); } /** For a control inside a panel (a COLLAPSE button): this panel's size and its collapse and expand. */ function useResizablePanel() { const group = React.useContext(GroupContext); const i = React.useContext(IndexContext); const size = group?.sizes[i] ?? 0; return { size, collapsed: group ? size <= (group.specs.current[i]?.collapsedSize ?? 0) : false, collapse: () => group?.collapse(i), expand: () => group?.expand(i), }; } function ResizableHandle({ withHandle = false, label = "Resize", className, ...props }: React.ComponentProps<"div"> & { withHandle?: boolean; label?: string }) { const group = React.useContext(GroupContext); const h = React.useContext(IndexContext); const [dragging, setDragging] = React.useState(false); const start = React.useRef<{ pos: number; left: number } | null>(null); if (!group) return null; const vertical = group.direction === "vertical"; const left = group.sizes[h] ?? 0; const spec = group.specs.current[h]; return (

{ e.currentTarget.setPointerCapture(e.pointerId); start.current = { pos: vertical ? e.clientY : e.clientX, left }; setDragging(true); }} onPointerMove={(e) => { const s = start.current; const box = group.groupRef.current?.getBoundingClientRect(); if (!s || !box) return; const span = vertical ? box.height : box.width; const rtl = !vertical && getComputedStyle(e.currentTarget).direction === "rtl"; const delta = (((vertical ? e.clientY : e.clientX) - s.pos) / span) * 100 * (rtl ? -1 : 1); group.resize(h, s.left + delta); }} onPointerUp={() => { start.current = null; setDragging(false); }} onPointerCancel={() => { start.current = null; setDragging(false); }} onDoubleClick={() => group.reset(h)} onKeyDown={(e) => { const back = vertical ? "ArrowUp" : "ArrowLeft"; const fwd = vertical ? "ArrowDown" : "ArrowRight"; if (e.key === back || e.key === fwd) { e.preventDefault(); group.resize(h, left + (e.key === fwd ? 2 : -2)); } else if (e.key === "Home") { e.preventDefault(); group.collapse(h); } else if (e.key === "End") { e.preventDefault(); group.expand(h); } }} className={cn( `notchset-focus`, "group/handle relative flex flex-none touch-none items-center justify-center bg-[var(--notchset-rule,var(--border))] outline-none transition-colors duration-[120ms] ease-linear select-none hover:bg-foreground data-[dragging]:bg-primary [--notchset-focus-inset:-4px]", vertical ? "h-px w-full cursor-row-resize after:absolute after:inset-x-0 after:-inset-y-1.5" : "w-px cursor-col-resize after:absolute after:inset-y-0 after:-inset-x-1.5", className, )} {...props} > {withHandle && ( )}

); } export { ResizableHandle, ResizablePanel, ResizablePanelGroup, resetResizableLayout, useResizablePanel }; ``` ### lib/beautiful-ui/notchset/instrument.tsx ```tsx "use client"; import * as React from "react"; import { createPortal } from "react-dom"; import { cn } from "@/lib/utils"; /* * Notchset instrument parts, shared by every member of a pack: the node (a round light that reports * state), the legend printed above a control, the plate a key presses onto, the traced check, the * five-tick scanner, and the glyph flip that lands a changed label left to right. Nodes and checks * are inline SVG (round at every DPR); the CSS lives in the Notchset foundation. Also: the one motion * policy (reduced motion or a data-motion="off" ancestor), ref composition, the portal container * and the sound attributes every Notchset root carries. */ // --------------------------------------------------------------------------------------------- // Motion, refs, portals, sound // --------------------------------------------------------------------------------------------- /** * Whether motion is off for an element, kept live: it follows the OS reduced-motion setting and any * data-motion attribute change above it, so a preference switched mid-playback stops decoration at once. */ export function useMotionOff(ref: React.RefObject) { const [off, setOff] = React.useState(false); React.useEffect(() => { const read = () => setOff(motionOff(ref.current)); const r = requestAnimationFrame(read); const mq = window.matchMedia?.("(prefers-reduced-motion: reduce)"); mq?.addEventListener?.("change", read); const mo = new MutationObserver(read); mo.observe(document.documentElement, { attributes: true, attributeFilter: ["data-motion"], subtree: true }); return () => { cancelAnimationFrame(r); mq?.removeEventListener?.("change", read); mo.disconnect(); }; }, [ref]); return off; } /** * The microphone, or a rejection after `timeoutMs` (a prompt left open, a denied permission). A stream * that arrives after the timeout is stopped at once, so a late "Allow" never leaves the mic on. */ export function requestMic(timeoutMs = 5000): Promise { if (typeof navigator === "undefined" || !navigator.mediaDevices?.getUserMedia) return Promise.reject(new Error("no mic")); const ask = navigator.mediaDevices.getUserMedia({ audio: true }); return new Promise((resolve, reject) => { let late = false; const t = setTimeout(() => { late = true; reject(new Error("timeout")); }, timeoutMs); ask.then( (stream) => { clearTimeout(t); if (late) stream.getTracks().forEach((track) => track.stop()); else resolve(stream); }, (err) => { clearTimeout(t); reject(err); }, ); }); } /** True under prefers-reduced-motion or inside a data-motion="off" scope. Checked when an effect runs. */ export function motionOff(el: Element | null | undefined) { if (typeof window === "undefined") return true; if (window.matchMedia?.("(prefers-reduced-motion: reduce)").matches) return true; return Boolean(el?.closest('[data-motion="off"]')); } function assignRef(ref: React.Ref | undefined, node: T | null): () => void { if (typeof ref === "function") { const cleanup = ref(node); return typeof cleanup === "function" ? cleanup : () => ref(null); } if (ref) (ref as React.RefObject).current = node; return () => { if (ref) (ref as React.RefObject).current = null; }; } /** * Puts text on the clipboard. Resolves true once it is there and false when the browser refuses (no * permission, an insecure page, no clipboard API), so a "copied" state is only ever shown for a copy. */ export async function copyText(text: string): Promise { try { await navigator.clipboard.writeText(text); return true; } catch { return false; } } /** The glide easing shared by travelling marks (selection blocks, highlights, runs). */ export const GLIDE = "cubic-bezier(.65,0,.35,1)"; /** Base UI's className may be a function of state: merges ours with it in either form. */ export const withClass = (base: string, className: string | ((state: S) => string | undefined) | undefined) => (state: S) => cn(base, typeof className === "function" ? className(state) : className); /** Composes two refs, keeping React 19 ref cleanups. */ export function useComposedRefs(a: React.Ref | undefined, b: React.Ref | undefined): React.RefCallback { return React.useCallback( (node: T | null) => { const release = [assignRef(a, node), assignRef(b, node)]; return () => release.forEach((f) => f()); }, [a, b], ); } /** * Runs each step on its own animation frame, in order (the first on the next frame), and returns one * cancel that stops whichever frame is pending. A no-op step just waits a frame: frames(set pre, wait, * go) lets the browser paint the start state before the transition begins. */ export function frames(...steps: (() => void)[]): () => void { let id = 0; let i = 0; const tick = () => { steps[i++]?.(); if (i < steps.length) id = requestAnimationFrame(tick); }; id = requestAnimationFrame(tick); return () => cancelAnimationFrame(id); } export const wait = () => {}; let idSeq = 0; /** A unique id for something the user creates (a milestone, a note): random where the browser can, else a counter. */ export const newId = () => (typeof crypto !== "undefined" && "randomUUID" in crypto ? crypto.randomUUID() : `id-${Date.now()}-${++idSeq}`); /** * True while an input method (Japanese, Chinese, Korean…) is composing: Enter, Tab and delimiters * then belong to the composition, not to the component. keyCode 229 covers Safari's late flag. */ export function composing(e: React.KeyboardEvent | KeyboardEvent) { const native = "nativeEvent" in e ? e.nativeEvent : e; return native.isComposing || native.keyCode === 229; } const hotkeyOwners = new Map(); let hotkeySeq = 0; /** * A page-wide shortcut ("/" or "mod+k", mod being ⌘ or Ctrl) with a single owner: when several * components claim the same key, only the one mounted last answers, so one press never opens two. * A plain key is ignored while typing in a field. */ export function useHotkey(combo: string | undefined, run: () => void) { const latest = useLatest(run); React.useEffect(() => { if (!combo) return; const me = ++hotkeySeq; const stack = hotkeyOwners.get(combo) ?? []; stack.push(me); hotkeyOwners.set(combo, stack); const mod = combo.startsWith("mod+"); const key = (mod ? combo.slice(4) : combo).toLowerCase(); const onKey = (e: KeyboardEvent) => { if (hotkeyOwners.get(combo)?.at(-1) !== me || e.key.toLowerCase() !== key) return; if (mod ? !(e.metaKey || e.ctrlKey) : e.metaKey || e.ctrlKey || e.altKey) return; if (!mod && (e.target as HTMLElement | null)?.closest("input, textarea, select, [contenteditable=true]")) return; e.preventDefault(); latest.current(); }; window.addEventListener("keydown", onKey); return () => { window.removeEventListener("keydown", onKey); const s = hotkeyOwners.get(combo) ?? []; s.splice(s.indexOf(me), 1); }; }, [combo, latest]); } /** Keeps the latest value in a ref, for callbacks read inside timers and animation frames. */ export function useLatest(value: T) { const ref = React.useRef(value); React.useLayoutEffect(() => { ref.current = value; }); return ref; } /* * Where Notchset overlays (menus, popovers, tooltips) portal to. Unset, document.body, as shadcn's * do. Provide an element to keep them inside a scoped theme: a preview, a widget, a shadow root. */ export const NotchsetPortalContext = React.createContext(null); export function useNotchsetPortal(): HTMLElement | undefined { return React.useContext(NotchsetPortalContext) ?? undefined; } const subscribeNothing = () => () => {}; /** * A scope that turns motion or sound off for everything inside it, popups included. A plain * data-motion="off" wrapper can't reach a menu that portals to the body; this one also gives its * overlays a portal host carrying the same preferences (inside any outer scope's host), so motionOff * and the cues see them there too. */ export function NotchsetScope({ motion, sound, children, ...props }: React.ComponentProps<"div"> & { motion?: "off"; sound?: "off" }) { const outer = React.useContext(NotchsetPortalContext); const [host, setHost] = React.useState(null); const client = React.useSyncExternalStore(subscribeNothing, () => true, () => false); return (

{children} {client && createPortal(

, outer ?? document.body)}

); } export { NOTCHSET_ROOT, OWN_SOUND } from "@/lib/beautiful-ui/notchset/root"; // --------------------------------------------------------------------------------------------- // Parts // --------------------------------------------------------------------------------------------- export type NodeState = "off" | "on" | "live" | "signal"; /** The node: a 9×9 ring whose dot blooms on (`on`), blinks (`live`) or turns signal. */ function Node({ state = "off", delay, className, style, ...props }: Omit, "children"> & { state?: NodeState; delay?: number }) { return ( ); } /** A small solid round mark (the node where a leader meets a popup, a pointer): SVG, round at every DPR. */ function Dot({ size = 7, className, style }: { size?: number; className?: string; style?: React.CSSProperties }) { return ( ); } /** The legend: a mono label above a control, with an optional node (or any trailing reading). */ function Legend({ label, node, children, className, ...props }: React.ComponentProps<"div"> & { label?: React.ReactNode; node?: NodeState }) { return (

{label} {(children != null || node) && ( {children} {node && } )}

); } /** A key on its plate: the plate is an offset frame behind the child; `--notchset-plate-color` tints it. */ function Plated({ className, children, ...props }: React.ComponentProps<"span">) { return ( {children} ); } /** * The success check. Mounted, it traces itself in over --notchset-check (instant under reduced * motion); pass `drawn` to drive the trace yourself. */ function Check({ drawn, size = 16 }: { drawn?: boolean; size?: number }) { return ( ); } /** The scanner: five 1px ticks fading in turn while something works (static, centre lit, when motion is off). */ function Scanner({ height = 12 }: { height?: number }) { return ( {[0.82, 0.66, 1, 0.66, 0.82].map((h, i) => ( ))} ); } // --------------------------------------------------------------------------------------------- // Glyph flip: each character cycles through glyphs and lands at 110 + i·14ms, left to right // --------------------------------------------------------------------------------------------- const GLYPHS = "ABCDEFGHJKLMNPRSTUVWXYZ0123456789#/+="; const STILL = new Set([" ", "·", "/", ".", ":"]); const FLIP_CHARS = 24; export function scramble(text: string, elapsed: number) { let out = ""; for (let i = 0; i < text.length; i++) { const ch = text[i]!; // Characters past the 24th land with the 24th, so a long label flips as briefly as a short one. out += STILL.has(ch) || elapsed >= 110 + Math.min(i, FLIP_CHARS) * 14 ? ch : GLYPHS[(Math.floor(elapsed / 36) * 5 + i * 11) % GLYPHS.length]; } return out; } /** * The text to show for `text`: when it changes, a few frames of glyphs that land left to right. * Runs on requestAnimationFrame only while a flip is active; the settled text is never state. Off * under reduced motion, inside data-motion="off" (pass the element) or with `off`. */ export function useGlyphFlip(text: string, { off = false, el }: { off?: boolean; el?: React.RefObject } = {}) { const [frame, setFrame] = React.useState<{ for: string; shown: string } | null>(null); const first = React.useRef(true); React.useEffect(() => { if (first.current) { first.current = false; return; } if (off || motionOff(el?.current)) return; let raf = 0; const t0 = performance.now(); const end = 110 + Math.min(text.length, FLIP_CHARS) * 14 + 40; const step = (now: number) => { const elapsed = now - t0; if (elapsed >= end) { setFrame(null); return; } setFrame({ for: text, shown: scramble(text, elapsed) }); raf = requestAnimationFrame(step); }; raf = requestAnimationFrame(step); return () => cancelAnimationFrame(raf); }, [text, off, el]); // Turned off mid-flip, the label shows its text at once (the cancelled frame never lingers). return !off && frame && frame.for === text ? frame.shown : text; } /** A label that flips when its text changes; screen readers read the final text only. */ function FlipText({ children, off, className, ref: refProp, ...props }: Omit, "children"> & { children: string; off?: boolean }) { const ref = React.useRef(null); const refs = useComposedRefs(refProp, ref); const shown = useGlyphFlip(children, { off, el: ref }); return ( {shown} {children} ); } // --------------------------------------------------------------------------------------------- // Sound: Notchset components announce cues; the page's beautiful-ui-sound layer (opt-in) plays them. // --------------------------------------------------------------------------------------------- /** The Notchset cues, in the shared sound layer's names (played in the mechanical voice). */ export const NOTCHSET_CUES = { tap: "tap", latch: "lock", signal: "destructive", confirm: "halt", done: "success", tick: "tick" } as const; export type NotchsetCue = keyof typeof NOTCHSET_CUES; export function playCue(el: Element | null, cue: NotchsetCue) { if (!el || typeof CustomEvent === "undefined" || el.closest('[data-sound="off"]')) return; el.dispatchEvent(new CustomEvent("beautiful-ui:sound", { bubbles: true, detail: { cue: NOTCHSET_CUES[cue] } })); } // --------------------------------------------------------------------------------------------- // Shortcuts: "⌘↵" → "Meta+Enter Control+Enter" (aria-keyshortcuts) // --------------------------------------------------------------------------------------------- const KEY_NAMES: Record = { "⌘": "Meta", "⌃": "Control", "⌥": "Alt", "⇧": "Shift", "↵": "Enter", "⏎": "Enter", "⎋": "Escape", "⌫": "Backspace", "⇥": "Tab", "␣": "Space" }; export function kbdToShortcut(kbd: string | undefined): string | undefined { if (!kbd) return undefined; const parts = [...kbd.replace(/\s+/g, "")].map((c) => KEY_NAMES[c] ?? c.toUpperCase()); if (!parts.length) return undefined; const combo = parts.join("+"); // ⌘ on a Mac is Ctrl elsewhere: announce both. return combo.includes("Meta") ? `${combo} ${combo.replace("Meta", "Control")}` : combo; } /** * Digits that roll: each digit is a 0–9 strip; the ones digit moves first and each digit to its left * 40ms later, counting digits only (620ms, a small overshoot). `delay` offsets the whole text. Other * characters (",", "$", "%", letters) sit still. Screen readers get the plain text. The one * implementation behind RollingNumber and the calendar's RollingLabel. */ export function DigitRoll({ text, height, delay = 0, className }: { text: string; height: number; delay?: number; className?: string }) { const chars = [...text]; let k = 0; const order = chars.map((_, i) => (/\d/.test(chars[chars.length - 1 - i]!) ? k++ : 0)).reverse(); return ( {text} {chars.map((d, i) => /\d/.test(d) ? ( {Array.from({ length: 10 }, (_, n) => ( {n} ))} ) : ( {d} ), )} ); } /** A number that rolls (DigitRoll at the readout's own size). `delay` offsets it (rows 60ms apart). */ function RollingNumber({ value, height = 32, delay = 0, className }: { value: string | number; height?: number; delay?: number; className?: string }) { return ; } export { Check, Dot, FlipText, Legend, Node, Plated, RollingNumber, Scanner }; ``` ### lib/beautiful-ui/notchset/root.ts ```tsx /* * Notchset's root attributes, server-safe (no client directive), so server components can spread * them too. Every Notchset root (and portalled popup) carries data-notchset (the motion policy's * scope), plays its own cues in the mechanical voice, and keeps the page's click layer out. */ export const NOTCHSET_ROOT = { "data-notchset": "", "data-sound": "none", "data-sound-voice": "analogue" } as const; /** On every interactive element: it plays its own cues, so the page's click layer adds no tap. */ export const OWN_SOUND = { "data-sound": "none" } as const; ``` The notchset foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://notchset.dev/r/notchset-foundation.json.