change tag output to a tag cloud

darcs-hash:20080729193533-84dde-1e7deeb0c7d7fb7686653be17d197e871aded8be.gz

diff --git a/actions/tag.php b/actions/tag.php
index 9e0b093243002ba86ee3aeef0239a120511c5123..cc95690e21675f783dc780c8b34ea01a722689ee 100644 (file)
--- a/actions/tag.php
+++ b/actions/tag.php
@@ -20,7 +20,8 @@
 if (!defined('LACONICA')) { exit(1); }
 
 require_once(INSTALLDIR.'/actions/showstream.php');
-define('TAGS_PER_PAGE', 20);
+define('TAGS_PER_PAGE', 100);
+define('AGE_FACTOR', 864000.0);
 
 class TagAction extends StreamAction {
 
@@ -86,66 +87,54 @@ class TagAction extends StreamAction {
 
        function show_tags()
        {
+               # This should probably be cached rather than recalculated
                $tags = DB_DataObject::factory('Notice_tag');
-               $tags->selectAdd('count(1) as num');
                $tags->selectAdd('max(notice_id) as last_notice_id');
+               $tags->selectAdd(sprintf('sum(exp(-(now() - created)/%f)) as weight', AGE_FACTOR));
                $tags->groupBy('tag');
-               $tags->orderBy('num DESC, last_notice_id DESC');
-               $tags->whereAdd('created > "' . strftime('%Y-%m-%d %H:%M:%S', strtotime('-1 WEEK')) . '"');
+               $tags->orderBy('weight DESC');
 
-               $page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
+               # $tags->whereAdd('created > "' . strftime('%Y-%m-%d %H:%M:%S', strtotime('-1 MONTH')) . '"');
 
-               $tags->limit((($page-1)*TAGS_PER_PAGE), TAGS_PER_PAGE + 1);
+               $tags->limit(TAGS_PER_PAGE);
 
                $cnt = $tags->find();
 
                if ($cnt > 0) {
-                       common_element_start('ul', array('id' => 'notices'));
-                       for ($i = 0; $i < min($cnt, TAGS_PER_PAGE); $i++) {
-                               if ($tags->fetch()) {
-                                       TagAction::show_tag($tags);
-                               } else {
-                                       // shouldn't happen!
-                                       break;
-                               }
+                       common_element_start('p', 'tagcloud');
+                       
+                       $tw = array();
+                       $sum = 0;
+                       while ($tags->fetch()) {
+                               $tw[$tags->tag] = $tags->weight;
+                               $sum += $tags->weight;
                        }
-                       common_element_end('ul');
-               }
-
-               common_pagination($page > 1, $cnt > TAGS_PER_PAGE,
-                                                 $page, 'tags');
-       }
-
-       private static function show_tag($tag) {
-               common_element_start('li', array('class' => 'notice_single'));
-               common_element_start('a', array(
-                                                       'class' => 'nickname',
-                                                       'href' => common_local_url('tag', array('tag' => $tag->tag)),
-                                                       'title' => sprintf(_("Notices tagged with %s"), $tag->tag)));
-               common_text('#' . $tag->tag);
-               common_element_end('a');
-               common_text(sprintf(_('%s Notices recently tagged with %s'), $tag->num, $tag->tag));
-
-               $notice = Notice::staticGet($tag->last_notice_id);
-               if ($notice) {
-                       $noticeurl = common_local_url('shownotice', array('notice' => $notice->id));
-                       common_element_start('p', 'time');
-                       common_text(_('Last message posted: '));
-                       common_element('a', array('class' => 'permalink',
-                                                                         'href' => $noticeurl,
-                                                                         'title' => common_exact_date($notice->created)),
-                                                       common_date_string($notice->created));
-
-                       common_text(_(' by '));
-                       $profile = $notice->getProfile();
-                       common_element('a', array('href' => $profile->profileurl),
-                                                  $profile->nickname);
+                       
+                       foreach ($tw as $tag => $weight) {
+                               $this->show_tag($tag, $weight/$sum);
+                       }
+                       
                        common_element_end('p');
                }
-               common_element_end('li');
        }
 
-
+       function show_tag($tag, $relative) {
+               
+               # XXX: these should probably tune to the size of the site
+               $cls = ($relative > 0.1) ? 'largest' :
+               ($relative > 0.05) ? 'verylarge' :
+               ($relative > 0.02) ? 'large' :
+               ($relative > 0.01) ? 'medium' :
+               ($relative > 0.005) ? 'small' :
+               ($relative > 0.002) ? 'verysmall' :
+               'smallest';
+               
+               common_element('a', array('class' => $cls,
+                                                                 'href' => common_local_url('tag', array('tag' => $tag))),
+                                          $tag);
+               common_text(' ');
+       }
+       
        function show_notices($tag) {
 
                $tags = DB_DataObject::factory('Notice_tag');

diff --git a/theme/stoica/display.css b/theme/stoica/display.css
index 60d4770699e7e3739b568784b1a730550eb25dde..257a1e7b97aca1fd410b8fb3eaf507f4dffd7d2e 100644 (file)
--- a/theme/stoica/display.css
+++ b/theme/stoica/display.css
@@ -646,3 +646,32 @@ input#openid_url {
 }
 
 /* ===== End Forms Styling ===== */
+
+/* ===== Tag Cloud Styling ===== */
+
+p#tagcloud largest {
+font-size: xx-large;
+}
+p#tagcloud verylarge {
+font-size: x-large;
+}
+
+p#tagcloud large {
+font-size: large;
+}
+
+p#tagcloud medium {
+font-size: medium;
+}
+
+p#tagcloud small {
+font-size: small;
+}
+
+p#tagcloud verysmall {
+font-size: x-small;
+}
+
+p#tagcloud smallest {
+font-size: xx-small;
+}