d3js使最后一个圆圈成为超链接

时间:2014-12-16 21:38:22

标签: javascript html svg d3.js circle-pack

好的......我正在使用http://bl.ocks.org/mbostock/7607535的Zoomable Circle Packing 我打开了flare.json文件并开始搞乱它并且能够成功地操作它。它看起来像这样:

flare.json

{
  "name": "flare",
"children": [
{
"name": "Kommunikation und Umwelt",
"children": [

{
 "name": "Courses",
 "children": [
  {
   "name": "AO-Psy.",
   "children": [
    {"name": "Prof. A", "size": 5731,"url":"google.com"},
    {"name": "Prof. B", "size": 5731},
    {"name": "Prof. C", "size": 5731}
   ]
  },
  {
   "name": "E&E",
   "children": [
    {"name": "Prof. D", "size": 5731},
    {"name": "Prof. E", "size": 5731},
    {"name": "Prof. F", "size": 5731},
    {"name": "Prof. G", "size": 5731},
    {"name": "Prof. H", "size": 5731}
   ]
  },
  {
   "name": "IBSS",
   "children": [
    {"name": "Prof. I", "size": 5731},
    {"name": "Prof. J", "size": 5731},
    {"name": "Prof. K", "size": 5731}
   ]
  },
  {"name": "", "size": 0},
  {
   "name": "E-Gov",
   "children": [
    {"name": "Prof. L", "size": 5731},
    {"name": "Prof. M", "size": 5731},
    {"name": "Prof. N", "size": 5731}
   ]
  },
  {
   "name": "Muki",
   "children": [
    {"name": "Prof. O", "size": 5731},
    {"name": "Prof. P", "size": 5731},
    {"name": "Prof. Q", "size": 5731},
    {"name": "Prof. V", "size": 5731}
   ]
  },
  {"name": "Schedule", "size": 5731},
  {"name": "News", "size": 5731},
  {"name": "Events", "size": 5731},
  {"name": "Search", "size": 5731},
  {"name": "", "size": 0}
 ]
},
{"name": "", "size": 0}
]

},

我现在要做的是尝试添加超链接。例如,我希望能够点击“ProfA”并转到我将创建的另一个html页面。我可以对flare.json进行修改吗?

我已经找到了一些帖子Post1 Post2 Post3
但没有任何工作只是再缩小

这里完整的html文件,flare.json已经发布在这里(短片)
zoom.html:

<html xmlns:xlink="http://www.w3.org/1999/xlink">
<meta charset="utf-8">
<style>

.node {
cursor: pointer;
}

.node:hover {
stroke: #000;
stroke-width: 1.5px;
}

.node--leaf {
fill: #14DCD2;
}

.label {
 font: 20px "Helvetica Neue", Helvetica, Arial, sans-serif;
 text-anchor: middle;
 text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, -1px 0 0 #fff, 0 -1px 0 #fff;
 }

 .label,
 .node--root,
 .node--leaf {
 pointer-events: none;
 }

 </style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
 <script>


var margin = 600,
diameter = 1920;

var color = d3.scale.linear()
.domain([-1, 5])
.range(["hsl(152,80%,80%)", "hsl(228,30%,40%)"])
.interpolate(d3.interpolateHcl);

var pack = d3.layout.pack()
.padding(2)
.size([diameter - margin, diameter - margin])
.value(function(d) { return d.size; })

var svg = d3.select("body").append("svg")
.attr("width", diameter)
.attr("height", diameter)
.append("g")
.attr("transform", "translate(" + diameter / 2 + "," + diameter / 2 + ")");

d3.json("flare.json", function(error, root) {
if (error) return console.error(error);

var focus = root,
  nodes = pack.nodes(root),
  view;

var circle = svg.selectAll("circle")
  .data(nodes)
.enter().append("circle")
  .attr("class", function(d) { return d.parent ? d.children ? "node" : "node node--leaf" : "node node--root"; })
  .style("fill", function(d) { return d.children ? color(d.depth) : null; })
  .on("click", function(d) { if (focus !== d) zoom(d), d3.event.stopPropagation(); })



  var text = svg.selectAll("text")
  .data(nodes)
 .enter().append("text")
  .attr("class", "label")
  .style("fill-opacity", function(d) { return d.parent === root ? 1 : 0; })
  .style("display", function(d) { return d.parent === root ? null : "none"; })
  .text(function(d) { return d.name; })
  //.on('click', function(d, i) {window.location.href = d.url;});

  var node = svg.selectAll("circle,text")

  node.each(function(d){
  var thisNode = d3.select(this);
  if (!d.children) {
    thisNode.append("a")
        .attr("xlink:href", function(d) { return d.url; })
        .append("text")
            .attr("dx", 8)
            .attr("dy", 3)
            .attr("text-anchor", "start")
            .text(function(d) { return d.name; })
            ;
   } else {
    thisNode.append("text")
        .attr("dx", -8)
        .attr("dy", 3)
        .attr("text-anchor", "end")
        .text(function(d) { return d.name; });      
     }

    });




   d3.select("body")
  .style("background", color(-1))
  .on("dblclick", function() { zoom(root); });

   zoomTo([root.x, root.y, root.r * 2 + margin]);

   function zoom(d) {
   var focus0 = focus; focus = d;
   //.attr("xlink:href", url);
   //.on('click', function(d, i) {window.location.href = d.url;});

   var transition = d3.transition()
    .duration(d3.event.altKey ? 7500 : 750)
    .tween("zoom", function(d) {
      var i = d3.interpolateZoom(view, [focus.x, focus.y, focus.r * 4 + margin]);
      return function(t) { zoomTo(i(t)); };
    });

    transition.selectAll("text")
   .filter(function(d) { return d.parent === focus || this.style.display === "inline"; })
    .style("fill-opacity", function(d) { return d.parent === focus ? 1 : 0; })
    .each("start", function(d) { if (d.parent === focus) this.style.display = "inline"; })
    .each("end", function(d) { if (d.parent !== focus) this.style.display = "none"; });

    }

    function zoomTo(v) {
    var k = diameter / v[2]; view = v;
    node.attr("transform", function(d) { return "translate(" + (d.x - v[0]) * k + "," + (d.y - v[1]) * k + ")"; });
    circle.attr("r", function(d) { return d.r * k; });

    }

     });

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

    </script>
    </html>

2 个答案:

答案 0 :(得分:7)

您的设置中的问题主要源于您对某些元素pointer-events: none的事实,例如树叶(最小圆圈)。

如果您更正并定义click事件,使其指向网址而不是触发树叶的缩放事件,则会获得所需的行为。

我为你准备了一个小小提琴,请看这里: http://jsfiddle.net/chroth/fkxcvtu9/3/

这个想法的核心在于(click函数):

function clickFct(d,i) {
if (d3.select(this).classed("node--leaf")) {
    alert(d.url); //open URL here
} else {
    if (focus !== d) 
    {
        zoom(d); 
        d3.event.stopPropagation();
    }
}
}

并且在风格的这种变化中:

 .node--root,
 .node--leaf {
   pointer-events: all;
 }

<强>待办事项

如您所见,目前我只拍摄alert。此外,您可能希望在未放大等时禁用某些点击事件。再加上颜色。

另外,请注意您需要修复标签的可见性等。

但我把它留给你:)

希望有所帮助。

答案 1 :(得分:1)

谢谢Pinguin。它对我来说是正常的,但我不确定函数中i参数的用途。这是一个小修改,可以防止未定义的URL。

function onClickLeaf(d) 
{
    if (d3.select(this).classed("node--leaf")) 
    {
        if(d.url !== undefined)
        {
            alert(d.url); //open URL here
        }
    } 
    else 
    {
        if (focus !== d) 
        {
            zoom(d); 
            d3.event.stopPropagation();
        }
    }
}

由于这一特定的代码行,我的投票结果非常好,并且为了简单起见将其包装成函数。

if (d3.select(this).classed("node--leaf"))