Tag clouds from mdawaffe. fixes #4129
git-svn-id: http://svn.automattic.com/wordpress/trunk@5234 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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ryan
parent
f32f812fa9
commit
77cdde3f87
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@ -309,6 +309,90 @@ function wp_list_categories($args = '') {
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echo apply_filters('wp_list_categories', $output);
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}
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function wp_tag_cloud( $args = '' ) {
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$defaults = array(
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'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
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'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
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'exclude' => '', 'include' => ''
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);
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$args = wp_parse_args( $args, $defaults );
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$tags = get_tags( array_merge($args, array('orderby' => 'count', 'order' => 'DESC')) ); // Always query top tags
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if ( empty($tags) )
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return;
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$return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
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echo apply_filters( 'wp_tag_cloud', $return, $args );
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}
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// $tags = prefetched tag array ( get_tags() )
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// $args['format'] = 'flat' => whitespace separated, 'list' => UL, 'array' => array()
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// $args['orderby'] = 'name', 'count'
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function wp_generate_tag_cloud( $tags, $args = '' ) {
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global $wp_rewrite;
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$defaults = array(
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'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
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'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC'
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);
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$args = wp_parse_args( $args, $defaults );
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extract($args);
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if ( !$tags )
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return;
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$counts = $tag_links = array();
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foreach ( (array) $tags as $tag ) {
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$counts[$tag->cat_name] = $tag->tag_count;
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$tag_links[$tag->cat_name] = get_tag_link( $tag->cat_ID );
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}
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$min_count = min($counts);
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$spread = max($counts) - $min_count;
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if ( $spread <= 0 )
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$spread = 1;
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$font_spread = $largest - $smallest;
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if ( $font_spread <= 0 )
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$font_spread = 1;
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$font_step = $font_spread / $spread;
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// SQL cannot save you; this is a second (potentially different) sort on a subset of data.
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if ( 'name' == $orderby )
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uksort($counts, 'strnatcasecmp');
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else
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asort($counts);
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if ( 'DESC' == $order )
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$counts = array_reverse( $tag_counts, true );
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$a = array();
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$rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? ' rel="tag"' : '';
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foreach ( $counts as $tag => $count ) {
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$tag_link = clean_url($tag_links[$tag]);
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$tag = str_replace(' ', ' ', wp_specialchars( $tag ));
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$a[] = "<a href='$tag_link' title='" . attribute_escape( sprintf( __('%d topics'), $count ) ) . "'$rel style='font-size: " .
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( $smallest + ( ( $count - $min_count ) * $font_step ) )
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. "$unit;'>$tag</a>";
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}
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switch ( $format ) :
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case 'array' :
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$return =& $a;
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break;
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case 'list' :
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$return = "<ul class='wp-tag-cloud'>\n\t<li>";
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$return .= join("</li>\n\t<li>", $a);
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$return .= "</li>\n</ul>\n";
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break;
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default :
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$return = join("\n", $a);
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break;
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endswitch;
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return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
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}
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//
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// Helper functions
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//
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@ -350,26 +350,21 @@ function _get_category_hierarchy() {
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function &get_tags($args = '') {
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global $wpdb, $category_links;
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if ( is_array($args) )
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$r = &$args;
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else
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parse_str($args, $r);
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$defaults = array('orderby' => 'name', 'order' => 'ASC',
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'hide_empty' => true, 'exclude' => '', 'include' => '',
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'number' => '');
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$r = array_merge($defaults, $r);
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if ( 'count' == $r['orderby'] )
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$r['orderby'] = 'category_count';
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$args = wp_parse_args( $args, $defaults );
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if ( 'count' == $args['orderby'] )
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$args['orderby'] = 'tag_count';
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else
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$r['orderby'] = "cat_" . $r['orderby']; // restricts order by to cat_ID and cat_name fields
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$r['number'] = (int) $r['number'];
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extract($r);
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$args['orderby'] = "cat_" . $args['orderby']; // restricts order by to cat_ID and cat_name fields
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$args['number'] = (int) $args['number'];
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extract($args);
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$key = md5( serialize( $r ) );
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$key = md5( serialize( $args ) );
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if ( $cache = wp_cache_get( 'get_tags', 'category' ) )
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if ( isset( $cache[ $key ] ) )
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return apply_filters('get_tags', $cache[$key], $r);
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return apply_filters('get_tags', $cache[$key], $args);
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$where = 'cat_ID > 0';
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$inclusions = '';
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@ -406,7 +401,7 @@ function &get_tags($args = '') {
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if (!empty($exclusions))
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$exclusions .= ')';
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$exclusions = apply_filters('list_tags_exclusions', $exclusions, $r );
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$exclusions = apply_filters('list_tags_exclusions', $exclusions, $args );
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$where .= $exclusions;
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if ( $hide_empty )
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@ -427,7 +422,7 @@ function &get_tags($args = '') {
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$cache[ $key ] = $tags;
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wp_cache_set( 'get_tags', $cache, 'category' );
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$tags = apply_filters('get_tags', $tags, $r);
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$tags = apply_filters('get_tags', $tags, $args);
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return $tags;
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}
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@ -1471,4 +1471,22 @@ function smilies_init() {
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}
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}
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function wp_parse_args( $args, $defaults = '' ) {
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if ( is_array($args) ) :
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$r =& $args;
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else :
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parse_str( $args, $r );
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if ( get_magic_quotes_gpc() )
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$r = stripslashes_deep( $r );
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endif;
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if ( is_array($defaults) ) :
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extract($defaults);
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extract($r);
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return compact(array_keys($defaults)); // only those options defined in $defaults
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else :
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return $r;
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endif;
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}
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?>
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