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javascript - d3js 使最后一个圆圈成为超链接

转载 作者:太空狗 更新时间:2023-10-29 14:55:24 26 4
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好的...我正在使用来自 http://bl.ocks.org/mbostock/7607535 的 Zoomable Circle Packing我打开了 flare.json 文件并开始弄乱它,并且能够成功地操纵它。它看起来像这样:

耀斑.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}
]

},

我现在想做的是尝试添加超链接。例如,我希望能够单击“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
但没有任何效果,只是再次缩小

这里是完整的 html 文件,flare.json 已经发布在这里(短部分)
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>

最佳答案

您的设置中的问题主要源于您对某些元素具有 pointer-events: none 的事实,例如叶子(最小的圆圈)。

如果您更正该问题并定义 click 事件,使其指向 url 而不是触发叶子的缩放事件,您将获得所需的行为。

我为你整理了一个 fiddle ,请看这里: http://jsfiddle.net/chroth/fkxcvtu9/3/

核心思想在这里(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();
}
}
}

在这种风格上的变化:

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

待办事项

如您所见,目前我正在拍摄一个警报。此外,您可能希望在未放大等情况下禁用某些点击事件。另外还要处理颜色。

此外,请注意您需要修复标签的可见性等。

但我把它留给你:)

希望对您有所帮助。

关于javascript - d3js 使最后一个圆圈成为超链接,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27514394/

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