forked from joomla/Members-Manager
50 lines
1.4 KiB
PHP
50 lines
1.4 KiB
PHP
<?php
|
|
/**
|
|
* @author Gasper Kozak
|
|
* @copyright 2007-2011
|
|
|
|
This file is part of WideImage.
|
|
|
|
WideImage is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
WideImage 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with WideImage; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
* @package Internal/Operations
|
|
**/
|
|
|
|
/**
|
|
* AsGrayscale operation class
|
|
*
|
|
* @package Internal/Operations
|
|
*/
|
|
class WideImage_Operation_AsGrayscale
|
|
{
|
|
/**
|
|
* Returns a greyscale copy of an image
|
|
*
|
|
* @param WideImage_Image $image
|
|
* @return WideImage_Image
|
|
*/
|
|
function execute($image)
|
|
{
|
|
$new = $image->asTrueColor();
|
|
if (!imagefilter($new->getHandle(), IMG_FILTER_GRAYSCALE))
|
|
throw new WideImage_GDFunctionResultException("imagefilter() returned false");
|
|
|
|
if (!$image->isTrueColor())
|
|
$new = $new->asPalette();
|
|
|
|
return $new;
|
|
}
|
|
}
|