首先，下载这段js文件，命名为esri.symbol.MultiLineTextSymbol.js
require(["esri/layers/LabelLayer"], function(ll)
{
if( typeof esri.layers.LabelLayer.prototype._addLabel == 'function' )
{
esri.layers.LabelLayer.prototype._addLabel2 = esri.layers.LabelLayer.prototype._addLabel;
esri.layers.LabelLayer.prototype._addLabel = function(a,b,c,e,g,k,m)
{
// replace
by <br>
a = a.replace(/
/g, "<br />");
this._addLabel2(a,b,c,e,g,k,m);
}
}
});
require(["esri/symbols/TextSymbol", "dojox/gfx/svg"], function(ts, svg)
{
if( typeof dojox.gfx.svg.Text.prototype.setShape == 'function' )
{
dojox.gfx.svg.Text.prototype.setShape = function(p)
{
this.shape = dojox.gfx.makeParameters(this.shape, p);
this.bbox = null;
var r = this.rawNode, s = this.shape;
r.setAttribute("x", s.x);
r.setAttribute("y", s.y);
r.setAttribute("text-anchor", s.align);
r.setAttribute("text-decoration", s.decoration);
r.setAttribute("rotate", s.rotated ? 90 : 0);
r.setAttribute("kerning", s.kerning ? "auto" : 0);
r.setAttribute("text-rendering", "optimizeLegibility");
while(r.firstChild)
r.removeChild(r.firstChild);
if(s.text)
{
var texts = s.text.replace(/<brs*/?>/ig, "
").split("
");
var lineHeight = 1.1 * parseInt(document.defaultView.getComputedStyle(r, "").getPropertyValue("font-size"), 10);
if( isNaN(lineHeight) || !isFinite(lineHeight) )
lineHeight = 15;
for(var i = 0, n = texts.length; i < n; i++)
{
var tspan = (document.createElementNS ? document.createElementNS(dojox.gfx.svg.xmlns.svg, "tspan") : document.createElement("tspan"));
tspan.setAttribute("dy", i ? lineHeight : -(texts.length-1)*lineHeight/2);
tspan.setAttribute("x", s.x);
tspan.appendChild((dojox.gfx.useSvgWeb ? document.createTextNode(texts[i], true) : document.createTextNode(texts[i])));
r.appendChild(tspan);
}
}
return this;
}
}
});
然后在html中这样引用，就可以使用
来换行了
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
<title>Simple Map</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.13/esri/css/esri.css">
<style>
html, body, #map {
height: 100%;
100%;
margin: 0;
padding: 0;
}
body {
background-color: #FFF;
overflow: hidden;
font-family: "Trebuchet MS";
}
</style>
<script src="https://js.arcgis.com/3.13/"></script>
<script src="./esri.symbol.MultiLineTextSymbol.js"></script>
<script>
var map;
require(["esri/map",
"esri/symbols/TextSymbol",
"esri/graphic",
"esri/geometry/Point",
"dojo/domReady!"], function (Map, TextSymbol, Graphic, Point) {
map = newMap("map", {basemap: "topo", center: [0, 0], zoom: 4, sliderStyle: "small"});
map.on("load", function () {
map.graphics.add(newGraphic(newPoint(0, 0), newTextSymbol("Multi-Line
Text"), {}));
});
});
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>