react-bkoi-gl/dist/components/scale-control.js

React components for Barikoi GL JS

import { useEffect, useRef, memo } from "react";
import { applyReactStyle } from "../utils/apply-react-style.js";
import { useControl } from "./use-control.js";
function _ScaleControl(props) {
  const ctrl = useControl(_ref => {
    let {
      mapLib
    } = _ref;
    return new mapLib.ScaleControl(props);
  }, {
    position: props.position
  });
  const propsRef = useRef(props);
  const prevProps = propsRef.current;
  propsRef.current = props;
  const {
    style
  } = props;
  if (props.maxWidth !== undefined && props.maxWidth !== prevProps.maxWidth) {
    ctrl.options.maxWidth = props.maxWidth;
  }
  if (props.unit !== undefined && props.unit !== prevProps.unit) {
    ctrl.setUnit(props.unit);
  }
  useEffect(() => {
    applyReactStyle(ctrl._container, style);
  }, [style]);
  return null;
}
export const ScaleControl = memo(_ScaleControl);
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