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HTML

              
                <div id="mountNode"></div>
              
            
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CSS

              
                

              
            
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JS

              
                /*
 * Tamplate has default install the newest G6 && G6Plugins as
 * https://unpkg.com/@antv/g6/build/g6.js
 * https://unpkg.com/@antv/g6/build/plugins.js
 * if you can not access this url above you can install By you own
 */

/*
 * 模版已经默认按以下链接安装了最新版 G6 和 G6Plugins
 * https://unpkg.com/@antv/g6/build/g6.js
 * https://unpkg.com/@antv/g6/build/plugins.js
 * 如果你无法访问上述链接,你需要自己手动安装能访问的链接安装 G6 
 */
G6.registerGuide('tag', {
  draw(item) {
    const group = item.getGraphicGroup();
    const model = item.getModel();
    const {nodeId, label} = model;
    const graph = item.getGraph();
    const node = graph.find(nodeId);
    const nodeBox = node.getBBox();
    const dy = 32;
    const labelMargin = [8, 16];
    const labelShape = group.addShape('text', {
      attrs: {
        x: nodeBox.centerX,
        y: nodeBox.minY - dy - 8,
        text: label,
        fill: '#333',
        textAlign: 'center'
      }
    });
    
    const labelBox = labelShape.getBBox();
    const backRect = group.addShape('path', {
      attrs: {
        path: [
          ['M', labelBox.minX - labelMargin[1], labelBox.minY - labelMargin[0]],
          ['L', labelBox.maxX + labelMargin[1], labelBox.minY - labelMargin[0]],
          ['L', labelBox.maxX + labelMargin[1], labelBox.maxY + labelMargin[0]],
          ['L', labelBox.minX - labelMargin[1], labelBox.maxY + labelMargin[0]],
          ['Z']
        ],
        stroke: 'red'
      }
    });
    group.addShape('path', {
      attrs: {
        path: [
          ['M', nodeBox.centerX, nodeBox.minY - dy],
          ['L', nodeBox.centerX, nodeBox.minY]
        ],
        stroke: 'red',
        lineDash: [2, 2],
        endArrow: true
      }
    });
    return backRect;
  }
});
const data = {
  nodes: [{
    id: 'node1',
    x: 100,
    y: 200
 },{
    id: 'node2',
    x: 300,
    y: 200
 }],
  edges: [{
    id: 'edge1',
    target: 'node2',
    source: 'node1'
 }]
};
const graph = new G6.Graph({
  container: 'mountNode',
  width: 500,
  height: 500
});
graph.read(data);
graph.add('guide', {
  shape: 'tag',
  nodeId: 'node1',
  label: '这是 node1'
});

              
            
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999px

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