https://fotografemelhor.com.br/wp-content/themes/socha/js/libs/mwheelIntent.js?ver=2.7

1/**
2 * @author trixta
3 * @version 1.2
4 */
5(function($){
6
7    var mwheelI = {
8            pos: [-260, -260]
9        },
10        minDif 	= 3,
11        doc 	= document,
12        root 	= doc.documentElement,
13        body 	= doc.body,
14        longDelay, shortDelay
15        ;
16
17    function unsetPos(){
18        if(this === mwheelI.elem){
19            mwheelI.pos = [-260, -260];
20            mwheelI.elem = false;
21            minDif = 3;
22        }
23    }
24
25    $.event.special.mwheelIntent = {
26        setup: function(){
27            var jElm = $(this).bind('mousewheel', $.event.special.mwheelIntent.handler);
28            if( this !== doc && this !== root && this !== body ){
29                jElm.bind('mouseleave', unsetPos);
30            }
31            jElm = null;
32            return true;
33        },
34        teardown: function(){
35            $(this)
36                .unbind('mousewheel', $.event.special.mwheelIntent.handler)
37                .unbind('mouseleave', unsetPos)
38            ;
39            return true;
40        },
41        handler: function(e, d){
42            var pos = [e.clientX, e.clientY];
43            if( this === mwheelI.elem || Math.abs(mwheelI.pos[0] - pos[0]) > minDif || Math.abs(mwheelI.pos[1] - pos[1]) > minDif ){
44                mwheelI.elem = this;
45                mwheelI.pos = pos;
46                minDif = 250;
47
48                clearTimeout(shortDelay);
49                shortDelay = setTimeout(function(){
50                    minDif = 10;
51                }, 200);
52                clearTimeout(longDelay);
53                longDelay = setTimeout(function(){
54                    minDif = 3;
55                }, 1500);
56                e = $.extend({}, e, {type: 'mwheelIntent'});
57                return $.event.handle.apply(this, arguments);
58            }
59        }
60    };
61    $.fn.extend({
62        mwheelIntent: function(fn) {
63            return fn ? this.bind("mwheelIntent", fn) : this.trigger("mwheelIntent");
64        },
65
66        unmwheelIntent: function(fn) {
67            return this.unbind("mwheelIntent", fn);
68        }
69    });
70
71    $(function(){
72        body = doc.body;
73        //assume that document is always scrollable, doesn't hurt if not
74        $(doc).bind('mwheelIntent.mwheelIntentDefault', $.noop);
75    });
76})(jQuery);