JS定期刷新饼图
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//本来计划加入3D的效果，后来感觉确实不好控制，就懒得动手了
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VMLPie.prototype.CreatePie=function(vGroup){
var mX=Math.pow(2,16) * 360;
//这个参数是划图形的关键
//AE x y width height startangle endangle
//x y表示圆心位置
//width height形状的大小
//startangle endangle的计算方法如下
// 2^16 * 度数
var vTotal=0;
var startAngle=0;
var endAngle=0;
var pieAngle=0;
var prePieAngle=0;
var objRow=null;
var objCell=null;
for(i=0;i<this.all.length;i++){
vTotal+=this.all[i].Value;
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var objLegendRect=document.createElement("v:rect");
var objLegendTable=document.createElement("table");
objLegendTable.cellPadding=0;
objLegendTable.cellSpacing=3;
objLegendTable.width="100%";
with(objLegendRect){
style.left="17000px";
style.top="4000px";
style.width="4000px";
style.height="12000px";
fillcolor="#e6e6e6";
strokeweight="1px";
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objRow=objLegendTable.insertRow();
objCell=objRow.insertCell();
objCell.colSpan="2";
//objCell.style.border="1px outset";
objCell.style.backgroundColor="black";
objCell.style.padding="5px";
objCell.style.color="window";
objCell.style.font="caption";
objCell.innerText="总数:"+vTotal;
var vTextbox=document.createElement("v:textbox");
vTextbox.appendChild(objLegendTable);
objLegendRect.appendChild(vTextbox);
var vShadow=document.createElement("v:shadow");
vShadow.on="t";
vShadow.type="single";
vShadow.color="graytext";
vShadow.offset="2px,2px";
objLegendRect.appendChild(vShadow);
vGroup.appendChild(objLegendRect);
var strAngle="";
for(i=0;i<this.all.length;i++){ //顺序的划出各个饼图
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objFill.angle=parseInt( 360 * (startAngle + endAngle /2));
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objTextbox.innerHTML=this.all[i].Name +":" + this.all[i].Value;
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vPieEl.fillcolor=vColor; //设置颜色
//开始画图例
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objRow.style.height="16px";
var objColor=objRow.insertCell();//颜色标记
objColor.style.backgroundColor=vColor;
objColor.style.width="16px";
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objColor.attachEvent("onmouseover",LegendMouseOverEvent);
objColor.attachEvent("onmouseout",LegendMouseOutEvent);
//objColor.onmouseover="LegendMouseOverEvent()";
//objColor.onmouseout="LegendMouseOutEvent()";
objCell=objRow.insertCell();
objCell.style.font="icon";
objCell.style.padding="3px";
objCell.innerText=this.all[i].Name +":"+this.all[i].Value ;
vGroup.appendChild(vPieEl);
}
}
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VMLPie.prototype.AddData=function(sName,sValue,sTooltipText){
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oData.TooltipText=sTooltipText;
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this.all[iCount]=oData;
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VMLPie.prototype.Clear=function(){
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//以下是函数调用
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objPie.BorderWidth=0; //图表边框
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objPie.Width="600px"; //定义图表宽度
objPie.Height="500px"; //定义图表高度
objPie.backgroundColor="#ffffff"; //定义背景颜色
objPie.Shadow=false; //是否需要阴影 true为是 false为不要阴影
//添加图表数据
//顺序为名称，值，描述
objPie.AddData("北京",60,"北京的人口");
objPie.AddData("上海",52,"上海的固定人口");
objPie.AddData("天津",30,"天津的外地人口");
objPie.AddData("西安",508,"西安城市人口");
objPie.AddData("武汉",30,"武汉的外地人口");
objPie.AddData("重庆",58,"重庆城市人口");
objPie.Draw();
//alert(document.body.outerHTML);
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