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picture.php
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picture.php
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<?php
// +-----------------------------------------------------------------------+
// | This file is part of Piwigo. |
// | |
// | For copyright and license information, please view the COPYING.txt |
// | file that was distributed with this source code. |
// +-----------------------------------------------------------------------+
define('PHPWG_ROOT_PATH','./');
include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
include(PHPWG_ROOT_PATH.'include/section_init.inc.php');
include_once(PHPWG_ROOT_PATH.'include/functions_picture.inc.php');
// Check Access and exit when user status is not ok
check_status(ACCESS_GUEST);
// access authorization check
if (isset($page['category']))
{
check_restrictions($page['category']['id']);
}
$page['rank_of'] = array_flip($page['items']);
// if this image_id doesn't correspond to this category, an error message is
// displayed, and execution is stopped
if ( !isset($page['rank_of'][$page['image_id']]) )
{
$query = '
SELECT id, file, level
FROM '.IMAGES_TABLE.'
WHERE ';
if ($page['image_id']>0)
{
$query .= 'id = '.$page['image_id'];
}
else
{// url given by file name
assert( !empty($page['image_file']) );
$query .= 'file LIKE \'' .
str_replace(array('_','%'), array('/_','/%'), $page['image_file'] ).
'.%\' ESCAPE \'/\' LIMIT 1';
}
if ( ! ( $row = pwg_db_fetch_assoc(pwg_query($query)) ) )
{// element does not exist
page_not_found( 'The requested image does not exist',
duplicate_index_url()
);
}
if ($row['level']>$user['level'])
{
access_denied();
}
$page['image_id'] = $row['id'];
$page['image_file'] = $row['file'];
if ( !isset($page['rank_of'][$page['image_id']]) )
{// the image can still be non accessible (filter/cat perm) and/or not in the set
global $filter;
if ( !empty($filter['visible_images']) and
!in_array($page['image_id'], explode(',',$filter['visible_images']) ) )
{
page_not_found( 'The requested image is filtered',
duplicate_index_url()
);
}
if ('categories'==$page['section'] and !isset($page['category']) )
{// flat view - all items
access_denied();
}
else
{// try to see if we can access it differently
$query = '
SELECT id
FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id=image_id
WHERE id='.$page['image_id']
. get_sql_condition_FandF(
array('forbidden_categories' => 'category_id'),
" AND"
).'
LIMIT 1';
if ( pwg_db_num_rows( pwg_query($query) ) == 0 )
{
access_denied();
}
else
{
if ('best_rated'==$page['section'])
{
$page['rank_of'][ $page['image_id'] ] = count($page['items']);
$page['items'][] = $page['image_id'];
}
else
{
$url = make_picture_url(
array(
'image_id' => $page['image_id'],
'image_file' => $page['image_file'],
'section' => 'categories',
'flat' => true,
)
);
set_status_header( 'recent_pics'==$page['section'] ? 301 : 302);
redirect_http( $url );
}
}
}
}
}
// There is cookie, so we must handle it at the beginning
if ( isset($_GET['metadata']) )
{
if ( pwg_get_session_var('show_metadata') == null )
{
pwg_set_session_var('show_metadata', 1 );
} else {
pwg_unset_session_var('show_metadata');
}
}
// add default event handler for rendering element content
add_event_handler('render_element_content', 'default_picture_content');
// add default event handler for rendering element description
add_event_handler('render_element_description', 'pwg_nl2br');
/**
* pwg_nl2br is useful for PHP 5.2 which doesn't accept more than 1
* parameter on nl2br() (and anyway the second parameter of nl2br does not
* match what Piwigo gives.
*/
function pwg_nl2br($string)
{
return nl2br($string);
}
trigger_notify('loc_begin_picture');
// this is the default handler that generates the display for the element
function default_picture_content($content, $element_info)
{
global $conf;
if ( !empty($content) )
{// someone hooked us - so we skip;
return $content;
}
if (isset($_COOKIE['picture_deriv']))
{
if ( array_key_exists($_COOKIE['picture_deriv'], ImageStdParams::get_defined_type_map()) )
{
pwg_set_session_var('picture_deriv', $_COOKIE['picture_deriv']);
}
setcookie('picture_deriv', false, 0, cookie_path() );
}
$deriv_type = pwg_get_session_var('picture_deriv', $conf['derivative_default_size']);
$selected_derivative = $element_info['derivatives'][$deriv_type];
$unique_derivatives = array();
$show_original = isset($element_info['element_url']);
$added = array();
foreach($element_info['derivatives'] as $type => $derivative)
{
if ($type==IMG_SQUARE || $type==IMG_THUMB)
continue;
if (!array_key_exists($type, ImageStdParams::get_defined_type_map()))
continue;
$url = $derivative->get_url();
if (isset($added[$url]))
continue;
$added[$url] = 1;
$show_original &= !($derivative->same_as_source());
// in case we do not display the sizes icon, we only add the selected size to unique_derivatives
if ($conf['picture_sizes_icon'] or $type == $deriv_type)
$unique_derivatives[$type]= $derivative;
}
global $page, $template;
if ($show_original)
{
$template->assign( 'U_ORIGINAL', $element_info['element_url'] );
}
$template->append('current', array(
'selected_derivative' => $selected_derivative,
'unique_derivatives' => $unique_derivatives,
), true);
$template->set_filenames(
array('default_content'=>'picture_content.tpl')
);
$template->assign( array(
'ALT_IMG' => $element_info['file'],
'COOKIE_PATH' => cookie_path(),
)
);
return $template->parse( 'default_content', true);
}
// +-----------------------------------------------------------------------+
// | initialization |
// +-----------------------------------------------------------------------+
// caching first_rank, last_rank, current_rank in the displayed
// section. This should also help in readability.
$page['first_rank'] = 0;
$page['last_rank'] = count($page['items']) - 1;
$page['current_rank'] = $page['rank_of'][ $page['image_id'] ];
// caching current item : readability purpose
$page['current_item'] = $page['image_id'];
if ($page['current_rank'] != $page['first_rank'])
{
// caching first & previous item : readability purpose
$page['previous_item'] = $page['items'][ $page['current_rank'] - 1 ];
$page['first_item'] = $page['items'][ $page['first_rank'] ];
}
if ($page['current_rank'] != $page['last_rank'])
{
// caching next & last item : readability purpose
$page['next_item'] = $page['items'][ $page['current_rank'] + 1 ];
$page['last_item'] = $page['items'][ $page['last_rank'] ];
}
$url_up = duplicate_index_url(
array(
'start' =>
floor($page['current_rank'] / $page['nb_image_page'])
* $page['nb_image_page']
),
array(
'start',
)
);
$url_self = duplicate_picture_url();
// +-----------------------------------------------------------------------+
// | actions |
// +-----------------------------------------------------------------------+
/**
* Actions are favorite adding, user comment deletion, setting the picture
* as representative of the current category...
*
* Actions finish by a redirection
*/
if (isset($_GET['action']))
{
switch ($_GET['action'])
{
case 'add_to_favorites' :
{
$query = '
INSERT INTO '.FAVORITES_TABLE.'
(image_id,user_id)
VALUES
('.$page['image_id'].','.$user['id'].')
;';
pwg_query($query);
redirect($url_self);
break;
}
case 'remove_from_favorites' :
{
$query = '
DELETE FROM '.FAVORITES_TABLE.'
WHERE user_id = '.$user['id'].'
AND image_id = '.$page['image_id'].'
;';
pwg_query($query);
if ('favorites' == $page['section'])
{
redirect($url_up);
}
else
{
redirect($url_self);
}
break;
}
case 'set_as_representative' :
{
if (is_admin() and isset($page['category']))
{
$query = '
UPDATE '.CATEGORIES_TABLE.'
SET representative_picture_id = '.$page['image_id'].'
WHERE id = '.$page['category']['id'].'
;';
pwg_query($query);
pwg_activity('album', $page['category']['id'], 'edit', array('action'=>$_GET['action'], 'image_id'=>$page['image_id']));
include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
invalidate_user_cache();
}
redirect($url_self);
break;
}
case 'add_to_caddie' :
{
fill_caddie(array($page['image_id']));
redirect($url_self);
break;
}
case 'rate' :
{
include_once(PHPWG_ROOT_PATH.'include/functions_rate.inc.php');
rate_picture($page['image_id'], $_POST['rate']);
redirect($url_self);
}
case 'edit_comment':
{
include_once(PHPWG_ROOT_PATH.'include/functions_comment.inc.php');
check_input_parameter('comment_to_edit', $_GET, false, PATTERN_ID);
$author_id = get_comment_author_id($_GET['comment_to_edit']);
if (can_manage_comment('edit', $author_id))
{
if (!empty($_POST['content']))
{
check_pwg_token();
$comment_action = update_user_comment(
array(
'comment_id' => $_GET['comment_to_edit'],
'image_id' => $page['image_id'],
'content' => $_POST['content'],
'website_url' => @$_POST['website_url'],
),
$_POST['key']
);
$perform_redirect = false;
switch ($comment_action)
{
case 'moderate':
$_SESSION['page_infos'][] = l10n('An administrator must authorize your comment before it is visible.');
case 'validate':
$_SESSION['page_infos'][] = l10n('Your comment has been registered');
$perform_redirect = true;
break;
case 'reject':
$_SESSION['page_errors'][] = l10n('Your comment has NOT been registered because it did not pass the validation rules');
break;
default:
trigger_error('Invalid comment action '.$comment_action, E_USER_WARNING);
}
if ($perform_redirect)
{
redirect($url_self);
}
unset($_POST['content']);
}
$edit_comment = $_GET['comment_to_edit'];
}
break;
}
case 'delete_comment' :
{
check_pwg_token();
include_once(PHPWG_ROOT_PATH.'include/functions_comment.inc.php');
check_input_parameter('comment_to_delete', $_GET, false, PATTERN_ID);
$author_id = get_comment_author_id($_GET['comment_to_delete']);
if (can_manage_comment('delete', $author_id))
{
delete_user_comment($_GET['comment_to_delete']);
}
redirect($url_self);
}
case 'validate_comment' :
{
check_pwg_token();
include_once(PHPWG_ROOT_PATH.'include/functions_comment.inc.php');
check_input_parameter('comment_to_validate', $_GET, false, PATTERN_ID);
$author_id = get_comment_author_id($_GET['comment_to_validate']);
if (can_manage_comment('validate', $author_id))
{
validate_user_comment($_GET['comment_to_validate']);
}
redirect($url_self);
}
}
}
//---------- incrementation of the number of hits
$inc_hit_count = !isset($_POST['content']);
// don't increment counter if in the Mozilla Firefox prefetch
if (isset($_SERVER['HTTP_X_MOZ']) and $_SERVER['HTTP_X_MOZ'] == 'prefetch')
{
$inc_hit_count = false;
}
else
{
// don't increment counter if comming from the same picture (actions)
if (pwg_get_session_var('referer_image_id',0) == $page['image_id'])
{
$inc_hit_count = false;
}
pwg_set_session_var('referer_image_id', $page['image_id']);
}
// don't increment if adding a comment
if (trigger_change('allow_increment_element_hit_count', $inc_hit_count, $page['image_id'] ) )
{
// avoiding auto update of "lastmodified" field
$query = '
UPDATE
'.IMAGES_TABLE.'
SET hit = hit+1, lastmodified = lastmodified
WHERE id = '.$page['image_id'].'
;';
pwg_query($query);
}
//---------------------------------------------------------- related categories
$query = '
SELECT id,uppercats,commentable,visible,status,global_rank
FROM '.IMAGE_CATEGORY_TABLE.'
INNER JOIN '.CATEGORIES_TABLE.' ON category_id = id
WHERE image_id = '.$page['image_id'].'
'.get_sql_condition_FandF
(
array
(
'forbidden_categories' => 'id',
'visible_categories' => 'id'
),
'AND'
).'
;';
$related_categories = array_from_query($query);
usort($related_categories, 'global_rank_compare');
//-------------------------first, prev, current, next & last picture management
$picture = array();
$ids = array($page['image_id']);
if (isset($page['previous_item']))
{
$ids[] = $page['previous_item'];
$ids[] = $page['first_item'];
}
if (isset($page['next_item']))
{
$ids[] = $page['next_item'];
$ids[] = $page['last_item'];
}
$query = '
SELECT *
FROM '.IMAGES_TABLE.'
WHERE id IN ('.implode(',', $ids).')
;';
$result = pwg_query($query);
while ($row = pwg_db_fetch_assoc($result))
{
if (isset($page['previous_item']) and $row['id'] == $page['previous_item'])
{
$i = 'previous';
}
elseif (isset($page['next_item']) and $row['id'] == $page['next_item'])
{
$i = 'next';
}
elseif (isset($page['first_item']) and $row['id'] == $page['first_item'])
{
$i = 'first';
}
elseif (isset($page['last_item']) and $row['id'] == $page['last_item'])
{
$i = 'last';
}
else
{
$i = 'current';
}
$row['src_image'] = new SrcImage($row);
$row['derivatives'] = DerivativeImage::get_all($row['src_image']);
$extTab = explode('.',$row['path']);
$row['path_ext'] = strtolower(get_extension($row['path']));
$row['file_ext'] = strtolower(get_extension($row['file']));
if ($i=='current')
{
$row['element_path'] = get_element_path($row);
if ( $row['src_image']->is_original() )
{// we have a photo
if ( $user['enabled_high']=='true' )
{
$row['element_url'] = $row['src_image']->get_url();
$row['download_url'] = get_action_url($row['id'], 'e', true);
}
}
else
{ // not a pic - need download link
$row['element_url'] = get_element_url($row);
$row['download_url'] = get_action_url($row['id'], 'e', true);
}
}
$row['url'] = duplicate_picture_url(
array(
'image_id' => $row['id'],
'image_file' => $row['file'],
),
array(
'start',
)
);
$picture[$i] = $row;
$picture[$i]['TITLE'] = render_element_name($row);
$picture[$i]['TITLE_ESC'] = str_replace('"', '"', $picture[$i]['TITLE']);
if ('previous'==$i and $page['previous_item']==$page['first_item'])
{
$picture['first'] = $picture[$i];
}
if ('next'==$i and $page['next_item']==$page['last_item'])
{
$picture['last'] = $picture[$i];
}
}
$slideshow_params = array();
$slideshow_url_params = array();
if (isset($_GET['slideshow']))
{
$page['slideshow'] = true;
$page['meta_robots'] = array('noindex'=>1, 'nofollow'=>1);
$slideshow_params = decode_slideshow_params($_GET['slideshow']);
$slideshow_url_params['slideshow'] = encode_slideshow_params($slideshow_params);
if ($slideshow_params['play'])
{
$id_pict_redirect = '';
if (isset($page['next_item']))
{
$id_pict_redirect = 'next';
}
else
{
if ($slideshow_params['repeat'] and isset($page['first_item']))
{
$id_pict_redirect = 'first';
}
}
if (!empty($id_pict_redirect))
{
// $refresh, $url_link and $title are required for creating
// an automated refresh page in header.tpl
$refresh = $slideshow_params['period'];
$url_link = add_url_params(
$picture[$id_pict_redirect]['url'],
$slideshow_url_params
);
}
}
}
else
{
$page['slideshow'] = false;
}
if ($page['slideshow'] and $conf['light_slideshow'])
{
$template->set_filenames( array('slideshow' => 'slideshow.tpl'));
}
else
{
$template->set_filenames( array('picture' => 'picture.tpl'));
}
$title = $picture['current']['TITLE'];
$title_nb = ($page['current_rank'] + 1).'/'.count($page['items']);
// metadata
$url_metadata = duplicate_picture_url();
$url_metadata = add_url_params( $url_metadata, array('metadata'=>null) );
// do we have a plugin that can show metadata for something else than images?
$metadata_showable = trigger_change(
'get_element_metadata_available',
(
($conf['show_exif'] or $conf['show_iptc'])
and !$picture['current']['src_image']->is_mimetype()
),
$picture['current']
);
if ( $metadata_showable and pwg_get_session_var('show_metadata') )
{
$page['meta_robots']=array('noindex'=>1, 'nofollow'=>1);
}
$page['body_id'] = 'thePicturePage';
// allow plugins to change what we computed before passing data to template
$picture = trigger_change('picture_pictures_data', $picture);
//------------------------------------------------------- navigation management
foreach (array('first','previous','next','last', 'current') as $which_image)
{
if (isset($picture[$which_image]))
{
$template->assign(
$which_image,
array_merge(
$picture[$which_image],
array(
// Params slideshow was transmit to navigation buttons
'U_IMG' =>
add_url_params(
$picture[$which_image]['url'], $slideshow_url_params),
)
)
);
}
}
if ($conf['picture_download_icon'] and !empty($picture['current']['download_url']))
{
$template->append('current', array('U_DOWNLOAD' => $picture['current']['download_url']), true);
if ($conf['enable_formats'])
{
$query = '
SELECT *
FROM '.IMAGE_FORMAT_TABLE.'
WHERE image_id = '.$picture['current']['id'].'
;';
$formats = query2array($query);
// let's add the original as a format among others. It will just have a
// specific download URL
array_unshift(
$formats,
array(
'download_url' => $picture['current']['download_url'],
'ext' => get_extension($picture['current']['file']),
'filesize' => $picture['current']['filesize'],
)
);
foreach ($formats as &$format)
{
if (!isset($format['download_url']))
{
$format['download_url'] = 'action.php?format='.$format['format_id'].'&download';
}
$format['label'] = strtoupper($format['ext']);
$lang_key = 'format '.strtoupper($format['ext']);
if (isset($lang[$lang_key]))
{
$format['label'] = $lang[$lang_key];
}
$format['filesize'] = sprintf('%.1fMB', $format['filesize']/1024);
}
$template->append('current', array('formats' => $formats), true);
}
}
if ($page['slideshow'])
{
$tpl_slideshow = array();
//slideshow end
$template->assign(
array(
'U_SLIDESHOW_STOP' => $picture['current']['url'],
)
);
foreach (array('repeat', 'play') as $p)
{
$var_name =
'U_'
.($slideshow_params[$p] ? 'STOP_' : 'START_')
.strtoupper($p);
$tpl_slideshow[$var_name] =
add_url_params(
$picture['current']['url'],
array('slideshow' =>
encode_slideshow_params(
array_merge($slideshow_params,
array($p => ! $slideshow_params[$p]))
)
)
);
}
foreach (array('dec', 'inc') as $op)
{
$new_period = $slideshow_params['period'] + ((($op == 'dec') ? -1 : 1) * $conf['slideshow_period_step']);
$new_slideshow_params =
correct_slideshow_params(
array_merge($slideshow_params,
array('period' => $new_period)));
if ($new_slideshow_params['period'] === $new_period)
{
$var_name = 'U_'.strtoupper($op).'_PERIOD';
$tpl_slideshow[$var_name] =
add_url_params(
$picture['current']['url'],
array('slideshow' => encode_slideshow_params($new_slideshow_params)
)
);
}
}
$template->assign('slideshow', $tpl_slideshow );
}
elseif ($conf['picture_slideshow_icon'])
{
$template->assign(
array(
'U_SLIDESHOW_START' =>
add_url_params(
$picture['current']['url'],
array( 'slideshow'=>''))
)
);
}
$template->assign(
array(
'SECTION_TITLE' => $page['section_title'],
'PHOTO' => $title_nb,
'IS_HOME' => ('categories'==$page['section'] and !isset($page['category']) ),
'LEVEL_SEPARATOR' => $conf['level_separator'],
'U_UP' => $url_up,
'DISPLAY_NAV_BUTTONS' => $conf['picture_navigation_icons'],
'DISPLAY_NAV_THUMB' => $conf['picture_navigation_thumb']
)
);
if ($conf['picture_metadata_icon'])
{
$template->assign('U_METADATA', $url_metadata);
}
//------------------------------------------------------- upper menu management
// admin links
if (is_admin())
{
if (isset($page['category']) and $conf['picture_representative_icon'])
{
$template->assign(
array(
'U_SET_AS_REPRESENTATIVE' => add_url_params($url_self,
array('action'=>'set_as_representative')
)
)
);
}
if ($conf['picture_edit_icon'])
{
$url_admin =
get_root_url().'admin.php?page=photo-'.$page['image_id']
.(isset($page['category']) ? '&cat_id='.$page['category']['id'] : '')
;
$template->assign('U_PHOTO_ADMIN', $url_admin);
}
if ($conf['picture_caddie_icon'])
{
$template->assign(
'U_CADDIE',
add_url_params($url_self, array('action'=>'add_to_caddie'))
);
}
$template->assign('available_permission_levels', get_privacy_level_options());
}
// favorite manipulation
if (!is_a_guest() and $conf['picture_favorite_icon'])
{
// verify if the picture is already in the favorite of the user
$query = '
SELECT COUNT(*) AS nb_fav
FROM '.FAVORITES_TABLE.'
WHERE image_id = '.$page['image_id'].'
AND user_id = '.$user['id'].'
;';
$row = pwg_db_fetch_assoc( pwg_query($query) );
$is_favorite = $row['nb_fav'] != 0;
$template->assign(
'favorite',
array(
'IS_FAVORITE' => $is_favorite,
'U_FAVORITE' => add_url_params(
$url_self,
array('action'=> !$is_favorite ? 'add_to_favorites' : 'remove_from_favorites' )
),
)
);
}
//--------------------------------------------------------- picture information
// legend
if (isset($picture['current']['comment'])
and !empty($picture['current']['comment']))
{
$template->assign(
'COMMENT_IMG',
trigger_change('render_element_description',
$picture['current']['comment'],
'picture_page_element_description'
)
);
}
// author
if (!empty($picture['current']['author']))
{
$infos['INFO_AUTHOR'] = $picture['current']['author'];
}
// creation date
if (!empty($picture['current']['date_creation']))
{
$val = format_date($picture['current']['date_creation']);
$url = make_index_url(
array(
'chronology_field'=>'created',
'chronology_style'=>'monthly',
'chronology_view'=>'list',
'chronology_date' => explode('-', substr($picture['current']['date_creation'], 0, 10))
)
);
$infos['INFO_CREATION_DATE'] =
'<a href="'.$url.'" rel="nofollow">'.$val.'</a>';
}
// date of availability
$val = format_date($picture['current']['date_available']);
$url = make_index_url(
array(
'chronology_field'=>'posted',
'chronology_style'=>'monthly',
'chronology_view'=>'list',
'chronology_date' => explode(
'-',
substr($picture['current']['date_available'], 0, 10)
)
)
);
$infos['INFO_POSTED_DATE'] = '<a href="'.$url.'" rel="nofollow">'.$val.'</a>';
// size in pixels
if ($picture['current']['src_image']->is_original() and isset($picture['current']['width']) )
{
$infos['INFO_DIMENSIONS'] =
$picture['current']['width'].'*'.$picture['current']['height'];
}
// filesize
if (!empty($picture['current']['filesize']))
{
$infos['INFO_FILESIZE'] = l10n('%d Kb', $picture['current']['filesize']);
}
// number of visits
$infos['INFO_VISITS'] = $picture['current']['hit'];
// file
$infos['INFO_FILE'] = $picture['current']['file'];
$template->assign($infos);
$template->assign('display_info', unserialize($conf['picture_informations']));
// related tags
$tags = get_common_tags( array($page['image_id']), -1);
if ( count($tags) )
{
foreach ($tags as $tag)
{
$template->append(
'related_tags',
array_merge( $tag,
array(
'URL' => make_index_url(
array(
'tags' => array($tag)
)
),
'U_TAG_IMAGE' => duplicate_picture_url(
array(
'section' => 'tags',
'tags' => array($tag)
)
)
)
)
);
}
}
// related categories
if ( count($related_categories)==1 and
isset($page['category']) and
$related_categories[0]['id']==$page['category']['id'] )
{ // no need to go to db, we have all the info
$template->append(
'related_categories',
get_cat_display_name( $page['category']['upper_names'] )
);
}
else
{ // use only 1 sql query to get names for all related categories
$ids = array();
foreach ($related_categories as $category)
{// add all uppercats to $ids
$ids = array_merge($ids, explode(',', $category['uppercats']) );
}
$ids = array_unique($ids);
$query = '
SELECT id, name, permalink
FROM '.CATEGORIES_TABLE.'
WHERE id IN ('.implode(',',$ids).')';
$cat_map = hash_from_query($query, 'id');
foreach ($related_categories as $category)
{
$cats = array();
foreach ( explode(',', $category['uppercats']) as $id )
{
$cats[] = $cat_map[$id];
}
$template->append('related_categories', get_cat_display_name($cats) );
}
}
// maybe someone wants a special display (call it before page_header so that
// they can add stylesheets)
$element_content = trigger_change(
'render_element_content',
'',
$picture['current']
);
$template->assign( 'ELEMENT_CONTENT', $element_content );
if (isset($picture['next'])
and $picture['next']['src_image']->is_original()
and $template->get_template_vars('U_PREFETCH') == null
and strpos(@$_SERVER['HTTP_USER_AGENT'], 'Chrome/') === false)
{
$template->assign(
'U_PREFETCH',
$picture['next']['derivatives'][pwg_get_session_var('picture_deriv', $conf['derivative_default_size'])]->get_url()
);
}