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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | 1x 1x 1x 1x 1x 1x 1x | import { useEffect, useState } from 'react';
import { useMapContext } from '@uiw/react-baidu-map-map';
import { useProperties, useVisiable } from '@uiw/react-baidu-map-utils';
import { ScaleControlProps } from './';
export interface UseScaleControl extends ScaleControlProps {}
export function useScaleControl(props = {} as UseScaleControl) {
const [scaleControl, setScaleControl] = useState<BMap.ScaleControl>();
const { anchor, offset } = props;
const { map } = useMapContext();
useEffect(() => {
if (map && !scaleControl) {
const instance = new BMap.ScaleControl({
anchor: anchor || BMAP_ANCHOR_TOP_LEFT,
offset,
});
map.addControl(instance);
setScaleControl(instance);
}
return () => {
if (map && scaleControl) {
try {
map.removeControl(scaleControl);
} catch (error) {}
}
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [map, scaleControl]);
useVisiable(scaleControl!, props);
useProperties<BMap.ScaleControl, UseScaleControl>(scaleControl!, props, ['Anchor', 'Offset', 'Unit']);
return {
scaleControl,
setScaleControl,
};
}
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