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Dedicated timer initialization for Carousel #25

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Dec 24, 2020
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Dedicated timer initialization for Carousel #25

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37 changes: 14 additions & 23 deletions src/index.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -23,40 +23,39 @@ const Carousel: React.FC<{
const [slides, setSlides] = useState(data);
const [swipe, setSwipe] = useState<number | undefined>();
const [focused, setFocused] = useState(true);
const [rnd, setRnd] = useState(0);

useEffect(() => {
window.addEventListener('blur', () => setFocused(false));
window.addEventListener('focus', () => setFocused(true));
const int = interval
? setInterval(() => setRnd(Math.random() * 10), interval)
: 0;

return () => {
window.removeEventListener('blur', () => setFocused(false));
window.removeEventListener('focus', () => () => setFocused(true));
if (interval) clearInterval(int);
};
}, []);

useEffect(() => {
if (data.length === 2) setSlides([...data, ...data]);
}, [data]);

useEffect(() => {
if (interval && focused) {
if (typeof swipe !== 'undefined') clearInterval(swipe);
setSwipe(setInterval(() => getNext(), interval));
}
}, [focused, move, interval]);
if (focused) getNext();
}, [rnd]);

const getPrev = () => {
setCurrent(current - 1 < 0 ? slides.length - 1 : current - 1);
setMove(move + 1);
const getPrev = (m = move, c = current) => {
setMove(m + 1);
setCurrent(c - 1 < 0 ? data.length - 1 : c - 1);
};

const getPos = (i: number) => {
setCurrent(i);
setMove(move - (i - current));
setCurrent(i);
};

const getNext = () => {
setCurrent(current + 1 >= slides.length ? 0 : current + 1);
const getNext = (m = move, c = current) => {
setMove(move - 1);
setCurrent(c + 1 >= data.length ? 0 : c + 1);
};

const getOffsets = () => {
Expand All @@ -72,14 +71,6 @@ const Carousel: React.FC<{
dot: (selected: boolean) => cx({ dot: true, selected }),
};

// for (const s of slides) {
// const img = new Image();
// img.onload = function () {
// if (this.width > maxW) setMaxW(this.width);
// };
// img.src = s;
// }

return (
<div className={styles.wrapper}>
<div
Expand Down