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168 lines
5.0 KiB
168 lines
5.0 KiB
/* ------------------------------------------------------------------------------ |
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* |
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* # D3.js - basic tree layout |
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* |
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* Demo of tree layout setup with .json data source |
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* |
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* Version: 1.0 |
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* Latest update: August 1, 2015 |
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* |
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* ---------------------------------------------------------------------------- */ |
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$(function () { |
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// Initialize chart |
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treeBasic('#d3-tree-basic', 800); |
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// Chart setup |
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function treeBasic(element, height) { |
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// Basic setup |
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// ------------------------------ |
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// Define main variables |
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var d3Container = d3.select(element), |
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margin = {top: 0, right: 0, bottom: 0, left: 40}, |
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right, |
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height = height - margin.top - margin.bottom - 5; |
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// Create chart |
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// ------------------------------ |
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// Add SVG element |
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var container = d3Container.append("svg"); |
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// Add SVG group |
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var svg = container |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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// Construct chart layout |
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// ------------------------------ |
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// Tree |
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var tree = d3.layout.tree() |
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.size([height, width - 180]); |
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// Diagonal projection |
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var diagonal = d3.svg.diagonal() |
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.projection(function(d) { return [d.y, d.x]; }); |
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// Load data |
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// ------------------------------ |
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d3.json("assets/demo_data/d3/tree/tree_data_basic.json", function(error, json) { |
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var nodes = tree.nodes(json), |
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links = tree.links(nodes); |
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// Links |
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// ------------------------------ |
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// Append link group |
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var linkGroup = svg.append("g") |
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.attr("class", "d3-tree-link-group"); |
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// Append link path |
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var link = linkGroup.selectAll(".d3-tree-link") |
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.data(links) |
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.enter() |
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.append("path") |
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.attr("class", "d3-tree-link") |
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.attr("d", diagonal) |
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.style("fill", "none") |
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.style("stroke", "#ddd") |
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.style("stroke-width", 1.5); |
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// Nodes |
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// ------------------------------ |
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// Append node group |
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var nodeGroup = svg.append("g") |
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.attr("class", "d3-tree-node-group"); |
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// Append node |
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var node = nodeGroup.selectAll(".d3-tree-node") |
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.data(nodes) |
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.enter() |
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.append("g") |
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.attr("class", "d3-tree-node") |
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.attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; }); |
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// Append node circles |
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node.append("circle") |
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.attr("r", 4.5) |
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.attr("class", "d3-tree-circle") |
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.style("fill", "#fff") |
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.style("stroke", "#2196F3") |
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.style("stroke-width", 1.5); |
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// Append node text |
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node.append("text") |
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.attr("dx", function(d) { return d.children ? -12 : 12; }) |
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.attr("dy", 4) |
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.style("text-anchor", function(d) { return d.children ? "end" : "start"; }) |
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.style("font-size", 12) |
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.text(function(d) { return d.name; }); |
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// Resize chart |
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// ------------------------------ |
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// Call function on window resize |
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$(window).on('resize', resize); |
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// Call function on sidebar width change |
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$('.sidebar-control').on('click', resize); |
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// Resize function |
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// |
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// Since D3 doesn't support SVG resize by default, |
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// we need to manually specify parts of the graph that need to |
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// be updated on window resize |
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function resize() { |
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// Layout variables |
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right, |
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nodes = tree.nodes(json), |
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links = tree.links(nodes); |
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// Layout |
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// ------------------------- |
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// Main svg width |
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container.attr("width", width + margin.left + margin.right); |
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// Width of appended group |
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svg.attr("width", width + margin.left + margin.right); |
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// Tree size |
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tree.size([height, width - 180]); |
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// Chart elements |
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// ------------------------- |
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// Link paths |
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svg.selectAll(".d3-tree-link").attr("d", diagonal) |
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// Node paths |
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svg.selectAll(".d3-tree-node").attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; }); |
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} |
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}); |
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} |
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}); |