js+vml的画图类

来源：互联网发布：软件评测师教材编辑：程序博客网时间：2024/04/28 04:43

for(i=0;i<5;i++){
   l+="<v:line from="+30+","+(70+i*(ph-100)/5)+" to="+(pw-10)+","+(70+i*(ph-100)/5)+" strokecolor=#c0c0c0><v:stroke dashstyle=dash /></v:line>"
   l+="<span style='position:absolute;z-index:3;font:12;left:"+10+";top:"+(65+i*(ph-100)/5)+"'>"+(parseInt(max)*(5-i)/5)+"</span>"
}

for(i in a){
   for(j in a[i]){
    if(i==0){
     if(j>0){
      l+="<v:rect fillcolor='"+this.ac[j-1]+"' style='position:absolute;left:"+(j*80-20)+";top:30;width:20;height:20' />"
      l+="<span style='position:absolute;z-index:3;font:12;left:"+(j*80+5)+";top:35'>"+a[i][j]+"</span>"
     }
    }
    else{
     if(j==0)
      l+="<span style='position:absolute;z-index:3;font:12;left:"+(i*40)+";top:"+(ph-25)+"'>"+a[i][j]+"</span>"
     else{
      ch=a[i][j]*hsz
      if(i>1){
       oh=parseInt(a[i-1][j]*hsz)
       l+="<v:line from="+((i-1)*40)+","+(ph-oh-30)+" to="+(i*40)+","+(ph-ch-30)+" strokecolor='"+this.ac[j-1]+"' />"
      }
      l+="<v:rect title='"+a[i][j]+"' fillcolor='"+this.ac[j-1]+"' style='z-index:3;position:absolute;left:"+(i*40-1)+";top:"+(ph-ch-31)+";width:3;height:"+3+"' />"
      if(this.getCss(css,"showVal")=="t")
       l+="<span style='position:absolute;z-index:3;font:12;left:"+(i*40-5)+";top:"+(ph-ch-42)+"'>"+a[i][j]+"</span>"
     }
    }
   }
}
return l

}
this.pie=function(vList,css){
var l="",a,i,j,n,s,amt,dx=0
var pw=this.getCss(css,"width",500),ph=this.getCss(css,"height",300)
if(ph<150||pw<150){
   alert("图表区域太小，中断输出！")
   return
}
a=vList.split(";")
n=a.length*170-130
if(pw<n)
   pw=n
l+="<v:rect fillcolor='"+this.getCss(css,"background","white")+"' style='position:absolute;left:0;top:0;width:"+pw+";height:"+ph+"'><v:shadow on=t type=emboss opacity=80% offset='3px,3px' offset2='5px,5px' /></v:rect>"
l+="<span style='position:absolute;z-index:3;font:12;left:220;top:10'>"+this.getCss(css,"title")+"</span>"
if(a.length==2)
   dx=pw/2-100
if(a.length==3)
   dx=pw/2-180
for(i in a){
   a[i]=a[i].split(",")
   amt=0
   for(j=1;j<a[i].length;j++){
    amt+=parseFloat(a[i][j])
   }
   sa=0
   for(j in a[i]){
    if(i==0){
     if(j>0){
      l+="<v:rect fillcolor='"+this.ac[j-1]+"' style='position:absolute;left:"+(j*80-20)+";top:30;width:20;height:20' />"
      l+="<span style='position:absolute;z-index:3;font:12;left:"+(j*80+5)+";top:35'>"+a[i][j]+"</span>"
     }
    }
    else{
     if(j==0){
      l+="<span style='position:absolute;z-index:3;font:12;left:"+(i*170-90+dx)+";top:"+(ph-50)+"'>"+a[i][j]+"("+amt+")</span>"
     }
     else{
      ea=a[i][j]*360/amt+sa
      if(j==a[i].length-1)
       ea=0
      if(a[i][j]>0)
       l+=this.getPie(60,sa,ea,"title:"+a[i][j]+";val:"+(parseInt((10000*a[i][j]/amt))/100)+"%;x:"+(i*170-70+dx)+";y:"+(ph/2+10)+";background:"+this.ac[j-1])
      sa=ea
     }
    }
   }
}
return l
}
this.getPie=function(r,sa,ea,css){
var sf,ef,sx,sy,ex,ey
var title=this.getCss(css,"title"),val=this.getCss(css,"val")
var x=parseInt(this.getCss(css,"x",0)),y=parseInt(this.getCss(css,"y",0))
sf=Math.PI*(sa/180)
ef=Math.PI*(ea/180)
sy=parseInt(r*Math.sin(sf))
sx=parseInt(r*Math.cos(sf))
ey=parseInt(r*Math.sin(ef))
ex=parseInt(r*Math.cos(ef))

s="m0,0l"+sx+","+sy+"ar-"+r+",-"+r+","+r+","+r+","+ex+","+ey+","+sx+","+sy+",l0,0xe"
l="<v:shape path='"+s+"' title='"+title+"' coordsize=1,1 style='position:absolute;width:1;height:1;left:"+this.getCss(css,"x","0")+";top:"+this.getCss(css,"y","0")+"' fillcolor='"+this.getCss(css,"background","white")+"' />"
if(ef==0)
   ef=270
var cx=(r+10)*Math.cos((sf+ef)/2),cy=(r+10)*Math.sin((sf+ef)/2)
l+="<span style='position:absolute;z-index:3;font:12;left:"+(cx+x-10)+";top:"+(cy+y-5)+"'>"+val+"</span>"
return l
}
this.draw=function(vList,css){
var l,type=this.getCss(css,"type")
if(type=="pie")
   l=this.pie(vList,css)
else if(type=="lines")
   l=this.lines(vList,css)
else
   l=this.bar(vList,css)
return l
}
}
</script>
<html>
<body style=margin:0>
<div id=div1 style=position:absolute;top:0;cursor:default>
</div>
<div id=div2 style=position:absolute;top:300;cursor:default>
</div>
<div id=div3 style=position:absolute;top:600;cursor:default>
</div>

</html>
<script>
//---柱形图
div1.innerHTML=ct1.draw("季度,东部,中部,北部;1季度,20.4,30.6,90;2季度,27.4,38.6,34.6;3季度,45.9,0,0","type:bar;showVal:t;vname:销售额;title:月统计图")
//---线形图
div2.innerHTML=ct1.draw("季度,东部,中部,北部;1季度,20.4,30.6,90;2季度,27.4,38.6,34.6;3季度,45.9,0,0","type:lines;showVal:t;vname:销售额;title:月统计图")
//---饼形图
div3.innerHTML=ct1.draw("季度,东部,中部,北部;1季度,20.4,30.6,90;2季度,27.4,38.6,34.6;3季度,45.9,0,0","type:pie;showVal:t;vname:销售额;title:月统计图")

</script>