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image.php
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image.php
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<?php
/*
+--------------------------------------------------------------------------+
| This file is part of the Kolab File API |
| |
| Copyright (C) 2011-2013, Kolab Systems AG |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU Affero General Public License as published |
| by the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/> |
+--------------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
+--------------------------------------------------------------------------+
*/
/**
* Class implementing image viewer (with format converter)
*
* NOTE: some formats are supported by browser, don't use viewer when not needed.
*/
class file_viewer_image extends file_viewer
{
protected $mimetypes = array(
'image/bmp',
'image/png',
'image/jpeg',
'image/jpg',
'image/pjpeg',
'image/gif',
'image/tiff',
'image/x-tiff',
);
/**
* Class constructor
*
* @param file_api File API object
*/
public function __construct($api)
{
// @TODO: disable types not supported by some browsers
$this->api = $api;
}
/**
* Return file viewer URL
*
* @param string $file File name
* @param string $mimetype File type
*/
public function href($file, $mimetype = null)
{
$href = file_utils::script_uri() . '?method=file_get'
. '&file=' . urlencode($file)
. '&token=' . urlencode(session_id());
// we redirect to self only images with types unsupported
// by browser
if (in_array($mimetype, $this->mimetypes)) {
$href .= '&viewer=image';
}
return $href;
}
/**
* Print output and exit
*
* @param string $file File name
* @param string $mimetype File type
*/
public function output($file, $mimetype = null)
{
/*
// conversion not needed
if (preg_match('/^image/p?jpe?g$/i', $mimetype)) {
$this->api->api->file_get($file);
return;
}
*/
$rcube = rcube::get_instance();
$temp_dir = unslashify($rcube->config->get('temp_dir'));
$file_path = tempnam($temp_dir, 'rcmImage');
list($driver, $file) = $this->api->get_driver($file);
// write content to temp file
$fd = fopen($file_path, 'w');
$driver->file_get($file, array(), $fd);
fclose($fd);
// convert image to jpeg and send it to the browser
$image = new rcube_image($file_path);
if ($image->convert(rcube_image::TYPE_JPG, $file_path)) {
header("Content-Type: image/jpeg");
header("Content-Length: " . filesize($file_path));
readfile($file_path);
}
unlink($file_path);
}
}

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image.php (3 KB)

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