Dynamic Island

1"use client";
2 
3import { AnimatePresence, motion, useReducedMotion } from "framer-motion";
4import * as React from "react";
5 
6export type DynamicIslandSize =
7  | "compact"
8  | "default"
9  | "long"
10  | "tall"
11  | "large";
12 
13export type DynamicIslandProps = React.HTMLAttributes<HTMLDivElement> & {
14  /** Shape preset the island morphs to. */
15  size?: DynamicIslandSize;
16  /**
17   * Identity of the current content. Change it to cross-fade the inner view;
18   * defaults to `size` so each shape transitions its content.
19   */
20  presenceKey?: React.Key;
21};
22 
23const SIZES: Record<
24  DynamicIslandSize,
25  { width: number; height: number; radius: number }
26> = {
27  compact: { width: 140, height: 36, radius: 18 },
28  default: { width: 220, height: 44, radius: 22 },
29  long: { width: 360, height: 52, radius: 26 },
30  tall: { width: 260, height: 120, radius: 28 },
31  large: { width: 360, height: 200, radius: 36 },
32};
33 
34// Underdamped so the shell settles with the signature rubbery overshoot.
35const SHELL_SPRING = {
36  type: "spring" as const,
37  stiffness: 520,
38  damping: 32,
39};
40 
41const DynamicIsland = React.forwardRef<HTMLDivElement, DynamicIslandProps>(
42  (
43    { size = "default", presenceKey, className, style, children, ...props },
44    ref,
45  ) => {
46    const reduceMotion = useReducedMotion();
47    const dims = SIZES[size];
48    const key = presenceKey ?? size;
49 
50    return (
51      <motion.div
52        ref={ref}
53        data-slot="dynamic-island"
54        layout
55        initial={false}
56        animate={{
57          width: dims.width,
58          height: dims.height,
59          borderRadius: dims.radius,
60        }}
61        transition={reduceMotion ? { duration: 0 } : SHELL_SPRING}
62        className={`relative flex items-center justify-center overflow-hidden bg-black text-white shadow-xl ${className ?? ""}`}
63        style={{ maxWidth: "100%", ...style }}
64        {...(props as React.ComponentProps<typeof motion.div>)}
65      >
66        <AnimatePresence mode="popLayout" initial={false}>
67          <motion.div
68            key={key}
69            initial={
70              reduceMotion
71                ? false
72                : { opacity: 0, scale: 0.9, filter: "blur(4px)" }
73            }
74            animate={{ opacity: 1, scale: 1, filter: "blur(0px)" }}
75            exit={
76              reduceMotion
77                ? undefined
78                : { opacity: 0, scale: 0.9, filter: "blur(4px)" }
79            }
80            transition={{ duration: 0.2, ease: "easeOut" }}
81// … truncated