mirror of
https://gitee.com/antv/g6.git
synced 2024-12-06 21:58:25 +08:00
213 lines
5.1 KiB
HTML
213 lines
5.1 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>重新布局不改变视窗</title>
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</head>
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<body>
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<button id='changeView'>改变布局</button>
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<div id="mountNode"></div>
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<script src="../build/g6.js"></script>
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<script src="../build//grid.js"></script>
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<script>
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G6.registerBehavior('click-add-node', {
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getEvents() {
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return {
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'node:click': 'onClick'
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};
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},
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onClick(ev) {
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const itemModel = ev.item.getModel();
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clickedNodeId = itemModel.id;
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const graph = this.graph;
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const nodes = graph.getNodes();
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const edges = graph.getEdges();
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let newData;
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if (itemModel.id == 2) {
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newData = data2_m;
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} else {
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return;
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}
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let newNodeModels = newData.nodes;
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let newEdgeModels = [];
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// deduplication the items in newEdgeModels
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newData.edges.forEach(e => {
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let exist = false;
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newEdgeModels.forEach(ne => {
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if(ne.source === e.source && ne.target === e.target) exist = true;
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});
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if(!exist) {
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newEdgeModels.push(e);
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}
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});
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// for graph.changeData()
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const allNodeModels = [];
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const allEdgeModels = [];
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// add new nodes to graph
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const nodeMap = new Map();
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nodes.forEach((n, i)=>{
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const nModel = n.getModel();
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nodeMap.set(nModel.id, i);
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});
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newNodeModels.forEach((nodeModel, i) => {
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if (nodeMap.get(nodeModel.id) === undefined) {
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// set the initial positions of the new nodes to the focus(clicked) node
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nodeModel.x = itemModel.x;
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nodeModel.y = itemModel.y;
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const node = graph.addItem('node', nodeModel);
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}
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});
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// add new edges to graph
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const edgeMap = new Map();
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edges.forEach((e, i)=>{
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const eModel = e.getModel();
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edgeMap.set(eModel.source+","+eModel.target, i);
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});
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const oldEdgeNum = edges.length;
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newEdgeModels.forEach((em, i) => {
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const exist = edgeMap.get(em.source+","+em.target);
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if (exist === undefined) {
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const edge = graph.addItem('edge', em);
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edgeMap.set(em.source+","+em.target, oldEdgeNum+i);
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}
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});
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edges.forEach((e, i) => {
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allEdgeModels.push(e.getModel());
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});
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nodes.forEach((n, i) => {
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allNodeModels.push(n.getModel());
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});
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// the max degree about foces(clicked) node in the newly added data
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const maxDegree = 4;
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// the max degree about foces(clicked) node in the original data
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const oMaxDegree = 3;
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const unitRadius = 40;
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const focusNodeId = "2";
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// re-place the clicked node far away the exisiting items
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// along the radius from center node to it
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const vx = itemModel.x - focusNode.x;
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const vy = itemModel.y - focusNode.y;
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const vlength = Math.sqrt(vx*vx+vy*vy);
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const ideallength = unitRadius * maxDegree + mainUnitRadius * oMaxDegree;
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itemModel.x = ideallength * vx / vlength + focusNode.x;
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itemModel.y = ideallength * vy / vlength + focusNode.y;
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const subRadialLayout = new Radial({
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center: [ itemModel.x, itemModel.y ],
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maxIteration: 200,
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focusNode: "2",
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unitRadius,
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linkDistance: 180
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});
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graph.addPlugin(subRadialLayout);
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// only layout the newly added part around the clicked node
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subRadialLayout.layout(
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{
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'nodes': newNodeModels,
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'edges': newEdgeModels
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}
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);
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graph.changeData({"nodes": allNodeModels, "edges": allEdgeModels});
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}
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});
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const grid = new Grid()
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const graph = new G6.TreeGraph({
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plugins: [grid],
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container: 'mountNode',
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width: 500,
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height: 500,
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defaultNode: {
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size: [20, 20]
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},
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modes: {
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default: [ 'drag-node', 'drag-canvas', {
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type: 'collapse-expand',
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onChange(item, collapsed) {
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const data = item.getModel()
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data.collapsed = collapsed
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return true
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}
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} ]
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},
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nodeStyle: {
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default: {
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fill: '#40a9ff',
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stroke: '#096dd9'
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}
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},
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edgeStyle: {
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default: {
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stroke: '#A3B1BF'
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}
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},
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defaultEdge: {
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shape: 'cubic-horizontal'
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},
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layout: {
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type: 'dendrogram',
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nodeSep: 50,
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rankSep: 100,
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direction: 'LR'
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}
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});
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let data = {
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isRoot: true,
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id: 'Root',
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style: {
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fill: 'red'
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},
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children: [
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{
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id: 'SubTreeNode1',
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raw: {},
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children: [
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{
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id: 'SubTreeNode1.1'
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}
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]
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},
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{
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id: 'SubTreeNode2',
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children: [
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{
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id: 'SubTreeNode2.1'
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},
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{
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id: 'SubTreeNode2.2'
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}
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]
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}
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]
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};
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graph.data(data)
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graph.render()
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graph.fitView()
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document.getElementById('changeView').addEventListener('click', (evt) => {
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const matrix = G6.Util.clone(graph.get('group').getMatrix())
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data.children.pop()
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graph.changeData(data)
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graph.get('group').setMatrix(matrix)
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graph.paint()
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})
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</script>
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</body>
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</html>
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