vendor-all-the-javascripts/vendor/assets/javascripts/jquery.jscroll.js

80 lines
3.8 KiB
JavaScript

// ####################################################################################
// ####### #######
// ####### Plugin: jScroll #######
// ####### Author: William Duffy #######
// ####### Website: http://www.wduffy.co.uk/jScroll #######
// ####### Version: 1.1 #######
// ####### #######
// ####### Copyright (c) 2011, William Duffy - www.wduffy.co.uk #######
// ####### #######
// ####### Permission is hereby granted, free of charge, to any person #######
// ####### obtaining a copy of this software and associated documentation #######
// ####### files (the "Software"), to deal in the Software without #######
// ####### restriction, including without limitation the rights to use, #######
// ####### copy, modify, merge, publish, distribute, sublicense, and/or sell #######
// ####### copies of the Software, and to permit persons to whom the #######
// ####### Software is furnished to do so, subject to the following #######
// ####### conditions: #######
// ####### #######
// ####### The above copyright notice and this permission notice shall be #######
// ####### included in all copies or substantial portions of the Software. #######
// ####### #######
// ####### THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, #######
// ####### EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES #######
// ####### OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND #######
// ####### NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT #######
// ####### HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, #######
// ####### WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING #######
// ####### FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR #######
// ####### OTHER DEALINGS IN THE SOFTWARE. #######
// ####### #######
// ####################################################################################
(function($) {
// Public: jScroll Plugin
$.fn.jScroll = function(options) {
var opts = $.extend({}, $.fn.jScroll.defaults, options);
return this.each(function() {
var $element = $(this);
var $window = $(window);
var locator = new location($element);
$window.scroll(function() {
$element
.stop()
.animate(locator.getMargin($window), opts.speed);
});
});
// Private
function location($element)
{
this.min = $element.offset().top;
this.originalMargin = parseInt($element.css("margin-top"), 10) || 0;
this.getMargin = function ($window)
{
var max = $element.parent().height() - $element.outerHeight();
var margin = this.originalMargin;
if ($window.scrollTop() >= this.min)
margin = margin + opts.top + $window.scrollTop() - this.min;
if (margin > max)
margin = max;
return ({"marginTop" : margin + 'px'});
}
}
};
// Public: Default values
$.fn.jScroll.defaults = {
speed : "slow",
top : 10
};
})(jQuery);