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<?php
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/**
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* Implementation of hook_views_style_plugins()
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*/
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function nodecloud_views_style_plugins() {
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$plugins = array();
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$plugins['nodecloud'] = array(
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'name' => t('Node Cloud'),
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'theme' => 'nodecloud_display',
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'summary_theme' => 'nodecloud_display',
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'needs_fields' => true,
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);
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return $plugins;
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}
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/**
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* Implementation of the display theme
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*/
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function theme_nodecloud_display(&$view, &$items, $type) {
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// detect if the second sort field is something that we'll get back
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if (isset($view->sort[1])) {
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$sort_field = strtr($view->sort[1]['field'], '.', '_');
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$is = (array) $items[0];
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if (array_key_exists($sort_field, $is)) {
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$size_by = $sort_field;
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$order_by = $view->sort[1]['sortorder'];
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}
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}
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// if we couldn't set $size_by, see if there is a numeric result in the first item's fields
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if (!isset($size_by)) {
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foreach($items[0] as $key => $field) {
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if (is_numeric($field)) {
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$size_by = $key;
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$order_by = 'DESC';
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break;
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}
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}
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}
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if (!isset($size_by)) {
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$size_by = 'nid'; // guaranteed to be in every view
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$order_by = 'DESC';
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}
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$fields = _views_get_fields();
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$total = count($items);
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$half_way = ceil($total/2);
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// find the min and max values of the $size_by field
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foreach($items as $key => $item) {
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$sizes[] = $item->$size_by;
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}
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if ($order_by == 'DESC') {
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$realmax = max($sizes);
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$realmin = min($sizes);
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} else {
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$realmax = min($sizes);
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$realmin = max($sizes);
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}
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if (!isset($realmax)) {
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$realmax = 0;
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}
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if (!isset($realmin)) {
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$realmin = 0;
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}
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if (($realmax - $realmin) == 0) {
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$realmax += 1; // fudge factor incase things go badly....
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}
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// resize max and min on to the range of text sizes we've defined
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$localmax = variable_get('nodecloud_max', NODECLOUD_MAX);
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$localmin = variable_get('nodecloud_min', NODECLOUD_MIN);
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$strengths = array();
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foreach($items as $key => $item) {
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$strength = ((($localmax - $localmin) * (($item->$size_by - $realmin) / ($realmax - $realmin))) / $localmin) + $localmin ;
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$strengths[$key]['item'] = $item;
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$strengths[$key]['em'] = $strength;
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}
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$clouds = '';
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foreach ($strengths as $unit) {
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$clouds .= theme('nodecloud_item', $view, $unit['item'], $unit['em']);
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}
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if ($clouds) {
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drupal_add_css(drupal_get_path('module', 'nodecloud') . '/nodecloud.css');
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return "<div style=\"line-height: ". ($localmax) . "em;\" class=\"nodecloud-cloud\">" . $clouds . "</div>";
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}
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}
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/**
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* Formats individual cloud items.
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*/
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function theme_nodecloud_item($view, $item, $size) {
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foreach ($view->field as $field) {
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if ($fields[$field['id']]['visible'] !== FALSE) {
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if ($field['label']) {
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$cloud .= "<span class=\"view-label ". views_css_safe('view-label-'. $field['queryname']) ."\">" . $field['label'] . "</span>\n";
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}
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$cloud .= "<span class=\"view-field ". views_css_safe('view-data-'. $field['queryname']) ."\">" . views_theme_field('views_handle_field', $field['queryname'], $fields, $field, $item, $view) . "</span>\n";
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}
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}
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if (!trim($cloud)) {
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$node = node_load($item->nid);
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$cloud = l($node->title, 'node/' . $node->nid);
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}
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return "<span style=\"font-size: ". $size ."em;\" class=\"view-item ". views_css_safe('view-item-'. $view->name) ."\">". $cloud ."</span>\n";
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}
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