JS生成VML画曲线图代码[精华]

时间：2022-07-02 14:39:32 编辑：袖梨来源：一聚教程网

提示：您可以先修改部分代码再运行

// Init www.111com.net
VMLCurve.prototype.init = function(strObj,strTitle){
    
    this.gpcX            = this.gpWidth/this.n;            // coordsize X
    this.gpcY            = this.gpHeight/this.n;            // coordsize Y    
    this.configXLen          = this.gpWidth - this.configYLeft*2+20;    // 定义 X轴长度
    this.configYLen          = this.gpHeight- 100;            // 定义 Y 轴长度
    this.configXNum        = this.configXValue.length;        // X轴刻度数
    this.configYNum        = this.configYValue.length;        // Y轴刻度数    
    this.configXTop        = this.configYLen+20;            //定义 X轴距对象上边的距离    
    this.configXPerLen    = str2Float((this.configXLen-20)/this.configXNum,2); //定义 X轴每刻度长度
    this.configYPerLen    = str2Float((this.configYLen-20)/this.configYNum,2); //定义 Y轴每刻度长度

//初始化背景参数
    this.bgWidth        = this.gpWidth;        // Height
    this.bgHeight        = this.gpHeight;    // Width    
    if(this.configYPerValue!=0){ 
        var tempArr = new Array(this.configYNum);
        for(var i=0;i<this.configYNum;i++){
            tempArr[i] = str2Float(this.configYMinValue+this.configYPerValue*i,2);
        }
        this.configYValue = tempArr; 
    }
    else {
        this.configYPerValue = str2Float((this.configYValue(this.configYNum)-this.configYMinValue)/this.configYNum,2); 
    } 
    
   if(this.configXPerValue!=0){ 
        var tempArr = new Array(this.configXNum);
        for(var i=0;i<this.configXNum;i++){
            tempArr[i] = str2Float(this.configXMinValue+this.configXPerValue*i,2);
        }
        this.configXValue = tempArr;  
    }else{
         //this.configXPerValue = str2Float((this.configXValue(this.configXNum)-this.configXMinValue)/this.configXNum,2); 
    } 
    
    this.configYValue  = this.configYValue.reverse();    //倒序数组 
    this.createGroup();
    this.createBackgroud();
    this.createCoordinate();
    this.createXTableLine();
    this.createYTableLine();
    this.createToolTip();    
    this.setTitle(strTitle);
    this.strObj = strObj;
}

//建立画图区域 www.111com.net
VMLCurve.prototype.createGroup = function() {
    this.group = document.createElement("<v:group ID="group1" coordsize=""+this.gpcX+","+this.gpcY+"" style="z-index:-10;width:"+this.gpWidth+"px;height:"+this.gpHeight+"px">");
    this.objDiv.insertBefore(this.group);
}

//填充背景
VMLCurve.prototype.createBackgroud = function() {
    this.Background = document.createElement("<v:rect fillcolor="white" strokecolor="black" style="z-index:-8;width:"+this.bgWidth+"px;height:"+this.bgHeight+"px" />");
    this.Background.insertBefore(document.createElement("<v:fill rotate="t" type="gradient" color2=""+this.bgColor+"" />"));
    this.Background.insertBefore(document.createElement("<v:shadow on="t" type="single" color="silver" offset="3pt,3pt" />"));
    this.group.insertBefore(this.Background);
}

//建立坐标轴
VMLCurve.prototype.createCoordinate = function() {
    var pointX1 = this.configYLeft + "," + this.configXTop;
    var pointX2 = this.configYLeft+this.configXLen + "," + this.configXTop;
    var pointY1 = pointX1;
    var pointY2 = this.configYLeft + "," + eval(this.configXTop-this.configYLen);
    this.createCoordinateLine(pointY1,pointX2);
    this.createCoordinateLine(pointY1,pointY2);
    this.setOriginValue(this.OriginXValue,this.OriginYValue);
}

//建立坐标线
VMLCurve.prototype.createTableLine = function(xPoint,yPoint,sTableColor){
    var tempLine = document.createElement("<v:line from=""+xPoint+"" to=""+yPoint+"" strokeColor=""+sTableColor+"" style="Z-INDEX:8;POSITION:absolute;/>");
    this.group.insertBefore(tempLine);
    tempLine.insertBefore(document.createElement("<v:stroke dashstyle="Solid" />"));
}

//画坐标轴线
VMLCurve.prototype.createCoordinateLine = function(xPoint,yPoint){
    var tempLine = document.createElement("<v:line from=""+xPoint+"" to=""+yPoint+"" strokeColor="#FF6600" strokeweight="1px" style="Z-INDEX:8;POSITION:absolute;"/>");
    this.group.insertBefore(tempLine);
    tempLine.insertBefore(document.createElement("<v:stroke  EndArrow="classic" />"));
}

//创建文本提示信息
VMLCurve.prototype.createText = function(xLeft,xTop,sText,sClass) {
    var tempObj = document.createElement("<P class=""+sClass+"" style="Z-INDEX:8;LEFT:"+xLeft+"px;POSITION:absolute;TOP:"+xTop+"px;"/>");
    tempObj.innerHTML = sText;
    this.group.insertBefore(tempObj);
}

// 创建X坐标网格线
VMLCurve.prototype.createXTableLine = function(){
    var x1,y1,x2,y2,point1,point2,sTableColor;
    sTableColor = "#CCCCCC";
    for(var i=0;i<this.configXValue.length;i++){
        x1 = eval(this.configYLeft + this.configXPerLen*(i+1));
        y1 = eval(this.configXTop-this.configYLen)+10;
        x2 = x1;
        y2 = eval(this.configXTop+5);
        point1 = x1 + "," + y1; 
        point2 = x2 + "," + y2;
        this.createTableLine(point1,point2,sTableColor);
        this.createText(x1+this.configXTextLeft,this.configXTop+this.configXTextTop,this.configXValue[i],"pBlack");
    }
}

//创建Y轴坐标网格线
VMLCurve.prototype.createYTableLine = function(){
    var x1,y1,x2,y2,point1,point2,sTableColor;
    for(var i=0;i<this.configYValue.length;i++){
        x1 = eval(this.configYLeft - 5);
        y1 = eval(this.configXTop - this.configYPerLen*(i+1));
        x2 = eval(this.configYLeft + this.configXLen - 10);
        y2 = y1;
        point1 = x1 + "," + y1; 
        point2 = x2 + "," + y2;
        if(this.configYValue[this.configYValue.length-i-1]=="C2") sTableColor="#FF9900";
        else sTableColor = "#CCCCCC";
        this.createTableLine(point1,point2,sTableColor);
        this.createText(this.configYLeft-this.configYTextRight,y1-this.configYTextBottom,this.configYValue[this.configYValue.length-i-1],"pBlack");
    }
}

//设置标题
VMLCurve.prototype.setTitle = function(strTitle){
    var tempObj = document.createElement("<div class="Title" style="POSITION:absolute;Z-INDEX:9;LEFT:"+40+"px;TOP:"+(this.configXTop+40)+"px;width:"+(this.configXLen)+"px;height:"+(this.gpHeight-this.configXTop-20)+";/>");
    tempObj.innerHTML = strTitle;
    this.group.insertBefore(tempObj);
}

// 画圆点坐标
VMLCurve.prototype.setOriginValue = function(x,y){
    this.createText(this.configYLeft+this.configXTextLeft,this.configXTop+this.configXTextTop,x,"pBlack");
    this.createText(this.configYLeft-this.configYTextRight,this.configXTop-this.configYTextBottom,y,"pBlack");
}

// 设置圆点坐标属性
VMLCurve.prototype.setPointsProp = function(sPointRadius,sLineSize,sPointColor,sLineColor){
    PointRadius = sPointRadius;         //圆点的半径大小
    LineSize    = sLineSize;              //线的大小
    PointColor  = sPointColor;            //点的颜色
    LineColor   = sLineColor;            //线的颜色
}

// 设置纵坐标的值
VMLCurve.prototype.setPointsValue = function(xValueArr,yValueArr,sValueArr){
    var sValue  = "";
    var xValue  = 0;
    var yValue  = 0;
    var tempLen = 0;
    var thisX   = 0; 
    var thisY   = 0; 
    var tempX   = 0;
    var tempY   = 0; 
    for(var i=0;i<xValueArr.length;i++){
        thisX   = str2Float(xValueArr[i],2); 
        thisY   = str2Float(yValueArr[i],2); 
        sValue  = sValueArr[i]; 
        //tempX   = str2Float((thisX - this.OriginXValue)/this.configXPerValue,2);
        tempY   = str2Float((thisY - this.OriginYValue)/this.configYPerValue,2);
        xValue  = str2Float(this.configYLeft + str2Float(thisX*this.configXPerLen,2),2);
        yValue  = str2Float(this.configXTop - str2Float(tempY*this.configYPerLen,2),2);
        sValue  += "<br>坐标值[X,Y]:[" + xValue + "," + yValue + "]";
        sValue  += "<br>实际值[X,Y]:[" + thisX + "," + thisY + "]";
        //this.PointsYCount  += str2Float(yValueArr[i],2);
        //this.PreviousPointY = yValueArr[i];        
        this.Points = this.Points + xValue + "," + yValue + " ";    
        this.createPoint(xValue,yValue,sValue);
    }
    this.createCurveLine();
    this.PreviousPointY = 0;
    this.Points         = 0;
    this.PointsYCount   = 0;
}

// create Point
VMLCurve.prototype.createPoint = function(sLeft,sTop,sText){
    //根据圆点的坐标,得到左上方点的坐标
    var xLeft  = sLeft - this.PointRadius;
    var xTop   = sTop  - this.PointRadius;
    var tempOval = document.createElement("<v:oval style="POSITION:absolute;Z-INDEX:12;LEFT:"+xLeft+"px;TOP:"+xTop+"px;width:"+2*this.PointRadius+";height:"+2*this.PointRadius+";cursor:hand;" stroked="f" fillcolor=""+this.PointColor+"" strokeweight="1px" onmousemove=""+this.strObj+".setToolTip('block','" + sText + "'," + sLeft + "," + sTop + ");" onmouseout=""+this.strObj+".setToolTip('none','');"/>");
    group1.insertBefore(tempOval);
}

//以两点为坐标画线
VMLCurve.prototype.createCurveLine = function(){
    var tempLine = document.createElement("<v:PolyLine Points=""+ this.Points +"" style="Z-INDEX:11;POSITION:absolute;" strokeweight="2px" filled="f" />");
    var newStroke = document.createElement("<v:stroke dashstyle='solid' color='"+this.LineColor+"'/>");
    group1.insertBefore(tempLine);
    tempLine.insertBefore(newStroke);
}

VMLCurve.prototype.createToolTip = function(){
    this.group.insertBefore(this.ToolTip);
}

VMLCurve.prototype.setToolTip = function(sVisitable,sContent,x,y){
    this.ToolTip.style.pixelLeft     = x + this.configToolLeft;
    this.ToolTip.style.pixelTop        = y + this.configToolTop;
    this.ToolTip.style.display        = sVisitable;
    if(this.ToolTip.innerHTML==""){
        this.ToolTip.innerHTML = sContent; 
    }
    if(sContent==""){
        this.ToolTip.innerHTML = "";
    }
}

/*以下代码来自网络,主要功能是对数字进行<a href="http://www.111com.net/zhuanti/geshihua/" target="_blank">格式化</a>
 *原作者不详，敬请谅解。 
 */ 
/*********************************
* 字符串转换为数字(""-->0)as_type--str,num
* 参数说明:
as_str--转换的字符串
ai_digit--转换的小数位数(null--不限制小数位数,0--转换为整型,>0按小数位数转换)
as_type--转换后返回的类型(null,"num"--转换为数字类型,"str"--转换为字符串
(按小数格式化后的字符串)
* 例如:
* str2float("10.2124568795")返回float类型10.2124568795
* str2float("10.6",0)返回Int类型11(使用四舍五入的方法)
* str2float("10.2",2)返回float类型10.1
* str2float("10.2",2,"str")返回String类型"10.20"(按小数位数格式化字符串)
* str2float("10.216",2)返回float类型10.22
* str2float("10.216",2,"str")返回String类型"10.22"
*********************************
*/
function str2Float(as_str,ai_digit,as_type)
{
   var fdb_tmp = 0;
   var fi_digit = 0;
   var fs_digit = "1";
   var fs_str = "" + as_str;
   var fs_tmp1 = "";
   var fs_tmp2 = "";
   var fi_pos = 0;
   var fi_len = 0;
   fdb_tmp = parseFloat(isNaN(parseFloat(fs_str))?0:fs_str);
   
   switch (true)
   {
      case (ai_digit==null):       //不改变值,只转换为数字
         fdb_tmp = fdb_tmp;
         break;
      case (ai_digit==0):          //取得整数
         fdb_tmp = Math.round(fdb_tmp);
         break;
      case (ai_digit>0):            //按照传入的小数点位数四舍五入取值
         for (var i=0;i<ai_digit;i++) fs_digit +="0";
         fi_digit = parseInt(fs_digit);
         fdb_tmp = Math.round(fdb_tmp * fi_digit) / fi_digit;
         if (as_type=="str")
         {
            fs_tmp1 = fdb_tmp.toString();
            fs_tmp1 +=((fs_tmp1.indexOf(".")!=-1)?"":".") + fs_digit.substr(1);
            fi_pos = fs_tmp1.indexOf(".") + 1 + ai_digit;
            fdb_tmp = fs_tmp1.substr(0,fi_pos);
         }
        break;
   }
   return fdb_tmp;
} 
//-->
</script>

.pBlack {
    font-weight:bold;
    font-size:12px;
}

.pRed {
    font-weight:bold;
    font-size:12px;
    color:#FF0000;
}

/*横坐标轴样式*/
.pMonth {
    font-size:66px;
    font-family:"黑体";
    color:#CCCCCC;
    letter-spacing: 3px;
}

/*提示信息样式*/
.ToolTip {
    padding:4px;
    margin:4px;
    background-color: #CCCCCC;
    border: 1px solid #0066FF;
    text-align:left;
}

/*标题显示样式*/
.Title {
    font-family:"宋体", "华文仿宋";
    font-size:16px;
    text-align:center;
    font-weight:bold;
    color:#996600;
    vertical-align:middle;
}

.curveBody{
    margin:0;
    padding:0;
    
    font-size:12px;
}

.curveForm{
    margin:0;
    padding:0;
    
    font-size:12px;
}
</style>
</head>

提示：您可以先修改部分代码再运行

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