当前位置: 首页 > 图文教程 > 网络编程 > Javascript > javascript之水平横向滚动歌词同步的应用

Javascript
javascript options属性集合操作代码
javascript 鼠标悬浮图片显示原图 移出鼠标后原图消失(多图)
javascript 显示当前系统时间代码
firefox和IE系列的相关区别整理 以备后用
extJs 常用到的增,删,改,查操作代码
Javascript 面向对象特性
JavaScript的public、private和privileged模式
通过javascript设置css属性的代码
javascript iframe编程相关代码
滚动条变色 隐藏滚动条与双击网页自动滚屏显示代码
js DOM模型操作
js 学习笔记(三)
用js做一个小游戏平台 (一)
jquery UI 1.72 之datepicker
jQuery的三种$()
JavaScript 常用函数
用javascript实现源代码的隐藏与解密的方法
javascript Onunload与Onbeforeunload使用小结
Javascript的闭包
JavaScript 对Cookie 操作的封装小结

Javascript 中的 javascript之水平横向滚动歌词同步的应用


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-12   浏览: 235 ::
收藏到网摘: n/a

参考地址:http://aboutplayer.com
复制代码 代码如下:

var lrc0, lrc1, lrc2;
moveflag = false;
var top, bottom;
var lrcobj;
var lrctop;
predlt = 0;
curdlt = 0;
function lrcClass(tt)
{
this.inr = [];
this.oTime = 0;
this.dts = -1;
this.dte = -1;
this.dlt = -1;
this.ddh;
this.fjh;
if(/\[offset\:(\-?\d+)\]/i.test(tt))
this.oTime = RegExp.$1/1000;
tt = tt.replace(/\[\:\][^$\n]*(\n|$)/g,"$1");
tt = tt.replace(/\[[^\[\]\:]*\]/g,"");
tt = tt.replace(/\[[^\[\]]*[^\[\]\d]+[^\[\]]*\:[^\[\]]*\]/g,"");
tt = tt.replace(/\[[^\[\]]*\:[^\[\]]*[^\[\]\d\.]+[^\[\]]*\]/g,"");
tt = tt.replace(/<[^<>]*[^<>\d]+[^<>]*\:[^<>]*>/g,"");
tt = tt.replace(/<[^<>]*\:[^<>]*[^<>\d\.]+[^<>]*>/g,"");
while(/\[[^\[\]]+\:[^\[\]]+\]/.test(tt))
{
tt = tt.replace(/((\[[^\[\]]+\:[^\[\]]+\])+[^\[\r\n]*)[^\[]*/,"\n");
var zzzt = RegExp.$1;
/^(.+\])([^\]]*)$/.exec(zzzt);
var ltxt = RegExp.$2;
var eft = RegExp.$1.slice(1,-1).split("][");
for(var ii=0; ii<eft.length; ii++)
{
var sf = eft[ii].split(":");
var tse = parseInt(sf[0],10) * 60 + parseFloat(sf[1]);
var sso = { t:[] , w:[] , n:ltxt }
sso.t[0] = Math.round((tse-this.oTime)*1000)/1000;
this.inr[this.inr.length] = sso;
}
}
this.inr = this.inr.sort( function(a,b){return a.t[0]-b.t[0];} );
for(var ii=0; ii<this.inr.length; ii++)
{
while(/<[^<>]+\:[^<>]+>/.test(this.inr[ii].n))
{
this.inr[ii].n = this.inr[ii].n.replace(/<(\d+)\:([\d\.]+)>/,"%=%");
var tse = parseInt(RegExp.$1,10) * 60 + parseFloat(RegExp.$2);
this.inr[ii].t[this.inr[ii].t.length] = Math.round((tse-this.oTime)*1000)/1000;
}
lrcbc1.innerHTML = "<font>"+ this.inr[ii].n.replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">").replace(/%=%/g,"</font><font>") +" </font>";
var fall = lrcbc1.getElementsByTagName("font");
for(var wi=0; wi<fall.length; wi++)
this.inr[ii].w[this.inr[ii].w.length] = fall[wi].offsetWidth;
this.inr[ii].n = lrcbc1.innerText;
}
this.overtop = function()
{
var ii;
for(ii=this.inr.length-1; ii>0 && this.inr[ii].t[0]>ffbb; ii--){}
top = ii;
}
this.run = function(tme)
{
if(tme<this.dts || tme>=this.dte)
{
var ii;
for(ii=this.inr.length-1; ii>=0 && this.inr[ii].t[0]>tme; ii--){}
if(ii<0) return;
this.ddh = this.inr[ii].t;
this.fjh = this.inr[ii].w;
this.dts = this.inr[ii].t[0];
this.dte = (ii<this.inr.length-1)?this.inr[ii+1].t[0]:aboutplayer.currentMedia.duration;
if(!movable)
{
lrctop = 140;
lrcoll.style.pixelTop = 140;
lowlight(lrcbox1);
this.overtop();
overbottom();
for(var wi=1; wi<=this.inr.length; wi++)
{
eval("lrcbox"+wi).innerText = this.inr[wi-1].n;
eval("lrcbc"+wi).innerText = this.inr[wi-1].n;
}
movable = true;
}
if(this.dlt>0) lowcolor(eval("lrcbc"+this.dlt));
clearTimeout(lrc2);
if(this.dlt==ii-1)
{
predlt = this.dlt+1;
if(!ptms && predlt>0)
{
eval("lrcbc"+predlt).filters.alpha.opacity = 100;
eval("lrcbc"+predlt).style.width = "100%";
highcolor(0,this.dte-this.dts);
}
toposition(1,this.dte-this.dts);
}
if(ii-this.dlt>1 || ii-this.dlt<=-1)
{
if(this.dlt>=0) lowcolor(eval("lrcbc"+(this.dlt+1)));
if(this.dlt==-1 || ii==0)
{
jumpto(ii-this.dlt-1);
toposition(1,this.dte-this.dts);
}
else
jumpto(ii-this.dlt);
}
if(this.dlt>=0) lowlight(eval("lrcbox"+(this.dlt+1)));
this.dlt = ii;
curdlt = ii;
if(!drdc) highlight(eval("lrcbox"+(this.dlt+1)));
if(drdc)
{
curlowcolor(eval("lrcbc"+(this.dlt+1)));
curhighcolor(0,this.dte-this.dts);
}
}
if(klok)
{
var bbw = 0;
var ki;
for(ki=0; ki<this.ddh.length && this.ddh[ki]<=tme; ki++)
bbw += this.fjh[ki];
var kt = ki-1;
var sc = ((ki<this.ddh.length)?this.ddh[ki]:this.dte) - this.ddh[kt];
var tc = tme - this.ddh[kt];
bbw -= this.fjh[kt] - tc / sc * this.fjh[kt];
if(bbw>eval("lrcbox"+(this.dlt+1)).offsetWidth)
bbw = eval("lrcbox"+(this.dlt+1)).offsetWidth;
eval("lrcbc"+(this.dlt+1)).style.width = Math.round(bbw);
}
}
lrcbox1.innerText = "www.aboutplayer.com";
}
function overbottom()
{
if(aboutplayer.currentMedia.duration>0)
{
var ii;
for(ii=lrcobj.inr.length-1; ii>0 && lrcobj.inr[ii].t[0]-ffbb>=aboutplayer.currentMedia.duration; ii--){}
bottom = ii;
}
else
setTimeout("overbottom()",10);
}
function jumpto(nline)
{
lrctop -= 20*nline;
lrcoll.style.top = lrctop;
}
function toposition(step,dur)
{
if(moveflag) return;
lrcoll.style.top = lrctop--;
if(step<20)
{
step++;
setTimeout("toposition("+step+","+dur+");",dur*50);
}
}
function highcolor(step,dur)
{
if(moveflag) return;
eval("lrcbc"+predlt).filters.alpha.opacity = 100-(step++)*10;
if(step<10)
lrc1 = setTimeout("highcolor("+step+","+dur+");",dur*100);
}
function curhighcolor(step,dur)
{
if(moveflag) return;
eval("lrcbc"+(curdlt+1)).filters.alpha.opacity = (step++)*10;
if(step<10)
lrc2 = setTimeout("curhighcolor("+step+","+dur+");",dur*100);
}
function highlight(lid)
{
lid.style.color = "#00FF00";
}
function lowcolor(lid)
{
clearTimeout(lrc1);
lid.style.width = 0;
lid.filters.alpha.opacity = 100;
}
function curlowcolor(lid)
{
lid.filters.alpha.opacity = 0;
lid.style.width = "100%";
}
function lowlight(lid)
{
lid.style.color = "#0080C0";
}
function lrcrun(m)
{
lrcobj = new lrcClass(m);
lrc0 = setInterval("try {lrcobj.run(aboutplayer.controls.currentPosition+ffbb)} catch(hh){}",10);
}
MakeMovable(lrcollbox);
function MakeMovable(element)
{
element.attachEvent("onmousedown",onmousedown);
element.attachEvent("onmouseup",onmouseup);
element.attachEvent("onmousemove",onmousemove);
flagmove = false;
var s_y, o_y;
curpot = 0;
function onmousedown()
{
if(event.button!=1 || moveflag || !movable || !type || bottom==0) {flagmove = true; return;}
clearTimeout(lrc0);
if(curdlt>0) lowcolor(eval("lrcbc"+curdlt));
lowcolor(eval("lrcbc"+(curdlt+1)));
lowlight(eval("lrcbox"+(curdlt+1)));
if(lrcoll.style.pixelTop>120-top*20) lrcoll.style.top = 120-top*20;
if(lrcoll.style.pixelTop<120-bottom*20) lrcoll.style.top = 120-bottom*20;
s_y = event.clientY;
o_y = lrcoll.style.pixelTop;
element.style.cursor = "n-resize";
element.setCapture();
moveflag = true;
}
function onmousemove()
{
if(event.button!=1 || !moveflag || flagmove) return;
var offy = event.clientY-s_y;
if(o_y+offy<=120-top*20 && o_y+offy>=120-bottom*20) lrcoll.style.top = o_y+offy;
if(o_y+offy>120-top*20) lrcoll.style.top = 120-top*20;
if(o_y+offy<120-bottom*20) lrcoll.style.top = 120-bottom*20;
var pot = Math.floor((lrcoll.style.pixelTop-120)/-20);
if(pot!=curpot)
{
lowlight(eval("lrcbox"+(curpot+1)));
curpot = pot;
highlight(eval("lrcbox"+(curpot+1)));
}
}
function onmouseup()
{
if(!moveflag || flagmove) {flagmove = false; return;}
if(aboutplayer.playState==3)
{
if(lrcoll.style.pixelTop<=120-top*20 && lrcoll.style.pixelTop>100-top*20)
lrcobj.dte = -1;
else
lrcobj.dte = lrcobj.inr[Math.floor((lrcoll.style.pixelTop-120)/-20)-1].t[0];
if(lrcobj.inr[Math.floor((lrcoll.style.pixelTop-120)/-20)].t[0]-ffbb<0)
aboutplayer.controls.currentPosition = 0;
else
aboutplayer.controls.currentPosition = lrcobj.inr[Math.floor((lrcoll.style.pixelTop-120)/-20)].t[0]-ffbb;
lrcobj.dlt = Math.floor((lrcoll.style.pixelTop-120)/-20);
lrctop = lrcoll.style.pixelTop;
}
else
{
lowlight(eval("lrcbox"+(curpot+1)));
highlight(eval("lrcbox"+(curdlt+1)));
lrcoll.style.top = o_y;
}
lrc0 = setInterval("try {lrcobj.run(aboutplayer.controls.currentPosition+ffbb)} catch(hh){}",10);
element.releaseCapture();
element.style.cursor = "hand";
moveflag = false;
}
}