https://www.belmot.de/o/mannheimer-theme/js/vendor/photoswipe/photoswipe_slick_cropper.js

1var cropSlickImages = function () {
2
3    var galleries = document.querySelectorAll('.my-gallery');
4    for (var i = 0, l = galleries.length; i < l; i++) {
5        var gallery = galleries[i];
6        var figures = gallery.getElementsByTagName('figure');
7        for (var j = 0, m = figures.length; j < m; j++) {
8
9            var figure = figures[j];
10            var figureWidth = getComputedDimension(figure, "width");
11            var figureHeight = getComputedDimension(figure, "height");
12
13            var imageDimension = figure.getElementsByTagName('a')[0].getAttribute('data-size');
14
15            // console.log(imageDimension);
16
17            var imageWidth = Number(imageDimension.split('x')[0]);
18            var imageHeight = Number(imageDimension.split('x')[1]);
19
20            // console.log('Look Up');
21
22            var image = figure.getElementsByTagName('img')[0];
23
24            if (imageWidth / imageHeight == 1) {
25                //slick macht das schon
26            }
27            if (imageWidth < imageHeight) { //portrait
28                // console.log('portrait');
29                var thumbHeight = (figureWidth / imageWidth) * imageHeight;
30
31                image.style.width = figureWidth.toString() + 'px';
32                image.style.height = thumbHeight.toString() + 'px';
33
34                var margin = (thumbHeight - figureHeight) / 2;
35
36                image.style.marginTop = "-" + margin.toString() + 'px';
37
38
39            }
40            if (imageWidth > imageHeight) { // landscape
41                // console.log('landscape');
42                var thumbWidth = (figureHeight / imageHeight) * imageWidth;
43
44                image.style.height = figureHeight.toString() + 'px';
45                image.style.minWidth = thumbWidth.toString() + 'px';
46
47                var margin = (thumbWidth - figureWidth) / 2;
48
49                image.style.marginLeft = "-" + margin.toString() + "px";
50            }
51        }
52    }
53
54
55    function getComputedDimension(tag, dimension) {
56        var dimension = Number(window.getComputedStyle(tag, null).getPropertyValue(dimension).slice(0, -2));
57        return dimension;
58    }
59
60};
61
62jQuery(document).ready(function () {
63    cropSlickImages();
64});
65
66/*jQuery(window).bind('resize', function() {
67	cropSlickImages();	
68});*/
69