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@anotherjavadude
Created June 19, 2012 08:16
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Simple static tree with tooltips

Like to display some info as tooltip from the JSON for each node. Read from the info attribute.

<!DOCTYPE html>
<html>
<head>
<title>Simple Tree Demo</title>
<script src="http://d3js.org/d3.v2.js"></script>
<style>
.link {
fill: none;
stroke: #ccc;
stroke-width: 1.5px;
}
div.tooltip {
position: absolute;
text-align: center;
width: 100px;
height: 10px;
padding: 8px;
font: 10px sans-serif;
background: #ffff99;
border: solid 1px #aaa;
border-radius: 8px;
pointer-events: none;
}
</style>
</head>
<body>
<div id="viz"></div>
<script type="text/javascript">
//JSON object with the data
var treeData = {"name" : "Root", "info" : "1", "children" : [
{"name" : "A", "info" : "2" },
{"name" : "B", "info" : "3" },
{"name" : "C", "info" : "4", "children": [
{"name" : "C1", "info" : "5" },
{"name" : "C2", "info" : "6" }
]}
]};
// Create a svg canvas
var vis = d3.select("#viz").append("svg:svg")
.attr("width", 400)
.attr("height", 300)
.append("svg:g")
.attr("transform", "translate(40, 30)"); // shift everything to the right
// Add tooltip div
var div = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 1e-6);
// Create a tree "canvas"
var tree = d3.layout.tree()
.size([300,150]);
var diagonal = d3.svg.diagonal();
// Preparing the data for the tree layout, convert data into an array of nodes
var nodes = tree.nodes(treeData);
// Create an array with all the links
var links = tree.links(nodes);
console.log("Raw:")
console.log(treeData)
console.log("Nodes:")
console.log(nodes)
console.log("Links:" )
console.log(links)
// Show me a link in raw and its path version
console.log(links[0])
console.log(diagonal(links[0]))
var link = vis.selectAll("pathlink")
.data(links)
.enter().append("svg:path")
.attr("class", "link")
.attr("d", diagonal)
var node = vis.selectAll("g.node")
.data(nodes)
.enter().append("svg:g")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
// Add the dot at every node
node.append("svg:circle")
.on("mouseover", mouseover)
.on("mousemove", function(d){mousemove(d);})
.on("mouseout", mouseout)
.attr("fill","red")
.attr("r", 5.5);
node.append("svg:text")
.attr("dx", 8)
.attr("dy", 3)
.text(function(d) { return d.name; })
function mouseover() {
div.transition()
.duration(300)
.style("opacity", 1);
}
function mousemove(d) {
div
.text("Info about " + d.name + ":" + d.info)
.style("left", (d3.event.pageX ) + "px")
.style("top", (d3.event.pageY) + "px");
}
function mouseout() {
div.transition()
.duration(300)
.style("opacity", 1e-6);
}
</script>
</body>
</html>
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