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[Perf] Sticker Set: Fix redundant renders in useWindowSize

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This commit is contained in:
Alexander Zinchuk 2023-07-05 13:15:18 +02:00
parent 6a2f06ea9c
commit aaf1e8be93
1 changed files with 9 additions and 10 deletions
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19
src/hooks/useWindowSize.ts
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@ -1,5 +1,4 @@
import { useEffect, useMemo, useState } from '../lib/teact/teact';
import type { ApiDimensions } from '../api/types';
import { throttle } from '../util/schedulers';
import windowSize from '../util/windowSize';
@ -7,20 +6,22 @@ import useDebouncedCallback from './useDebouncedCallback';
const THROTTLE = 250;
const useWindowSize = () => {
const [size, setSize] = useState<ApiDimensions>(windowSize.get());
export default function useWindowSize() {
const { width: initialWidth, height: initialHeight } = windowSize.get();
const [width, setWidth] = useState(initialWidth);
const [height, setHeight] = useState(initialHeight);
const [isResizing, setIsResizing] = useState(false);
const setIsResizingDebounced = useDebouncedCallback(setIsResizing, [setIsResizing], THROTTLE, true);
const result = useMemo(() => ({ ...size, isResizing }), [isResizing, size]);
useEffect(() => {
const throttledSetIsResizing = throttle(() => {
setIsResizing(true);
}, THROTTLE, true);
const throttledSetSize = throttle(() => {
setSize(windowSize.get());
const { width: newWidth, height: newHeight } = windowSize.get();
setWidth(newWidth);
setHeight(newHeight);
setIsResizingDebounced(false);
}, THROTTLE, false);
@ -36,7 +37,5 @@ const useWindowSize = () => {
};
}, [setIsResizingDebounced]);
return result;
};
export default useWindowSize;
return useMemo(() => ({ width, height, isResizing }), [height, isResizing, width]);
}