/home/edulekha/studygroup.edulekha.com/ow_libraries/wideimage/Operation/Flip.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
**/
/**
* Flip operation class
*
* @package Internal/Operations
*/
class WideImage_Operation_Flip
{
/**
* Returns a flipped image
*
* @param WideImage_Image $image
* @return WideImage_Image
*/
function execute($image)
{
$new = $image->copy();
$width = $image->getWidth();
$height = $image->getHeight();
if ($new->isTransparent())
imagefilledrectangle($new->getHandle(), 0, 0, $width, $height, $new->getTransparentColor());
for ($y = 0; $y < $height; $y++)
if (!imagecopy($new->getHandle(), $image->getHandle(), 0, $y, 0, $height - $y - 1, $width, 1))
throw new WideImage_GDFunctionResultException("imagecopy() returned false");
return $new;
}
}