我从Mbostock示例修改了一个Orbit Layout ... 但我在两行中打破节点内的文本时遇到了问题...
我已经编写了一个包装函数......但似乎它不起作用....
我需要的只是圆圈内的文字应该有两行...... 请建议.....
<html>
<head>
<title>Orbit Layout Modes</title>
<meta charset="utf-8" />
</head>
<style>
#viz, svg {
width: 1000px;
height: 1000px;
padding-left:50px;
}
text {
pointer-events: none;
}
#buttons {
position: absolute;
top: 0;
left: 0;
}
circle.ring {
fill: none;
stroke: black;
stroke-width: 2.5px;
stroke-opacity: 0.5;
padding-left: 70px;
}
</style>
<script>
function makeViz() {
d3.json("/NewFolder1/solarsystem.txt", function (data) { drawOrbit(data) });
}
function drawOrbit(_data) {
orbitScale = d3.scale.linear()
.domain([0.5, 3])
.range([2.8, 0.5])
.clamp(false);
radiusScale = d3.scale.linear()
.domain([210.64, 2500, 10000, 71492.68,8000])
.range([2+2, 4+2, 8+2, 16+2,32+2]);
var planetColors = { "Application Management": "#004A80", "Designer Tools": "#009BC9", "Application Assembler": "#00CE7D", "Common Services": "yellow" }
orbit = d3.layout.orbit()
.size([350, 350])
.children(function (d) { return d.values })
.revolution(function (d) { return 1 / d.orbital_period })
.orbitSize(function (d) { return orbitScale(d.depth) })
.speed(.5)
.mode(" ")
.nodes(_data);
d3.select("svg")
.append("g")
.attr("class", "viz")
.attr("transform", "translate(50,50)")
.selectAll("g.node").data(orbit.nodes())
.enter()
.append("g")
.attr("class", "node")
.attr("transform", function (d) { return "translate(" + d.x + "," + d.y + ")" })
.on("mouseover", nodeOver)
.on("mouseout", nodeOut)
d3.selectAll("g.node")
.append("circle")
.attr("r", function (d) { return d.radius ? radiusScale(d.radius) : 70 })
.style("fill", function (d) { return d.depth == 0 ? "#21E2EA" : d.depth == 1 ? planetColors[d.key] : "blue" });
d3.selectAll("g.node").filter(function (d) { return d.depth == 0 })
.append("text")
.attr("x", -55)
.attr("y", 10)
//.style("text-anchor", "middle")
.text("PLANET TORUS")
.style("fill", "White")
.call(wrap, 100);
d3.selectAll("g.node").filter(function (d) { return d.depth == 1 })
.append("text")
.text(function (d) { return d.key })
.attr("y", 30)
.style("text-anchor", "middle")
.style("fill", function (d) { return planetColors[d.key] });
d3.select("g.viz")
.selectAll("circle.ring")
.data(orbit.orbitalRings())
.enter()
.insert("circle", "g")
.attr("class", "ring")
.attr("r", function (d) { return d.r })
.attr("cx", function (d) { return d.x })
.attr("cy", function (d) { return d.y })
//d3.select("#buttons").append("button").html("solar").on("click", function () { newMode("solar") })
//d3.select("#buttons").append("button").html("flat").on("click", function () { newMode("flat") })
//d3.select("#buttons").append("button").html("atomic").on("click", function () { newMode("atomic") })
//d3.select("#buttons").append("button").html("custom").on("click", function () { newMode([4, 4]) })
orbit.on("tick", function () {
d3.selectAll("g.node")
.attr("transform", function (d) { return "translate(" + d.x + "," + d.y + ")" });
d3.selectAll("circle.ring")
.attr("cx", function (d) { return d.x })
.attr("cy", function (d) { return d.y });
});
orbit.start();
function wrap(text, width)
{
text.each(function ()
{
var text = d3.select(this),
words = text.text().split(/\s+/).reverse(),
word,
line = [],
lineNumber = 1,
lineHeight = 2.1, // ems
y = text.attr("y"),
dy = parseFloat(text.attr("dy")),
tspan = text.text(null).append("tspan").attr("x", 0).attr("y", y).attr("dy", dy + "em");
while (word = words.pop())
{
line.push(word);
tspan.text(line.join(" "));
if (tspan.node().getComputedTextLength() > width)
{
line.pop();
tspan.text(line.join(" "));
line = [word];
tspan = text.append("tspan").attr("x", 0).attr("y", y).attr("dy", ++lineNumber * lineHeight + dy + "em").text(word);
}
}
});
}
function type(d) {
d.value = +d.value;
return d;
}
function newMode(_mode)
{
orbit.mode(_mode)
.nodes(_data);
d3.select("g.viz")
.selectAll("circle.ring")
.data(orbit.orbitalRings())
.exit()
.transition()
.duration(500)
.style("stroke-opacity", 0)
.style("stroke-width", 3)
.remove();
d3.select("g.viz")
.selectAll("circle.ring")
.data(orbit.orbitalRings())
.enter()
.insert("circle", "g")
.attr("class", "ring");
d3.selectAll("circle.ring")
.attr("r", function (d) { return d.r })
.attr("cx", function (d) { return d.x })
.attr("cy", function (d) { return d.y });
}
function nodeOver(d) {
orbit.stop();
if (d.depth == 2) {
d3.select(this).append("text").text(d.label || d.key).style("text-anchor", "middle")
.attr("y", 15)
.attr("class", "moon");
}
d3.select(this).select("circle").style("stroke", "white ").style("stroke-width", 3);
}
function nodeOut() {
orbit.start();
d3.selectAll("text.moon").remove();
d3.selectAll("g.node > circle").style("stroke", "none").style("stroke-width", 0);
}
}
</script>
<body onload="makeViz()">
<div id="viz">
<svg></svg><div id="buttons"></div>
</div>
<footer>
<script src="../D3/d3.min.js" charset="utf-8" type="text/javascript"></script>
<script src="d3.layout.orbit.js" charset="utf-8" type="text/javascript"></script>
</footer>
</body>
</html>
答案 0 :(得分：1)
这里有一个来自你的wrap函数的示例代码。我无法理解dy的使用，所以我让它与'＆＃39; y＆＃39;每个tspan元素的属性。看看：
<强> HTML
</div>
JS
var data = ["lorem ipsem","dolor sit","quo ubique"]
var svg = d3.select("div.svg").append("svg")
.append("g")
.attr("class","node").attr("transform", function (d) { return "translate(" + 10 + "," + 10 + ")" });
svg.selectAll("g.node")
.data(data)
.enter()
.append("text")
.attr("y", 0)
.attr("x", function(d,i){return 100*i;})
.text(function(d){return d;})
.call(wrap, 10);
function wrap(text, width)
{
text.each(function ()
{
var text = d3.select(this),
words = text.text().split(/\s+/).reverse(),
word,
line = [],
lineNumber = 1,
lineHeight = 2,
x = text.attr("x"),
y = text.attr("y");
tspan = text.text(null).append("tspan").attr("x", x).attr("y", y);
while (word = words.pop())
{
line.push(word);
tspan.text(line.join(" "));
if (tspan.node().getComputedTextLength() > width)
{
line.pop();
tspan.text(line.join(" "));
line = [word];
tspan = text.append("tspan").attr("x", x).attr("y", ++lineNumber * lineHeight + y).text(word);
}
}
});
}
<强> DEMO