52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
import { useEffect } from 'react';
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import { changeZoomFactor, ZOOM } from 'util/zoomWindow';
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export default function useHover(ref) {
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useEffect(() => {
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const handleKeyPress = e => {
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if (e.ctrlKey && !e.shiftKey) {
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switch (e.code) {
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case 'NumpadAdd':
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case 'Equal':
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e.preventDefault();
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changeZoomFactor(ZOOM.INCREMENT);
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break;
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case 'NumpadSubtract':
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case 'Minus':
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e.preventDefault();
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changeZoomFactor(ZOOM.DECREMENT);
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break;
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case 'Numpad0':
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case 'Digit0':
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e.preventDefault();
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changeZoomFactor(ZOOM.RESET);
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break;
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default:
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// Do nothing
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break;
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}
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}
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};
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window.addEventListener('keydown', handleKeyPress);
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return () => window.removeEventListener('keydown', handleKeyPress);
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}, []);
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useEffect(() => {
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const handleWheel = e => {
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if (e.ctrlKey && !e.shiftKey) {
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if (e.deltaY < 0) {
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changeZoomFactor(ZOOM.INCREMENT);
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} else {
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changeZoomFactor(ZOOM.DECREMENT);
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}
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}
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};
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window.addEventListener('wheel', handleWheel);
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return () => window.removeEventListener('wheel', handleWheel);
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}, []);
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useEffect(() => {
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changeZoomFactor(ZOOM.LOAD_FROM_LOCAL_STORAGE);
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}, []);
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}
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