Vue中实现在线画流程图的方法
作者:牛老师讲GIS
最近在调研一些在线文档的实现,包括文档编辑器、在线思维导图、在线流程图等,本文分享在Vue框架下基于metaeditor-mxgraph实现在线流程图,感兴趣的朋友一起看看吧
概述
最近在调研一些在线文档的实现,包括文档编辑器、在线思维导图、在线流程图等,前面的文章基于语雀编辑器的在线文档编辑与查看实现了文档编辑器。在本文,分享在Vue框架下基于metaeditor-mxgraph
实现在线流程图。
实现效果
实现
1. 添加依赖
{ "metaeditor-mxgraph": "^2.0.7" }
2. 编辑器简介
metaeditor-mxgraph
,图元编辑器,支持独立的流程图编辑器,以及 DrawIO 嵌入方案。文档地址为:https://npm.io/package/metaeditor-mxgraph。
3. 编辑器实现
<template> <div class="flow-chart" ref="flowChart"></div> </template> <script> import 'metaeditor-mxgraph/assets/index.scss' import { MetaEditor } from 'metaeditor-mxgraph' const { MetaGraphEditor, getLanguage, stringToXml, xmlToString } = MetaEditor export default { props: { chartData: { type: Object, default: () => null, }, }, mounted() { this.$nextTick(() => { this.init() }) }, watch: { chartData() { this.init() }, }, unmounted() { this.destroy() }, methods: { destroy() { if (window.metaGraphEditor) window.metaGraphEditor.destroy() window.metaGraphEditor = null }, init() { this.destroy() const xml = stringToXml(this.chartData || '<mxGraphModel></mxGraphModel>') const dom = this.$refs.flowChart const metaGraphEditor = new MetaGraphEditor({ container: dom, }) const lan = getLanguage('zh') metaGraphEditor.init(lan, xml) window.metaGraphEditor = metaGraphEditor }, }, } </script> <style scoped lang="scss"> .flow-chart { width: 100%; height: 100%; } </style>
需要注意的是,编辑器默认是绝对定位的,想要跟随设定dom大小,需要设置其样式为:
.metagraph-container { position: relative; width: 100%; height: 100%; user-select: none; }
设置完样式后,菜单的位置会出错,这个还没修复,使用时请注意。
4. 文档预览
<template> <div class="flow-chart" ref="flowChart"></div> </template> <script> import 'metaeditor-mxgraph/assets/index.scss' import { MetaEditor } from 'metaeditor-mxgraph' const { MetaGraphViewer, stringToXml} = MetaEditor export default { props: { chartData: { type: Object, default: () => null, }, }, mounted() { this.$nextTick(() => { this.init() }) }, watch: { chartData() { this.init() }, }, methods: { init() { const xml = stringToXml(this.chartData || '<mxGraphModel></mxGraphModel>') const dom = this.$refs.flowChart const metaGraphEditor = new MetaGraphViewer({ xml: xml, }) const { offsetWidth, offsetHeight } = dom const svg = metaGraphEditor.renderSVGDom(null, 1, 1, { width: offsetWidth, height: offsetHeight, }) dom.appendChild(svg) }, }, } </script> <style scoped lang="scss"> .flow-chart { width: 100%; height: 100%; } </style>
到此这篇关于Vue中实现在线画流程图实现的文章就介绍到这了,更多相关Vue画流程图内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!