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Created December 20, 2011 21:53
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masking with external svg elements
<html>
<head>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.6.0"></script>
</head>
<body>
<svg>
<defs>
<mask id="rekt">
<g id="rrr">
<rect width=50 height=50 fill="#ccc"></rect>
<rect x=50 y=50 width=50 height=50 fill="#ccc"></rect>
</g>
</mask>
</defs>
<rect width="100%" height="100%" fill="#cccccc"></rect>
<rect mask="url(#rekt)" width=100 height=100 x=0 y=0 fill="#00f"transform="translate(20,20)"></rect>
<rect mask="url(#rekt)" width=100 height=100 x=0 y=0 fill="#00f"transform="translate(20,230)rotate(-90)"></rect>
<rect mask="url(#rekt)" width=100 height=100 x=0 y=0 fill="#00f"transform="translate(110,120)rotate(-90)"></rect>
<rect mask="url(#rekt)" width=100 height=100 x=0 y=0 fill="#00f"transform="translate(110,130)"></rect>
<!--
you can reuse the masked out rect
<rect id="maniconinstance" mask="url(#maniconmask)" width=100 height=100 x=0 y=0 fill="#f00"></rect>
<rect id="womaniconinstance" mask="url(#womaniconmask)" width=100 height=100 x=0 y=0 fill="#f00"></rect>
<use xlink:href="#maniconinstance" transform="translate(110,0)" width=100 height=100></use>
<use xlink:href="#womaniconinstance" transform="translate(160,0)" width=100 height=100></use>
or you can directly use the elements (as long as you are referencing the proper id)
<use xlink:href="#manicon" transform="translate(200,200)scale(.5,.5)"></use>
-->
</svg>
<script type="text/javascript">
//Make a mask from an external svg element, then mask a rectangle with it
function make_icon(url, name, color)
{
defs = d3.select("defs")
d3.html(url, function(data) {
console.log("data", data)
//get a selection of the image so we can pull out the icon
xml = d3.select(data)
console.log("xml", xml.select("#icon"), xml.select("#icon").node())
icon = document.importNode(xml.select("#icon").node(), true)
console.log("icon", icon)
//we make a mask object
mask = defs.append("svg:mask")
.attr("id", name + "iconmask")
icon.id = name + "icon"
//this is where the icon gets inserted into the DOM
mask.node().appendChild(icon)
console.log("mask", mask)
})
//masked rectangle
defs.append("svg:rect")
.attr("id", name + "iconinstance")
.attr("width", 50)
.attr("height", 100)
.attr("mask", "url(#" + name + "iconmask)")
.attr("fill", color)
}
//add a row of use elements which point to our masked element
function make_row(name, icon, n, x, y)
{
d3.select("svg").selectAll("use." + name)
.data(d3.range(n))
.enter()
.append("svg:use")
.attr("class", name)
.attr("xlink:href", "#" + icon + "iconinstance")
.attr("transform", function(d,i) {
return "translate(" + [x + 50 * i, y] + ")"
})
}
make_icon("man.svg", "man", "red")
make_icon("woman.svg", "woman", "white")
make_row("a", "man", 14, 220, 20)
make_row("b", "woman", 14, 220, 130)
make_row("c", "man", 18, 20, 240)
make_row("d", "woman", 18, 20, 350)
</script>
</body>
</html>
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<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 14.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 43363) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg version="1.0" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="37.207px" height="100px" viewBox="0 0 37.207 100" enable-background="new 0 0 37.207 100" xml:space="preserve">
<g id="icon">
<circle fill="#fff" cx="18.118" cy="8.159" r="8.159"></circle>
<path fill="#fff" id="path" d="M8.472,95.426c0,2.524,2.05,4.574,4.574,4.574c2.529,0,4.576-2.05,4.576-4.574l0.004-38.374h2.037L19.65,95.426
c0,2.524,2.048,4.574,4.574,4.574s4.573-2.05,4.573-4.574l0.02-66.158h2.006v24.38c0,4.905,6.398,4.905,6.384,0v-24.9
c0-5.418-3.184-10.728-9.523-10.728L9.396,18.012C3.619,18.012,0,22.722,0,28.599v25.05c0,4.869,6.433,4.869,6.433,0v-24.38h2.048
L8.472,95.426z"></path>
</g>
</svg>
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