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Léon Brocard

NAME

HTML::TagCloud - Generate An HTML Tag Cloud

SYNOPSIS

  my $cloud = HTML::TagCloud->new;
  $cloud->add($tag1, $url1, $count1);
  $cloud->add($tag2, $url2, $count2);
  $cloud->add($tag3, $url3, $count3);
  my $html = $cloud->html_and_css(50);
  

DESCRIPTION

The HTML::TagCloud module enables you to generate "tag clouds" in HTML. Tag clouds serve as a textual way to visualize terms and topics that are used most frequently. The tags are sorted alphabetically and a larger font is used to indicate more frequent term usage.

Example sites with tag clouds: http://www.43things.com/, http://www.astray.com/recipes/ and http://www.flickr.com/photos/tags/.

This module provides a simple interface to generating a CSS-based HTML tag cloud. You simply pass in a set of tags, their URL and their count. This module outputs stylesheet-based HTML. You may use the included CSS or use your own.

CONSTRUCTOR

new

The constructor takes one optional argument:

  my $cloud = HTML::TagCloud->new(levels=>10);

if not provided, levels defaults to 24

METHODS

add

This module adds a tag into the cloud. You pass in the tag name, its URL and its count:

  $cloud->add($tag1, $url1, $count1);
  $cloud->add($tag2, $url2, $count2);
  $cloud->add($tag3, $url3, $count3);

tags($limit)

Returns a list of hashrefs representing each tag in the cloud, sorted by alphabet. Each tag has the following keys: name, count, url and level.

css

This returns the CSS that will format the HTML returned by the html() method with tags which have a high count as larger:

  my $css  = $cloud->css;

html($limit)

This returns the tag cloud as HTML without the embedded CSS (you should use both css() and html() or simply the html_and_css() method). If a limit is provided, only the top $limit tags are in the cloud, otherwise all the tags are in the cloud:

  my $html = $cloud->html(200);

html_and_css($limit)

This returns the tag cloud as HTML with embedded CSS. If a limit is provided, only the top $limit tags are in the cloud, otherwise all the tags are in the cloud:

  my $html_and_css = $cloud->html_and_css(50);

AUTHOR

Leon Brocard, <acme@astray.com>.

COPYRIGHT

Copyright (C) 2005-6, Leon Brocard

This module is free software; you can redistribute it or modify it under the same terms as Perl itself.