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jquery.nicescroll.js
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/* jquery.nicescroll
-- version 2.3.0
-- copyright 2011 InuYaksa*2011
-- licensed under the MIT
--
-- http://areaaperta.com/nicescroll
-- https://github.com/inuyaksa/jquery.nicescroll
--
*/
(function($){
// globals
var domfocus = false;
var mousefocus = false;
var zoomactive = false;
// http://stackoverflow.com/questions/2161159/get-script-path
function getScriptPath() {
var scripts= document.getElementsByTagName('script');
var path= scripts[scripts.length-1].src.split('?')[0];
return (path.split('/').length>0) ? path.split('/').slice(0,-1).join('/')+'/' : '';
}
var scriptpath = getScriptPath();
var NiceScrollClass = function(myopt) {
var self = this;
this.version = '2.3.0';
this.name = 'nicescroll';
this.opt = {
doc:$("body"),
win:false,
zindex:9000,
cursoropacitymin:0,
cursoropacitymax:1,
cursorcolor:"#424242",
cursorwidth:"5px",
cursorborder:"1px solid #fff",
cursorborderradius:"5px",
scrollspeed:60,
mousescrollstep:8*6,
touchbehavior:false,
hwacceleration:true,
usetransition:true,
boxzoom:false,
dblclickzoom:true,
gesturezoom:true,
grabcursorenabled:true,
autohidemode:true,
background:"",
iframeautoresize:true
};
if (myopt||false) {
for(var a in self.opt) {
if (myopt[a]!==undefined) self.opt[a] = myopt[a];
}
}
this.id = self.opt.doc[0].id||'';
this.doc = self.opt.doc;
this.ispage = (self.doc[0].nodeName=='BODY'||self.doc[0].nodeName=='HTML');
this.haswrapper = (self.opt.win!==false);
this.win = self.opt.win||(this.ispage?$(window):this.doc);
this.docscroll = this.ispage?$(window):this.win;
this.iframe = false;
this.isiframe = ((this.doc[0].nodeName == 'IFRAME') && (this.win[0].nodeName == 'IFRAME'));
this.istextarea = (this.win[0].nodeName == 'TEXTAREA');
// Events jump table
this.onmousedown = false;
this.onmouseup = false;
this.onmousemove = false;
this.onmousewheel = false;
this.onkeypress = false;
// Let's start!
this.view = false;
this.page = false;
this.scroll = {x:0,y:0};
this.scrollratio = {x:0,y:0};
this.cursorheight = 20;
this.scrollvaluemax = 0;
do {
this.id = "ascrail"+Math.round(Math.random() * 99999);
} while (document.getElementById(this.id));
this.rail = false;
this.cursor = false;
this.cursorfreezed = false;
this.zoom = false;
this.zoomactive = false;
this.hasfocus = false;
this.hasmousefocus = false;
this.visibility = true;
this.locked = false;
var domtest = document.createElement('DIV');
this.isopera = ("opera" in window);
this.isie = (("all" in document) && ("attachEvent" in domtest) && !this.isopera);
this.isieold = (this.isie && !("msInterpolationMode" in domtest.style)); // IE6 and older
this.isie7 = this.isie&&!this.isieold&&(!("documentMode" in document)||(document.documentMode==7));
this.isie8 = this.isie&&("documentMode" in document)&&(document.documentMode==8);
this.isie9 = this.isie&&("performance" in window)&&(document.documentMode>=9);
this.ismozilla = ("MozAppearance" in domtest.style);
this.cantouch = ("ontouchstart" in document.documentElement);
if (this.cantouch && /iphone|ipad|ipod/i.test(navigator.platform)) {
this.isios = true;
this.isios4 = !("seal" in Object);
} else {
this.isios = false;
this.isios4 = false;
}
if (self.opt.hwacceleration) { // if you dont need dont bother to look for
this.trstyle = (window.opera) ? 'OTransform' : (document.all) ? 'msTransform' : (domtest.style.webkitTransform!==undefined) ? 'webkitTransform' : (domtest.style.MozTransform!==undefined) ? 'MozTransform' : false;
if (this.trstyle && domtest.style[this.trstyle] === undefined) this.trstyle = false;
this.hastransform = (this.trstyle != false);
if (this.hastransform) {
domtest.style[this.trstyle] = "translate3d(1px,2px,3px)";
this.hastranslate3d = /translate3d/.test(domtest.style[this.trstyle]);
}
this.transitionstyle = false;
this.prefixstyle = '';
this.transitionend = false;
var check = ['transition','webkitTransition','MozTransition','OTransition','msTransition','KhtmlTransition'];
var prefix = ['','-webkit-','-moz-','-o-','-ms-','-khtml-'];
var evs = ['transitionEnd','webkitTransitionEnd','transitionend','oTransitionEnd','msTransitionEnd','KhtmlTransitionEnd'];
for(var a=0;a<check.length;a++) {
if (check[a] in domtest.style) {
this.transitionstyle = check[a];
this.prefixstyle = prefix[a];
this.transitionend = evs[a];
break;
}
}
this.hastransition = (this.transitionstyle);
} else {
this.trstyle = false;
this.hastransform = false;
this.hastranslate3d = false;
this.transitionstyle = false;
this.hastransition = false;
this.transitionend = false;
}
this.cursorgrabvalue = '';
if (self.opt.grabcursorenabled&&self.opt.touchbehavior) { // check grab cursor support
function detectCursorGrab() {
if (!self.isie||self.isie9) { // some old IE return false positive
var lst = ['grab','-moz-grab','-webkit-grab'];
for(var a=0;a<lst.length;a++) {
var p = lst[a];
domtest.style['cursor']=p;
if (domtest.style['cursor']==p) return p;
}
}
return 'url(http://www.google.com/intl/en_ALL/mapfiles/openhand.cur),n-resize';
}
this.cursorgrabvalue = detectCursorGrab();
}
domtest = null;
this.ishwscroll = (self.hastransform)&&(self.opt.hwacceleration)&&(self.haswrapper);
this.scrollTop = function(val) {
return (val === undefined) ? self.getScrollTop() : self.setScrollTop(val);
};
if (this.ishwscroll) {
// hw accelerated scroll
self.doc.translate = {x:0,y:0};
this.getScrollTop = function() {
return self.doc.translate.y;
};
if (this.hastranslate3d) {
this.setScrollTop = function(val,silent) {
self.doc.css(self.trstyle,"translate3d(0px,"+(val*-1)+"px,0px)");
self.doc.translate.y = val;
if (!silent) {
if (document.createEvent) {
var e = document.createEvent("UIEvents");
e.initUIEvent("scroll", false, true, window, 1);
self.docscroll[0].dispatchEvent(e);
} else {
var e = document.createEventObject();
self.docscroll[0].fireEvent("onscroll");
e.cancelBubble = true;
}
}
};
} else {
this.setScrollTop = function(val,silent) {
self.doc.css(self.trstyle,"translate(0px,"+(val*-1)+"px)");
self.doc.translate.y = val;
if (!silent) {
if (document.createEvent) {
var e = document.createEvent("UIEvents");
e.initUIEvent("scroll", false, true, window, 1);
self.docscroll[0].dispatchEvent(e);
} else {
var e = document.createEventObject();
self.docscroll[0].fireEvent("onscroll");
e.cancelBubble = true;
}
}
};
}
} else {
// native scroll
this.getScrollTop = function() {
return self.docscroll.scrollTop();
};
this.setScrollTop = function(val) {
return self.docscroll.scrollTop(val);
};
}
this.getTarget = function(e) {
if (!e) return false;
if (e.target) return e.target;
if (e.srcElement) return e.srcElement;
return false;
};
this.hasParent = function(e,id) {
if (!e) return false;
var el = e.target||e.srcElement||e||false;
while (el && el.id != id) {
el = el.parentNode||false;
}
return (el!==false);
};
this.updateScrollBar = function(len) {
if (self.ishwscroll) {
self.rail.css({height:self.win.innerHeight()});
} else {
var pos = self.win.offset();
pos.top+=2;
var brd = (self.win.outerWidth() - self.win.innerWidth())/2;
pos.left+= self.win.innerWidth() + brd - self.rail.width - 1;
self.rail.css({position:"absolute",top:pos.top,left:pos.left,height:(len)?len.h:self.win.innerHeight()});
if (self.zoom) self.zoom.css({position:"absolute",top:pos.top+1,left:pos.left-18});
}
};
// derived by http://blog.joelambert.co.uk/2011/06/01/a-better-settimeoutsetinterval/
var setAnimationFrame = (function(){
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
false;
})();
var clearAnimationFrame = (function(){
return window.cancelRequestAnimationFrame ||
window.webkitCancelRequestAnimationFrame ||
window.mozCancelRequestAnimationFrame ||
window.oCancelRequestAnimationFrame ||
window.msCancelRequestAnimationFrame ||
false;
})();
self.hasanimationframe = (setAnimationFrame);
self.hascancelanimationframe = (clearAnimationFrame);
if (!self.hasanimationframe) setAnimationFrame=function(fn){return setTimeout(fn,1000/60)};
if (!self.hascancelanimationframe) clearAnimationFrame=clearInterval;
this.init = function() {
if (!self.ispage || (!self.cantouch && !self.isieold)) {
(self.ispage)?self.doc.css({'overflow-y':'hidden'}):self.docscroll.css({'overflow-y':'hidden'});
if (self.ispage&&self.isie7) $("html").css({'overflow-y':'hidden'}); //IE7 double scrollbar issue
var cursor = $(document.createElement('div'));
cursor.css({
position:"relative",top:0,"float":"right",width:self.opt.cursorwidth,height:"0px",
'background-color':self.opt.cursorcolor,
border:self.opt.cursorborder,
'background-clip':'padding-box',
'-webkit-border-radius':self.opt.cursorborderradius,
'-moz-border-radius':self.opt.cursorborderradius,
'border-radius':self.opt.cursorborderradius
});
cursor.hborder = parseFloat(cursor.outerHeight() - cursor.innerHeight());
self.cursor = cursor;
var rail = $(document.createElement('div'));
rail.attr('id',self.id);
rail.width = 3+Math.max(parseFloat(self.opt.cursorwidth),cursor.outerWidth());
rail.css({"padding-left":"0px","padding-right":"1px",width:rail.width+"px",'zIndex':(self.ispage)?self.opt.zindex:self.opt.zindex+2,"background":self.opt.background});
rail.append(cursor);
self.rail = rail;
var zoom = false;
if (self.opt.boxzoom&&!self.ispage&&!self.isieold) {
zoom = document.createElement('div');
self.bind(zoom,"click",self.doZoom);
self.zoom = $(zoom);
self.zoom.css({"cursor":"pointer",'z-index':self.opt.zindex,'backgroundImage':'url('+scriptpath+'zoomico.png)','height':18,'width':18,'backgroundPosition':'0px 0px'});
if (self.opt.dblclickzoom) self.bind(self.win,"dblclick",self.doZoom);
if (self.cantouch&&self.opt.gesturezoom) {
self.bind(self.win,"gestureend",function(e) {
if (e.scale>1.5) self.doZoomIn(e);
if (e.scale<0.8) self.doZoomOut(e);
return self.cancelEvent(e);
});
}
}
if (self.ispage) {
rail.css({position:"fixed",top:"0px",right:"0px",height:"100%"});
self.doc.append(rail);
} else {
if (self.ishwscroll) {
if (self.win.css('position')=='static') self.win.css('position','relative');
if (self.zoom) {
self.zoom.css({position:"absolute",top:1,right:0,"margin-right":rail.width+2});
self.win.append(self.zoom);
}
rail.css({position:"absolute",top:0,right:0});
self.win.append(rail);
} else {
self.updateScrollBar();
$("body").append(rail);
if (self.zoom) $("body").append(self.zoom);
}
}
if (self.opt.autohidemode===false) {
self.autohidedom = false;
}
else if (self.opt.autohidemode===true) {
self.autohidedom = self.rail;
}
else if (self.opt.autohidemode=="cursor") {
self.autohidedom = self.cursor;
}
self.bind(window,'resize',self.onResize);
self.bind(window,'orientationchange',self.onResize);
if (!self.ispage&&!self.haswrapper) {
self.bind(self.win,(self.isie&&!self.isie9)?"propertychange":"DOMAttrModified",self.onAttributeChange);
}
if (!self.ispage&&self.opt.boxzoom) $(window).resize(self.resizeZoom);
if (self.istextarea) self.win.mouseup(self.onResize);
self.onResize();
if (self.cantouch||self.opt.touchbehavior) {
self.onmousedown = function(e) {
if (self.locked) return self.cancelEvent(e);
self.rail.drag = {x:e.pageX,y:e.pageY,sx:self.scroll.x,sy:self.scroll.y,st:self.getScrollTop(),lx:e.pageX,ly:e.pageY,nx:e.pageX,ny:e.pageY,tt:(new Date()).getTime(),lt:(new Date()).getTime()};
return self.cancelEvent(e);
};
self.onmouseup = function(e) {
if (self.rail.drag) {
self.doScrollMomentum(self.rail.drag);
self.rail.drag = false;
return self.cancelEvent(e);
}
};
self.onmousemove = function(e) {
if (self.rail.drag) {
var my = (e.pageY-self.rail.drag.y);
self.rail.drag.ly = self.rail.drag.ny;
self.rail.drag.ny = e.pageY;
self.rail.drag.lt = (new Date()).getTime();
self.scroll.y = Math.round((self.rail.drag.st-my) * (1/self.scrollratio.y));
if (self.scroll.y<0) self.scroll.y=0;
if (self.scroll.y>self.scrollvaluemax) self.scroll.y=self.scrollvaluemax;
self.showCursor();
self.doScrollTo(self.rail.drag.st-my,true);
return self.cancelEvent(e);
}
};
if (self.cursorgrabvalue) self.win.css({'cursor':self.cursorgrabvalue});
} else {
self.onmousedown = function(e) {
if (self.locked) return self.cancelEvent(e);
self.rail.drag = {x:e.screenX,y:e.screenY,sx:self.scroll.x,sy:self.scroll.y};
return self.cancelEvent(e);
};
self.onmouseup = function(e) {
if (self.rail.drag) {
self.rail.drag = false;
return self.cancelEvent(e);
}
};
self.onmousemove = function(e) {
if (self.rail.drag) {
self.scroll.y = self.rail.drag.sy + (e.screenY-self.rail.drag.y);
if (self.scroll.y<0) self.scroll.y=0;
var my = self.scrollvaluemax;
if (self.scroll.y>my) self.scroll.y=my;
self.showCursor();
self.cursorfreezed = true;
self.doScroll(Math.round(self.scroll.y*self.scrollratio.y));
return self.cancelEvent(e);
}
};
}
if (self.cantouch||self.opt.touchbehavior) self.bind(self.win,"mousedown",self.onmousedown);
self.bind(self.win,"mouseup",self.onmouseup);
self.bind(self.rail,"mousedown",self.onmousedown);
self.bind(self.rail,"mouseup",function(e) {
self.rail.drag = false;
self.hideCursor();
return self.cancelEvent(e);
});
self.bind(document,"mouseup",self.onmouseup);
self.bind(document,"mousemove",self.onmousemove);
if (!self.cantouch) {
self.rail.mouseenter(function() {
self.showCursor();
self.rail.active = true;
});
self.rail.mouseleave(function() {
self.rail.active = false;
if (!self.rail.drag) self.hideCursor();
});
if (!self.isiframe) self.bind((self.isie&&self.ispage) ? document : self.docscroll,"mousewheel",self.onmousewheel);
self.bind(self.rail,"mousewheel",self.onmousewheel);
}
if (!self.ispage&&!self.cantouch) {
if (!self.win.attr("tabindex")) self.win.attr({"tabindex":(new Date()).getTime()});
self.win.focus(function(e) {
domfocus = (self.getTarget(e)).id||true;
self.hasfocus = true;
self.noticeCursor();
});
self.win.blur(function(e) {
domfocus = false;
self.hasfocus = false;
});
self.win.mouseenter(function(e) {
mousefocus = (self.getTarget(e)).id||true;
self.hasmousefocus = true;
self.noticeCursor();
});
self.win.mouseleave(function() {
mousefocus = false;
self.hasmousefocus = false;
});
};
//Thanks to http://www.quirksmode.org !!
self.onkeypress = function(e) {
e = (e) ? e : window.e;
var tg = self.getTarget(e);
if (tg&&/INPUT|TEXTAREA|SELECT/.test(tg.nodeName)) {
var tp = tg.getAttribute('type')||tg.type||false;
if ((!tp)||!(/submit|button|cancel/i.tp)) return true;
}
if (self.hasfocus||(self.hasmousefocus&&!domfocus)||(self.ispage&&!domfocus&&!mousefocus)) {
var key = e.keyCode;
if (self.locked&&key!=27) return self.cancelEvent(e);
var ret = true;
switch (key) {
case 38:
case 63233: //safari
self.doScrollBy(24*3,true);
ret = false;
break;
case 40:
case 63235: //safari
self.doScrollBy(-24*3,true);
ret = false;
break;
case 33:
case 63276: // safari
self.doScrollBy(self.view.h,true);
ret = false;
break;
case 34:
case 63277: // safari
self.doScrollBy(-self.view.h,true);
ret = false;
break;
case 36:
case 63273: // safari
self.doScrollTo(0,true);
ret = false;
break;
case 35:
case 63275: // safari
self.doScrollTo(self.page.h,true);
ret = false;
break;
case 27: // ESC
if (self.zoomactive) {
self.doZoom();
ret = false;
}
break;
}
if (!ret) return self.cancelEvent(e);
}
};
self.bind(document,(self.isopera)?"keypress":"keydown",self.onkeypress);
}
if (this.doc[0].nodeName == 'IFRAME') {
function oniframeload(e) {
var doc = 'contentDocument' in this ? this.contentDocument : this.contentWindow.document;
if (self.isiframe) {
self.docscroll = $(doc);
self.iframe = {
html:self.doc.contents().find('html')[0],
body:self.doc.contents().find('body')[0]
};
}
if (self.opt.iframeautoresize&&!self.isiframe) {
self.win.scrollTop(0); // reset position
self.doc.height(""); //reset height to fix browser bug
var cc=self.doc.contents();
var hh=Math.max(cc.find('html').attr('scrollHeight'),cc.find('body').attr('scrollHeight'));
self.doc.height(hh);
}
self.onResize();
if (self.isie7) $(doc).find('html').css({'overflow-y':'hidden'});
$(doc.body).css({'overflow-y':'hidden'});
if ('contentWindow' in this) {
self.bind(this.contentWindow,"scroll",self.onscroll); //IE8 & minor
} else {
self.bind(doc,"scroll",self.onscroll);
}
self.bind(doc,"mouseup",self.onmouseup);
self.bind(doc,"mousewheel",self.onmousewheel);
self.bind(doc,(self.isopera)?"keypress":"keydown",self.onkeypress);
if (self.cantouch||self.opt.touchbehavior) {
self.bind(doc,"mousedown",self.onmousedown);
if (self.cursorgrabvalue) $(doc).css({'cursor':self.cursorgrabvalue});
}
self.bind(doc,"mousemove",self.onmousemove);
if (self.zoom) {
if (self.opt.dblclickzoom) self.bind(doc,'dblclick',self.doZoom);
if (self.cantouch&&self.opt.gesturezoom) {
self.bind(doc,"gesturechange",function(e) {
if (e.scale>1.5) self.doZoomIn(e);
if (e.scale<0.8) self.doZoomOut(e);
return self.cancelEvent(e);
});
}
}
};
if (this.doc[0].readyState&&this.doc[0].readyState=="complete"){
setTimeout(function(){oniframeload.call(self.doc[0],false)},500);
}
this.doc.load(oniframeload);
}
};
this.showCursor = function() {
if (self.cursortimeout) {
clearTimeout(self.cursortimeout);
self.cursortimeout = 0;
}
if (!self.rail) return;
if (self.autohidedom) self.autohidedom.stop().css({opacity:self.opt.cursoropacitymax});
self.cursor.css({height:self.cursorheight,top:self.scroll.y});
if (self.zoom) self.zoom.stop().css({opacity:self.opt.cursoropacitymax});
};
this.hideCursor = function(tm) {
if (self.cursortimeout) return;
if (!self.rail) return;
if (!self.autohidedom) return;
self.cursortimeout = setTimeout(function() {
if (!self.rail.active) {
self.autohidedom.stop().animate({opacity:self.opt.cursoropacitymin});
if (self.zoom) self.zoom.stop().animate({opacity:self.opt.cursoropacitymin});
}
self.cursortimeout = 0;
},tm||800);
};
this.noticeCursor = function(tm) {
self.showCursor();
self.hideCursor(tm);
};
this.getContentSize = function() {
var pg =
(self.ispage) ?
{
w:Math.max(document.body.scrollWidth,document.documentElement.scrollWidth),
h:Math.max(document.body.scrollHeight,document.documentElement.scrollHeight)
}
: (self.haswrapper) ?
{
w:self.doc.outerWidth()+parseInt(self.win.css('paddingLeft'))+parseInt(self.win.css('paddingRight')),
h:self.doc.outerHeight()+parseInt(self.win.css('paddingTop'))+parseInt(self.win.css('paddingBottom'))
}
: (self.iframe) ?
{
w:Math.max(self.iframe.html.scrollWidth,self.iframe.body.scrollWidth),
h:Math.max(self.iframe.html.scrollHeight,self.iframe.body.scrollHeight)
}
:
{
w:self.docscroll[0].scrollWidth,
h:self.docscroll[0].scrollHeight
};
pg.w-=1;
pg.h-=1;
return pg;
};
this.onAttributeChange = function(e) {
if (e&&e.target) {
if ((e.target !== self.win[0])&&(e.target!==self.doc[0])) return true;
var attr = ("attrChange" in e)?e.attrName:("propertyName" in e)?e.propertyName:false;
if (attr&&/width|height|style|block/i.test(attr)) {
if (self.lastattributechange) self.lastattributechange=clearTimeout(self.lastattributechange);
self.lastattributechange = setTimeout(function(){
self.lastattributechange = 0;
self.onResize();
},60);
}
}
};
this.onResize = function() {
if (!self.haswrapper&&!self.ispage) {
var vis = (self.win.css('display')!='none');
if (vis&&!self.visibility) self.show();
if (!vis&&self.visibility) self.hide();
if (!self.visibility) return false;
}
self.view = {
w:(self.ispage) ? self.win.width() : self.win.innerWidth(),
h:(self.ispage) ? self.win.height() : self.win.innerHeight()
};
self.page = self.getContentSize();
if (self.view.h>=self.page.h) {
self.hide();
self.scrollvaluemax = 0;
self.scroll.y = 0;
self.scrollratio = {x:0,y:0};
self.cursorheight = 0;
self.locked = true;
self.setScrollTop(0);
return false;
}
else if (!self.visibility) self.show();
self.locked = false;
if (self.istextarea&&self.win.css('resize')&&self.win.css('resize')!='none') self.view.h-=20;
if (!self.ispage) self.updateScrollBar(self.view);
self.cursorheight = Math.min(self.view.h,Math.round(self.view.h * (self.view.h / self.page.h)));
self.scrollvaluemax = self.view.h-self.cursorheight-self.cursor.hborder-2;
self.scrollratio = {
x:0,
y:((self.page.h - self.view.h)/self.scrollvaluemax)
};
self.scroll.y = Math.round(self.getScrollTop() * (1/self.scrollratio.y));
self.noticeCursor();
};
this.bind = function(dom,name,fn,bubble) { // touch-oriented & fixing jquery bind
var el = (dom.length) ? dom[0] : dom;
if (el.addEventListener) {
if (self.cantouch && /mouseup|mousedown|mousemove/.test(name)) { // touch device support
var tt = (name=='mousedown')?'touchstart':(name=='mouseup')?'touchend':'touchmove';
el.addEventListener(tt,function(e){
if(e.touches.length<2){var ev=(e.touches.length>0)?e.touches[0]:e;ev.original=e;fn.call(this,ev);}
},bubble||false);
}
el.addEventListener(name,fn,bubble||false);
if (name=='mousewheel') el.addEventListener("DOMMouseScroll",fn,bubble||false);
if (self.cantouch && name=="mouseup") el.addEventListener("touchcancel",fn,bubble||false);
}
else if (el.attachEvent) {
el.attachEvent("on"+name,function(e) {
if (e&&!("pageY" in e)&&("screenY" in e)) {
e.pageX = e.screenX;
e.pageY = e.screenY;
}
return ((fn.call(el,e)===false)||bubble===false) ? self.cancelEvent(e) : true;
});
}
else {
el["on"+name] = function(e) {
var rt=fn.call(el,e);
return (rt===false||bubble===false) ? self.cancelEvent(e) : true;
};
}
};
// Thanks to http://www.switchonthecode.com !!
this.cancelEvent = function(e) {
if (self.cantouch) {
e = e.original ? e.original : e||false;
} else {
e = e ? e : window.event||false;
}
if (!e) return false;
if(e.stopPropagation) e.stopPropagation();
if(e.preventDefault) e.preventDefault();
e.cancelBubble = true;
e.cancel = true;
e.returnValue = false;
return false;
};
this.show = function() {
self.visibility = true;
self.rail.css('display','block');
};
this.hide = function() {
self.visibility = false;
self.rail.css('display','none');
};
this.onmousewheel = function(e) {
if (self.locked) return self.cancelEvent(e);
e = e ? e : window.event;
if (self.rail.drag) return self.cancelEvent(e);
var delta = 0;
var delta = e.detail ? e.detail * -1 : e.wheelDelta / 40;
if (delta) {
self.doScrollBy(delta*self.opt.mousescrollstep,true);
}
return self.cancelEvent(e);
};
this.stop = function() {
if (self.timer) clearAnimationFrame(self.timer);
self.timer = 0;
self.cursorfreezed = false;
self.scroll.y = Math.round(self.getScrollTop() * (1/self.scrollratio.y));
self.noticeCursor();
};
if (self.ishwscroll&&self.hastransition&&self.opt.usetransition) {
this.prepareTransition = function(dif,trend) {
var sp = Math.round(self.opt.scrollspeed*10);
var ex = Math.min(sp,Math.round((dif / 20) * self.opt.scrollspeed));
var trans = (ex>20) ? self.prefixstyle+'transform '+ex+'ms ease-out 0s' : '';
if (!self.lasttransitionstyle||self.lasttransitionstyle!=trans) {
self.lasttransitionstyle = trans;
self.doc.css(self.transitionstyle,trans);
}
};
this.doScroll = function(y) {
self.newscrolly = y;
if (self.timer) return;
self.timer = setTimeout(function() {
var top = self.getScrollTop();
var dif = (top>self.newscrolly) ? top-self.newscrolly : self.newscrolly-top;
self.prepareTransition(dif)
self.setScrollTop(self.newscrolly);
self.timer = 0;
},self.opt.scrollspeed);
self.noticeCursor();
};
// self.bind(self.doc,'transitionend',function(e){console.log(e)},false); TEST!! Later or soon I use it! (I hope so)
} else {
this.doScroll = function(y) {
self.newscrolly = y;
if (self.timer) return;
var rt = 1/4; //*(60/self.opt.scrollspeed));
var sync = 0;
var lastsync = 0;
function scrolling() {
sync=(new Date()).getTime();
if (sync<lastsync) return (self.timer = setAnimationFrame(scrolling));
lastsync = (new Date()).getTime()+self.opt.scrollspeed;
sync=0;
var gp = self.newscrolly - self.getScrollTop();
var df = (gp>0) ? Math.ceil(gp*rt) : Math.floor(gp*rt);
var sc = self.getScrollTop()+df;
self.setScrollTop(sc);
if (sc == self.newscrolly) {
// clearAnimationFrame(self.timer);
self.timer = 0;
self.cursorfreezed = false;
} else {
self.timer = setAnimationFrame(scrolling);
}
};
self.timer = setAnimationFrame(scrolling);
self.noticeCursor();
};
}
this.doScrollBy = function(stp,absolute) {
if (absolute) stp = Math.round(stp * 1/self.scrollratio.y);
var ny = self.scroll.y-stp;
if (ny<0) ny=0;
var my = self.scrollvaluemax;
if (ny>my) ny=my;
self.cursorfreezed = false;
self.doScroll(Math.floor(ny*self.scrollratio.y));
};
this.doScrollTo = function(pos,absolute) {
ny=(absolute)?Math.round(pos * 1/self.scrollratio.y):pos;
if (ny<0) pos=0;
var my = self.scrollvaluemax;
if (ny>my) pos=(absolute)?Math.round(my*self.scrollratio.y):my;
self.cursorfreezed = false;
self.doScroll((absolute)?pos:Math.round(pos*self.scrollratio.y));
};
this.doScrollMomentum = function(mom) {
var dy = mom.ly-mom.ny;
var tt = ((new Date()).getTime()-mom.lt);
var my = Math.floor((dy*3)/((tt+1)*0.2));
if (my) self.doScrollBy(my,true);
};
self.onscroll = function(e) {
var tm = (new Date()).getTime();
if (!self.lastcontentcheck || self.lastcontentcheck<tm) {
self.lastcontentcheck=tm+500;
var pg = self.getContentSize();
if (pg.h!=self.page.h) self.onResize();
}
if (self.rail.drag) return;
if (!self.cursorfreezed) self.scroll.y = Math.round(self.getScrollTop() * (1/self.scrollratio.y));
self.noticeCursor();
};
self.docscroll.scroll(function(e) {
self.onscroll(e);
});
this.doZoomIn = function(e) {
if (self.zoomactive) return;
self.zoomactive = true;
self.zoomrestore = {
style:{}
};
var lst = ['position','top','left','zIndex','backgroundColor','marginTop','marginBottom','marginLeft','marginRight'];
var win = self.win[0].style;
for(var a in lst) {
var pp = lst[a];
self.zoomrestore.style[pp] = (typeof win[pp]!='undefined') ? win[pp] : '';
}
self.zoomrestore.style.width = self.win.css('width');
self.zoomrestore.style.height = self.win.css('height');
self.zoomrestore.padding = {
w:self.win.outerWidth()-self.win.width(),
h:self.win.outerHeight()-self.win.height()
};
if (self.isios4) {
self.zoomrestore.scrollTop = $(window).scrollTop();
$(window).scrollTop(0);
}
self.win.css({
"position":(self.isios4)?"absolute":"fixed",
"top":0,
"left":0,
"z-index":self.opt.zindex+100,
"margin":"0px"
});
var bkg = self.win.css("backgroundColor");
if (bkg==""||/transparent|rgba\(0, 0, 0, 0\)|rgba\(0,0,0,0\)/.test(bkg)) self.win.css("backgroundColor","#fff");
self.rail.css({"z-index":self.opt.zindex+110});
self.zoom.css({"z-index":self.opt.zindex+112});
self.zoom.css('backgroundPosition','0px -18px');
self.resizeZoom();
return self.cancelEvent(e);
};
this.doZoomOut = function(e) {
if (!self.zoomactive) return;
self.zoomactive = false;
self.win.css("margin","");
self.win.css(self.zoomrestore.style);
if (self.isios4) {
$(window).scrollTop(self.zoomrestore.scrollTop);
}
self.rail.css({"z-index":(self.ispage)?self.opt.zindex:self.opt.zindex+2});
self.zoom.css({"z-index":self.opt.zindex});
self.zoomrestore = false;
self.zoom.css('backgroundPosition','0px 0px');
self.onResize();
return self.cancelEvent(e);
};
this.doZoom = function(e) {
return (self.zoomactive) ? self.doZoomOut(e) : self.doZoomIn(e);
};
this.resizeZoom = function() {
if (!self.zoomactive) return;
var py = self.getScrollTop(); //preserve scrolling position
self.win.css({
width:$(window).width()-self.zoomrestore.padding.w+"px",
height:$(window).height()-self.zoomrestore.padding.h+"px"
});
self.setScrollTop(py);
self.onResize();
};
this.init();
};
$.fn.niceScroll = function(wrapper,opt) {
if ((typeof wrapper=="object") && (typeof opt=="undefined")) {
opt = wrapper;
wrapper = false;
}
var ret = [];
if (typeof opt=="undefined") opt = {};
if (wrapper||false) {
opt.doc = $(wrapper);
opt.win = $(this);
}
var docundef = !("doc" in opt);
this.each(function() {
var nice = $(this).data('__nicescroll')||false;
if (!nice) {
opt.doc = (docundef) ? $(this) : opt.doc;
nice = new NiceScrollClass(opt);
$(this).data('__nicescroll',nice);
}
ret.push(nice);
});
return (ret.length==1) ? ret[0] : ret;
};
// override jQuery scrollTop
var _scrollTop = jQuery.fn.scrollTop; // preserve original function