views/circle_packing.html.template from shreyasbharath/cpp_dependency_graph

views/circle_packing.html.template
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Maintainability

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<!DOCTYPE html>
<meta charset="utf-8">
<style>

.node {
  cursor: pointer;
}

.node:hover {
  stroke: #000;
  stroke-width: 1.5px;
}

.node--leaf {
  fill: white;
}

.label {
  font: 11px "Helvetica Neue", Helvetica, Arial, sans-serif;
  text-anchor: middle;
  text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, -1px 0 0 #fff, 0 -1px 0 #fff;
}

.label,
.node--root,
.node--leaf {
  pointer-events: none;
}

</style>
<svg width="960" height="960"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var svg = d3.select("svg"),
    margin = 20,
    diameter = +svg.attr("width"),
    g = svg.append("g").attr("transform", "translate(" + diameter / 2 + "," + diameter / 2 + ")");

var color = d3.scaleLinear()
    .domain([-1, 5])
    .range(["hsl(152,80%%,80%%)", "hsl(228,30%%,40%%)"])
    .interpolate(d3.interpolateHcl);

var pack = d3.pack()
    .size([diameter - margin, diameter - margin])
    .padding(2);

var root = %{tree};

root = d3.hierarchy(root)
    .sum(function(d) { return d.size; })
    .sort(function(a, b) { return b.value - a.value; });

var focus = root,
    nodes = pack(root).descendants(),
    view;

var circle = g.selectAll("circle")
  .data(nodes)
  .enter().append("circle")
    .attr("class", function(d) { return d.parent ? d.children ? "node" : "node node--leaf" : "node node--root"; })
    .style("fill", function(d) { return d.children ? color(d.depth) : null; })
    .on("click", function(d) { if (focus !== d) zoom(d), d3.event.stopPropagation(); });

var text = g.selectAll("text")
  .data(nodes)
  .enter().append("text")
    .attr("class", "label")
    .style("fill-opacity", function(d) { return d.parent === root ? 1 : 0; })
    .style("display", function(d) { return d.parent === root ? "inline" : "none"; })
    .text(function(d) { return d.data.name; });

var node = g.selectAll("circle,text");

svg
    .style("background", color(-1))
    .on("click", function() { zoom(root); });

zoomTo([root.x, root.y, root.r * 2 + margin]);

function zoom(d) {
  var focus0 = focus; focus = d;

  var transition = d3.transition()
      .duration(d3.event.altKey ? 7500 : 750)
      .tween("zoom", function(d) {
        var i = d3.interpolateZoom(view, [focus.x, focus.y, focus.r * 2 + margin]);
        return function(t) { zoomTo(i(t)); };
      });

  transition.selectAll("text")
    .filter(function(d) { return d.parent === focus || this.style.display === "inline"; })
      .style("fill-opacity", function(d) { return d.parent === focus ? 1 : 0; })
      .on("start", function(d) { if (d.parent === focus) this.style.display = "inline"; })
      .on("end", function(d) { if (d.parent !== focus) this.style.display = "none"; });
}

function zoomTo(v) {
  var k = diameter / v[2]; view = v;
  node.attr("transform", function(d) { return "translate(" + (d.x - v[0]) * k + "," + (d.y - v[1]) * k + ")"; });
  circle.attr("r", function(d) { return d.r * k; });
}

</script>