1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
<?php
declare(strict_types=1);
namespace Shaarli\Front\Controller;
use Slim\Http\Request;
use Slim\Http\Response;
/**
* Class TagCloud
*
* Slim controller used to render the tag cloud page.
*
* @package Front\Controller
*/
class TagCloudController extends ShaarliController
{
/**
* Display the tag cloud through the template engine.
* This controller a few filters:
* - Visibility stored in the session for logged in users
* - `searchtags` query parameter: will return tags associated with filter in at least one bookmark
*/
public function cloud(Request $request, Response $response): Response
{
if ($this->container->loginManager->isLoggedIn() === true) {
$visibility = $this->container->sessionManager->getSessionParameter('visibility');
}
$searchTags = $request->getQueryParam('searchtags');
$filteringTags = $searchTags !== null ? explode(' ', $searchTags) : [];
$tags = $this->container->bookmarkService->bookmarksCountPerTag($filteringTags, $visibility ?? null);
// TODO: the sorting should be handled by bookmarkService instead of the controller
alphabetical_sort($tags, false, true);
$tagList = $this->formatTagsForCloud($tags);
$searchTags = implode(' ', escape($filteringTags));
$data = [
'search_tags' => $searchTags,
'tags' => $tagList,
];
$data = $this->executeHooks($data);
foreach ($data as $key => $value) {
$this->assignView($key, $value);
}
$searchTags = !empty($searchTags) ? $searchTags .' - ' : '';
$this->assignView(
'pagetitle',
$searchTags . t('Tag cloud') .' - '. $this->container->conf->get('general.title', 'Shaarli')
);
return $response->write($this->render('tag.cloud'));
}
protected function formatTagsForCloud(array $tags): array
{
// We sort tags alphabetically, then choose a font size according to count.
// First, find max value.
$maxCount = count($tags) > 0 ? max($tags) : 0;
$logMaxCount = $maxCount > 1 ? log($maxCount, 30) : 1;
$tagList = [];
foreach ($tags as $key => $value) {
// Tag font size scaling:
// default 15 and 30 logarithm bases affect scaling,
// 2.2 and 0.8 are arbitrary font sizes in em.
$size = log($value, 15) / $logMaxCount * 2.2 + 0.8;
$tagList[$key] = [
'count' => $value,
'size' => number_format($size, 2, '.', ''),
];
}
return $tagList;
}
/**
* @param mixed[] $data Template data
*
* @return mixed[] Template data after active plugins render_picwall hook execution.
*/
protected function executeHooks(array $data): array
{
$this->container->pluginManager->executeHooks(
'render_tagcloud',
$data,
['loggedin' => $this->container->loginManager->isLoggedIn()]
);
return $data;
}
}
|
