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MockImageHandler.php
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MockImageHandler.php
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<?php
/**
* Fake handler for images.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Media
*/
/**
* Mock handler for images.
*
* This is really intended for unit testing.
*
* @ingroup Media
*/
class MockImageHandler {
/**
* Override BitmapHandler::doTransform() making sure we do not generate
* a thumbnail at all. That is merely returning a ThumbnailImage that
* will be consumed by the unit test. There is no need to create a real
* thumbnail on the filesystem.
* @param ImageHandler $that
* @param File $image
* @param string $dstPath
* @param string $dstUrl
* @param array $params
* @param int $flags
* @return ThumbnailImage
*/
public static function doFakeTransform( $that, $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
# Example of what we receive:
# $image: LocalFile
# $dstPath: /tmp/transform_7d0a7a2f1a09-1.jpg
# $dstUrl : http://example.com/images/thumb/0/09/Bad.jpg/320px-Bad.jpg
# $params: width: 320, descriptionUrl http://trunk.dev/wiki/File:Bad.jpg
$that->normaliseParams( $image, $params );
$scalerParams = [
# The size to which the image will be resized
'physicalWidth' => $params['physicalWidth'],
'physicalHeight' => $params['physicalHeight'],
'physicalDimensions' => "{$params['physicalWidth']}x{$params['physicalHeight']}",
# The size of the image on the page
'clientWidth' => $params['width'],
'clientHeight' => $params['height'],
# Comment as will be added to the EXIF of the thumbnail
'comment' => isset( $params['descriptionUrl'] ) ?
"File source: {$params['descriptionUrl']}" : '',
# Properties of the original image
'srcWidth' => $image->getWidth(),
'srcHeight' => $image->getHeight(),
'mimeType' => $image->getMimeType(),
'dstPath' => $dstPath,
'dstUrl' => $dstUrl,
];
# In some cases, we do not bother generating a thumbnail.
if ( !$image->mustRender() &&
$scalerParams['physicalWidth'] == $scalerParams['srcWidth']
&& $scalerParams['physicalHeight'] == $scalerParams['srcHeight']
) {
wfDebug( __METHOD__ . ": returning unscaled image" );
// getClientScalingThumbnailImage is protected
return $that->doClientImage( $image, $scalerParams );
}
return new ThumbnailImage( $image, $dstUrl, false, $params );
}
}

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