97 lines
2.5 KiB
TypeScript
97 lines
2.5 KiB
TypeScript
import React, {
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useRef,
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useLayoutEffect,
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useEffect,
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MutableRefObject,
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} from "react";
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import { useRecoilState } from "recoil";
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import { motion, AnimatePresence } from "framer-motion";
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import { iconPreviewOpenAtom } from "../../state/atoms";
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import DetailsPanel from "./DetailsPanel";
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import { IconEntry } from "../../lib";
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interface IconGridItemProps {
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index: number;
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spans: number;
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isDark: boolean;
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entry: IconEntry;
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originOffset: MutableRefObject<{ top: number; left: number }>;
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}
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const transition = { duration: 0.2 };
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const originIndex = 0;
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const delayPerPixel = 0.0004;
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const itemVariants = {
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hidden: { opacity: 0 },
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visible: (delayRef: any) => ({
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opacity: 1,
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transition: { delay: delayRef.current },
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}),
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};
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const IconGridItem: React.FC<IconGridItemProps> = (props) => {
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const { index, originOffset, entry } = props;
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const { name, Icon } = entry;
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const [open, setOpen] = useRecoilState(iconPreviewOpenAtom);
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const isOpen = open === name;
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const delayRef = useRef<number>(0);
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const offset = useRef({ top: 0, left: 0 });
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const ref = useRef<any>();
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const handleOpen = () => setOpen(isOpen ? false : name);
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// The measurement for all elements happens in the layoutEffect cycle
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// This ensures that when we calculate distance in the effect cycle
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// all elements have already been measured
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useLayoutEffect(() => {
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const element = ref.current;
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if (!element) return;
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offset.current = {
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top: element.offsetTop,
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left: element.offsetLeft,
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};
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if (index === originIndex) {
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originOffset.current = offset.current;
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}
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}, [index, originOffset]);
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useEffect(() => {
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const dx = Math.abs(offset.current.left - originOffset.current.left);
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const dy = Math.abs(offset.current.top - originOffset.current.top);
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const d = Math.sqrt(Math.pow(dx, 2) + Math.pow(dy, 2));
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delayRef.current = d * delayPerPixel;
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}, [originOffset]);
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return (
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<>
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<motion.div
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className="grid-item"
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key={name}
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ref={ref}
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tabIndex={0}
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style={{
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order: index,
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backgroundColor: isOpen ? "rgba(163, 159, 171, 0.1)" : undefined,
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}}
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custom={delayRef}
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transition={transition}
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variants={itemVariants}
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onKeyPress={(e) => e.key === "Enter" && handleOpen()}
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onClick={handleOpen}
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>
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<Icon />
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<p>{name}</p>
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</motion.div>
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<AnimatePresence initial={false}>
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{isOpen && <DetailsPanel {...props} />}
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</AnimatePresence>
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</>
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);
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};
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export default IconGridItem;
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