Modified version of this demonstration showing how to dynamically modify groups.
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May 13, 2017 05:55
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Dynamic Group Changing using WebCola and D3
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Dynamic Groups Example</title> | |
| <script src="https://unpkg.com/[email protected]/WebCola/cola.min.js"></script> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <!--Author: Andrew Jakubowicz--> | |
| <style> | |
| .node { | |
| stroke: #fff; | |
| stroke-width: 1.5px; | |
| cursor: move; | |
| } | |
| .group { | |
| stroke: #fff; | |
| stroke-width: 1.5px; | |
| cursor: move; | |
| opacity: 0.7; | |
| } | |
| .link { | |
| stroke: #7a4e4e; | |
| stroke-width: 3px; | |
| stroke-opacity: 1; | |
| } | |
| .label { | |
| fill: white; | |
| font-family: Verdana; | |
| font-size: 25px; | |
| text-anchor: middle; | |
| cursor: move; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var graph = { | |
| nodes: [ | |
| {name: "a", width: 60, height: 40}, | |
| {name: "b", width: 60, height: 40}, | |
| {name: "c", width: 60, height: 40}, | |
| {name: "d", width: 60, height: 40}], | |
| links: [ | |
| {source: 0, target: 1}, | |
| {source: 0, target: 2}, | |
| {source: 0, target: 3} | |
| ], | |
| groups: [] | |
| } | |
| var width = 960, | |
| height = 500; | |
| var color = d3.scaleOrdinal(d3.schemeCategory10); | |
| var simulation = cola.d3adaptor(d3) | |
| .linkDistance(100) | |
| .avoidOverlaps(true) | |
| .handleDisconnected(false) | |
| .size([width, height]) | |
| .nodes(graph.nodes) | |
| .links(graph.links) | |
| .groups([]) | |
| .start(); | |
| // Hacky way of showing groups changing | |
| var s = false; | |
| setInterval(() => { | |
| // With simulation.stop() there is strange freezing while the layout settles. | |
| // simulation.stop(); | |
| if (s){ | |
| graph.groups = [{leaves: [0, 1]}] | |
| } else { | |
| graph.groups = [{leaves:[0, 3]}] | |
| } | |
| restart() | |
| s = !s; | |
| }, 500); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| function restart(){ | |
| var group = svg.selectAll(".group") | |
| .data(graph.groups); | |
| var grpEnter = group.enter().insert("rect", 'rect') | |
| .attr("rx", 8).attr("ry", 8) | |
| .attr("class", "group") | |
| .style("fill", function (d, i) { return color(i); }) | |
| group = group.merge(grpEnter) | |
| group.call(simulation.drag); | |
| var link = svg.selectAll(".link") | |
| .data(graph.links) | |
| var lnkEnter = link.enter().append("line") | |
| .attr("class", "link") | |
| .attr("stroke-width", 2) | |
| .attr("stroke", "black"); | |
| link = link.merge(lnkEnter); | |
| var pad = 3; | |
| var node = svg.selectAll(".node") | |
| .data(graph.nodes); | |
| var nodeEnter = node.enter().append("rect") | |
| .attr("class", "node") | |
| .attr("width", function (d) { return d.width - 2 * pad; }) | |
| .attr("height", function (d) { return d.height - 2 * pad; }) | |
| .attr("rx", 5).attr("ry", 5) | |
| .style("fill", function (d) { return color(graph.groups.length); }) | |
| node = node.merge(nodeEnter); | |
| node.call(simulation.drag); | |
| var label = svg.selectAll(".label") | |
| .data(graph.nodes) | |
| var labelEnter = label.enter().append("text") | |
| .attr("class", "label") | |
| .text(function (d) { return d.name; }) | |
| label = label.merge(labelEnter) | |
| label.call(simulation.drag); | |
| node.append("title") | |
| .text(function (d) { return d.name; }); | |
| // Because groups are dynamic we need to restart them here. | |
| simulation | |
| .groups(graph.groups) | |
| .start().on("tick", function () { | |
| link.attr("x1", function (d) { return d.source.x; }) | |
| .attr("y1", function (d) { return d.source.y; }) | |
| .attr("x2", function (d) { return d.target.x; }) | |
| .attr("y2", function (d) { return d.target.y; }); | |
| node.attr("x", function (d) { return d.x - d.width / 2 + pad; }) | |
| .attr("y", function (d) { return d.y - d.height / 2 + pad; }); | |
| group.attr("x", function (d) { return d.bounds.x; }) | |
| .attr("y", function (d) { return d.bounds.y; }) | |
| .attr("width", function (d) { return d.bounds.width(); }) | |
| .attr("height", function (d) { return d.bounds.height(); }); | |
| label.attr("x", function (d) { return d.x; }) | |
| .attr("y", function (d) { | |
| var h = this.getBBox().height; | |
| return d.y + h/4; | |
| }); | |
| }); | |
| }; | |
| restart(); | |
| </script> | |
| </body> | |
| </html> |
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