ngx-relationship-visualiser
Version:
A D3 force-directed-graph, implemented in Typescript for Angular, generates a visualisation graph with customisable link lengths and multiple labels between nodes. The graph can handle new data that will update lines, nodes, links, and path labels. Whenev
153 lines • 19.6 kB
JavaScript
import * as dagre from '@dagrejs/dagre';
import { Injectable } from '@angular/core';
import * as i0 from "@angular/core";
export var Orientation;
(function (Orientation) {
Orientation["LEFT_TO_RIGHT"] = "LR";
Orientation["RIGHT_TO_LEFT"] = "RL";
Orientation["TOP_TO_BOTTOM"] = "TB";
Orientation["BOTTOM_TO_TOP"] = "BT";
})(Orientation || (Orientation = {}));
export var Alignment;
(function (Alignment) {
Alignment["CENTER"] = "C";
Alignment["UP_LEFT"] = "UL";
Alignment["UP_RIGHT"] = "UR";
Alignment["DOWN_LEFT"] = "DL";
Alignment["DOWN_RIGHT"] = "DR";
})(Alignment || (Alignment = {}));
export class DagreNodesOnlyLayout {
defaultSettings = {
orientation: Orientation.LEFT_TO_RIGHT,
marginX: 70,
marginY: 70,
edgePadding: 200,
rankPadding: 300,
nodePadding: 100,
curveDistance: 20,
multigraph: true,
compound: true,
align: Alignment.UP_RIGHT,
acyclicer: undefined,
ranker: 'network-simplex',
};
dagreGraph;
dagreNodes;
dagreEdges;
renderLayout(graph) {
this.createDagreGraph(graph);
dagre.layout(this.dagreGraph);
for (const dagreNodeId in this.dagreGraph._nodes) {
const dagreNode = this.dagreGraph._nodes[dagreNodeId];
const node = graph.nodes.find((n) => n.id === dagreNode.id);
if (node.fx === null && node.fy === null) {
// Check if the node has any associated edges
const hasAssociatedEdges = graph.links.some((link) => link.source === dagreNode.id || link.target === dagreNode.id);
if (hasAssociatedEdges) {
node.fx = dagreNode.x;
node.fy = dagreNode.y;
}
}
node.dimension = {
width: dagreNode.width,
height: dagreNode.height,
};
}
return graph;
}
initRenderLayout(graph) {
this.createDagreGraph(graph);
dagre.layout(this.dagreGraph);
let minFy = Infinity;
for (const dagreNodeId in this.dagreGraph._nodes) {
const dagreNode = this.dagreGraph._nodes[dagreNodeId];
const node = graph.nodes.find((n) => n.id === dagreNode.id);
// Check if the node has any associated edges
const hasAssociatedEdges = graph.links.some((link) => link.source === dagreNode.id || link.target === dagreNode.id);
if (hasAssociatedEdges) {
node.fx = dagreNode.x;
node.fy = dagreNode.y;
minFy = Math.min(minFy, dagreNode.y - this.defaultSettings.marginY);
}
else {
// Give them a null value to later random position them only when the layout button is pressed so they come into view
node.fx = null;
node.fy = null;
}
node.dimension = {
width: dagreNode.width,
height: dagreNode.height,
};
}
// Adjust the fy values to start from 0 if there are associated edges
if (minFy !== Infinity) {
for (const node of graph.nodes) {
if (node.fy !== null) {
node.fy -= minFy;
}
}
}
return graph;
}
createDagreGraph(graph) {
const settings = Object.assign({}, this.defaultSettings);
this.dagreGraph = new dagre.graphlib.Graph({
compound: settings.compound,
multigraph: settings.multigraph,
});
this.dagreGraph.setGraph({
rankdir: settings.orientation,
marginx: settings.marginX,
marginy: settings.marginY,
edgesep: settings.edgePadding,
ranksep: settings.rankPadding,
nodesep: settings.nodePadding,
align: settings.align,
acyclicer: settings.acyclicer,
ranker: settings.ranker,
multigraph: settings.multigraph,
compound: settings.compound,
});
this.dagreNodes = graph.nodes.map((n) => {
const node = Object.assign({}, n);
node.width = 20;
node.height = 20;
node.x = n.fx;
node.y = n.fy;
return node;
});
this.dagreEdges = graph.links.map((l) => {
const newLink = Object.assign({}, l);
return newLink;
});
for (const node of this.dagreNodes) {
if (!node.width) {
node.width = 20;
}
if (!node.height) {
node.height = 30;
}
// update dagre
this.dagreGraph.setNode(node.id, node);
}
// update dagre
for (const edge of this.dagreEdges) {
if (settings.multigraph) {
this.dagreGraph.setEdge(edge.source, edge.target, edge, edge.linkId);
}
else {
this.dagreGraph.setEdge(edge.source, edge.target);
}
}
return this.dagreGraph;
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: DagreNodesOnlyLayout, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: DagreNodesOnlyLayout, providedIn: 'root' });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: DagreNodesOnlyLayout, decorators: [{
type: Injectable,
args: [{
providedIn: 'root',
}]
}] });
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* as dagre from '@dagrejs/dagre';\r\nimport { Injectable } from '@angular/core';\r\n\r\nexport enum Orientation {\r\n  LEFT_TO_RIGHT = 'LR',\r\n  RIGHT_TO_LEFT = 'RL',\r\n  TOP_TO_BOTTOM = 'TB',\r\n  BOTTOM_TO_TOP = 'BT',\r\n}\r\n\r\nexport enum Alignment {\r\n  CENTER = 'C',\r\n  UP_LEFT = 'UL',\r\n  UP_RIGHT = 'UR',\r\n  DOWN_LEFT = 'DL',\r\n  DOWN_RIGHT = 'DR',\r\n}\r\n\r\nexport interface DagreSettings {\r\n  orientation?: Orientation;\r\n  marginX?: number;\r\n  marginY?: number;\r\n  edgePadding?: number;\r\n  rankPadding?: number;\r\n  nodePadding?: number;\r\n  align?: Alignment;\r\n  acyclicer?: 'greedy';\r\n  ranker?: 'network-simplex' | 'tight-tree' | 'longest-path';\r\n  multigraph?: boolean;\r\n  compound?: boolean;\r\n}\r\n\r\n@Injectable({\r\n  providedIn: 'root',\r\n})\r\nexport class DagreNodesOnlyLayout {\r\n  defaultSettings = {\r\n    orientation: Orientation.LEFT_TO_RIGHT,\r\n    marginX: 70,\r\n    marginY: 70,\r\n    edgePadding: 200,\r\n    rankPadding: 300,\r\n    nodePadding: 100,\r\n    curveDistance: 20,\r\n    multigraph: true,\r\n    compound: true,\r\n    align: Alignment.UP_RIGHT,\r\n    acyclicer: undefined,\r\n    ranker: 'network-simplex',\r\n  };\r\n\r\n  dagreGraph: any;\r\n  dagreNodes: any;\r\n  dagreEdges: any;\r\n\r\n  public renderLayout(graph) {\r\n    this.createDagreGraph(graph);\r\n    dagre.layout(this.dagreGraph);\r\n\r\n    for (const dagreNodeId in this.dagreGraph._nodes) {\r\n      const dagreNode = this.dagreGraph._nodes[dagreNodeId];\r\n      const node = graph.nodes.find((n) => n.id === dagreNode.id);\r\n\r\n      if (node.fx === null && node.fy === null) {\r\n        // Check if the node has any associated edges\r\n        const hasAssociatedEdges = graph.links.some(\r\n          (link) => link.source === dagreNode.id || link.target === dagreNode.id\r\n        );\r\n        if (hasAssociatedEdges) {\r\n          node.fx = dagreNode.x;\r\n          node.fy = dagreNode.y;\r\n        }\r\n      }\r\n\r\n      node.dimension = {\r\n        width: dagreNode.width,\r\n        height: dagreNode.height,\r\n      };\r\n    }\r\n\r\n    return graph;\r\n  }\r\n\r\n  public initRenderLayout(graph) {\r\n    this.createDagreGraph(graph);\r\n    dagre.layout(this.dagreGraph);\r\n    let minFy = Infinity;\r\n    for (const dagreNodeId in this.dagreGraph._nodes) {\r\n      const dagreNode = this.dagreGraph._nodes[dagreNodeId];\r\n      const node = graph.nodes.find((n) => n.id === dagreNode.id);\r\n\r\n      // Check if the node has any associated edges\r\n      const hasAssociatedEdges = graph.links.some(\r\n        (link) => link.source === dagreNode.id || link.target === dagreNode.id\r\n      );\r\n\r\n      if (hasAssociatedEdges) {\r\n        node.fx = dagreNode.x;\r\n        node.fy = dagreNode.y;\r\n        minFy = Math.min(minFy, dagreNode.y - this.defaultSettings.marginY);\r\n      } else {\r\n        // Give them a null value to later random position them only when the layout button is pressed so they come into view\r\n        node.fx = null;\r\n        node.fy = null;\r\n      }\r\n\r\n      node.dimension = {\r\n        width: dagreNode.width,\r\n        height: dagreNode.height,\r\n      };\r\n    }\r\n\r\n    // Adjust the fy values to start from 0 if there are associated edges\r\n    if (minFy !== Infinity) {\r\n      for (const node of graph.nodes) {\r\n        if (node.fy !== null) {\r\n          node.fy -= minFy;\r\n        }\r\n      }\r\n    }\r\n\r\n    return graph;\r\n  }\r\n\r\n  public createDagreGraph(graph): any {\r\n    const settings = Object.assign({}, this.defaultSettings);\r\n    this.dagreGraph = new dagre.graphlib.Graph({\r\n      compound: settings.compound,\r\n      multigraph: settings.multigraph,\r\n    });\r\n    this.dagreGraph.setGraph({\r\n      rankdir: settings.orientation,\r\n      marginx: settings.marginX,\r\n      marginy: settings.marginY,\r\n      edgesep: settings.edgePadding,\r\n      ranksep: settings.rankPadding,\r\n      nodesep: settings.nodePadding,\r\n      align: settings.align,\r\n      acyclicer: settings.acyclicer,\r\n      ranker: settings.ranker,\r\n      multigraph: settings.multigraph,\r\n      compound: settings.compound,\r\n    });\r\n\r\n    this.dagreNodes = graph.nodes.map((n) => {\r\n      const node: any = Object.assign({}, n);\r\n      node.width = 20;\r\n      node.height = 20;\r\n      node.x = n.fx;\r\n      node.y = n.fy;\r\n      return node;\r\n    });\r\n\r\n    this.dagreEdges = graph.links.map((l) => {\r\n      const newLink: any = Object.assign({}, l);\r\n      return newLink;\r\n    });\r\n\r\n    for (const node of this.dagreNodes) {\r\n      if (!node.width) {\r\n        node.width = 20;\r\n      }\r\n      if (!node.height) {\r\n        node.height = 30;\r\n      }\r\n\r\n      // update dagre\r\n      this.dagreGraph.setNode(node.id, node);\r\n    }\r\n\r\n    // update dagre\r\n    for (const edge of this.dagreEdges) {\r\n      if (settings.multigraph) {\r\n        this.dagreGraph.setEdge(edge.source, edge.target, edge, edge.linkId);\r\n      } else {\r\n        this.dagreGraph.setEdge(edge.source, edge.target);\r\n      }\r\n    }\r\n\r\n    return this.dagreGraph;\r\n  }\r\n}\r\n"]}