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Copy pathsite.js
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95 lines (79 loc) · 2.94 KB
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$.extend($.easing,
{
def: 'easeOutQuad',
easeInOutExpo: function (x, t, b, c, d) {
if (t==0) return b;
if (t==d) return b+c;
if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
}
});
(function( $ ) {
var settings;
var disableScrollFn = false;
var navItems;
var navs = {}, sections = {};
$.fn.navScroller = function(options) {
settings = $.extend({
scrollToOffset: 170,
scrollSpeed: 800,
activateParentNode: true,
}, options );
navItems = this;
//attatch click listeners
navItems.on('click', function(event){
event.preventDefault();
var navID = $(this).attr("href").substring(1);
disableScrollFn = true;
activateNav(navID);
populateDestinations(); //recalculate these!
$('html,body').animate({scrollTop: sections[navID] - settings.scrollToOffset},
settings.scrollSpeed, "easeInOutExpo", function(){
disableScrollFn = false;
}
);
});
//populate lookup of clicable elements and destination sections
populateDestinations(); //should also be run on browser resize, btw
// setup scroll listener
$(document).scroll(function(){
if (disableScrollFn) { return; }
var page_height = $(window).height();
var pos = $(this).scrollTop();
for (i in sections) {
if ((pos + settings.scrollToOffset >= sections[i]) && sections[i] < pos + page_height){
activateNav(i);
}
}
});
};
function populateDestinations() {
navItems.each(function(){
var scrollID = $(this).attr('href').substring(1);
navs[scrollID] = (settings.activateParentNode)? this.parentNode : this;
sections[scrollID] = $(document.getElementById(scrollID)).offset().top;
});
}
function activateNav(navID) {
for (nav in navs) { $(navs[nav]).removeClass('active'); }
$(navs[navID]).addClass('active');
}
})( jQuery );
$(document).ready(function (){
$('nav li a').navScroller();
//section divider icon click gently scrolls to reveal the section
$(".sectiondivider").on('click', function(event) {
$('html,body').animate({scrollTop: $(event.target.parentNode).offset().top - 50}, 400, "linear");
});
//links going to other sections nicely scroll
$(".container a").each(function(){
if ($(this).attr("href").charAt(0) == '#'){
$(this).on('click', function(event) {
event.preventDefault();
var target = $(event.target).closest("a");
var targetHight = $(target.attr("href")).offset().top
$('html,body').animate({scrollTop: targetHight - 170}, 800, "easeInOutExpo");
});
}
});
});