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useWindowSize.ts
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useWindowSize.ts
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/*
* Copyright (c) 2021. Łukasz Szwedt. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
import { useEffect, useState } from 'react';
export interface WindowSize {
width: number;
height: number;
}
/**
* A hook that returns the interior window visual viewport dimensions.
* @returns {WindowSize}
*/
const useWindowSize = (): WindowSize => {
// Gets screen dimensions object
const getSize = (): WindowSize => ({
width: window.innerWidth,
height: window.innerHeight
});
const [size, setSize] = useState<WindowSize>(getSize);
useEffect(() => {
// Handle resize event
const onResize = () => setSize(getSize());
// Create event listener
window.addEventListener('resize', onResize);
// Cleanup
return () => { window.removeEventListener('resize', onResize); }
}, []);
return size;
}