Category Cloud widget by Lee Kelleher.
Author: Hugh Bassett-Jones
Author URI: http://hugh.bassett-jones.com
Version: 2
Based on Category Cloud widget by Lee Kelleher.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
published by the Free Software Foundation.
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
*/
class widget_catclouds extends WP_Widget
{
// declares the widget_catclouds class
function widget_catclouds(){
$widget_ops = array('classname' => 'widget_catclouds', 'description' => __( "Displays selected categories as a tag cloud") );
$this->WP_Widget('catcloud', __('Category clouds'), $widget_ops);
}
// widget output
function widget($args, $instance){
extract($args);
echo $before_widget;
// omit title if not specified
if ($instance['title'] != '')
echo $before_title . $instance['title'] . $after_title;
// build query
$query = 'show_option_all=1&style=cloud&show_count=1&use_desc_for_title=0&hierarchical=0';
$query .= '&order=' . $instance['order'];
$query .= '&orderby=' . $instance['orderby'];
if($instance['min_count'] > 0) { $query .= '&hide_empty=1';}
// specified categories
$inc_cats = array(); $exc_cats = array();
foreach (explode("," ,$instance['cats_inc_exc']) as $spec_cat) {
if ($spec_cat < 0) { $exc_cats[] = abs($spec_cat); }
elseif ( $spec_cat > 0) { $inc_cats[] = abs($spec_cat); }
}
if(count($inc_cats) > 0) { $query .= '&include=' . implode(",", $inc_cats); }
if(count($exc_cats) > 0) { $query .= '&exclude=' . implode(",", $exc_cats); }
// ensure minimum post count
$cats = get_categories($query);
foreach ($cats as $cat) {
$catlink = get_category_link( $cat->cat_ID );
$catname = $cat->cat_name;
$count = $cat->category_count;
if ($count >= $instance['min_count'])
{
$counts{$catname} = $count;
$catlinks{$catname} = $catlink;
}
}
// font size calculation
$spread = max($counts) - min($counts);
if ($spread <= 0) { $spread = 1; };
$fontspread = $instance['max_size'] - $instance['min_size'];
$fontstep = $spread / $fontspread;
if ($fontspread <= 0) { $fontspread = 1; }
echo '