https://konradfischergalerie.de/lib/g/2.0/scripts/artlogic_modules…/galleries_js/scroll.js

1import sub_navigation from './sub_navigation.js';
2import scroll_sections from './scroll_sections.js'
3import throttle from './throttle.js';
4import debounce from './debounce.js';
5
6var scroll = {
7
8    last_scroll_position: 0,
9    scrolling_down_offset: 50,
10            
11  init: function() {
12      
13    //   var last_scroll_position = 0;
14    //   var scrolling_down_offset = 50;
15      $(window).on('scroll', window.galleries.throttle(50, function() {
16          window.galleries.scroll.run();
17      }));
18      $(window).on('scroll', window.galleries.debounce(200, function() {
19          window.galleries.scroll.run();
20      }));
21      window.galleries.scroll.run();
22      
23  },
24  
25  run: function() {
26      var scroll_top = $(window).scrollTop();
27      if (scroll_top > 0) {
28          if (this.last_scroll_position > scroll_top) {
29              if (this.last_scroll_position + 5 > scroll_top) {
30                  if (!$('body').hasClass('window-forced-scroll-up')) {
31                      if (!$('body').hasClass('page-popup-active') && !$('body').hasClass('overlay-open') && !$('body').hasClass('slide-nav-open')) {
32                          $('#container').addClass('scrolling-up');
33                          $('#container').removeClass('scrolling-down');
34                          window.galleries.sub_navigation.enable_page_header(scroll_top, 'up');
35                      }
36                  }
37              }
38          } else {
39              if (scroll_top > this.last_scroll_position) {
40                  if (scroll_top > this.scrolling_down_offset) {
41                      if (!$('body').hasClass('page-popup-active') && !$('body').hasClass('overlay-open') && !$('body').hasClass('slide-nav-open')) {
42                          $('#container').removeClass('scrolling-up');
43                          $('#container').addClass('scrolling-down');
44                          window.galleries.sub_navigation.enable_page_header(scroll_top, 'down');
45                      }
46                  }
47              }
48          }
49      } else {
50          $('#container').removeClass('scrolling-down scrolling-up');
51      }
52      if ($('body').hasClass('page-popup-visible')) {
53          $('#container').removeClass('page-top page-top-proximity');
54      } else {
55          if ($(window).scrollTop() > 40) {
56              if ($('#container').hasClass('page-top')) {
57                  $('#container').removeClass('page-top');
58              }
59              if (!$('#container').hasClass('page-scroll')) {
60                  $('#container').addClass('page-scroll');
61              }
62              if ($('#top_nav #full_nav .top.open').length) {
63                $('#top_nav #full_nav .top.open').removeClass('open');
64              }
65          } else {
66              if (!$('#container').hasClass('page-top')) {
67                  $('#container').addClass('page-top');
68              }
69              if ($('#container').hasClass('page-scroll')) {
70                  $('#container').removeClass('page-scroll');
71              }
72          }
73      }
74      
75      if ($('.record-page-content-combined').length) {
76          window.galleries.scroll_sections.subnav_active_change();
77      }
78      
79      this.last_scroll_position = $(window).scrollTop();
80      
81  }
82  
83}
84
85window.galleries = window.galleries || {};
86window.galleries.scroll = scroll;
87export default scroll;