node/tool/port-tooltip

Example page

import { Graph } from '@antv/x6'
import { Tooltip } from 'antd'
import React from 'react'
import { createRoot } from 'react-dom/client'

const registerPortTooltip = (container: Element, text: string) => {
  container.addEventListener('mouseenter', (e: MouseEvent) => {
    const tooltip = document.querySelector('.x6-tooltip') as HTMLElement
    const content = tooltip?.querySelector('.ant-tooltip-inner') as HTMLElement
    if (content) {
      content.innerText = text
      tooltip.style.left = `${e.clientX - content.offsetWidth / 2}px`
      tooltip.style.top = `${e.clientY - 50}px`
    }
  })
  container.addEventListener('mouseleave', () => {
    const tooltip = document.querySelector('.x6-tooltip') as HTMLElement
    tooltip.style.left = '-1000px'
    tooltip.style.top = '-1000px'
  })
}

class Example extends React.Component {
  private container!: HTMLDivElement

  componentDidMount() {
    const graph = new Graph({
      container: this.container,
      width: 800,
      height: 600,
      grid: true,
      onPortRendered({ contentContainer, port, node }) {
        const text = node.portProp(port.id, 'tip') as string
        registerPortTooltip(contentContainer, text)
      },
    })

    const source = graph.addNode({
      x: 180,
      y: 60,
      width: 100,
      height: 40,
      attrs: {
        body: {
          stroke: '#5F95FF',
          fill: '#EFF4FF',
          strokeWidth: 1,
        },
      },
      ports: {
        groups: {
          bottom: {
            position: 'bottom',
            attrs: {
              circle: {
                stroke: '#5F95FF',
                strokeWidth: 1,
                r: 4,
                magnet: true,
              },
            },
          },
        },
        items: [
          {
            id: 'port-1',
            group: 'bottom',
            tip: 'port-1-tip',
          },
        ],
      },
    })

    const target = graph.addNode({
      x: 320,
      y: 250,
      width: 100,
      height: 40,
      attrs: {
        body: {
          stroke: '#5F95FF',
          fill: '#EFF4FF',
          strokeWidth: 1,
        },
      },
      ports: {
        groups: {
          top: {
            position: 'top',
            attrs: {
              circle: {
                stroke: '#5F95FF',
                strokeWidth: 1,
                r: 4,
              },
            },
          },
        },
        items: [
          {
            id: 'port-2',
            group: 'top',
            tip: 'port-2-tip',
          },
        ],
      },
    })

    graph.addEdge({
      source: { cell: source, port: 'port-1' },
      target: { cell: target, port: 'port-2' },
      attrs: {
        line: {
          stroke: '#A2B1C3',
          strokeWidth: 2,
        },
      },
      zIndex: -1,
    })
  }

  refContainer = (container: HTMLDivElement) => {
    this.container = container
  }

  render() {
    return (
      <div className="x6-graph-wrap">
        <div ref={this.refContainer} className="x6-graph" />
        <Tooltip title="content" overlayClassName="x6-tooltip" visible={true}>
          <span style={{ position: "relative", left: -1000, top: -1000 }} />
        </Tooltip>
      </div>
    )
  }
}

const container = document.getElementById('container')
const root = createRoot(container)
root.render(<Example />)

// ReactDOM.render(<Example />, document.getElementById('container'))