88 lines
2.7 KiB
PHP
88 lines
2.7 KiB
PHP
<?php
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/**
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* GNU Social
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* Copyright (C) 2010, Free Software Foundation, Inc.
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*
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* PHP version 5
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*
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* LICENCE:
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* 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 Widget
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* @package GNU Social
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* @author Ian Denhardt <ian@zenhack.net>
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* @copyright 2010 Free Software Foundation, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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*/
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function photo_make_thumbnail($filename)
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{
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$height_dest = 192;
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$width_dest = 256;
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$size_src = getimagesize(INSTALLDIR . '/file/' . $filename);
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$image_type = $size_src[2];
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switch($image_type) {
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case IMAGETYPE_JPEG:
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$image_src = imagecreatefromjpeg(INSTALLDIR . '/file/' . $filename);
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break;
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case IMAGETYPE_PNG:
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$image_src = imagecreatefrompng(INSTALLDIR . '/file/' . $filename);
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break;
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case IMAGETYPE_GIF:
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$image_src = imagecreatefromgif(INSTALLDIR . '/file/' . $filename);
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break;
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default:
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return false;
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}
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$width_src = $size_src[0];
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$height_src = $size_src[1];
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$ratio_src = (float) $width_src / (float) $height_src;
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$ratio_dest = (float) $width_dest / (float) $height_dest;
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if ($ratio_src > $ratio_dest) {
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$height_crop = $height_src;
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$width_crop = (int)($height_crop * $ratio_dest);
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$x_crop = ($width_src - $width_crop) / 2;
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} else {
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$width_crop = $width_src;
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$height_crop = (int)($width_crop / $ratio_dest);
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$x_crop = 0;
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}
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$image_dest = imagecreatetruecolor($width_dest, $height_dest);
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imagecopyresampled($image_dest, $image_src, 0, 0, $x_crop, 0, $width_dest, $height_dest, $width_crop, $height_crop);
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switch ($image_type) {
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case IMAGETYPE_JPEG:
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imagejpeg($image_dest, INSTALLDIR . '/file/' . 'thumb.' . $filename, 100);
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break;
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case IMAGETYPE_PNG:
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imagepng($image_dest, INSTALLDIR . '/file/thumb.' . $filename);
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break;
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case IMAGETYPE_GIF:
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imagegif($image_dest, INSTALLDIR . '/file/thumb.' . $filename);
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break;
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}
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imagedestroy($image_src);
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imagedestroy($image_dest);
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return true;
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}
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