/**
 * jQuery coffee Tags
 * jQuery coffee Clouds plus v1.0
 *
 * .jQuery{ float : cloud ;}
 *
 * 网址 : http://julying.com/lab/coffee/
 * 类型： 原创脚本
 * 邮箱 : i@julying.com)
 * 发布 : 2012-07-07 22:28 
 
 * 版权所有 2012 | julying.com
 * 此插件遵循 MIT、GPL2、GNU 许可.
 * http://julying.com/code/license/
 *
 ***************************
 */
;(function($){
	$.extend( jQuery.easing ,{
		flyFastSlow: function (x, t, b, c, d) {
			return -c * ((t=t/d-1)*t*t*t  - 1) + b;
		}
	});
	
	$.fn.coffee = function(option){
		var $coffee = $(this);
		var opts = $.extend({},$.fn.coffee.defaults,option);
		var coffeeWidth = $coffee.width() + opts.coffeeHandleWidth  - 100 ;
		$coffee.append('<div class="coffee-steam-box" style="height:'+ opts.steamTopMax+'px; width:'+ (coffeeWidth) +'px; left:0px;top:50px;position:absolute;overflow:hidden;z-index:0;"></div>');
		var $coffeeSteamBox = $coffee.find('div.coffee-steam-box');
		var coffeeSteamBoxWidth = $coffeeSteamBox.width();
		
		var keyword_times = 0;
		var str_times = 0;
		var str_max_times = 0;
		var an_stop = 0 ;
		
		//最大次數
		if( opts.steams.length > opts.steamsShowMax ){
			str_max_times = opts.steamsShowMax;
		}else{
			str_max_times = opts.steams.length;
		}
		
		//字大小配對
		var max_size = opts.steamMaxSize;
		var min_size = opts.steamMinSize;
		var now_size = max_size;
		var SizeLayout = opts.steamMaxSize - opts.steamMinSize + 1 ;
		var SizeI = SizeLayout / opts.steams.length;
		var Size_Arr = new Array();
		//跳段間距
		if( SizeI < 1 ){
			/*	1/(10/20) = 20/10 
			*	max_size = 15
			*	min_size = 10
			*	opts.steams.length = 10
			*	print 15.15.14.14.13.13.12.12.11.11*/
			SizeI = Math.ceil( 1 / SizeI ); 
			for( var i = 0 ; i < opts.steams.length ; i++){
				Size_Arr[opts.steams[i]] = now_size ;
				if( i % SizeI == SizeI - 1 ){
					if( now_size - SizeI >= min_size ){//是否小於最小範圍
						now_size--;
					}
				}
			}
		}else{
			/*	max_size = 24
			*	min_size = 10
			*	opts.steams.length = 10
			*	印出結果24.22.20.18.16.14.12.10.10.10*/
			SizeI = Math.ceil(SizeI);
			for( var i = 0 ; i < opts.steams.length ; i++){
				Size_Arr[opts.steams[i]] = now_size ;
				if( now_size - SizeI >= min_size ){//是否小於最小範圍
					now_size -= SizeI;
				}
			}
		}
		//亂數
		for( var a = 0 ; a < opts.steams.length ; a++ ){
			var ran = Math.floor(Math.random()*(opts.steams.length-1));
			var tmp = opts.steams[a];
			opts.steams[a] = opts.steams[ran];
			opts.steams[ran] = tmp;
			
		}
		//opts.steams.sort(function(){return Math.random()>0.5?-1:1});
		
		setInterval(function(){
			if( str_max_times != keyword_times ){
				steam();
			}else if( opts.reKeywords ){
				steam();
			}
		}, rand( opts.makeSteamInterval / 2 , opts.makeSteamInterval * 2 ) );
		
		if( opts.windSwitch ){
			wind();
		}
		
		
		return $coffee ;
		
		function steam(){
			coffeeSteamBoxWidth = $coffeeSteamBox.width();		
			var fontSize = Size_Arr[opts.steams [keyword_times]];//rand( opts.steamMinSize , opts.steamMaxSize  ) ;
			var xPos = rand( coffeeSteamBoxWidth - coffeeWidth , coffeeSteamBoxWidth - opts.coffeeHandleWidth - fontSize );
			var rotate = rand(-10,10);
			var rotateStyle = ' -moz-transform:rotate('+rotate+'deg);-webkit-transform:rotate('+rotate+'deg);-o-transform:rotate('+rotate+'deg);transform:rotate('+rotate+'deg);';
			var color = randoms( 1 , opts.steamFontColor )//'#'+ randoms(6 , '0123456789ABCDEF' );
			var steamsFontFamily = randoms( 1, opts.steamsFontFamily )
			var html = '<span class="coffee-steam" style="position:absolute;left:'+xPos+'px;top: '+opts.steamTopMax+'px;font-size:'+fontSize+'px;color:'+ color +';font-family:'+steamsFontFamily +';'+rotateStyle+';-webkit-text-size-adjust:none;display:block; ">'+  opts.steams [keyword_times] +'</span>';	//randoms( 1, opts.steams )		
			var html_txt = '<span style="font-size:'+fontSize+'px;color:'+ color +';font-family:'+steamsFontFamily +';'+rotateStyle+';">'+  opts.steams [keyword_times] +'</span>';
			var $fly = $(html);
			var $show_str = $(html_txt);
			var left = rand( 0 , coffeeSteamBoxWidth - opts.coffeeHandleWidth - fontSize );
			//alert($fly.attr("style"));
			
			if( left > xPos )
				left = rand( 150 , 268 );//left = rand( 0 , xPos );
			$fly.appendTo($coffeeSteamBox).animate({
				top		: rand( opts.steamTopMax / 2 , 0 ),
				left	: left,
				opacity	: 0.05
			} , rand( opts.SteamFlyTime / 3 * 2 , opts.SteamFlyTime * 1.2 ) , 'flyFastSlow' ,  function(){
				if( str_max_times > str_times ){
					$(opts.appendDIV ).append(' <a href="/?action=search_result&mode=easy&Search_Keywords='+$show_str.text()+'" style="'+$show_str.attr("style")+'" >'+$show_str.html()+'</a>');
					$(opts.appendDIV).children("a:last").hover(function(){
							$(this).css({"font-size":"+=5px"});
						},function(){
							$(this).css({"font-size":"-=5px"});
						}
					)
					str_times++;
				}
				$fly.remove();
				$fly = null;
				
			});
			
			keyword_times++;
			
			//歸零
			if( opts.steams.length == keyword_times && opts.reKeywords ){
				keyword_times = 0 ;
			}
			
		};
		
		function wind(){
			var left = rand( - coffeeWidth + opts.coffeeHandleWidth , 0 );
			//左右飄的感覺
			$coffeeSteamBox.animate({
				width : Math.abs(left) + coffeeWidth ,
				left	: left 
			} , rand( 1000 , 3000) , rand( 1 , ['flyFastSlow' ]),  function(){
				 setTimeout(function(){
					wind();	
				}, rand( 100 , 3000 ) ) ;
			});
		};
		
		function randoms( length , chars ) {
			length = length || 1 ;
			var hash = '';
			var maxNum = chars.length - 1;
			var num = 0;
			for( i = 0; i < length; i++ ) {
				num = rand( 0 , maxNum - 1  );
				hash += chars.slice( num , num + 1 );
			}
			return hash;
		};		
		function rand(mi,ma){   
			var range = ma - mi;
			var out = mi + Math.round( Math.random() * range) ;	
			return parseInt(out);
		};		
	};

	$.fn.coffee.defaults = {
		steams				: ['jQuery','HTML5','HTML6','CSS2','CSS3','JS','$.fn()','char','short','if','float','else','type','case','function','travel','return','array()','empty()','eval','C++','JAVA','PHP','JSP','.NET','while','this','$.find();','float','$.ajax()','addClass','width','height','Click','each','animate','cookie','bug','Design','Julying','$(this)','i++','Chrome','Firefox','Firebug','IE6','Guitar' ,'Music' ,'攻城师' ,'旅行' ,'王子墨','啤酒'], 
		steamsFontFamily	: ['Verdana','Geneva','Comic Sans MS','MS Serif','Lucida Sans Unicode','Times New Roman','Trebuchet MS','Arial','Courier New','Georgia'],
		steamFontColor		: ['#556699','#885544','#159864','#d98542','#ad9e65','#5b8c90'],
		SteamFlyTime		: 5000 , /*Steam飞行的时间,单位 ms 。（决定steam飞行速度的快慢）*/
		makeSteamInterval	: 400 , /*制造Steam时间间隔,单位 ms.*/
		steamMinSize		: 8 ,/*字型最小.*/
		steamMaxSize		: 30 ,/*字型最大*/
		steamTopMax			: 200,/*字出現的高度*/
		coffeeHandleWidth	: 300,/*左右搖擺寬度*/
		steamsShowMax		: 10,/*最大出現字數*/
		appendDIV			: "#appendkeyword",
		windSwitch			: true,/*左右搖擺開關*/
		reKeywords			: true/*重複*/
	};
	$.fn.coffee.version = '1.0.0';
})(jQuery);