如何在滚动上更改ngx数据表列的样式？

import { Component, OnInit } from '@angular/core';
import { DatatableComponent } from '@swimlane/ngx-datatable';
import '@swimlane/ngx-datatable/index.css';

columnStyles = {};

<ngx-datatable
  [rows]="data"
  [columns]="columns"
  [columnStyles]="columnStyles"
  (scroll)="onTableScroll($event)">
</ngx-datatable>

onTableScroll(event) {
  const scrollLeft = event.target.scrollLeft;
  this.columnStyles = {
    'transform': `translateX(-${scrollLeft}px)`
  };
}