vue-draggable-resizable插件实现ant-design列宽支持调整

代码：

<template>
  <a-table
    bordered
    :columns="columns"
    :components="components"
    :data-source="data"
    :row-selection="{ selectedRowKeys: selectedRowKeys, onChange: onSelectChange }"
  >
    <template v-slot:action>
      <a href="javascript:;">Delete</a>
    </template>
  </a-table>
</template>

<script>
import Vue from 'vue'
import VueDraggableResizable from 'vue-draggable-resizable'

Vue.component('vue-draggable-resizable', VueDraggableResizable)
const columns = [
  {
    title: 'Date',
    dataIndex: 'date',
     200
  },
  {
    title: 'Amount',
    dataIndex: 'amount',
     100
  },
  {
    title: 'Type',
    dataIndex: 'type',
     100
  },
  {
    title: 'Note',
    dataIndex: 'note',
     100
  },
  {
    title: 'Action',
    key: 'action',
    scopedSlots: { customRender: 'action' }
  }
]
const data = [
  {
    key: 0,
    date: '2018-02-11',
    amount: 120,
    type: 'income',
    note: 'transfer'
  },
  {
    key: 1,
    date: '2018-03-11',
    amount: 243,
    type: 'income',
    note: 'transfer'
  },
  {
    key: 2,
    date: '2018-04-11',
    amount: 98,
    type: 'income',
    note: 'transfer'
  }
]
const draggingMap = {}
columns.forEach(col => {
  draggingMap[col.key] = col.width
})
const draggingState = Vue.observable(draggingMap)
const resizeableTitle = (h, props, children) => {
  let thDom = null
  const { key, ...restProps } = props
  let col = {}
  if (key === 'selection-column') {
    //支持复选框
    col = {
      dataIndex: 'selection-column',
      key: 'selection-column',
       40
    }
  } else {
    col = columns.find(col => {
      const k = col.dataIndex || col.key
      return k === key
    })
  }

  if (!col.width) {
    return <th {...restProps}>{children}</th>
  }
  const onDrag = x => {
    draggingState[key] = 0
    col.width = Math.max(x, 1)
  }

  const onDragstop = () => {
    draggingState[key] = thDom.getBoundingClientRect().width
  }
  return (
    <th {...restProps} v-ant-ref={r => (thDom = r)} width={col.width} class="resize-table-th">
      {children}
      <vue-draggable-resizable
        key={col.key}
        class="table-draggable-handle"
        w={10}
        x={draggingState[key] || col.width}
        z={1}
        axis="x"
        draggable={true}
        resizable={false}
        onDragging={onDrag}
        onDragstop={onDragstop}
      ></vue-draggable-resizable>
    </th>
  )
}
export default {
  name: 'App',
  data() {
    return {
      data,
      columns,
      components: null,
      selectedRowKeys: []
    }
  },
  created() {
    this.components = {
      header: {
        cell: resizeableTitle
      }
    }
  },
  methods: {
    onSelectChange(selectedRowKeys) {
      console.log('selectedRowKeys changed: ', selectedRowKeys)
      this.selectedRowKeys = selectedRowKeys
    }
  }
}
</script>
<style lang="less">
.resize-table-th {
  position: relative;
  .table-draggable-handle {
    height: 100% !important;
    bottom: 0;
    left: auto !important;
    right: -5px;
    cursor: col-resize;
    touch-action: none;
    transform: none !important;
    position: absolute;
  }
}
</style>

效果：