1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/**
* @depends jquery
* @name jquery.scrollto
* @package jquery-scrollto {@link http://balupton.com/projects/jquery-scrollto}
*/
/**
* jQuery Aliaser
*/
(function(window,undefined){
// Prepare
var jQuery, $, ScrollTo;
jQuery = $ = window.jQuery;
/**
* jQuery ScrollTo (balupton edition)
* @version 1.2.0
* @date July 9, 2012
* @since 0.1.0, August 27, 2010
* @package jquery-scrollto {@link http://balupton.com/projects/jquery-scrollto}
* @author Benjamin "balupton" Lupton {@link http://balupton.com}
* @copyright (c) 2010 Benjamin Arthur Lupton {@link http://balupton.com}
* @license MIT License {@link http://creativecommons.org/licenses/MIT/}
*/
ScrollTo = $.ScrollTo = $.ScrollTo || {
/**
* The Default Configuration
*/
config: {
duration: 400,
easing: 'swing',
callback: undefined,
durationMode: 'each',
offsetTop: 0,
offsetLeft: 0
},
/**
* Configure ScrollTo
*/
configure: function(options){
// Apply Options to Config
$.extend(ScrollTo.config, options||{});
// Chain
return this;
},
/**
* Perform the Scroll Animation for the Collections
* We use $inline here, so we can determine the actual offset start for each overflow:scroll item
* Each collection is for each overflow:scroll item
*/
scroll: function(collections, config){
// Prepare
var collection, $container, container, $target, $inline, position,
containerScrollTop, containerScrollLeft,
containerScrollTopEnd, containerScrollLeftEnd,
startOffsetTop, targetOffsetTop, targetOffsetTopAdjusted,
startOffsetLeft, targetOffsetLeft, targetOffsetLeftAdjusted,
scrollOptions,
callback;
// Determine the Scroll
collection = collections.pop();
$container = collection.$container;
container = $container.get(0);
$target = collection.$target;
// Prepare the Inline Element of the Container
$inline = $('<span/>').css({
'position': 'absolute',
'top': '0px',
'left': '0px'
});
position = $container.css('position');
// Insert the Inline Element of the Container
$container.css('position','relative');
$inline.appendTo($container);
// Determine the top offset
startOffsetTop = $inline.offset().top;
targetOffsetTop = $target.offset().top;
targetOffsetTopAdjusted = targetOffsetTop - startOffsetTop - parseInt(config.offsetTop,10);
// Determine the left offset
startOffsetLeft = $inline.offset().left;
targetOffsetLeft = $target.offset().left;
targetOffsetLeftAdjusted = targetOffsetLeft - startOffsetLeft - parseInt(config.offsetLeft,10);
// Determine current scroll positions
containerScrollTop = container.scrollTop;
containerScrollLeft = container.scrollLeft;
// Reset the Inline Element of the Container
$inline.remove();
$container.css('position',position);
// Prepare the scroll options
scrollOptions = {};
// Prepare the callback
callback = function(event){
// Check
if ( collections.length === 0 ) {
// Callback
if ( typeof config.callback === 'function' ) {
config.callback.apply(this,[event]);
}
}
else {
// Recurse
ScrollTo.scroll(collections,config);
}
// Return true
return true;
};
// Handle if we only want to scroll if we are outside the viewport
if ( config.onlyIfOutside ) {
// Determine current scroll positions
containerScrollTopEnd = containerScrollTop + $container.height();
containerScrollLeftEnd = containerScrollLeft + $container.width();
// Check if we are in the range of the visible area of the container
if ( containerScrollTop < targetOffsetTopAdjusted && targetOffsetTopAdjusted < containerScrollTopEnd ) {
targetOffsetTopAdjusted = containerScrollTop;
}
if ( containerScrollLeft < targetOffsetLeftAdjusted && targetOffsetLeftAdjusted < containerScrollLeftEnd ) {
targetOffsetLeftAdjusted = containerScrollLeft;
}
}
// Determine the scroll options
if ( targetOffsetTopAdjusted !== containerScrollTop ) {
scrollOptions.scrollTop = targetOffsetTopAdjusted;
}
if ( targetOffsetLeftAdjusted !== containerScrollLeft ) {
scrollOptions.scrollLeft = targetOffsetLeftAdjusted;
}
// Perform the scroll
if ( $.browser.safari && container === document.body ) {
window.scrollTo(scrollOptions.scrollLeft, scrollOptions.scrollTop);
callback();
}
else if ( scrollOptions.scrollTop || scrollOptions.scrollLeft ) {
$container.animate(scrollOptions, config.duration, config.easing, callback);
}
else {
callback();
}
// Return true
return true;
},
/**
* ScrollTo the Element using the Options
*/
fn: function(options){
// Prepare
var collections, config, $container, container;
collections = [];
// Prepare
var $target = $(this);
if ( $target.length === 0 ) {
// Chain
return this;
}
// Handle Options
config = $.extend({},ScrollTo.config,options);
// Fetch
$container = $target.parent();
container = $container.get(0);
// Cycle through the containers
while ( ($container.length === 1) && (container !== document.body) && (container !== document) ) {
// Check Container for scroll differences
var scrollTop, scrollLeft;
scrollTop = $container.css('overflow-y') !== 'visible' && container.scrollHeight !== container.clientHeight;
scrollLeft = $container.css('overflow-x') !== 'visible' && container.scrollWidth !== container.clientWidth;
if ( scrollTop || scrollLeft ) {
// Push the Collection
collections.push({
'$container': $container,
'$target': $target
});
// Update the Target
$target = $container;
}
// Update the Container
$container = $container.parent();
container = $container.get(0);
}
// Add the final collection
collections.push({
'$container': $(
($.browser.msie || $.browser.mozilla) ? 'html' : 'body'
),
'$target': $target
});
// Adjust the Config
if ( config.durationMode === 'all' ) {
config.duration /= collections.length;
}
// Handle
ScrollTo.scroll(collections,config);
// Chain
return this;
}
};
// Apply our jQuery Prototype Function
$.fn.ScrollTo = $.ScrollTo.fn;
})(window);
|
