main
Last change
on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
Update repo after prototype presentation
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100644
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File size:
991 bytes
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1 | import { useEffect, useRef, useState } from 'react';
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2 | import ResizeObserver from 'resize-observer-polyfill';
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3 | var useMeasureDirty = function (ref) {
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4 | var frame = useRef(0);
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5 | var _a = useState({
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6 | width: 0,
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7 | height: 0,
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8 | top: 0,
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9 | left: 0,
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10 | bottom: 0,
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11 | right: 0,
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12 | }), rect = _a[0], set = _a[1];
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13 | var observer = useState(function () {
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14 | return new ResizeObserver(function (entries) {
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15 | var entry = entries[0];
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16 | if (entry) {
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17 | cancelAnimationFrame(frame.current);
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18 | frame.current = requestAnimationFrame(function () {
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19 | if (ref.current) {
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20 | set(entry.contentRect);
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21 | }
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22 | });
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23 | }
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24 | });
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25 | })[0];
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26 | useEffect(function () {
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27 | observer.disconnect();
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28 | if (ref.current) {
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29 | observer.observe(ref.current);
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30 | }
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31 | }, [ref]);
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32 | return rect;
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33 | };
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34 | export default useMeasureDirty;
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