Shen Shuntian came up with a Vue component called Vue-tree-chart. With this component, you can create a flexible tree chart using Canvas and SVG. It is powered by D3.js. You can view its demo here.

Using Technique

Canvas version

• Use D3.js with Canvas to draw organizationChart more efficiently.
• Use unique-color manner to identify mouse click event in Canvas (you can refer to
  https://medium.com/@lverspohl/how-to-turn-d3-and-canvas-into-good-friends-b7a240a32915 to see detail)

SVG version

• Use D3 to calculate node & link positon
• Use Vue to handle dom element entering and leaving
• Use Vue slot to let users easily use their own data

Installation

You can install this package via Npm.

npm install @ssthouse/vue-tree-chart

Setup & Usage

After the installation, You’ve to import this component into your Project.

import VueTree from '@ssthouse/vue-tree-chart'
import Vue from 'vue'
Vue.component('vue-tree', VueTree)

basic usage

<template>
  <div class="container">
    <vue-tree
      style="width: 800px; height: 600px; border: 1px solid gray;"
      :dataset="sampleData"
      :config="treeConfig"
    >
    </vue-tree>
  </div>
</template>

<script>
export default {
  name: 'treemap',
  data() {
    return {
      sampleData: {
        value: '1',
        children: [
          { value: '2', children: [{ value: '4' }, { value: '5' }] },
          { value: '3' }
        ]
      },
      treeConfig: { nodeWidth: 120, nodeHeight: 80, levelHeight: 200 }
    }
  }
}
</script>

<style scoped lang="less">
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
}
</style>

Show collapsed node in a different style

<template>
  <div class="container">
    <vue-tree
      style="width: 800px; height: 600px; border: 1px solid gray;"
      :dataset="sampleData"
      :config="treeConfig"
    >
      <template v-slot:node="{ node, collapsed }">
        <span
          class="tree-node"
          :style="{ border: collapsed ? '2px solid grey' : '' }"
          >{{ node.value }}</span
        >
      </template>
    </vue-tree>
  </div>
</template>

<script>
export default {
  name: 'treemap',
  data() {
    return {
      sampleData: {
        value: '1',
        children: [
          { value: '2', children: [{ value: '4' }, { value: '5' }] },
          { value: '3' }
        ]
      },
      treeConfig: { nodeWidth: 120, nodeHeight: 80, levelHeight: 200 }
    }
  }
}
</script>

<style scoped lang="less">
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tree-node {
  display: inline-block;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: antiquewhite;
  text-align: center;
  line-height: 28px;
}
</style>

Props

Name	Type	Default	Description
dataset	[Object,Array]	null	nested tree data or an array of nested tree (multi root tree)
config	Object	{nodeWidth: 100, nodeHeight: 100, levelHeight: 200}	nodeWidth and nodeHeight config the tree node size. levelHeight is tree row height
linkStyle	String	‘curve’	control link style, options: ‘curve’ or ‘straight’
direction	string	‘vertical’	control tree chart direction, options: ‘vertical’ or ‘horizontal’
collapse-enabled	Boolean	true	Control whether when clicking on a node it collapses its children

This package has many options with code examples. If you want to dig more then please visit its complete documentation GitHub.