friendica-addons/fancybox/fancybox.php

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<?php
/**
* Name: Fancybox
* Description: Open media attachments of posts into a fancybox overlay.
* Version: 1.05
* Author: Grischa Brockhaus <grischa@brockha.us>
*/
use Friendica\App;
use Friendica\Core\Hook;
use Friendica\DI;
function fancybox_install()
{
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Hook::register('head', __FILE__, 'fancybox_head');
Hook::register('footer', __FILE__, 'fancybox_footer');
Hook::register('prepare_body_final', __FILE__, 'fancybox_render');
}
function fancybox_head(string &$b)
{
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DI::page()->registerStylesheet(__DIR__ . '/asset/fancybox/jquery.fancybox.min.css');
}
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function fancybox_footer(string &$str)
{
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DI::page()->registerFooterScript(__DIR__ . '/asset/fancybox/jquery.fancybox.min.js');
DI::page()->registerFooterScript(__DIR__ . '/asset/fancybox/fancybox.config.js');
}
function fancybox_render(array &$b){
$gallery = 'gallery-' . $b['item']['uri-id'] ?? random_int(1000000, 10000000);
// performWithEscapedBlocks escapes block defined with 2nd par pattern that won't be processed.
// We don't want to touch images in class="type-link":
$b['html'] = \Friendica\Util\Strings::performWithEscapedBlocks(
$b['html'],
'#<div class="type-link">.*?</div>#s',
function ($text) use ($gallery) {
// This processes images inlined in posts
// Frio / Vier hooks für lightbox are un-hooked in fancybox-config.js. So this works for them, too!
//if (!in_array(DI::app()->getCurrentTheme(),['vier','frio']))
$text = preg_replace(
'#<a[^>]*href="([^"]*)"[^>]*>(<img[^>]*src="[^"]*"[^>]*>)</a>#',
'<a data-fancybox="' . $gallery . '" href="$1">$2</a>',
$text);
// Local content images attached:
$text = preg_replace_callback(
'#<div class="(body-attach|imagegrid-column)">.*?</div>#s',
function ($matches) use ($gallery) {
return str_replace('<a href', '<a data-fancybox="' . $gallery . '" href', $matches[0]);
},
$text
);
return $text;
}
);
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}