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135 lines
3.4 KiB
HTML
135 lines
3.4 KiB
HTML
<!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>Dynamically Add Nodes and Edges</title>
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</head>
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<body>
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<select id="selector">
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<option value="default">默认</option>
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<option value="addNode">添加节点</option>
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<option value="addEdge">添加边</option></select>
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<div id="mountNode"></div>
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<script src="../build/g6.js"></script>
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<script>// 封装点击添加边的交互
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G6.registerBehavior('click-add-edge', {
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getEvents() {
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return {
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'node:click': 'onClick',
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mousemove: 'onMousemove',
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'edge:click': 'onEdgeClick' // 点击空白处，取消边
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};
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},
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onClick(ev) {
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const node = ev.item;
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const graph = this.graph;
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const point = {
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x: ev.x,
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y: ev.y
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};
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const model = node.getModel();
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if (this.addingEdge && this.edge) {
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graph.updateItem(this.edge, {
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target: model.id
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});
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// graph.setItemState(this.edge, 'selected', true);
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this.edge = null;
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this.addingEdge = false;
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} else {
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this.edge = graph.addItem('edge', {
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source: model.id,
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target: point
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});
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this.addingEdge = true;
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}
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},
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onMousemove(ev) {
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const point = {
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x: ev.x,
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y: ev.y
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};
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if (this.addingEdge && this.edge) {
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this.graph.updateItem(this.edge, {
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target: point
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});
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}
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},
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onEdgeClick(ev) {
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const currentEdge = ev.item;
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// 拖拽过程中，点击会点击到新增的边上
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if (this.addingEdge && this.edge == currentEdge) {
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graph.removeItem(this.edge);
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this.edge = null;
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this.addingEdge = false;
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}
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}
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});
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// 封装点击添加边的交互
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G6.registerBehavior('click-add-node', {
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getEvents() {
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return {
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'canvas:click': 'onClick'
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};
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},
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onClick(ev) {
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const graph = this.graph;
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const node = graph.addItem('node', {
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x: ev.x,
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y: ev.y,
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id: G6.Util.uniqueId()
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});
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// graph.setItemState(node, 'selected', true);// 添加后默认选中
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}
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});
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const data = {
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nodes: [{
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id: 'node1',
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x: 100,
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y: 200
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},
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{
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id: 'node2',
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x: 300,
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y: 200
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},
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{
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id: 'node3',
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x: 300,
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y: 300
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}],
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edges: [{
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id: 'edge1',
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target: 'node2',
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source: 'node1'
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}]
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};
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const graph = new G6.Graph({
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container: 'mountNode',
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width: 500,
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height: 500,
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modes: {
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default:
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['drag-node', 'click-select'],
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addNode: ['click-add-node', 'click-select'],
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addEdge: ['click-add-edge', 'click-select']
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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.on('graphstatechange', e => {
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console.log(e);
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});
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document.getElementById('selector').addEventListener('change', e => {
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const value = e.target.value;
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graph.setMode(value);
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});</script>
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</body>
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</html> |