d3/test.html at master · EdwardSYT/d3 · GitHub

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<!DOCTYPE html>
<html>
	<head>
		<title>关系图</title>
		<script src="jquery-1.11.2.min.js"></script>
		<script type="text/javascript" src="d3/d3.v3.min.js"></script>
	</head>
	<style>
		.node circle {
		  cursor: pointer;
		  stroke: #3182bd;
		  stroke-width: 0.5px;
		  opacity:0.7;
		}

		.node text {
		  font: 12px sans-serif;
		  pointer-events: none;
		  text-anchor: middle;
		  <!--font-family:STCaiyun;.attr("opacity", "0.5")
		  font-size:120;-->
		}

		line.link {
		  fill: none;
		  stroke: #EEEEEE;
		}
	</style>
	<body>输入框
		<div id="history">查看历史：</div>
		<div id="a" style="width:740px;height:740px;float:left;border:solid 1px #a0ffff;"></div>
	</body>
	<script type="text/javascript">
	function jdtd3(){
		$("#a").empty();
		var width = 740,
			height = 740,
			dragEvent = 0,
			root;
		var force = d3.layout.force()
			.linkDistance(80)
			.charge(-120)
			.gravity(.05)
			.size([width, height])
			.on("tick", tick);
		//$("#a").empty();
		var svg = d3.select("#a").append("svg")
			.attr("width", width)
			.attr("height", height)
			.call( // <-A
                d3.behavior.zoom() // <-B
                    .scaleExtent([-1, 10]) // <-C
                    .on("zoom", zoom) // <-D
            ).append("g");
		var link = svg.selectAll(".link"),//连接线
			node = svg.selectAll(".node");//节点
			//image1 = svg.selectAll(".image");//图片
		d3.json("data/graph22.json", function(error, json) {
		  root = json;
		  update();
		});
		function zoom() {
			if(dragEvent!=2){
				svg.attr("transform", "translate("
		            + d3.event.translate
		            + ")scale(" + d3.event.scale + ")");
			}
	    }

		function update() {
		  var nodes = flatten(root),
			  links = d3.layout.tree().links(nodes);

		  // Restart the force layout.
		  force
			  .nodes(nodes)
			  .links(links)
			  .start();

		  // Update links.
		  link = link.data(links, function(d) { return d.target.id; });

		  link.exit().remove();

		  link.enter().insert("line", ".node")
			  .attr("class", "link")
			  .style("stroke-width",function(d){
					//if(d.source.num==20){
						//alert(d.source.num);
						return d.target.num+2.3;
					//}else{
						//return 2.3;
					//}
			  });//stroke-width:20 大小

		  // Update nodes.
		  node = node.data(nodes, function(d) { return d.id; });

		  node.exit().remove();

		  var drag = force.drag()
					.on("dragstart",function(d,i){//拖拽开始
						dragEvent=1;
						//$("#history").append(dragEvent);
						d.fixed = true;    //拖拽开始后设定被拖拽对象为固定
					})
					.on("dragend",function(d,i){//拖拽结束
						dragEvent=0;
						//$("#history").append(dragEvent);
					})
					.on("drag",function(d,i){//拖拽
						dragEvent=2;
						//$("#history").append(dragEvent);
					});
		  var nodeEnter = node.enter().append("g")
			  .attr("class", "node")
			  .on("click", click)
			  .call(drag);
		  nodeEnter.append("circle")
			  .attr("r", function(d) { return Math.sqrt(d.size) / 3 || 13.5; });
		  nodeEnter.append("text")
			  .attr("dy", ".35em")
			  .text(function(d) { return d.name; }).style("fill", textColor).style("font-weight",fontWeight);//粗细 font-weight="bold"
		  //11解答问题数图片
		  nodeEnter.append("image")
			.attr("width",15)
			.attr("height",15)
			.attr("transform", function(d) {
				return "translate(-30,8)";
			})
			.attr("xlink:href",function(d){
				if(typeof(d.children)=="undefined"&&typeof(d._children)=="undefined"){
					return "images/gif03.gif";
				}
			 });
		  //11解答问题数
		  nodeEnter.append("text")
			  .attr("dy", ".35em")
			  .style("fill", "#436EEE")
			  .attr("transform", function(d) {
					return "translate(-5,17)";
			  })
			  .text(function(d) { return d.size; });
		  //22点赞数图片
		  nodeEnter.append("image")
			.attr("width",15)
			.attr("height",15)
			.attr("transform", function(d) {
				return "translate(10,9)";
			})
			.attr("xlink:href",function(d){
				if(typeof(d.children)=="undefined"&&typeof(d._children)=="undefined"){
					return "images/gif07.gif";
				}
			 });
		  //22点赞数
		  nodeEnter.append("text")
			  .attr("dy", ".35em")
			  .style("fill", "green")
			  .attr("transform", function(d) {
					return "translate(36,17)";
			  })
			  .text(function(d) { return d.size; });

		  node.select("circle")
			  .style("fill", color);
		}
		//拖动更改坐标位置
		function tick() {
		  link.attr("x1", function(d) { return d.source.x; })
			  .attr("y1", function(d) { return d.source.y; })
			  .attr("x2", function(d) { return d.target.x; })
			  .attr("y2", function(d) { return d.target.y; });
		  node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
		}
		//主节点判别 修改字体为粗体
		function fontWeight(d){
			if(d.name.indexOf("医院") > 0 ){
				return "bold";
			}
		}
		//主节点判别 修改字体颜色
		function textColor(d){
			if(d.name.indexOf("医院") > 0 ){
				return "orange";
			}
		}

		//颜色变更
		function color(d) {
			if(d.name.indexOf("医院") > 0 ){
				return "red";
			}
		  return d._children ? "yellow" // collapsed package
			  : d.children ? "#436EEE" // expanded package
			  : "#0099CC"; // leaf node
		}

		// 点击事件
		function click(d) {
		  if(typeof(d.children)=="undefined"&&typeof(d._children)=="undefined"){
			overclick(d);
		  }else{
			  if (d3.event.defaultPrevented) return; // ignore drag
			  if (d.children) {
				d._children = d.children;
				d.children = null;
			  } else {
				d.children = d._children;
				d._children = null;
			  }
		  }
		  update();
		}
		//点击事件 最后一层
		function overclick(d){
			//alert(d.name);
			$("#history").append("<a href='#' onclick='jdtd3();' style='text-decoration:none;'>"+d.name+"</a>>");

			jdtd3();
		}

		// Returns a list of all nodes under the root.
		function flatten(root) {
		  var nodes = [], i = 0;
		  function recurse(node) {
			if (node.children) node.children.forEach(recurse);
			if (!node.id) node.id = ++i;
			nodes.push(node);
		  }
		  recurse(root);
		  return nodes;
		}
	}
	jdtd3();
	</script>
</html>