https://www.perenniculum.cz/wp-content/themes/perenniculum/assets/…/gallery-beds.js?ver=1781268575

1(function ($) {
2    'use strict';
3
4    var VISIBLE = 4;
5
6    function initGalleryBeds() {
7        var $sliders = $('.digi-gallery-beds .gallery-beds-slider');
8        if (!$sliders.length) return;
9
10        $sliders.each(function () {
11            var $slider  = $(this);
12            var $track   = $slider.find('.gallery-beds-slider__track');
13            var $items   = $slider.find('.gallery-beds-slider__item');
14            var total    = $items.length;
15            var current  = 0;
16
17            function getVisible() {
18                var w = $slider.width();
19                if (w < 640)  return 1;
20                if (w < 1024) return 2;
21                return VISIBLE;
22            }
23
24            function updateSlider() {
25                var vis    = getVisible();
26                var maxIdx = Math.max(0, total - vis);
27                if (current > maxIdx) current = maxIdx;
28
29                var itemW   = $slider.find('.gallery-beds-slider__viewport').width() / vis;
30                var offset  = -(current * itemW);
31
32                $items.css('width', itemW + 'px');
33                $track.css('transform', 'translateX(' + offset + 'px)');
34
35                $slider.find('.gallery-beds-slider__prev').toggleClass('is-hidden', current <= 0);
36                $slider.find('.gallery-beds-slider__next').toggleClass('is-hidden', current >= maxIdx);
37            }
38
39            $slider.find('.js-gb-prev').on('click', function () {
40                if (current > 0) { current--; updateSlider(); }
41            });
42
43            $slider.find('.js-gb-next').on('click', function () {
44                var maxIdx = Math.max(0, total - getVisible());
45                if (current < maxIdx) { current++; updateSlider(); }
46            });
47
48            updateSlider();
49            $(window).on('resize.gbSlider', updateSlider);
50        });
51    }
52
53    $(document).ready(initGalleryBeds);
54
55}(jQuery));