/*
 * jQuery autoscroll plugin
 *
 * Copyright 2008 Wilker Lucio <wilkerlucio@gmail.com>
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */
var AUTOSCROLL_BOTH,AUTOSCROLL_X,AUTOSCROLL_Y;AUTOSCROLL_X=1;AUTOSCROLL_Y=2;AUTOSCROLL_BOTH=3;(function($){$.autoscroll={};$.autoscroll.Easemove=function Easemove(){this.current_point=0;this.end_point=0;this.running=false;this.speed=0.07;this.onmove=function onmove(){};return this};$.autoscroll.Easemove.prototype.set_end_point=function set_end_point(point){this.end_point=point;if(this.running){return null}this.running=true;return this.move()};$.autoscroll.Easemove.prototype.move=function move(){var distance,move;distance=this.end_point-this.current_point;move=distance*this.speed;this.current_point+=move;this.onmove(this.current_point);if(Math.round(this.current_point)!==this.end_point){return setTimeout(((function(func,obj,args){return function(){return func.apply(obj,args.concat(Array.prototype.slice.call(arguments,0)))}}(this.move,this,[]))),20)}else{this.running=false;return this.running}};$.autoscroll.zip=function zip(callback){var _a,_b,_c,_d,_e,_f,i,items,line,results,x;items=Array.prototype.slice.call(arguments,1,arguments.length-0);results=[];_b=0;_c=items[0].length;for(_a=0,i=_b;(_b<=_c?i<_c:i>_c);(_b<=_c?i+=1:i-=1),_a++){line=[];_e=0;_f=items.length;for(_d=0,x=_e;(_e<=_f?x<_f:x>_f);(_e<=_f?x+=1:x-=1),_d++){line.push(items[x][i])}results.push(callback.apply(this,line))}return results};$.fn.autoscroll=function autoscroll(mode,degree_window,speed){var directions;mode=mode||AUTOSCROLL_BOTH;degree_window=degree_window||[20,20];speed=speed||0.07;directions=['left','top'];return this.each(function(){var ava_size,container,easemove,inner_container,offset,position,real_size;container=$(this);inner_container=container.children(":first");ava_size=[container.width(),container.height()];position=inner_container.css('position');inner_container.css('position','absolute');real_size=[inner_container.width(),inner_container.height()];inner_container.css('position',position);offset=container.offset();offset=[offset.left,offset.top];easemove=[];jQuery.each(directions,function(i,v){var obj;obj=new jQuery.autoscroll.Easemove();obj.speed=speed;obj.onmove=function onmove(position){return inner_container.css('margin-'+v,-position)};return easemove.push(obj)});return container.mousemove(function(event){var mouse;mouse=[event.pageX,event.pageY];return jQuery.autoscroll.zip((function(m,o,a,r,e,w,t){var d,f,real;if(!(t&mode)){return null}d=m-o;d=Math.min(Math.max(d-w,0),a-w*2);f=d/(a-w*2);real=f*(r-a);return e.set_end_point(real)}),mouse,offset,ava_size,real_size,easemove,degree_window,[AUTOSCROLL_X,AUTOSCROLL_Y])})})};return $.fn.autoscroll})(jQuery);