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svg-labels.html
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svg-labels.html
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<!doctype html>
<meta charset="utf-8">
<title>Dagre D3 Demo: SVG Labels</title>
<link rel="stylesheet" href="demo.css">
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="../build/dist/dagre-d3.js"></script>
<h1>Dagre D3 Demo: SVG Labels</h1>
<style id="css">
text {
font-weight: 300;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serf;
font-size: 14px;
}
.node rect {
stroke: #999;
fill: #fff;
stroke-width: 1.5px;
}
.edgePath path {
stroke: #333;
stroke-width: 1.5px;
}
</style>
<svg id="svg-canvas" width=960 height=600></svg>
<section>
<p>An example of adding SVG labels. This allows the user to add any svg
elements to the label. This allows for links to works in IE.</p>
</section>
<script id="js">
// Create the input graph
var g = new dagreD3.graphlib.Graph()
.setGraph({})
.setDefaultEdgeLabel(function() { return {}; });
// Create the SVG label to pass in
// Must create in SVG namespace
// http://stackoverflow.com/questions/7547117/add-a-new-line-in-svg-bug-cannot-see-the-line
// This mimics the same way string labels get added in Dagre-D3
svg_label = document.createElementNS('http://www.w3.org/2000/svg', 'text');
tspan = document.createElementNS('http://www.w3.org/2000/svg','tspan');
tspan.setAttributeNS('http://www.w3.org/XML/1998/namespace', 'xml:space', 'preserve');
tspan.setAttribute('dy', '1em');
tspan.setAttribute('x', '1');
link = document.createElementNS('http://www.w3.org/2000/svg', 'a');
link.setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', 'http://google.com/');
link.setAttribute('target', '_blank');
link.textContent = 'IE Capable link';
tspan.appendChild(link);
svg_label.appendChild(tspan);
g.setNode(0, { label: svg_label, labelType: 'svg' });
g.setNode(1, { label: "A" });
g.setNode(2, { label: "B" });
g.nodes().forEach(function(v) {
var node = g.node(v);
// Round the corners of the nodes
node.rx = node.ry = 5;
});
svg_edge_label = document.createElementNS('http://www.w3.org/2000/svg', 'text');
edge_tspan = document.createElementNS('http://www.w3.org/2000/svg','tspan');
edge_tspan.setAttributeNS('http://www.w3.org/XML/1998/namespace', 'xml:space', 'preserve');
edge_tspan.setAttribute('dy', '1em');
edge_tspan.setAttribute('x', '1');
edge_link = document.createElementNS('http://www.w3.org/2000/svg', 'a');
edge_link.setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', 'http://google.com/');
edge_link.setAttribute('target', '_blank');
edge_link.textContent = 'IE Capable Edge link';
edge_tspan.appendChild(edge_link);
svg_edge_label.appendChild(edge_tspan);
// Set up edges, no special attributes.
g.setEdge(0, 1, { labelType: "svg", label: svg_edge_label });
g.setEdge(0, 2);
g.setEdge(1, 2);
// Create the renderer
var render = new dagreD3.render();
// Set up an SVG group so that we can translate the final graph.
var svg = d3.select("svg"),
svgGroup = svg.append("g");
// Run the renderer. This is what draws the final graph.
render(d3.select("svg g"), g);
// Center the graph
var xCenterOffset = (svg.attr("width") - g.graph().width) / 2;
svgGroup.attr("transform", "translate(" + xCenterOffset + ", 20)");
svg.attr("height", g.graph().height + 40);
</script>
<script src="demo.js"></script>