Ticket #10703: logarithmic_tag_cloud.diff

wp-includes/category-template.php

@@ -566 +566 @@
 }
 
 /**
+ * Default topic count scaling for tag links
+ *
+ * @param integer $count number of posts with that tag
+ * @return integer scaled count
+ */
+function default_topic_count_scale( $count ) {
+        return round(log10($count + 1) * 100);
+}
+
+
+/**
  * Generates a tag cloud (heatmap) from provided data.
  *
  * The text size is set by the 'smallest' and 'largest' arguments, which will
@@ -602 +613 @@
                 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 0,
                 'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
                 'topic_count_text_callback' => 'default_topic_count_text',
-                'filter' => 1,
+                'filter' => 1, 'topic_count_scale_callback' => 'default_topic_count_scale'
         );
 
         if ( !isset( $args['topic_count_text_callback'] ) && isset( $args['single_text'] ) && isset( $args['multiple_text'] ) ) {
@@ -641 +652 @@
                 $tags = array_slice($tags, 0, $number);
 
         $counts = array();
+        $real_counts = array(); // For the alt tag
         foreach ( (array) $tags as $key => $tag )
-                $counts[ $key ] = $tag->count;
+        {
+                $real_counts[ $key ] = $tag->count;
+                $counts[ $key ] = $topic_count_scale_callback($tag->count);
+        }
 
         $min_count = min( $counts );
         $spread = max( $counts ) - $min_count;
@@ -659 +674 @@
 
         foreach ( $tags as $key => $tag ) {
                 $count = $counts[ $key ];
+                $real_count = $real_counts[ $key ];
                 $tag_link = '#' != $tag->link ? esc_url( $tag->link ) : '#';
                 $tag_id = isset($tags[ $key ]->id) ? $tags[ $key ]->id : $key;
                 $tag_name = $tags[ $key ]->name;
-                $a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . esc_attr( $topic_count_text_callback( $count ) ) . "'$rel style='font-size: " .
+                $a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . esc_attr( $topic_count_text_callback( $real_count ) ) . "'$rel style='font-size: " .
                         ( $smallest + ( ( $count - $min_count ) * $font_step ) )
                         . "$unit;'>$tag_name</a>";
         }