Changeset 5234 for trunk/wp-includes/category-template.php

Timestamp:

04/10/2007 07:52:15 PM (20 years ago)

Author:

ryan

Message:

Tag clouds from mdawaffe. fixes #4129

File:

• trunk/wp-includes/category-template.php (modified) (1 diff)

trunk/wp-includes/category-template.php

@@ -310 +310 @@
 }
 
+function wp_tag_cloud( $args = '' ) {
+        $defaults = array(
+                'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45, 
+                'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
+                'exclude' => '', 'include' => ''
+        );
+        $args = wp_parse_args( $args, $defaults );
+
+        $tags = get_tags( array_merge($args, array('orderby' => 'count', 'order' => 'DESC')) ); // Always query top tags
+
+        if ( empty($tags) )
+                return;
+
+        $return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
+        echo apply_filters( 'wp_tag_cloud', $return, $args );
+}
+
+// $tags = prefetched tag array ( get_tags() )
+// $args['format'] = 'flat' => whitespace separated, 'list' => UL, 'array' => array()
+// $args['orderby'] = 'name', 'count'
+function wp_generate_tag_cloud( $tags, $args = '' ) {
+        global $wp_rewrite;
+        $defaults = array(
+                'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
+                'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC'
+        );
+        $args = wp_parse_args( $args, $defaults );
+        extract($args);
+
+        if ( !$tags )
+                return;
+        $counts = $tag_links = array();
+        foreach ( (array) $tags as $tag ) {
+                $counts[$tag->cat_name] = $tag->tag_count;
+                $tag_links[$tag->cat_name] = get_tag_link( $tag->cat_ID );
+        }
+
+        $min_count = min($counts);
+        $spread = max($counts) - $min_count;
+        if ( $spread <= 0 )
+                $spread = 1;
+        $font_spread = $largest - $smallest;
+        if ( $font_spread <= 0 )
+                $font_spread = 1;
+        $font_step = $font_spread / $spread;
+
+        // SQL cannot save you; this is a second (potentially different) sort on a subset of data.
+        if ( 'name' == $orderby )
+                uksort($counts, 'strnatcasecmp');
+        else
+                asort($counts);
+
+        if ( 'DESC' == $order )
+                $counts = array_reverse( $tag_counts, true );
+
+        $a = array();
+
+        $rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? ' rel="tag"' : '';
+
+        foreach ( $counts as $tag => $count ) {
+                $tag_link = clean_url($tag_links[$tag]);
+                $tag = str_replace(' ', '&nbsp;', wp_specialchars( $tag ));
+                $a[] = "<a href='$tag_link' title='" . attribute_escape( sprintf( __('%d topics'), $count ) ) . "'$rel style='font-size: " .
+                        ( $smallest + ( ( $count - $min_count ) * $font_step ) )
+                        . "$unit;'>$tag</a>";
+        }
+
+        switch ( $format ) :
+        case 'array' :
+                $return =& $a;
+                break;
+        case 'list' :
+                $return = "<ul class='wp-tag-cloud'>\n\t<li>";
+                $return .= join("</li>\n\t<li>", $a);
+                $return .= "</li>\n</ul>\n";
+                break;
+        default :
+                $return = join("\n", $a);
+                break;
+        endswitch;
+
+        return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
+}
+
 //
 // Helper functions