<?php /* Question2Answer by Gideon Greenspan and contributors http://www.question2answer.org/ File: qa-plugin/tag-cloud-widget/qa-tag-cloud.php Description: Widget module class for tag cloud plugin This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 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 General Public License for more details. More about this license: http://www.question2answer.org/license.php */ class qa_tag_cloud { public function option_default($option) { if ($option === 'tag_cloud_count_tags') return 100; if ($option === 'tag_cloud_font_size') return 24; if ($option === 'tag_cloud_minimal_font_size') return 8; if ($option === 'tag_cloud_size_popular') return true; } public function admin_form() { $saved = qa_clicked('tag_cloud_save_button'); if ($saved) { qa_opt('tag_cloud_count_tags', (int) qa_post_text('tag_cloud_count_tags_field')); qa_opt('tag_cloud_font_size', (int) qa_post_text('tag_cloud_font_size_field')); qa_opt('tag_cloud_minimal_font_size', (int) qa_post_text('tag_cloud_minimal_font_size_field')); qa_opt('tag_cloud_size_popular', (int) qa_post_text('tag_cloud_size_popular_field')); } return array( 'ok' => $saved ? 'Tag cloud settings saved' : null, 'fields' => array( array( 'label' => 'Maximum tags to show:', 'type' => 'number', 'value' => (int) qa_opt('tag_cloud_count_tags'), 'suffix' => 'tags', 'tags' => 'name="tag_cloud_count_tags_field"', ), array( 'label' => 'Biggest font size:', 'suffix' => 'pixels', 'type' => 'number', 'value' => (int) qa_opt('tag_cloud_font_size'), 'tags' => 'name="tag_cloud_font_size_field"', ), array( 'label' => 'Smallest allowed font size:', 'suffix' => 'pixels', 'type' => 'number', 'value' => (int) qa_opt('tag_cloud_minimal_font_size'), 'tags' => 'name="tag_cloud_minimal_font_size_field"', ), array( 'label' => 'Font size represents tag popularity', 'type' => 'checkbox', 'value' => qa_opt('tag_cloud_size_popular'), 'tags' => 'name="tag_cloud_size_popular_field"', ), ), 'buttons' => array( array( 'label' => 'Save Changes', 'tags' => 'name="tag_cloud_save_button"', ), ), ); } public function allow_template($template) { $allowed = array( 'activity', 'qa', 'questions', 'hot', 'ask', 'categories', 'question', 'tag', 'tags', 'unanswered', 'user', 'users', 'search', 'admin', 'custom', ); return in_array($template, $allowed); } public function allow_region($region) { return ($region === 'side'); } public function output_widget($region, $place, $themeobject, $template, $request, $qa_content) { require_once QA_INCLUDE_DIR.'db/selects.php'; $populartags = qa_db_single_select(qa_db_popular_tags_selectspec(0, (int) qa_opt('tag_cloud_count_tags'))); $maxcount = reset($populartags); $themeobject->output(sprintf('<h2 style="margin-top: 0; padding-top: 0;">%s</h2>', qa_lang_html('main/popular_tags'))); $themeobject->output('<div style="font-size: 10px;">'); $maxsize = qa_opt('tag_cloud_font_size'); $minsize = qa_opt('tag_cloud_minimal_font_size'); $scale = qa_opt('tag_cloud_size_popular'); $blockwordspreg = qa_get_block_words_preg(); foreach ($populartags as $tag => $count) { $matches = qa_block_words_match_all($tag, $blockwordspreg); if (empty($matches)) { if ($scale) { $size = number_format($maxsize * $count / $maxcount, 1); if ($size < $minsize) $size = $minsize; } else $size = $maxsize; $themeobject->output(sprintf('<a href="%s" style="font-size: %dpx; vertical-align: baseline;">%s</a>', qa_path_html('tag/' . $tag), $size, qa_html($tag))); } } $themeobject->output('</div>'); } }