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<?php
/*
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2007 Bharat Mediratta
*
* 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.
*/
/**
* Display the slideshow
* @package Slideshow
* @subpackage UserInterface
* @author Alan Harder <alan.harder@sun.com>
* @version $Revision: 15513 $
*/
class SlideshowView extends GalleryView {
/**
* @see GalleryView::loadTemplate
*/
function loadTemplate(&$template, &$form) {
global $gallery;
$SlideShow = array();
$startId = null;
$itemListString = GalleryUtilities::getRequestVariables('itemList');
if (!empty($itemListString)) {
/* Build slideshow using specified items */
$item = explode('|', $itemListString);
} else {
/* Build slideshow for an album */
list ($ret, $item) = $this->getItem();
if ($ret) {
return array($ret, null);
}
if (!$item->getCanContainChildren()) {
/* Photo: do slideshow of parent album, start at this photo */
$startId = $item->getId();
list ($ret, $item) = GalleryCoreApi::loadEntitiesById($item->getParentId());
if ($ret) {
return array($ret, null);
}
}
$SlideShow['item'] = (array)$item;
}
list ($ret, $itemList, $start) =
$this->buildSlideshow($item, $startId);
if ($ret) {
return array($ret, null);
}
$SlideShow['itemList'] = $itemList;
$SlideShow['count'] = count($itemList);
$SlideShow['start'] = $start;
$template->setVariable('SlideShow', $SlideShow);
$template->head('modules/slideshow/templates/Header.tpl');
list ($ret, $module) = GalleryCoreApi::loadPlugin('module', 'slideshow');
if ($ret) {
return array($ret, null);
}
if (!empty($SlideShow['item']['title'])) {
$template->title($module->translate(array('text' => 'Slideshow for %s',
'arg1' => $SlideShow['item']['title'])));
} else {
$template->title($module->translate('Slideshow'));
}
return array(null, array('body' => 'modules/slideshow/templates/Slideshow.tpl',
'useFullScreen' => true));
}
/**
* Build data set to be used by template to render slideshow.
* If $item parameter is a single object then build using all children
* of that item; if an array then build using the ids in the array.
*/
function buildSlideshow($item, $startId = null, $recursive = false) {
global $gallery;
if (!isset($this->init)) {
$this->sizeClasses = array(
array(320,320), /* 0: <320x240 */
array(640,640), /* 1: ..640x480 */
array(800,800), /* 2: ..800x600 */
array(1024,1024), /* 3: ..1024x768 */
array(1280,1280), /* 4: ..1280x1024 */
); /* 5: >1280x1024 */
$this->init = 1;
}
if (is_array($item)) {
$childIds = $item;
} else {
list ($ret, $childIds) = GalleryCoreApi::fetchChildItemIds($item);
if ($ret) {
return array($ret, null, null);
}
}
$itemList = array();
$childItems = array();
if (!empty($childIds)) {
$gallery->guaranteeTimeLimit(30);
$ret = GalleryCoreApi::studyPermissions($childIds);
if ($ret) {
return array($ret, null, null);
}
list ($ret, $childItems) = GalleryCoreApi::loadEntitiesById($childIds);
if ($ret) {
return array($ret, null, null);
}
list ($ret, $preferredFullImages) =
GalleryCoreApi::fetchPreferredsByItemIds($childIds);
if ($ret) {
return array($ret, null, null);
}
list ($ret, $resizedImages) =
GalleryCoreApi::fetchResizesByItemIds($childIds);
if ($ret) {
return array($ret, null, null);
}
list ($ret, $thumbnails) =
GalleryCoreApi::fetchThumbnailsByItemIds($childIds);
if ($ret) {
return array($ret, null, null);
}
}
if (!isset($startId)) {
$start = 0;
}
foreach ($childItems as $child) {
if (count($itemList) % 100 == 0) {
$gallery->guaranteeTimeLimit(30);
}
$childId = $child->getId();
if (!isset($start) && $childId == $startId) {
$start = count($itemList);
}
if ($child->getCanContainChildren()) {
if ($recursive) {
list ($ret, $sublist) =
$this->buildSlideshow($child, null, $recursive);
if ($ret) {
return array($ret, null, null);
}
$itemList = array_merge($itemList, $sublist);
}
} else if (GalleryUtilities::isA($child, 'GalleryPhotoItem')) {
list ($ret, $permissions) =
GalleryCoreApi::getPermissions($childId);
if ($ret) {
return array($ret, null, null);
}
$images = array();
if (isset($permissions['core.viewSource'])) {
/* Full size; check for preferred copy */
if (isset($preferredFullImages[$childId])) {
$images[] = $preferredFullImages[$childId];
} else if ($child->canBeViewedInline()) {
$images[] = $child;
}
}
if (isset($permissions['core.viewResizes']) &&
isset($resizedImages[$childId])) {
foreach ($resizedImages[$childId] as $resize) {
$images[] = $resize;
}
}
if (isset($thumbnails[$childId])) {
$images[] = $thumbnails[$childId];
}
/* build table of {sizeClass}=>{sources_index} */
$sizeClassMap = $sizeClassArea = array();
for ($i = 0; $i <= count($this->sizeClasses); $i++) {
$sizeClassMap[] = $sizeClassArea[] = -1;
}
for ($i = 0; $i < sizeof($images); $i++) {
$image = $images[$i];
if (GalleryUtilities::isA($image, 'GalleryDerivativeImage')) {
if (!($image->getWidth() && $image->getHeight())) {
list ($ret, $image) =
GalleryCoreApi::rebuildDerivativeCache($image->getId());
if ($ret) {
return array($ret, null, null);
}
}
}
$image = $images[$i] = (array)$image;
if (!isset($image['width']) || !isset($image['height'])) {
continue; /* Should not happen */
}
$area = $image['width'] * $image['height'];
for ($j = count($this->sizeClasses); $j >= 0; $j--) {
if ($j < count($this->sizeClasses) &&
($image['width'] > $this->sizeClasses[$j][0] ||
$image['height'] > $this->sizeClasses[$j][1])) {
break;
}
if ($area > $sizeClassArea[$j]) {
$sizeClassMap[$j] = $i;
$sizeClassArea[$j] = $area;
}
}
}
for ($j = 0, $i = count($this->sizeClasses); $i >= 0; $i--) {
if ($sizeClassMap[$i] < 0) {
$sizeClassMap[$i] = $j;
} else {
$j = $sizeClassMap[$i];
}
}
if (!empty($images)) {
$itemList[] = array(
'id' => $childId,
'data' => (array)$child,
'sources' => $images,
'sizeClassMap' => $sizeClassMap);
}
}
}
return array(null, $itemList, isset($start) ? $start : 0);
}
}
?>
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