https://a-crane.com.ua/wp-content/themes/mustang-lite/assets/js/appear/jquery.appear.min.js?ver=1.5.2

1/*
2 * Viewport - jQuery selectors for finding elements in viewport
3 *
4 * Copyright (c) 2008-2009 Mika Tuupola
5 *
6 * Licensed under the MIT license:
7 *   http://www.opensource.org/licenses/mit-license.php
8 *
9 * Project home:
10 *  http://www.appelsiini.net/projects/viewport
11 *
12 */
13(function($) {
14	$.belowthefold = function(element, settings) {
15		var fold = $(window).height() + $(window).scrollTop();
16		return fold <= $(element).offset().top - settings.threshold;
17	};
18	$.abovethetop = function(element, settings) {
19		var top = $(window).scrollTop();
20		return top >= $(element).offset().top + $(element).height() - settings.threshold;
21	};
22	$.rightofscreen = function(element, settings) {
23		var fold = $(window).width() + $(window).scrollLeft();
24		return fold <= $(element).offset().left - settings.threshold;
25	};
26	$.leftofscreen = function(element, settings) {
27		var left = $(window).scrollLeft();
28		return left >= $(element).offset().left + $(element).width() - settings.threshold;
29	};
30	$.inviewport = function(element, settings) {
31		return !$.rightofscreen(element, settings) && !$.leftofscreen(element, settings) && !$.belowthefold(element, settings) && !$.abovethetop(element, settings);
32	};
33	$.extend($.expr[':'], {
34		"below-the-fold": function(a, i, m) {
35			return $.belowthefold(a, {threshold : 0});
36		},
37		"above-the-top": function(a, i, m) {
38			return $.abovethetop(a, {threshold : 0});
39		},
40		"left-of-screen": function(a, i, m) {
41			return $.leftofscreen(a, {threshold : 0});
42		},
43		"right-of-screen": function(a, i, m) {
44			return $.rightofscreen(a, {threshold : 0});
45		},
46		"in-viewport": function(a, i, m) {
47			return $.inviewport(a, {threshold : 0});
48		}
49	});
50})(jQuery);
51
52
53
54/*
55 * jQuery appear plugin
56 *
57 * Copyright (c) 2012 Andrey Sidorov
58 * licensed under MIT license.
59 *
60 * https://github.com/morr/jquery.appear/
61 *
62 * Version: 0.3.4
63 */
64(function($) {
65  var selectors = [];
66
67  var check_binded = false;
68  var check_lock = false;
69  var defaults = {
70    interval: 250,
71    force_process: false
72  }
73  var $window = $(window);
74
75  var $prior_appeared;
76
77  function process() {
78    check_lock = false;
79    for (var index = 0, selectorsLength = selectors.length; index < selectorsLength; index++) {
80      var $appeared = $(selectors[index]).filter(function() {
81        return $(this).is(':appeared');
82      });
83
84      $appeared.trigger('appear', [$appeared]);
85
86      if ($prior_appeared) {
87        var $disappeared = $prior_appeared.not($appeared);
88        $disappeared.trigger('disappear', [$disappeared]);
89      }
90      $prior_appeared = $appeared;
91    }
92  }
93
94  // "appeared" custom filter
95  $.expr[':']['appeared'] = function(element) {
96    var $element = $(element);
97    if (!$element.is(':visible')) {
98      return false;
99    }
100
101    var window_left = $window.scrollLeft();
102    var window_top = $window.scrollTop();
103    var offset = $element.offset();
104    var left = offset.left;
105    var top = offset.top;
106
107    if (top + $element.height() >= window_top &&
108        top - ($element.data('appear-top-offset') || 0) <= window_top + $window.height() &&
109        left + $element.width() >= window_left &&
110        left - ($element.data('appear-left-offset') || 0) <= window_left + $window.width()) {
111      return true;
112    } else {
113      return false;
114    }
115  }
116
117  $.fn.extend({
118    // watching for element's appearance in browser viewport
119    appear: function(options) {
120      var opts = $.extend({}, defaults, options || {});
121      var selector = this.selector || this;
122      if (!check_binded) {
123        var on_check = function() {
124          if (check_lock) {
125            return;
126          }
127          check_lock = true;
128
129          setTimeout(process, opts.interval);
130        };
131
132        $(window).scroll(on_check).resize(on_check);
133        check_binded = true;
134      }
135
136      if (opts.force_process) {
137        setTimeout(process, opts.interval);
138      }
139      selectors.push(selector);
140      return $(selector);
141    }
142  });
143
144  $.extend({
145    // force elements's appearance check
146    force_appear: function() {
147      if (check_binded) {
148        process();
149        return true;
150      };
151      return false;
152    }
153  });
154})(jQuery);