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demo2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="./js/snap.svg.js"></script>
<script src="./js/jquery-1.4.4.js"></script>
<style>
svg {border: 1px solid red;}
</style>
</head>
<body>
<svg id="svg" viewbox="0 0 640 520" data="0 0 640 520"></svg>
<script type="text/javascript">
/* 传的就是一个对象options = {
title:{'text':'一级标题','subtitle':'二级标题',x:'',y:''},
legend:{'orient':'',x:'',y:'',data:''}, //'horizontal' | 'vertical' 水平或者垂直
tooltip:{formatter:''},
series:{
radius:'',
center:['',''],
data:[{value:'',name:'',sales:''},{},{}]
}
}
}
*/
//画饼的对象
function drawPie(options,callback){
var svg = Snap(options.id); //svg对象
console.log(svg.node.clientWidth);
var docSvg = $(options.id);
docSvg.attr('position','relative');
var viewObj = svg.attr('viewBox');
var viewObj2 = getRadiusCenter(viewObj,options);
var pieData = options.series.data; //数据数组对象
var circleCenterXY = [viewObj2.centerX,viewObj2.centerY];//圆心
var circleCenterX = viewObj2.centerX;
var circleCenterY = viewObj2.centerY;
var radius = viewObj2.radius;//半径
var pieEdgeXY = new Array(new Array(2)); //画到某个坐标点
pieEdgeXY[0][0] = circleCenterX - radius;
pieEdgeXY[0][1] = circleCenterY;
var motionToXY = new Array(new Array(2)); //点击移动后的坐标
var pathTag = []; //画图的参数
var largeArcFlag = 0;//<180 == 0 >180 == 1
var sweepFlag = 1; //1-顺时针 0-逆时针
var totalValue = 0;//销售数量总和总和
var totalSale = 0;//销售金额总和
var currentPercent = 0;//当前百分比
var perPiePercent = [];//每个画饼的百分比
var piePopup = [];//点击弹出后的标志符false/true
var textXY = []; //文字显示在画饼中的数组
//tooltip对象
var tooltip = '';
if(options.tooltip.show){
tooltip = $('<div>',{id:'pie_tooltip'});
tooltip.css('width','150px').css('height','50px').css('opacity','0.6').css('border-radius','4px;').css('background-color','black').hide();
$('body').append(tooltip);
}
//颜色自定义集合--- 1.按照顺序来 2.数组中随机取，但不能重复
//计算lengend
var ulObj = '';
var divObj = '';
if(options.legend.origent == 'horizontal') {
ulObj = $('<ul>',{'id':'pie'});
ulObj.css('position','absolute').css('list-style-type','none').css('font-size',0.075*circleCenterX).css('color','gray').css('font-weight','bold')
.css('top',parseInt(options.legend.top)/100*circleCenterX+'px').css('right',parseInt(options.legend.right)/100*circleCenterY+'px');
docSvg.after(ulObj);
divObj = $('<div>',{'id':'pie2','style':'width:'+0.8*circleCenterX+'px;height:'+0.2*circleCenterY+'px;position:absolute;'});
docSvg.after(divObj);
}
//计算销量总和 销售金额总和
for(var i=0;i<pieData.length;i++){
totalValue+=pieData[i]['value'];
totalSale+=pieData[i]['sale'];
}
//计算每个画饼的百分比
for(var i =0;i<pieData.length;i++){
perPiePercent[i] = new Number((pieData[i]['value']/totalValue).toFixed(4));
paintPie(i);
}
//画文字
for(var i =0;i<options.showNumber;i++){
svg.paper.text(textXY[i][0],textXY[i][1],pieData[i]['name']).attr({fill:'#FCFCFC',fontSize:'12px'});
}
//计算圆心
function getRadiusCenter(viewObj,options){
var centerX = parseInt(options.series.center[0])*(viewObj.width-viewObj.x)/100;
var centerY = parseInt(options.series.center[1])*(viewObj.height-viewObj.y)/100;
var radius = '';
if(viewObj.width>viewObj.height){
radius = viewObj.height * parseInt(options.series.radius)/100;
}else{
radius = viewObj.width * parseInt(options.series.radius)/100;
}
return {centerX:centerX,centerY:centerY,radius:radius};
}
//画饼
function paintPie(index){
piePopup[index] = false;
largeArcFlag = isLargeArc(perPiePercent[index]);
currentPercent += perPiePercent[index];
pieEdgeXY[index+1] = [(circleCenterX - radius * Math.cos(2 * Math.PI * currentPercent)),(circleCenterY - radius * Math.sin(2 * Math.PI * currentPercent))];
var tempPercent = currentPercent - perPiePercent[index]/2.0;
motionToXY[index] = [(circleCenterX - 20 * Math.cos(2 * Math.PI * tempPercent)-circleCenterXY[0]),(circleCenterY - 20 * Math.sin(2 * Math.PI * tempPercent)-circleCenterXY[1])];
//画饼的路径
pathTag[index] = "M " + circleCenterXY[0] + " " + circleCenterXY[1]+ "L " + pieEdgeXY[index][0] + " " + pieEdgeXY[index][1] + " "+ "A " + radius + " " + radius + " " + 0 + " " + largeArcFlag + " "+ sweepFlag + " " + pieEdgeXY[index+1][0] + " " + pieEdgeXY[index+1][1] + " "+ " Z";
//画饼文字坐标
textXY[index] = [(circleCenterX*(1-0.04) - radius* Math.cos(2 * Math.PI * tempPercent)/2),(circleCenterY - radius* Math.sin(2 * Math.PI * tempPercent)/2)];
//随机颜色
var red = Math.round(Math.random() * 255);
var green = Math.round(Math.random() * 255);
var blue = Math.round(Math.random() * 255);
var color = "rgb(" + red + "," + green + "," + blue +")";
svg.paper.path(pathTag[index]).attr({fill:color,stroke:'#FCFCFC',storkeWidth:'3px'}).click(function(event){
if(!piePopup[index]){
piePopup[index] = true;
this.animate({d:"M " + (circleCenterXY[0]+motionToXY[index][0]) + " " + (circleCenterXY[1]+motionToXY[index][1])+ "L " + (pieEdgeXY[index][0]+motionToXY[index][0]) + " " + (pieEdgeXY[index][1]+motionToXY[index][1]) + " "+ "A " + radius + " " + radius + " " + 0 + " " + largeArcFlag + " "+ sweepFlag + " " + (pieEdgeXY[index+1][0]+motionToXY[index][0]) + " " + (pieEdgeXY[index+1][1]+motionToXY[index][1]) + " "+ " Z"},500,mina.easeinout,function(){});
}else{
piePopup[index] = false;
this.animate({d:"M " + (circleCenterXY[0]) + " " + (circleCenterXY[1])+ "L " + (pieEdgeXY[index][0]) + " " + (pieEdgeXY[index][1]) + " "+ "A " + radius + " " + radius + " " + 0 + " " + largeArcFlag + " "+ sweepFlag + " " + (pieEdgeXY[index+1][0]) + " " + (pieEdgeXY[index+1][1]) + " "+ " Z"},
500,mina.easeinout,function(){});
}
callback();
}).mousemove(function(event){
if(options.tooltip.show){
var coor = getMouseXY(event);
tooltip.show();
tooltip.css('position','absolute').css('top',(coor[1]-20)+'px').css('left',(coor[0]+20)+'px').css('color','#FCFCFC').css('font-size','12px').css('padding','10px');
tooltip.html(pieData[index]['name']+'<br>百分比:'+(perPiePercent[index].toFixed(4))*100+'%');
}
});
if(options.legend.origent == 'horizontal'){
if(!options.legend.data){
ulObj.append("<li style='margin-bottom:20px;'><span style='display:inline-block;width:"+0.05*circleCenterX+"px;height:"+0.05*circleCenterX+"px;background-color:"+color+"'></span> <sapn>"+pieData[index]['name']+"</span></li>");
divObj.append("<div style='width:33%;display:inline-block;'><span style='display:inline-block;width:"+0.05*circleCenterX+"px;height:"+0.05*circleCenterX+"px;background-color:"+color+"'></span> <sapn>"+pieData[index]['name']+"</span></div>");
}else{
for(var j=0;j<options.legend.data.length;j++){
if(options.legend.data[j] == pieData[index]['name']){
ulObj.append("<li style='margin-bottom:20px;'><span style='display:inline-block;width:"+0.05*circleCenterX+"px;height:"+0.05*circleCenterX+"px;background-color:"+color+"'></span> <sapn>"+pieData[index]['name']+"</span></li>");
divObj.append("<div style='width:33%;display:inline-block;'><span style='display:inline-block;width:"+0.05*circleCenterX+"px;height:"+0.05*circleCenterX+"px;background-color:"+color+"'></span> <sapn>"+pieData[index]['name']+"</span></div>");
}
}
}
}
}
//判断是否是大图或小图
function isLargeArc(percent) {
if(percent >= 0.5) {
return 1;
}
return 0;
}
//得到鼠标的坐标x,y
function getMouseXY(event) {
var x = event.pageX || (event.clientX
+ (document.documentElement.scrollLeft
|| document.body.scrollLeft
)
);
var y= event.pageY || (event.clientY
+ (document.documentElement.scrollTop
|| document.body.scrollTop
)
);
return [x, y];
}
}
options = {
id:'#svg',
legend:{
origent:'horizontal',
top:'50%',
right:'10%',
//data:['上海市','北京市']
},
series:{
radius:'30%',
center:['50%','30%'],
data:[{value:330,name:'上海市',sale:20000},
{value:260,name:'北京市',sale:30000},
{value:180,name:'天津市',sale:10000},
{value:100,name:'深圳市',sale:40000},
{value:120,name:'南京市',sale:60000}
]
},
tooltip:{
show:false
},
showNumber:3 //显示前面多少位数据的名字
};
drawPie(options,show);
function show(isClick){
console.log('1111');
}
</script>
</body>
</html>