); // never throws
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$path = $result->fetchRow();
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$path = $path['file_path'];
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$imagePath = OC_Filesystem::getLocalFile($img);
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$imagesize = getimagesize($imagePath);
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header('Content-Type: image/png');
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$image = CroppedThumbnail($imagePath, $box_size, $box_size);
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imagepng($image);
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imagedestroy($image);
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?>
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