Widget: display random image thumbnail from public albums

[Dunglx]

What it does ?
This widget displays a thumbnail image, taken randomly from any public albums and adds a "More..." link redirecting to albums.
Clicking on the thumbnail opens full sized picture in its current album.

Version history :
1.0: Initial release
1.1: Style can now be independant of template modification / Added option to display more than one thumbnail / Added option to define a custom size for the thumbnails.
1.2: You can now restrict picture fetching to a list of albums / Added fixes to the request.

Install instructions :
1- Go in to your AdminCP > vBulletin CMS > Widgets > Create new widget
2- Choose type 'PHP direct execution'
3- Give it a name (i.e: Random Picture)
4- Give it a description (i.e Random picture from public albums)
5- Save it
6- Configure it with the following code (copy/paste)

// Display random images thumbnails taken from any public albums.
// Author : Sulquendi
// Version: 1.2

// -- Widget Configuration --
$use_vB_thumbnail_size = false;
$use_custom_css = false;
$twidth = 190;
$limit = 1;
$albums_list = "";


// -- Nothing to configure below this line --
if ($use_custom_css){
$pthumb = 'class="pthumb"';
$pcaption = 'class="pcaption"';
$pmore = 'class="pmore"';
$pstyle = '';
}else{
$pthumb = 'style="text-align:center;"';
$pcaption = 'style="text-align:center;font-style:italic;font-family: Times, serif;margin-bottom:10px;"';
$pmore = 'style="text-align:right;display:block;"';
$pstyle = 'style="border: 1px solid black;padding:4px;background: white;"';
}
if ($albums_list!="") $sup_cond = "AND alb.albumid IN ($albums_list)"; else $sup_cond ="";
ob_start();
require_once(DIR . '/includes/functions_album.php');
require_once(DIR . '/includes/functions_user.php');
$pic_get = vB::$db->query_read("
SELECT alb.albumid, att.attachmentid, att.userid, att.caption, att.dateline, att.state, fdt.filesize, IF(fdt.thumbnail_filesize > 0, 1, 0) AS hasthumbnail, fdt.thumbnail_dateline, fdt.thumbnail_width, fdt.thumbnail_height, u.username
FROM ".TABLE_PREFIX."album AS alb
LEFT JOIN ".TABLE_PREFIX."attachment AS att ON alb.albumid = att.contentid
LEFT JOIN ".TABLE_PREFIX."filedata AS fdt ON att.filedataid = fdt.filedataid
LEFT JOIN ".TABLE_PREFIX."user AS u ON att.userid = u.userid
WHERE alb.state = 'public' AND att.contenttypeid = '8' $sup_cond
ORDER BY rand(" . microtime()*1000000 . ")
LIMIT $limit");
$output_bits = "";
while($pic = vB::$db->fetch_array($pic_get))
{
$albuminfo = fetch_albuminfo($pic[albumid]);
$picture = prepare_pictureinfo_thumb($pic, $albuminfo);
if ($use_vB_thumbnail_size) $size = $picture[dimensions]; else $size = "width=$twidth";
$output_bits .= "<div $pthumb><a href=\"album.php?{$vbulletin->session->vars['sessionurl']}albumid={$pic[albumid]}&attachmentid={$picture[attachmentid]}\"><img $pstyle src=\"attachment.php?{$vbulletin->session->vars['sessionurl']}attachmentid={$picture[attachmentid]}&thumb=1&d={$picture[thumbnail_dateline]}\" alt=\"{$picture[caption_preview]}\" $size /></a>";
$output_bits .= "</div><div $pcaption>{$picture[caption_preview]} by {$pic[username]}</div>";
}
$output_bits .= '<span '.$pmore.'><a href="album.php" alt="To the albums">More...</a></span>';
$output = $output_bits;
ob_end_clean();
7- There are 5 variables you can edit in this code, to configure the widget behavior :

$use_vB_thumbnail_size = false;
$use_custom_css = false;
$twidth = 190;
$limit = 2;
$albums_list = "1,2,3";
$albums_list :
define a list of albums IDs (coma-separated list) to use, when taking a picture randomly.
You can also specify only one ID.
note: if you leave this variable empty, ALL public albums will be used.

$use_vB_thumbnail_size :
false = the widget will use $twidth to set up the width of the thumbnail.
true = default vBulletin thumbnail size will be used.

$twidth:
Width of a thumbnail (in pixel.)
will only be used if $use_vB_thumbnail_size is set to false.

$limit:
# of thumbnails you want to display in the widget.

$use_custom_css
false = the styling of widget elements will be performed inside the widget itself (using style="" html tag.)
true = the styling will be performed by CSS, thus a template needs to be manually edited : vbcms.css

.pthumb {
text-align:center;
}
.pthumb img {
border: 1px solid black;
padding:4px;
background: white;
}
.pcaption {
text-align:center;
font-style:italic;
font-family: "Times New Roman", Times, serif;
margin-bottom:10px;
}
.pmore {
text-align:right;
display:block;
}
8- Your widget is ready to be added to your CMS with AdminCP > vBulletin CMS > Widgets > Layout Manager