https://nora.fo/ease/3rdparty/js/Qodio/fm.revealator.jquery.js?v=3.11.7.6_0

1/*
2 Revealator jQuery Plugin
3 Revealator is a jQuery-based plugin for adding effects to elements that enter the window. It's simple, and easy to use.
4 version 1.4, Jan 11th, 2016
5 by Ingi P. Jacobsen
6
7 The MIT License (MIT)
8
9 Copyright (c) 2016 Faroe Media
10
11 Permission is hereby granted, free of charge, to any person obtaining a copy
12 of this software and associated documentation files (the "Software"), to deal
13 in the Software without restriction, including without limitation the rights
14 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 copies of the Software, and to permit persons to whom the Software is
16 furnished to do so, subject to the following conditions:
17
18 The above copyright notice and this permission notice shall be included in all
19 copies or substantial portions of the Software.
20
21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 SOFTWARE.
28 */
29
30
31var Revealator = typeof Revealator !== 'undefined' ? Revealator : {};
32
33$(function () {
34	Revealator = $.extend({}, {
35		timer:           null,
36		busy:            false,
37		scroll_padding:  0,
38		effects_padding: 0,
39		refresh:         function () {}
40	}, typeof Revealator !== 'undefined' ? Revealator : {});
41
42	Revealator.refresh = function () {
43		var $window = $(window);
44		var $document = $(document);
45		var $body = $(document.body);
46		var i = 0;
47		var window_top = Revealator.effects_padding;
48		var window_bottom = $window.height() - Revealator.effects_padding;
49		var document_top = Revealator.scroll_padding;
50		var document_bottom = $document.height() - Revealator.scroll_padding;
51
52		if ($window.scrollTop() === 0) {
53			if (!$body.hasClass('scroll-at-top')) {
54				$body.addClass('scroll-at-top').removeClass('scroll-at-bottom').removeClass('scroll-near-top').removeClass('scroll-near-bottom').removeClass('scroll-in-between');
55			}
56		} else if ($window.scrollTop() + $window.height() === $document.height()) {
57			if (!$body.hasClass('scroll-at-bottom')) {
58				$body.addClass('scroll-at-bottom').removeClass('scroll-at-top').removeClass('scroll-near-top').removeClass('scroll-near-bottom').removeClass('scroll-in-between');
59			}
60		} else if ($window.scrollTop() <= document_top) {
61			if (!$body.hasClass('scroll-near-top')) {
62				$body.addClass('scroll-near-top').removeClass('scroll-near-bottom').removeClass('scroll-at-top').removeClass('scroll-at-bottom').removeClass('scroll-in-between');
63			}
64		} else if ($window.scrollTop() + $window.height() >= document_bottom) {
65			if (!$body.hasClass('scroll-near-bottom')) {
66				$body.addClass('scroll-near-bottom').removeClass('scroll-near-top').removeClass('scroll-at-top').removeClass('scroll-at-bottom').removeClass('scroll-in-between');
67			}
68		} else {
69			if ($body.hasClass('scroll-at-top') || $body.hasClass('scroll-at-bottom') || $body.hasClass('scroll-near-top') || $body.hasClass('scroll-near-bottom')) {
70				$body.addClass('scroll-in-between').removeClass('scroll-at-top').removeClass('scroll-at-bottom').removeClass('scroll-near-top').removeClass('scroll-near-bottom');
71			}
72			if (!($body.hasClass('scroll-in-between') || $body.hasClass('scroll-at-top') || $body.hasClass('scroll-at-bottom') || $body.hasClass('scroll-near-top') || $body.hasClass('scroll-near-bottom'))) {
73				$body.addClass('scroll-in-between').removeClass('scroll-at-top').removeClass('scroll-at-bottom').removeClass('scroll-near-top').removeClass('scroll-near-bottom');
74			}
75		}
76		
77		$('*[class*="revealator"]').each(function () {
78			i++;
79			var element = this;
80			var $element = $(element);
81			var element_bounding = element.getBoundingClientRect();
82
83			var position_class = undefined;
84			if (element_bounding.top > window_bottom && element_bounding.bottom > window_bottom) {
85				position_class = 'revealator-below';
86			} else if (element_bounding.top < window_bottom && element_bounding.bottom > window_bottom) {
87				position_class = 'revealator-partially-below'
88			} else if (element_bounding.top < window_top && element_bounding.bottom > window_top) {
89				position_class = 'revealator-partially-above'
90			} else if (element_bounding.top < window_top && element_bounding.bottom < window_top) {
91				position_class = 'revealator-above';
92			} else {
93				position_class = 'revealator-within';
94			}
95
96			if ($element.hasClass('revealator-load') && !$element.hasClass('revealator-within')) {
97				$element.removeClass('revealator-below revealator-partially-below revealator-within revealator-partially-above revealator-above');
98				$element.addClass('revealator-within');
99			}
100
101			if (!$element.hasClass(position_class) && !$element.hasClass('revealator-load')) {
102				if ($element.hasClass('revealator-once')) {
103					if (!$element.hasClass('revealator-within')) {
104						$element.removeClass('revealator-below revealator-partially-below revealator-within revealator-partially-above revealator-above');
105						$element.addClass(position_class);
106					}
107					if ($element.hasClass('revealator-partially-above') || $element.hasClass('revealator-above')) {
108						$element.addClass('revealator-within');
109					}
110				} else {
111					$element.removeClass('revealator-below revealator-partially-below revealator-within revealator-partially-above revealator-above');
112					$element.addClass(position_class);
113				}
114			}
115		});
116	};
117
118	$(window).on('scroll resize load ready', function () {
119		if (!Revealator.busy) {
120			Revealator.busy = true;
121			setTimeout(function () {
122				Revealator.busy = false;
123				Revealator.refresh();

124			}, 100);
125		}
126	});
127});