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Logarithmic scale for tag cloud, props kometbomb, fixes #10703 

git-svn-id: http://svn.automattic.com/wordpress/trunk@11894 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
azaozz 2009-09-01 20:06:11 +00:00
parent 91582e7d2c
commit c590b49f45
1 changed files with 19 additions and 4 deletions
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23
wp-includes/category-template.php
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@ -565,6 +565,17 @@ function default_topic_count_text( $count ) {
return sprintf( _n('%s topic', '%s topics', $count), number_format_i18n( $count ) );
}
/**
* 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.
*
@ -602,7 +613,7 @@ function wp_generate_tag_cloud( $tags, $args = '' ) {
'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'] ) ) {
@ -641,8 +652,11 @@ function wp_generate_tag_cloud( $tags, $args = '' ) {
$tags = array_slice($tags, 0, $number);
$counts = array();
foreach ( (array) $tags as $key => $tag )
$counts[ $key ] = $tag->count;
$real_counts = array(); // For the alt tag
foreach ( (array) $tags as $key => $tag ) {
$real_counts[ $key ] = $tag->count;
$counts[ $key ] = $topic_count_scale_callback($tag->count);
}
$min_count = min( $counts );
$spread = max( $counts ) - $min_count;
@ -659,10 +673,11 @@ function wp_generate_tag_cloud( $tags, $args = '' ) {
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>";
}