saveable graph layout

_.md

[ Launch: savable graph layout ] 4617766 by enjalot

config.json

{"description":"saveable graph layout","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"graph.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"style.css":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"fullscreen":false,"thumbnail":"http://i.imgur.com/hV9Eomz.png"}

graph.json

{"nodes":[{"x":173,"y":306},{"x":107,"y":355},{"x":207,"y":309},{"x":200,"y":287},{"x":111,"y":300},{"x":100,"y":278},{"x":88,"y":307},{"x":93,"y":333},{"x":129,"y":361},{"x":117,"y":329},{"x":253,"y":327},{"x":299,"y":274},{"x":281,"y":190},{"x":231,"y":318},{"x":240,"y":344},{"x":242,"y":296},{"x":331,"y":163},{"x":339,"y":121},{"x":321,"y":122},{"x":304,"y":120},{"x":336,"y":104},{"x":320,"y":99},{"x":303,"y":104},{"x":318,"y":180},{"x":349,"y":236},{"x":350,"y":261},{"x":318,"y":265},{"x":331,"y":254},{"x":277,"y":219},{"x":261,"y":227},{"x":277,"y":145},{"x":304,"y":205},{"x":226,"y":281},{"x":305,"y":227},{"x":233,"y":232},{"x":223,"y":217},{"x":211,"y":230},{"x":234,"y":250},{"x":215,"y":247},{"x":319,"y":337},{"x":406,"y":200},{"x":386,"y":289},{"x":396,"y":236},{"x":281,"y":258},{"x":247,"y":204},{"x":202,"y":156},{"x":525,"y":291},{"x":460,"y":303},{"x":371,"y":319},{"x":305,"y":300},{"x":334,"y":218},{"x":288,"y":320},{"x":273,"y":387},{"x":234,"y":396},{"x":308,"y":320},{"x":348,"y":313},{"x":303,"y":360},{"x":393,"y":337},{"x":356,"y":335},{"x":372,"y":358},{"x":393,"y":445},{"x":394,"y":358},{"x":382,"y":348},{"x":379,"y":435},{"x":351,"y":352},{"x":362,"y":435},{"x":376,"y":454},{"x":447,"y":393},{"x":365,"y":271},{"x":369,"y":258},{"x":346,"y":280},{"x":360,"y":285},{"x":295,"y":244},{"x":442,"y":353},{"x":445,"y":329},{"x":395,"y":272},{"x":356,"y":452}],"links":[{"target":0,"source":1},{"target":0,"source":2},{"target":0,"source":3},{"target":2,"source":3},{"target":0,"source":4},{"target":0,"source":5},{"target":0,"source":6},{"target":0,"source":7},{"target":0,"source":8},{"target":0,"source":9},{"target":10,"source":11},{"target":3,"source":11},{"target":2,"source":11},{"target":0,"source":11},{"target":11,"source":12},{"target":11,"source":13},{"target":11,"source":14},{"target":11,"source":15},{"target":16,"source":17},{"target":16,"source":18},{"target":17,"source":18},{"target":16,"source":19},{"target":17,"source":19},{"target":18,"source":19},{"target":16,"source":20},{"target":17,"source":20},{"target":18,"source":20},{"target":19,"source":20},{"target":16,"source":21},{"target":17,"source":21},{"target":18,"source":21},{"target":19,"source":21},{"target":20,"source":21},{"target":16,"source":22},{"target":17,"source":22},{"target":18,"source":22},{"target":19,"source":22},{"target":20,"source":22},{"target":21,"source":22},{"target":16,"source":23},{"target":17,"source":23},{"target":18,"source":23},{"target":19,"source":23},{"target":20,"source":23},{"target":21,"source":23},{"target":22,"source":23},{"target":12,"source":23},{"target":11,"source":23},{"target":23,"source":24},{"target":11,"source":24},{"target":24,"source":25},{"target":23,"source":25},{"target":11,"source":25},{"target":24,"source":26},{"target":11,"source":26},{"target":16,"source":26},{"target":25,"source":26},{"target":11,"source":27},{"target":23,"source":27},{"target":25,"source":27},{"target":24,"source":27},{"target":26,"source":27},{"target":11,"source":28},{"target":27,"source":28},{"target":23,"source":29},{"target":27,"source":29},{"target":11,"source":29},{"target":23,"source":30},{"target":30,"source":31},{"target":11,"source":31},{"target":23,"source":31},{"target":27,"source":31},{"target":11,"source":32},{"target":11,"source":33},{"target":27,"source":33},{"target":11,"source":34},{"target":29,"source":34},{"target":11,"source":35},{"target":34,"source":35},{"target":29,"source":35},{"target":34,"source":36},{"target":35,"source":36},{"target":11,"source":36},{"target":29,"source":36},{"target":34,"source":37},{"target":35,"source":37},{"target":36,"source":37},{"target":11,"source":37},{"target":29,"source":37},{"target":34,"source":38},{"target":35,"source":38},{"target":36,"source":38},{"target":37,"source":38},{"target":11,"source":38},{"target":29,"source":38},{"target":25,"source":39},{"target":25,"source":40},{"target":24,"source":41},{"target":25,"source":41},{"target":41,"source":42},{"target":25,"source":42},{"target":24,"source":42},{"target":11,"source":43},{"target":26,"source":43},{"target":27,"source":43},{"target":28,"source":44},{"target":11,"source":44},{"target":28,"source":45},{"target":46,"source":47},{"target":47,"source":48},{"target":25,"source":48},{"target":27,"source":48},{"target":11,"source":48},{"target":26,"source":49},{"target":11,"source":49},{"target":49,"source":50},{"target":24,"source":50},{"target":49,"source":51},{"target":26,"source":51},{"target":11,"source":51},{"target":51,"source":52},{"target":39,"source":52},{"target":51,"source":53},{"target":51,"source":54},{"target":49,"source":54},{"target":26,"source":54},{"target":51,"source":55},{"target":49,"source":55},{"target":39,"source":55},{"target":54,"source":55},{"target":26,"source":55},{"target":11,"source":55},{"target":16,"source":55},{"target":25,"source":55},{"target":41,"source":55},{"target":48,"source":55},{"target":49,"source":56},{"target":55,"source":56},{"target":55,"source":57},{"target":41,"source":57},{"target":48,"source":57},{"target":55,"source":58},{"target":48,"source":58},{"target":27,"source":58},{"target":57,"source":58},{"target":11,"source":58},{"target":58,"source":59},{"target":55,"source":59},{"target":48,"source":59},{"target":57,"source":59},{"target":48,"source":60},{"target":58,"source":60},{"target":59,"source":60},{"target":48,"source":61},{"target":58,"source":61},{"target":60,"source":61},{"target":59,"source":61},{"target":57,"source":61},{"target":55,"source":61},{"target":55,"source":62},{"target":58,"source":62},{"target":59,"source":62},{"target":48,"source":62},{"target":57,"source":62},{"target":41,"source":62},{"target":61,"source":62},{"target":60,"source":62},{"target":59,"source":63},{"target":48,"source":63},{"target":62,"source":63},{"target":57,"source":63},{"target":58,"source":63},{"target":61,"source":63},{"target":60,"source":63},{"target":55,"source":63},{"target":55,"source":64},{"target":62,"source":64},{"target":48,"source":64},{"target":63,"source":64},{"target":58,"source":64},{"target":61,"source":64},{"target":60,"source":64},{"target":59,"source":64},{"target":57,"source":64},{"target":11,"source":64},{"target":63,"source":65},{"target":64,"source":65},{"target":48,"source":65},{"target":62,"source":65},{"target":58,"source":65},{"target":61,"source":65},{"target":60,"source":65},{"target":59,"source":65},{"target":57,"source":65},{"target":55,"source":65},{"target":64,"source":66},{"target":58,"source":66},{"target":59,"source":66},{"target":62,"source":66},{"target":65,"source":66},{"target":48,"source":66},{"target":63,"source":66},{"target":61,"source":66},{"target":60,"source":66},{"target":57,"source":67},{"target":25,"source":68},{"target":11,"source":68},{"target":24,"source":68},{"target":27,"source":68},{"target":48,"source":68},{"target":41,"source":68},{"target":25,"source":69},{"target":68,"source":69},{"target":11,"source":69},{"target":24,"source":69},{"target":27,"source":69},{"target":48,"source":69},{"target":41,"source":69},{"target":25,"source":70},{"target":69,"source":70},{"target":68,"source":70},{"target":11,"source":70},{"target":24,"source":70},{"target":27,"source":70},{"target":41,"source":70},{"target":58,"source":70},{"target":27,"source":71},{"target":69,"source":71},{"target":68,"source":71},{"target":70,"source":71},{"target":11,"source":71},{"target":48,"source":71},{"target":41,"source":71},{"target":25,"source":71},{"target":26,"source":72},{"target":27,"source":72},{"target":11,"source":72},{"target":48,"source":73},{"target":48,"source":74},{"target":73,"source":74},{"target":69,"source":75},{"target":68,"source":75},{"target":25,"source":75},{"target":48,"source":75},{"target":41,"source":75},{"target":70,"source":75},{"target":71,"source":75},{"target":64,"source":76},{"target":65,"source":76},{"target":66,"source":76},{"target":63,"source":76},{"target":62,"source":76},{"target":48,"source":76},{"target":58,"source":76}]}

inlet.js

//adapted from mike bostock's example:
//http://bl.ocks.org/4566102
//focused on saving the results of dragging


var cm = tributary.getCodeEditor("graph.json");
var graph = JSON.parse(cm.getValue());


var width = tributary.sw;
var height = tributary.sh;
var shiftKey;

var svg = d3.select("svg")
  

var link = svg.append("g")
  .attr("class", "link")
  .selectAll("line");
 
var brush = svg.append("g")
    .datum(function() { return {selected: false, previouslySelected: false}; })
    .attr("class", "brush");
 
var node = svg.append("g")
    .attr("class", "node")
  .selectAll("circle");

var linkIndices = _.map(graph.links, function(d) {
  return {target: d.target, source: d.source};
})
graph.links.forEach(function(d) {
  d.source = graph.nodes[d.source];
  d.target = graph.nodes[d.target];
});

link = link.data(graph.links).enter().append("line")
    .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; });

brush.call(d3.svg.brush()
      .x(d3.scale.identity().domain([0, width]))
      .y(d3.scale.identity().domain([0, height]))
      .on("brushstart", function(d) {
        node.each(function(d) { d.previouslySelected = shiftKey && d.selected; });
      })
      .on("brush", function() {
        var extent = d3.event.target.extent();
        node.classed("selected", function(d) {
          return d.selected = d.previouslySelected ^
              (extent[0][0] <= d.x && d.x < extent[1][0]
              && extent[0][1] <= d.y && d.y < extent[1][1]);
        });
      })
      .on("brushend", function() {
        d3.event.target.clear();
        d3.select(this).call(d3.event.target);
      }));

node = node.data(graph.nodes).enter().append("circle")
    .attr("r", 4)
    .attr("cx", function(d) { return d.x; })
    .attr("cy", function(d) { return d.y; })
    .on("mousedown", function(d) {
      if (!d.selected) { // Don't deselect on shift-drag.
        if (!shiftKey) node.classed("selected", function(p) { return p.selected = d === p; });
        else d3.select(this).classed("selected", d.selected = true);
      }
    })
    .on("mouseup", function(d) {
      if (d.selected && shiftKey) d3.select(this).classed("selected", d.selected = false);
    })
    .call(d3.behavior.drag()
      .on("drag", function(d) { nudge(d3.event.dx, d3.event.dy); })
      .on("dragend", function(d) {
        save();
      })
    );

function nudge(dx, dy) {
  node.filter(function(d) { return d.selected; })
      .attr("cx", function(d) { return d.x += dx; })
      .attr("cy", function(d) { return d.y += dy; })
 
  link.filter(function(d) { return d.source.selected; })
      .attr("x1", function(d) { return d.source.x; })
      .attr("y1", function(d) { return d.source.y; });
 
  link.filter(function(d) { return d.target.selected; })
      .attr("x2", function(d) { return d.target.x; })
      .attr("y2", function(d) { return d.target.y; });

  //d3.event.preventDefault();
}

function save() {
  //remove extraneous attributes from graph before saving;
  var nodes = _.map(graph.nodes, function(d) {
    return {x: d.x, y: d.y };
  })
  var links = _.map(graph.links, function(d) {
    return {source: {x: d.source.x, y: d.source.y },
            target: {x: d.target.x, y: d.target.y }
           };
  })
  var out = {"nodes":nodes, "links":linkIndices};
  //set the value of the json again, which saves it
  cm.setValue(JSON.stringify(out))
}

style.css

.node {
  stroke: #fff;
  stroke-width: 1.5px;
}
 
.node .selected {
  stroke: red;
}
 
.link {
  stroke: #999;
}
 
.brush .extent {
  fill-opacity: .1;
  stroke: #fff;
  shape-rendering: crispEdges;
}