Question

我正在尝试重现这个（包布局）：http://bl.ocks.org/mbostock/7607999并且没关系。

enter image description here

但是，当我悬停节点时，我想在每个链接上添加工具提示（工具提示将解释为什么项目链接在一起）。我完全不知道如何做到这一点。我已经尝试了各种代码，但由于我不太了解它，所以很难。任何的想法？

我希望在每个链接上显示工具提示（例如，在中间）（但我担心与突出显示的链接相关的工具提示不会太明显/清晰），或者要么聚合每个工具提示的文本突出显示在图表下方某处的div中的链接。

这是我的代码：

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.node {
  font: 300 11px "Helvetica Neue", Helvetica, Arial, sans-serif;
  fill: #bbb;
}

.node:hover {
  fill: #000;
}

.link {
  stroke: steelblue;
  stroke-opacity: .4;
  fill: none;
  pointer-events: none;
}

.node:hover,
.node--source,
.node--target {
  font-weight: 700;
}

.node--source {
  fill: #2ca02c;
}

.node--target {
  fill: #d62728;
}

.link--source,
.link--target {
  stroke-opacity: 1;
  stroke-width: 2px;
}

.link--source {
  stroke: #d62728;
}

.link--target {
  stroke: #2ca02c;
}
/* test_tooltip addition 
div.tooltip {   
  position: absolute;           
  text-align: center;           
  width: 60px;                  
  height: 28px;                 
  padding: 2px;             
  font: 12px sans-serif;        
  background: lightsteelblue;   
  border: 0px;      
  border-radius: 8px;           
  pointer-events: none;         
}
*/
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<div>
<script>

// test_tooltip addition
var tooltip = d3.select("body")
    .append("div")
    .attr("class", "tooltip")
  .attr("x", 200)
  .attr("y", 200)
  .attr("width", 400)
  .attr("height", 100)
  .attr("fill", "aliceblue")
    .style("position", "absolute")
    .style("z-index", "10")
    .style("opacity", 0)
    //.style("visibility", "hidden")
    .text("a simple tooltip");
// end of addition

var diameter = 480, // diameter = 960 ou 480
    radius = diameter / 2,
    innerRadius = radius - 120;

var cluster = d3.layout.cluster()
    .size([360, innerRadius])
    .sort(null)
    .value(function(d) { return d.size; });

var bundle = d3.layout.bundle();

var line = d3.svg.line.radial()
    .interpolate("bundle")
    .tension(.85)
    .radius(function(d) { return -d.y; })
    .angle(function(d) { return d.x / 180 * Math.PI; });

var svg = d3.select("body").append("svg")
    .attr("width", diameter)
    .attr("height", diameter)
  .append("g")
    .attr("transform", "translate(" + radius + "," + radius + ")");

var link = svg.append("g").selectAll(".link"),
    node = svg.append("g").selectAll(".node");

d3.json("test.json", function(error, classes) {
  var nodes = cluster.nodes(packageHierarchy(classes)),
      links = packageLinks(nodes); // links = packageImports(nodes);

  link = link
      .data(bundle(links))
    .enter().append("path")
      .each(function(d) { d.source = d[0], d.target = d[d.length - 1]; })
      .attr("class", "link")
      .attr("d", line); 
      // .attr("d", line); //original
      /*
      // test_tooltip addition
      .attr("d", line)
      .on("mouseover", function(d) {
          div.transition()      
              .duration(200)        
              .style("opacity", .9);        
          div   .html(d.RG)
              .style("left", (d3.event.pageX) + "px")       
              .style("top", (d3.event.pageY - 28) + "px");  
          })        
      .on("mouseout", function(d) {     
          div.transition()      
              .duration(500)        
              .style("opacity", 0); 
      });
      // test_tooltip addition
      */

  node = node
      .data(nodes.filter(function(n) { return !n.children; }))
  // skip if URL not desired
    .enter().append('a')
    .attr("xlink:href", function(d){return d.url;})
    .append("text")
  // skip until there
  //  .enter().append("text")
      .attr("class", "node")
      .attr("dy", ".31em")
      // put the parents on the left rather than on the right
      .attr("transform", function(d) { return "rotate(" + (d.x - 90) + ")translate(" + ((-d.y) - 8) + ",0)" + (d.x < 180 ? "" : "rotate(180)"); })
      //.attr("transform", function(d) { return "rotate(" + (d.x - 90) + ")translate(" + (d.y + 8) + ",0)" + (d.x < 180 ? "" : "rotate(180)"); })
      .style("text-anchor", function(d) { return d.x < 180 ? "end" : "start"; })
      .text(function(d) { return d.key /*+ " truc"; */})
      .on("mouseover", mouseovered)
      .on("mouseout", mouseouted);
});

function mouseovered(d) {
  node
      .each(function(n) { n.target = n.source = false; });

  link
      .classed("link--target", function(l) { if (l.target === d) return l.source.source = true; })
      .classed("link--source", function(l) { if (l.source === d) return l.target.target = true; })
    .filter(function(l) { return l.target === d || l.source === d; })
      .each(function() { this.parentNode.appendChild(this); });

  node
      .classed("node--target", function(n) { return n.target; })
      .classed("node--source", function(n) { return n.source; });
}

function mouseouted(d) {
  link
      .classed("link--target", false)
      .classed("link--source", false);

  node
      .classed("node--target", false)
      .classed("node--source", false);
}

d3.select(self.frameElement).style("height", diameter + "px");

// Lazily construct the package hierarchy from class names.
function packageHierarchy(classes) {
  var map = {};

  function find(name, data) {
    var node = map[name], i;
    if (!node) {
      node = map[name] = data || {name: name, children: []};
      if (name.length) {
        node.parent = find(name.substring(0, i = name.lastIndexOf(".")));
        node.parent.children.push(node);
        node.key = name.substring(i + 1);
      }
    }
    return node;
  }

  classes.forEach(function(d) {
    find(d.name, d);
  });

  return map[""];
}

// Return a list of imports/links for the given array of nodes.
function packageLinks(nodes) { //function packageImports(nodes) {
  var map = {},
      links = []; // imports = [];

  // Compute a map from name to node.
  nodes.forEach(function(d) {
    map[d.name] = d;
  });

  // For each import/link, construct a link from the source to target node.
  nodes.forEach(function(d) {
    if (d.links) d.links.forEach(function(i) { //if (d.imports) d.imports.forEach(function(i) {
      links.push({source: map[d.name], target: map[i]}); //imports.push({source: map[d.name], target: map[i]});
    });
  });

  return links; //return imports;
}

/*
// test_tooltip addition
d3.select("body")
    .append("svg:circle")
    .attr("stroke", "black")
    .attr("fill", "aliceblue")
    .attr("r", 50)
    .attr("cx", 52)
    .attr("cy", 52)
    .on("mouseover", function(){return tooltip.style("visibility", "visible");})
    .on("mousemove", function(){return tooltip.style("top", (event.pageY-10)+"px").style("left",(event.pageX+10)+"px");})
    .on("mouseout", function(){return tooltip.style("visibility", "hidden");});
// test_tooltip addition
*/
</script>
</div>

Answer 1

您的工具提示代码将出现在第二位...首先您必须检查至少您的链接是否处理鼠标事件

挑衅不是为什么？

因为这部分在css

.link {
  stroke: steelblue;
  stroke-opacity: .4;
  fill: none;
  pointer-events: none;    <====
}

删除指针事件行，然后检查mouseover / mouseout事件的工具提示代码，它将起作用...

<强>供参考：有理由在bundle布局中将指针事件设置为none ... 因为在中间将有一个圆圈处理拖动，它将允许旋转此图...如果你删除＆＃34;指针事件：无＆＃34;比你在链接上的事件开始听，它会搞乱那个中间圈的拖动事件..

所以要小心这个＆＃34;指针 - 事件：无＆＃34;如果你不具备旋转功能而不是它可以，但你需要同时进行两个...你需要使用其他选项来管理它，例如提供按钮，它将设置＆＃34;指针事件：无＆＃34;因为当你旋转并再次完成一次旋转时，删除指针事件：节点或应用指针事件：所有这样你链接工具提示将工作..

希望这有帮助

无法在捆绑布局上显示工具提示

1 个答案: