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| import React, { useEffect, useRef } from 'react';
| import { Graph, Extensions, extend } from '@antv/g6';
|
| const ExtGraph = extend(Graph, {
| transforms: { 'transform-v4-data': Extensions.TransformV4Data },
| edges: {
| 'cubic-horizontal-edge': Extensions.CubicHorizontalEdge,
| 'cubic-vertical-edge': Extensions.CubicVerticalEdge,
| },
| behaviors: {
| 'activate-relations': Extensions.ActivateRelations,
| },
| });
|
| const G6 = () => {
| const containerRef = useRef(null);
| const graphRef = useRef(null);
|
| useEffect(() => {
| const container = containerRef.current;
| const width = container.scrollWidth;
| const height = container.scrollHeight || 500;
|
| const graph = new ExtGraph({
| container,
| width,
| height,
| transforms: [
| {
| type: 'transform-v4-data',
| activeLifecycle: ['read'],
| },
| ],
| modes: {
| default: ['drag-canvas', 'zoom-canvas', 'drag-node', 'collapse-expand-tree', 'click-select'],
| },
| theme: {
| type: 'spec',
| specification: {
| node: {
| dataTypeField: 'cluster',
| },
| },
| },
| node: (model) => {
| return {
| id: model.id,
| data: {
| ...model.data,
| type: 'rect-node',
| // lodLevels: [],
| keyShape: {
| width: 50,
| height: 20,
| },
| labelShape: {
| text: model.id,
| position: 'bottom',
| maxWidth: '120%',
| lod: Math.floor(Math.random() * 5 - 3),
| fontSize: 8,
| },
| labelBackgroundShape: {},
| anchorPoints:
| model.data.layoutDirection === 'TB'
| ? [
| [0.5, 0],
| [0.5, 1],
| ]
| : [
| [0, 0.5],
| [1, 0.5],
| ],
| animates: {
| update: [
| {
| fields: ['x', 'y'],
| duration: 500,
| shapeId: 'group',
| order: 0,
| },
| {
| fields: ['opacity'],
| duration: 500,
| shapeId: 'keyShape',
| order: 1,
| },
| {
| fields: ['opacity'],
| states: ['active', 'selected'],
| duration: 500,
| shapeId: 'haloShape',
| },
| ],
| },
| },
| };
| },
| edge: {
| type: 'cubic-horizontal-edge',
| keyShape: {
| opacity: 0.5,
| endArrow: true,
| },
| },
| layout: {
| type: 'compactBox',
| getHeight() {
| return 20;
| },
| getWidth() {
| return 50;
| },
| getVGap() {
| return 10;
| },
| getHGap() {
| return 30;
| },
| },
| edgeState: {
| active: {
| lineWidth: 3,
| },
| },
| });
|
| graphRef.current = graph;
|
| // 加载数据
| fetch('https://gw.alipayobjects.com/os/antvdemo/assets/data/algorithm-category.json')
| .then((res) => res.json())
| .then((data) => {
| graph.once('afterlayout', () => {
| graph.fitCenter();
| });
| graph.read({
| type: 'treeData',
| value: data,
| });
| });
|
| // 返回一个清理函数
| return () => {
| if (graphRef.current) {
| graphRef.current.destroy();
| graphRef.current = null;
| }
| };
|
| }, []);
|
| return <div ref={containerRef} style={{ width: '100%', height: '1000px' }} />;
| };
|
| export default G6;
|
|
