Bpmn.js使用（仅查看版）

下载

npm install bpmn-js

创建一个 Dom 节点来挂载画布元素。

<a-tabs v-model:activeKey="activeKey" @change="tabsChange">
 <a-tab-pane key="1" tab="审批记录">
    <a-table :pagination="false" :columns="columns" :dataSource="tableList" bordered></a-table>
  </a-tab-pane>
  <a-tab-pane key="2" tab="审批流程图">
    <div id="canvas" style="width: 90%; height: 60vh; border: 1px solid #ddd;"></div>
  </a-tab-pane>
</a-tabs>

import { createVNode, ref, markRaw, nextTick } from 'vue';
import BpmnJS from 'bpmn-js';

bpmnXml =  '';
  bpmnModeler: any;

  tabsChange(activeKey) {
    // 解决使用a-tabs 渲染失败
    if(activeKey == 2) {
      nextTick(()=>{
        // 建模
        const containerEl = document.getElementById('canvas')
        this.bpmnModeler = markRaw(new BpmnJS({ container: containerEl }));
        this.createNewDiagram()
      })
    }
    
  }
  
async createNewDiagram() {
    try {
      const { warnings } = await this.bpmnModeler.importXML(this.bpmnXml)
      // 调整在正中间
      this.bpmnModeler.get('canvas').zoom('fit-viewport', 'auto')
    } catch (err: any) {
      console.log(err.message, err.warnings)
    }
  }