4f:I[707087,["/_next/static/immutable/chunks/2985g-hklwiee.js","/_next/static/immutable/chunks/0qkc3dps_9x_i.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3thksmxn95rly.js","/_next/static/immutable/chunks/2ocpj6i2oorb_.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/0agonoz1szsjm.js","/_next/static/immutable/chunks/1r51enyhosz-u.js","/_next/static/immutable/chunks/0krdn-21gkgjt.js","/_next/static/immutable/chunks/3qfn9_v7pj_rb.js","/_next/static/immutable/chunks/0w75qangey2ys.js","/_next/static/immutable/chunks/13f5hjswluuex.js","/_next/static/immutable/chunks/0a8eymjz3e95j.js"],"RegistryDependencies"] 50:I[512940,["/_next/static/immutable/chunks/2985g-hklwiee.js","/_next/static/immutable/chunks/0qkc3dps_9x_i.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3thksmxn95rly.js","/_next/static/immutable/chunks/2ocpj6i2oorb_.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/0agonoz1szsjm.js","/_next/static/immutable/chunks/1r51enyhosz-u.js","/_next/static/immutable/chunks/0krdn-21gkgjt.js","/_next/static/immutable/chunks/3qfn9_v7pj_rb.js","/_next/static/immutable/chunks/0w75qangey2ys.js","/_next/static/immutable/chunks/13f5hjswluuex.js","/_next/static/immutable/chunks/0a8eymjz3e95j.js"],"Installation"] 51:I[314491,["/_next/static/immutable/chunks/2985g-hklwiee.js","/_next/static/immutable/chunks/0qkc3dps_9x_i.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3thksmxn95rly.js","/_next/static/immutable/chunks/2ocpj6i2oorb_.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/0agonoz1szsjm.js","/_next/static/immutable/chunks/1r51enyhosz-u.js","/_next/static/immutable/chunks/0krdn-21gkgjt.js","/_next/static/immutable/chunks/3qfn9_v7pj_rb.js","/_next/static/immutable/chunks/0w75qangey2ys.js","/_next/static/immutable/chunks/13f5hjswluuex.js","/_next/static/immutable/chunks/0a8eymjz3e95j.js"],"FilesView"] 52:T192d,"use client"; import { useEffect, useRef, useState } from "react"; import { motion, useReducedMotion } from "motion/react"; const DISCLOSE = { type: "spring", stiffness: 150, damping: 27, mass: 1 } as const; const CROSSFADE = { type: "spring", stiffness: 260, damping: 34, mass: 0.8 } as const; export type UseHideOnScrollOptions = { hideAfter?: number; revealAfter?: number; topGuard?: number; pinned?: boolean; disabled?: boolean; }; export type UseHideOnScrollResult = { ref: React.RefObject; hidden: boolean; atTop: boolean; }; export function useHideOnScroll({ hideAfter = 14, revealAfter = 10, topGuard = 24, pinned = false, disabled = false, }: UseHideOnScrollOptions = {}): UseHideOnScrollResult { const ref = useRef(null); const frame = useRef(0); const last = useRef(0); const accum = useRef(0); const held = useRef(pinned || disabled); held.current = pinned || disabled; const [hidden, setHidden] = useState(false); const [atTop, setAtTop] = useState(true); const down = Math.max(1, hideAfter); const up = Math.max(1, revealAfter); const guard = Math.max(0, topGuard); useEffect(() => { if (!pinned && !disabled) return; accum.current = 0; setHidden(false); }, [pinned, disabled]); useEffect(() => { const el = ref.current; const target: EventTarget = el ?? window; const readY = () => (el ? el.scrollTop : window.scrollY); const readMax = () => el ? el.scrollHeight - el.clientHeight : document.documentElement.scrollHeight - window.innerHeight; const evaluate = () => { frame.current = 0; const max = readMax(); const y = readY(); if (max <= guard) { accum.current = 0; last.current = y; setAtTop((prev) => (prev ? prev : true)); setHidden((prev) => (prev ? false : prev)); return; } if (y < 0 || y > max) return; const dy = y - last.current; last.current = y; const top = y <= guard; setAtTop((prev) => (prev === top ? prev : top)); if (held.current || top) { accum.current = 0; setHidden((prev) => (prev ? false : prev)); return; } if (dy === 0) return; if (dy > 0 !== accum.current > 0) accum.current = 0; accum.current += dy; if (accum.current >= down) { accum.current = 0; setHidden((prev) => (prev ? prev : true)); } else if (accum.current <= -up) { accum.current = 0; setHidden((prev) => (prev ? false : prev)); } }; const schedule = () => { if (frame.current) return; frame.current = requestAnimationFrame(evaluate); }; last.current = readY(); evaluate(); target.addEventListener("scroll", schedule, { passive: true }); window.addEventListener("resize", schedule); let observer: ResizeObserver | null = null; if (el && typeof ResizeObserver !== "undefined") { observer = new ResizeObserver(schedule); observer.observe(el); } return () => { target.removeEventListener("scroll", schedule); window.removeEventListener("resize", schedule); observer?.disconnect(); if (frame.current) cancelAnimationFrame(frame.current); frame.current = 0; }; }, [down, up, guard]); return { ref, hidden, atTop }; } export type HideOnScrollProps = { bar: React.ReactNode; children: React.ReactNode; barHeight?: number; hideAfter?: number; revealAfter?: number; topGuard?: number; pinned?: boolean; maxHeight?: number; label?: string; onHiddenChange?: (hidden: boolean) => void; className?: string; }; export function HideOnScroll({ bar, children, barHeight = 44, hideAfter = 14, revealAfter = 10, topGuard = 24, pinned = false, maxHeight = 320, label = "Scrollable content", onHiddenChange, className = "", }: HideOnScrollProps) { const [focusWithin, setFocusWithin] = useState(false); const { ref, hidden, atTop } = useHideOnScroll({ hideAfter, revealAfter, topGuard, pinned: pinned || focusWithin, }); const reduced = useReducedMotion(); const slide = reduced ? { duration: 0 } : DISCLOSE; const fade = reduced ? { duration: 0 } : CROSSFADE; const seen = useRef(hidden); useEffect(() => { if (seen.current === hidden) return; seen.current = hidden; onHiddenChange?.(hidden); }, [hidden, onHiddenChange]); return (

setFocusWithin(true)} onBlur={() => setFocusWithin(false)} style={{ height: barHeight }} initial={false} animate={{ y: hidden ? -barHeight : 0 }} transition={slide} className="absolute inset-x-0 top-0 z-10 flex items-center gap-2 bg-white px-3 dark:bg-[#1D1D1A]" > {bar}

{children}

); } 4b:["$","div",null,{"className":"flex flex-col gap-12","children":[["$","div",null,{"className":"pt-10 flex flex-col gap-4","children":[["$","ul",null,{"className":"flex gap-2 flex-wrap","children":[["$","li","motion",{"children":["$","a",null,{"href":"https://www.npmjs.com/package/motion","target":"_blank","rel":"noopener noreferrer","className":"rounded-md border p-2 text-sm flex items-center gap-1 ","children":[["$","svg",null,{"viewBox":"0 0 24 24","className":"size-3","children":["$","path",null,{"d":"M1.763 0C.786 0 0 .786 0 1.763v20.474C0 23.214.786 24 1.763 24h20.474c.977 0 1.763-.786 1.763-1.763V1.763C24 .786 23.214 0 22.237 0zM5.13 5.323l13.837.019-.009 13.836h-3.464l.01-10.382h-3.456L12.04 19.17H5.113z","fill":"currentColor"}]}],["$","span",null,{"className":"text-xs font-medium","children":"motion"}]]}]}]]}],["$","$L4f",null,{"registryDependencies":[]}]]}],["$","$L50",null,{"sourceUrl":"https://motion-lexicon.pages.dev/r/hide-on-scroll.json","proxyUrl":"https://shadcnregistry.com/r/motion-lexicon/hide-on-scroll","itemId":"@motion-lexicon/hide-on-scroll"}],["$","section",null,{"className":"flex flex-col gap-4","id":"files","children":[["$","h2",null,{"className":"text-lg md:text-2xl font-bold font-mono","children":"Files"}],["$","$L51",null,{"files":[{"path":"src/registry/components/hide-on-scroll.tsx","content":"$52","type":"registry:ui","target":"components/motion-lexicon/hide-on-scroll.tsx"}]}]]}],"$L53"]}]

Hide On Scroll

Installation

Files

components

Styles