177 lines
7.3 KiB
JavaScript
177 lines
7.3 KiB
JavaScript
/*--------------------------------------------------------------------------------------------------*/
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$.fn.extend({//添加滚轮事件
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mousewheel:function(Func){
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return this.each(function(){
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var _self = this;
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_self.D = 0;//滚动方向
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if($.browser.msie||$.browser.safari){
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_self.onmousewheel=function(){_self.D = event.wheelDelta;event.returnValue = false;Func && Func.call(_self);};
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}else{
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_self.addEventListener("DOMMouseScroll",function(e){
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_self.D = e.detail>0?-1:1;
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e.preventDefault();
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Func && Func.call(_self);
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},false);
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}
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});
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}
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});
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$.fn.extend({
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jscroll:function(j){
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return this.each(function(){
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j = j || {}
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j.Bar = j.Bar||{};//2级对象
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j.Btn = j.Btn||{};//2级对象
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j.Bar.Bg = j.Bar.Bg||{};//3级对象
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j.Bar.Bd = j.Bar.Bd||{};//3级对象
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j.Btn.uBg = j.Btn.uBg||{};//3级对象
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j.Btn.dBg = j.Btn.dBg||{};//3级对象
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var jun = { W:"15px"
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,BgUrl:""
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,Bg:"#efefef"
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,Bar:{ Pos:"up"
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,Bd:{Out:"#b5b5b5",Hover:"#ccc"}
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,Bg:{Out:"#fff",Hover:"#fff",Focus:"orange"}}
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,Btn:{ btn:true
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,uBg:{Out:"#ccc",Hover:"#fff",Focus:"orange"}
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,dBg:{Out:"#ccc",Hover:"#fff",Focus:"orange"}}
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,Fn:function(){}}
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j.W = j.W||jun.W;
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j.BgUrl = j.BgUrl||jun.BgUrl;
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j.Bg = j.Bg||jun.Bg;
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j.Bar.Pos = j.Bar.Pos||jun.Bar.Pos;
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j.Bar.Bd.Out = j.Bar.Bd.Out||jun.Bar.Bd.Out;
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j.Bar.Bd.Hover = j.Bar.Bd.Hover||jun.Bar.Bd.Hover;
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j.Bar.Bg.Out = j.Bar.Bg.Out||jun.Bar.Bg.Out;
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j.Bar.Bg.Hover = j.Bar.Bg.Hover||jun.Bar.Bg.Hover;
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j.Bar.Bg.Focus = j.Bar.Bg.Focus||jun.Bar.Bg.Focus;
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j.Btn.btn = j.Btn.btn!=undefined?j.Btn.btn:jun.Btn.btn;
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j.Btn.uBg.Out = j.Btn.uBg.Out||jun.Btn.uBg.Out;
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j.Btn.uBg.Hover = j.Btn.uBg.Hover||jun.Btn.uBg.Hover;
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j.Btn.uBg.Focus = j.Btn.uBg.Focus||jun.Btn.uBg.Focus;
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j.Btn.dBg.Out = j.Btn.dBg.Out||jun.Btn.dBg.Out;
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j.Btn.dBg.Hover = j.Btn.dBg.Hover||jun.Btn.dBg.Hover;
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j.Btn.dBg.Focus = j.Btn.dBg.Focus||jun.Btn.dBg.Focus;
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j.Fn = j.Fn||jun.Fn;
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var _self = this;
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var Stime,Sp=0,Isup=0;
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$(_self).css({overflow:"hidden",position:"relative",padding:"0px"});
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var dw = $(_self).width(), dh = $(_self).height()-1;
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var sw = j.W ? parseInt(j.W) : 21;
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var sl = dw - sw
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var bw = j.Btn.btn==true ? sw : 0;
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if($(_self).children(".jscroll-c").height()==null){//存在性检测
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$(_self).wrapInner("<div class='jscroll-c' style='top:0px;z-index:9999;zoom:1;position:relative'></div>");
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$(_self).children(".jscroll-c").prepend("<div style='height:0px;overflow:hidden'></div>");
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$(_self).append("<div class='jscroll-e' unselectable='on' style=' height:100%;top:0px;right:0;-moz-user-select:none;position:absolute;overflow:hidden;z-index:10000;'><div class='jscroll-u' style='position:absolute;top:0px;width:100%;left:0;background:blue;overflow:hidden;'></div><div class='jscroll-h' unselectable='on' style='background:green;position:absolute;left:0;-moz-user-select:none;border-top:1px solid;border-bottom:1px solid;'></div><div class='jscroll-d' style='position:absolute;bottom:0px;width:100%;left:0;background:blue;overflow:hidden'></div></div>");
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}
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var jscrollc = $(_self).children(".jscroll-c");
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var jscrolle = $(_self).children(".jscroll-e");
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var jscrollh = jscrolle.children(".jscroll-h");
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var jscrollu = jscrolle.children(".jscroll-u");
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var jscrolld = jscrolle.children(".jscroll-d");
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if($.browser.msie){document.execCommand("BackgroundImageCache", false, true);}
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jscrollc.css({"padding-right":sw});
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jscrolle.css({width:sw,background:j.Bg,"background-image":j.BgUrl});
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jscrollh.css({top:bw,background:j.Bar.Bg.Out,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Out,width:sw});
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jscrollu.css({height:bw,background:j.Btn.uBg.Out,"background-image":j.BgUrl});
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jscrolld.css({height:bw,background:j.Btn.dBg.Out,"background-image":j.BgUrl});
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jscrollh.hover(function(){if(Isup==0)$(this).css({background:j.Bar.Bg.Hover,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Hover})},function(){if(Isup==0)$(this).css({background:j.Bar.Bg.Out,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Out})})
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jscrollu.hover(function(){if(Isup==0)$(this).css({background:j.Btn.uBg.Hover,"background-image":j.BgUrl})},function(){if(Isup==0)$(this).css({background:j.Btn.uBg.Out,"background-image":j.BgUrl})})
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jscrolld.hover(function(){if(Isup==0)$(this).css({background:j.Btn.dBg.Hover,"background-image":j.BgUrl})},function(){if(Isup==0)$(this).css({background:j.Btn.dBg.Out,"background-image":j.BgUrl})})
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var sch = jscrollc.height();
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//var sh = Math.pow(dh,2) / sch ;//Math.pow(x,y)x的y次方
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var sh = (dh-2*bw)*dh / sch
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if(sh<10){sh=10}
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var wh = sh/6//滚动时候跳动幅度
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// sh = parseInt(sh);
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var curT = 0,allowS=false;
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jscrollh.height(sh);
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if(sch<=dh){jscrollc.css({padding:0});jscrolle.css({display:"none"})}else{allowS=true;}
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if(j.Bar.Pos!="up"){
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curT=dh-sh-bw;
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setT();
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}
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jscrollh.bind("mousedown",function(e){
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j['Fn'] && j['Fn'].call(_self);
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Isup=1;
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jscrollh.css({background:j.Bar.Bg.Focus,"background-image":j.BgUrl})
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var pageY = e.pageY ,t = parseInt($(this).css("top"));
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$(document).mousemove(function(e2){
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curT =t+ e2.pageY - pageY;//pageY浏览器可视区域鼠标位置，screenY屏幕可视区域鼠标位置
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setT();
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});
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$(document).mouseup(function(){
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Isup=0;
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jscrollh.css({background:j.Bar.Bg.Out,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Out})
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$(document).unbind();
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});
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return false;
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});
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jscrollu.bind("mousedown",function(e){
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j['Fn'] && j['Fn'].call(_self);
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Isup=1;
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jscrollu.css({background:j.Btn.uBg.Focus,"background-image":j.BgUrl})
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_self.timeSetT("u");
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$(document).mouseup(function(){
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Isup=0;
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jscrollu.css({background:j.Btn.uBg.Out,"background-image":j.BgUrl})
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$(document).unbind();
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clearTimeout(Stime);
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Sp=0;
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});
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return false;
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});
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jscrolld.bind("mousedown",function(e){
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j['Fn'] && j['Fn'].call(_self);
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Isup=1;
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jscrolld.css({background:j.Btn.dBg.Focus,"background-image":j.BgUrl})
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_self.timeSetT("d");
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$(document).mouseup(function(){
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Isup=0;
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jscrolld.css({background:j.Btn.dBg.Out,"background-image":j.BgUrl})
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$(document).unbind();
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clearTimeout(Stime);
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Sp=0;
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});
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return false;
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});
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_self.timeSetT = function(d){
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var self=this;
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if(d=="u"){curT-=wh;}else{curT+=wh;}
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setT();
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Sp+=2;
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var t =500 - Sp*50;
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if(t<=0){t=0};
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Stime = setTimeout(function(){self.timeSetT(d);},t);
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}
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jscrolle.bind("mousedown",function(e){
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j['Fn'] && j['Fn'].call(_self);
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curT = curT + e.pageY - jscrollh.offset().top - sh/2;
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asetT();
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return false;
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});
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function asetT(){
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if(curT<bw){curT=bw;}
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if(curT>dh-sh-bw){curT=dh-sh-bw;}
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jscrollh.stop().animate({top:curT},100);
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var scT = -((curT-bw)*sch/(dh-2*bw));
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jscrollc.stop().animate({top:scT},1000);
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};
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function setT(){
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if(curT<bw){curT=bw;}
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if(curT>dh-sh-bw){curT=dh-sh-bw;}
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jscrollh.css({top:curT});
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var scT = -((curT-bw)*sch/(dh-2*bw));
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jscrollc.css({top:scT});
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};
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$(_self).mousewheel(function(){
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if(allowS!=true) return;
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j['Fn'] && j['Fn'].call(_self);
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if(this.D>0){curT-=wh;}else{curT+=wh;};
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setT();
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})
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});
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}
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});
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