javascript - 每个节点的 D3 unicode + d.name
问题描述
我使用 unicode fromfontawesome在我的节点中显示 SVG 图标。这些 unicode 直接存储在图形数据中。此外，我在文本标记期间添加了图形的名称。
.text(function (d) {
return d.icon + "\n\n" + d.name
})
我不喜欢当前的方法，因为 unicode 图标和节点名称几乎不可读。我可以删除 d.name 添加并增加字体大小，因此 unicode 可以正确填充节点，但这会拒绝正确标记节点的选项。
我的问题是，是否可以使用两次。append("text")或任何其他我可以用首选的unicode填充节点并正确标记节点的功能？
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Playground</title>
<!-- favcon -->
<link rel="icon" href="https://networkrepository.com/favicon.png">
<!-- call external d3.js framework -->
<script src="https://d3js.org/d3.v4.js"></script>
<!-- import multiselection framework -->
<script src="https://d3js.org/d3-selection-multi.v1.js"></script>
<!-- import "font awesome" stylesheet https://fontawesome.com/ -->
<script src="https://kit.fontawesome.com/39094309d6.js" crossorigin="anonymous"></script>
</head>
<style>
body {
overflow: hidden;
margin: 0px;
}
.canvas {
background-color: rgb(220, 220, 220);
}
.link {
stroke: rgb(0, 0, 0);
stroke-width: 1px;
}
circle {
background-color: whitesmoke;
}
</style>
<body>
<!-- create svg root element as a canvas -->
<svg id="svg"></svg>
<!-- call script where the main application is written -->
<script>
var graph = {
"nodes": [{
"id": 1,
"type": "company",
"name": "Company",
"context": [{
"name": "Company"
}],
"icon": "\uf1ad",
"parent": 1
},
{
"id": 2,
"type": "software",
"name": "Software_1",
"context": [
{ "name": "Company" },
{ "name": "Software_1" }
],
"icon": "\uf7b1",
"parent": 1
},
{
"id": 3,
"type": "software",
"name": "Software_2",
"context": [
{ "name": "Company" },
{ "name": "Software_2" }
],
"icon": "\uf78d",
"parent": 1
},
{
"id": 4,
"type": "software",
"name": "Software_3",
"context": [
{ "name": "Company" },
{ "name": "Software_3" }
],
"icon": "\ue084",
"parent": 2
},
{
"id": 5,
"type": "software",
"name": "Software_4",
"context": [
{ "name": "Company" },
{ "name": "Software_4" }
],
"icon": "\ue084",
"parent": 2
},
{
"id": 6,
"type": "software",
"name": "Software_5",
"context": [
{ "name": "Company" },
{ "name": "Software_3" },
{ "name": "Software_5" }
],
"icon": "\ue084",
"parent": 5
},
{
"id": 7,
"type": "software",
"name": "Software_6",
"context": [
{ "name": "Company" },
{ "name": "Software_3" },
{ "name": "Software_6" }
],
"icon": "\ue084",
"parent": 5
},
{
"id": 8,
"type": "software",
"name": "Software_7",
"context": [
{ "name": "Company" },
{ "name": "Software_4" },
{ "name": "Software_7" }
],
"icon": "\ue084",
"parent": 6
},
{
"id": 9,
"type": "software",
"name": "Software_8",
"context": [
{ "name": "Company" },
{ "name": "Software_4" },
{ "name": "Software_8" }
],
"icon": "\ue084",
"parent": 6
}
],
"links": [{
"id": 1,
"source": 2,
"target": 1,
"type": "uses"
},
{
"id": 2,
"source": 3,
"target": 1,
"type": "uses"
},
{
"id": 3,
"source": 4,
"target": 1,
"type": "uses"
},
{
"id": 4,
"source": 5,
"target": 1,
"type": "uses"
},
{
"id": 5,
"source": 6,
"target": 4,
"type": "uses"
},
{
"id": 6,
"source": 7,
"target": 4,
"type": "uses"
},
{
"id": 7,
"source": 8,
"target": 5,
"type": "uses"
},
{
"id": 8,
"source": 9,
"target": 5,
"type": "uses"
}
]
}
// declare initial variables
var svg = d3.select("svg")
width = window.innerWidth
height = window.innerHeight
node = null
link = null
// define cavnas area to draw everything
svg = d3.select("svg")
.attr("class", "canvas")
.attr("width", width)
.attr("height", height)
.call(d3.zoom().on("zoom", function () {
svg.attr("transform", d3.event.transform)
}))
.append("g")
// remove zoom on dblclick listener
d3.select("svg").on("dblclick.zoom", null)
// append markers to svg
svg.append('defs').append('marker')
.attrs({
'id': 'arrowhead',
'viewBox': '-0 -5 10 10',
'refX': 14,
'refY': 0,
'orient': 'auto',
'markerWidth': 30,
'markerHeight': 30,
'xoverflow': 'visible'
})
.append('svg:path')
.attr('d', 'M 0,-2 L 4 ,0 L 0,2')
.attr('fill', 'black')
.style('stroke', 'none');
var linksContainer = svg.append("g").attr("class", "linksContainer")
var nodesContainer = svg.append("g").attr("class", "nodesContainer")
// iniital force simulation
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function (d) {
return d.id;
}).distance(100))
.force("charge", d3.forceManyBody().strength(-400))
.force("center", d3.forceCenter(width / 2, height / 2))
.force("attraceForce", d3.forceManyBody().strength(70));
//create links
link = linksContainer.selectAll(".link")
.data(graph.links, d => d.id)
.enter()
.append("line")
.attr("class", "link")
.style("pointer-events", "none")
.attr('marker-end', 'url(#arrowhead)')
linkPaths = linksContainer.selectAll(".linkPath")
.data(graph.links, d => d.id)
.enter()
.append('path')
.style("pointer-events", "none")
.attrs({
'class': 'linkPath',
'id': function (d, i) {
return 'linkPath' + i
}
})
linkLabels = linksContainer.selectAll(".linkLabel")
.data(graph.links, d => d.id)
.enter()
.append('text')
.style("pointer-events", "none")
.attrs({
'class': 'linkLabel',
'id': function (d, i) {
return 'linkLabel' + i
},
'font-size': 12,
'fill': 'black'
})
linkLabels.append('textPath')
.attr('xlink:href', function (d, i) {
return '#linkPath' + i
})
.style("text-anchor", "middle")
.style("pointer-events", "none")
.attr("startOffset", "50%")
.text(function (d) {
return d.type
})
node = nodesContainer.selectAll(".node")
.data(graph.nodes, d => d.id)
.enter()
.append("g")
.attr("class", "node")
.attr("stroke", "white")
.attr("stroke-width", "2px")
.call(d3.drag()
.on("start", dragStarted)
.on("drag", dragged)
.on("end", dragEnded)
)
node.append("circle")
.attr("r", 30)
.style("fill", "whitesmoke")
node.append("text")
.style("class", "icon")
.attr("font-family", "FontAwesome")
.attr("dominant-baseline", "central")
.attr("text-anchor", "middle")
.attr("font-size", 10)
.attr("fill", "black")
.attr("stroke-width", "0px")
.attr("pointer-events", "none")
.text(function (d) {
return d.icon + "\n\n" + d.name
})
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation
.force("link")
.links(graph.links)
function ticked() {
// update link positions
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;
});
// update node positions
node
.attr("transform", function (d) {
return "translate(" + d.x + ", " + d.y + ")";
});
linkPaths.attr('d', function (d) {
return 'M ' + d.source.x + ' ' + d.source.y + ' L ' + d.target.x + ' ' + d.target.y;
});
linkLabels.attr('transform', function (d) {
if (d.target.x < d.source.x) {
var bbox = this.getBBox();
rx = bbox.x + bbox.width / 2;
ry = bbox.y + bbox.height / 2;
return 'rotate(180 ' + rx + ' ' + ry + ')';
} else {
return 'rotate(0)';
}
});
}
function dragStarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragEnded(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = undefined;
d.fy = undefined;
}
</script>
</body>
</html>解决方案
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