使用joinjs繪製流程圖（五）-流程圖繪製

效果

程式碼

<template>
  <div class="app">
    <div ref="myholder" id="paper"></div>
  </div>
</template>

<script>
import * as joint from '@joint/core'
export default {
  data() {
    return {
      graph: null,
    }
  },
  mounted() {
    const namespace = joint.shapes
    var graph = new joint.dia.Graph({}, { cellNamespace: namespace })
    this.graph = graph

    var paper = new joint.dia.Paper({
      el: this.$refs.myholder,
      model: this.graph,
      width: 800,
      height: 300,
      cellViewNamespace: namespace,
      drawGrid: true,
      gridSize: 10,
      background: {
        color: 'rgba(0, 255, 0, 0.3)',
      },
      // 禁止互動
      interactive: false, // disable default interaction (e.g. dragging)
      // 當mousemove事件的數量超過clickThreshold時，在mouseup之後不會觸發pointerclick事件
      clickThreshold: 10,
    })
    paper.on('element:pointerclick', function (elementView) {
      console.log(elementView)
      // var currentElement = elementView.model
      // currentElement.attr('body/stroke', 'orange')
    })

    const node1 = this.drawRect({ x: 50, y: 30 }, '流程-1')
    const node2 = this.drawRect({ x: 200, y: 30 }, '流程-2')
    const node3 = this.drawRect({ x: 350, y: 30 }, '流程-3')
    const node4 = this.drawRect({ x: 500, y: 30 }, '流程-4')
    const node5 = this.drawRect({ x: 50, y: 100 }, '流程-1.1')
    const node6 = this.drawRect({ x: 350, y: 100 }, '流程-2.1')
    const node7 = this.drawRect({ x: 350, y: 150 }, '流程-2.2')

    const node2_to_node6_vetices = [new joint.g.Point(250, 100)]
    const node2_to_node7_vetices = [new joint.g.Point(250, 150)]

    this.drawLine(node1, node2)
    this.drawLine(node2, node3)
    this.drawLine(node3, node4)
    this.drawLine(node1, node5)
    this.drawLine(node2, node6, node2_to_node6_vetices)
    this.drawLine(node2, node7, node2_to_node7_vetices)

    // 雙擊元素時觸發
    // paper.on('element:pointerdblclick', function (elementView) {
    //   console.log(elementView)
    //   var currentElement = elementView.model
    //   console.log('currentElement:', currentElement)
    //   currentElement.attr('body/stroke', 'orange')
    // })

    // 單擊元素時觸發
    // paper.on('element:pointerclick', function (elementView) {
    //   console.log(elementView)
    //   // var currentElement = elementView.model
    //   // currentElement.attr('body/stroke', 'orange')
    // })
  },
  methods: {
    drawRect({ x, y }, text) {
      var rect = new joint.shapes.standard.Rectangle()
      rect.position(x, y)
      rect.resize(100, 40)
      rect.attr({
        body: {
          fill: '#2c3e50',
        },
        label: {
          text,
          fill: '#3498DB',
          fontSize: 18,
          fontWeight: 'bold',
          fontVariant: 'Microsoft YaHei',
        },
      })
      rect.addTo(this.graph)
      return rect
    },
    drawLine(node1, node2, vertices) {
      var link = new joint.shapes.standard.Link()
      link.source(node1)
      link.target(node2)
      link.addTo(this.graph)

      if (vertices) {
        link.vertices(vertices)
        link.router('orthogonal')
        // link.connector('rounded')
      }
      // link.vertices([
      //   new joint.g.Point(250, 100),
      //   new joint.g.Point(280, 100),
      //   new joint.g.Point(300, 120),
      // ])
      //
      link.attr({
        line: {
          stroke: 'gray',
        },
      })
    },
  },
}
</script>

<style lang="less" scoped>
#paper {
  border: 1px solid;
}
</style>

參考文件

• https://blog.csdn.net/qq_39324050/article/details/109530753
• https://blog.csdn.net/qq_39324050/article/details/108617567