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<?php
/**
* Packed image gallery. All images adjusted to be same height.
*
* 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
*/
class PackedImageGallery extends TraditionalImageGallery {
function __construct( $mode = 'traditional', IContextSource $context = null ) {
parent::__construct( $mode, $context );
// Does not support per row option.
$this->mPerRow = 0;
}
/**
* We artificially have 1.5 the resolution neccessary so that
* we can scale it up by that much on the client side, without
* worrying about requesting a new image.
*/
const SCALE_FACTOR = 1.5;
protected function getVPad( $boxHeight, $thumbHeight ) {
return ( $this->getThumbPadding() + $boxHeight - $thumbHeight / self::SCALE_FACTOR ) / 2;
}
protected function getThumbPadding() {
return 0;
}
protected function getGBPadding() {
return 2;
}
/**
* @param File $img The file being transformed. May be false
* @return array
*/
protected function getThumbParams( $img ) {
if ( $img && $img->getMediaType() === MEDIATYPE_AUDIO ) {
$width = $this->mWidths;
} else {
// We want the width not to be the constraining
// factor, so use random big number.
$width = $this->mHeights * 10 + 100;
}
// self::SCALE_FACTOR so the js has some room to manipulate sizes.
return [
'width' => $width * self::SCALE_FACTOR,
'height' => $this->mHeights * self::SCALE_FACTOR,
];
}
protected function getThumbDivWidth( $thumbWidth ) {
// Require at least 60px wide, so caption is wide enough to work.
if ( $thumbWidth < 60 * self::SCALE_FACTOR ) {
$thumbWidth = 60 * self::SCALE_FACTOR;
}
return $thumbWidth / self::SCALE_FACTOR + $this->getThumbPadding();
}
/**
* @param MediaTransformOutput|bool $thumb The thumbnail, or false if no
* thumb (which can happen)
* @return float
*/
protected function getGBWidth( $thumb ) {
$thumbWidth = $thumb ? $thumb->getWidth() : $this->mWidths * self::SCALE_FACTOR;
return $this->getThumbDivWidth( $thumbWidth ) + $this->getGBPadding();
}
protected function adjustImageParameters( $thumb, &$imageParameters ) {
// Re-adjust back to normal size.
$imageParameters['override-width'] = ceil( $thumb->getWidth() / self::SCALE_FACTOR );
$imageParameters['override-height'] = ceil( $thumb->getHeight() / self::SCALE_FACTOR );
}
/**
* Add javascript which auto-justifies the rows by manipulating the image sizes.
* Also ensures that the hover version of this degrades gracefully.
* @return array
*/
protected function getModules() {
return [ 'mediawiki.page.gallery' ];
}
/**
* Do not support per-row on packed. It really doesn't work
* since the images have varying widths.
* @param int $num
*/
public function setPerRow( $num ) {
return;
}
}