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-rw-r--r--lib/tagcloudsection.php113
1 files changed, 113 insertions, 0 deletions
diff --git a/lib/tagcloudsection.php b/lib/tagcloudsection.php
new file mode 100644
index 000000000..121dfc499
--- /dev/null
+++ b/lib/tagcloudsection.php
@@ -0,0 +1,113 @@
+<?php
+/**
+ * Laconica, the distributed open-source microblogging tool
+ *
+ * Base class for sections showing tag clouds
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category Widget
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @copyright 2009 Control Yourself, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ */
+
+if (!defined('LACONICA')) {
+ exit(1);
+}
+
+define('TAGS_PER_SECTION', 20);
+
+/**
+ * Base class for sections
+ *
+ * These are the widgets that show interesting data about a person
+ * group, or site.
+ *
+ * @category Widget
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ */
+
+class TagCloudSection extends Section
+{
+ function showContent()
+ {
+ $tags = $this->getTags();
+
+ if (!$tags) {
+ return false;
+ }
+
+ $cnt = 0;
+
+ $tw = array();
+ $sum = 0;
+
+ while ($tags->fetch() && ++$cnt <= TAGS_PER_SECTION) {
+ $tw[$tags->tag] = $tags->weight;
+ $sum += $tags->weight;
+ }
+
+ ksort($tw);
+
+ $this->out->elementStart('ul', 'tags xoxo tag-cloud');
+ foreach ($tw as $tag => $weight) {
+ $this->showTag($tag, $weight, $weight/$sum);
+ }
+ $this->out->elementEnd('ul');
+
+ return ($cnt > TAGS_PER_SECTION);
+ }
+
+ function getTags()
+ {
+ return null;
+ }
+
+ function showTag($tag, $weight, $relative)
+ {
+ if ($relative > 0.1) {
+ $rel = 'tag-cloud-7';
+ } else if ($relative > 0.05) {
+ $rel = 'tag-cloud-6';
+ } else if ($relative > 0.02) {
+ $rel = 'tag-cloud-5';
+ } else if ($relative > 0.01) {
+ $rel = 'tag-cloud-4';
+ } else if ($relative > 0.005) {
+ $rel = 'tag-cloud-3';
+ } else if ($relative > 0.002) {
+ $rel = 'tag-cloud-2';
+ } else {
+ $rel = 'tag-cloud-1';
+ }
+
+ $this->out->elementStart('li', $rel);
+ $this->out->element('a', array('href' => $this->tagUrl($tag)),
+ $tag);
+ $this->out->elementEnd('li');
+ }
+
+ function tagUrl($tag)
+ {
+ return common_local_url('tag', array('tag' => $tag));
+ }
+}