https://nagano-midwife.com/wordpress/wp-content/themes/cyber/js/fi…?ver=5.1.19&fver=20190106063521

1/*
2 * 	fitSidebar 0.1 - jQuery plugin
3 *	written by cyokodog
4 *
5 *	Copyright (c) 2014 cyokodog 
6 *		http://www.cyokodog.net/
7 *		http://d.hatena.ne.jp/cyokodog/)
8 *		http://cyokodog.tumblr.com/
9 *	MIT LICENCE
10 *
11 *	Built for jQuery library
12 *	http://jquery.com
13 *
14 */
15;(function($){
16	var s = $.fitSidebar = function(target, option){
17		var o = this, c = o.config = $.extend({}, s.defaults, option);
18		c.target = $(target).addClass('fit-sidebar');
19		c.blank = $('<div/>').addClass(s.id + '-blank').insertBefore(c.target);
20		c.blank.css('border','solid 1px #fff');
21		c.blank.css({
22			'margin-top' : c.target.css('margin-top'),
23			'margin-right' : c.target.css('margin-right'),
24			'margin-bottom' : c.target.css('margin-bottom'),
25			'margin-left' : c.target.css('margin-left'),
26			'border-top-width' : c.target.css('border-top-width'),
27			'border-right-width' : c.target.css('border-right-width'),
28			'border-bottom-width' : c.target.css('border-bottom-width'),
29			'border-left-width' : c.target.css('border-left-width'),
30			'padding-top' : c.target.css('padding-top'),
31			'padding-right' : c.target.css('padding-right'),
32			'padding-bottom' : c.target.css('padding-bottom'),
33			'padding-left' : c.target.css('padding-left')
34		});
35		c.wrapper = $(c.target).parents(c.wrapper);
36		c._win = $(window)
37			.on('scroll', function(){
38				o.adjustPosition();
39			})
40			.on('resize', function(){
41				c.target.hasClass('for-chrome-bug');
42				o.adjustPosition();
43			});
44		setTimeout(function(){
45			o.adjustPosition();
46		},0);
47	}
48	$.extend($.fitSidebar.prototype, {
49		adjustPosition : function(){
50			var o = this, c = o.config;
51			if(c._win.width() < c.responsiveWidth){
52				c.wrapper.removeClass(c.fixedClassName);
53				c.wrapper.addClass(c.noFixedClassName);
54				c.target.removeClass(s.id + '-fixed');
55				c.blank.hide();
56				c.target.width('auto');
57				c.direction = null;
58				return;
59			}
60			c.wrapper.addClass(c.fixedClassName);
61			c.wrapper.removeClass(c.noFixedClassName);
62			c.target.addClass(s.id + '-fixed');
63			var offset = c.blank.show().offset();
64			var scrollTop = c._win.scrollTop()
65			var outerHeight = c.target.outerHeight();
66			var overHeight = outerHeight - c._win.height();
67			if(overHeight < 0) overHeight = 0;
68			if(!c.direction){
69				c.lastFixedTop = c.lastDownFixedTop = c.lastUpFixedTop = offset.top - scrollTop;
70				c.lastScrollTop = c.lastDownScrollTop = c.lastUpScrollTop = scrollTop;
71			}
72			c.target.width(c.blank.width());
73			c.blank.height(c.target.height());
74			c.direction = scrollTop < c.lastScrollTop ? 'up' : 'down';
75			var adjustDown = function(){
76				var top = c.lastUpFixedTop + (c.lastUpScrollTop - scrollTop)
77				if(top < 0){
78					if(top + overHeight < 0){
79						top = -overHeight;
80						var limit = c.wrapper.offset().top + c.wrapper.height();
81						var pos = scrollTop + outerHeight + top;
82						if(pos > limit){
83							top = (limit - scrollTop) - outerHeight;
84						}
85					}
86				}
87				c.target.css({
88					top : top,
89					bottom : 'auto'
90				});
91				c.lastDownFixedTop = top;
92				c.lastDownScrollTop = scrollTop;
93			}
94			var adjustUp = function(){
95				var top = c.lastDownFixedTop + (c.lastDownScrollTop - scrollTop)
96				if(top > 0){
97					top = offset.top-scrollTop;
98					if(top < 0) top = 0;
99				}
100				c.target.css({
101					top : top,
102					bottom : 'auto'
103				});
104				c.lastUpFixedTop = top;
105				c.lastUpScrollTop = scrollTop;
106			}
107			if(c.direction == 'down'){
108				adjustDown();
109			}
110			else{
111				adjustUp();
112			}
113			c.lastFixedTop = top;
114			c.lastScrollTop = scrollTop;
115		}
116	});
117	$.fn.fitSidebar = function(option){
118		return this.each(function(){
119			var el = $(this);
120			el.data(s.id, new $.fitSidebar(el, option));
121		});
122	}
123	$.extend(s, {
124		defaults : {
125			wrapper : 'body',	// 各カラムを包括する親又は先祖要素
126			responsiveWidth : 0,	// レスポンシブのブレークポイント
127			fixedClassName : 'fit-sidebar-fixed-now',	// 固定時に wrapperパラメータ指定要素に割り当てられるクラス名
128			noFixedClassName : 'fit-sidebar-no-fixed-now'	// 非固定時に wrapperパラメータ指定要素に割り当てられるクラス名
129		},
130		id : 'fit-sidebar'
131	});
132})(jQuery);