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The rim is a curved lens, so content near the edges is * pulled inward, while the flat middle stays clear. * * Refraction is an SVG displacement map used as a backdrop-filter, which only * Chromium supports. Other browsers get a frosted fallback with the same rim. */ const SAMPLES = 128 const INDEX_OF_REFRACTION = 1.5 // convex squircle: flat in the middle, rounding off toward the rim const surface = (x: number) => Math.pow(1 - Math.pow(1 - x, 4), 0.25) // how far a straight-down ray is bent sideways at each point across the rim function rimProfile(bezel: number) { const profile = new Float32Array(SAMPLES) for (let i = 0; i < SAMPLES; i++) { const x = i / (SAMPLES - 1) const a = Math.max(x - 0.001, 0) const b = Math.min(x + 0.001, 1) const slope = (surface(b) - surface(a)) / (b - a) const incident = Math.atan(slope) const refracted = Math.asin(Math.sin(incident) / INDEX_OF_REFRACTION) const thickness = bezel * (0.25 + surface(x)) profile[i] = thickness * Math.tan(incident - refracted) } return profile } type DisplacementMap = { url: string; scale: number } const maps = new Map() function displacementMap( width: number, height: number, radius: number, bezel: number, magnify: number ): DisplacementMap { const key = [width, height, radius, bezel, magnify].join(":") const cached = maps.get(key) if (cached) return cached const profile = rimProfile(bezel) const dx = new Float32Array(width * height) const dy = new Float32Array(width * height) let max = 0 for (let j = 0; j < height; j++) { for (let i = 0; i < width; i++) { // signed distance to a rounded rectangle, and the outward normal const px = i + 0.5 - width / 2 const py = j + 0.5 - height / 2 const qx = Math.abs(px) - width / 2 + radius const qy = Math.abs(py) - height / 2 + radius const inside = -(Math.hypot(Math.max(qx, 0), Math.max(qy, 0)) + Math.min(Math.max(qx, qy), 0) - radius) let nx = 0 let ny = 0 if (qx > 0 && qy > 0) { const length = Math.hypot(qx, qy) || 1 nx = (qx / length) * Math.sign(px) ny = (qy / length) * Math.sign(py) } else if (qx > qy) nx = Math.sign(px) else ny = Math.sign(py) let x = -px * magnify let y = -py * magnify if (inside >= 0 && inside < bezel) { // sample inward, so the rim shows what's just inside the edge const shift = profile[Math.round((inside / bezel) * (SAMPLES - 1))] x -= nx * shift y -= ny * shift } const k = j * width + i dx[k] = x dy[k] = y max = Math.max(max, Math.abs(x), Math.abs(y)) } } const canvas = document.createElement("canvas") canvas.width = width canvas.height = height const context = canvas.getContext("2d") if (!context) return { url: "", scale: 0 } const image = context.createImageData(width, height) for (let k = 0; k < width * height; k++) { // 128 is "no shift"; red moves along x, green along y image.data[k * 4] = 128 + (dx[k] / (max || 1)) * 127 image.data[k * 4 + 1] = 128 + (dy[k] / (max || 1)) * 127 image.data[k * 4 + 2] = 128 image.data[k * 4 + 3] = 255 } context.putImageData(image, 0, 0) const map = { url: canvas.toDataURL(), scale: max * 2 } if (maps.size > 48) maps.delete(maps.keys().next().value!) maps.set(key, map) return map } // only Chromium can use an SVG filter as a backdrop-filter function canRefract() { const nav = navigator as Navigator & { userAgentData?: { brands: { brand: string }[] } } if (nav.userAgentData) { return nav.userAgentData.brands.some((b) => b.brand === "Chromium") } return /Chrome\/\d+/.test(nav.userAgent) && !/Firefox|FxiOS/.test(nav.userAgent) } const noopSubscribe = () => () => {} function useCanRefract() { return React.useSyncExternalStore(noopSubscribe, canRefract, () => false) } type LiquidGlassProps = React.ComponentProps<"div"> & { /** width of the curved rim in px, defaults to the corner radius (max 24) */ bezel?: number /** 0 is flat glass, 1 is the full lens; pass a motion value to animate it */ refraction?: number | MotionValue /** zooms the middle like a magnifier, 0 to 0.3 */ magnify?: number /** blur behind the glass in px */ frost?: number /** a color mixed over the glass, e.g. for a tinted primary button */ tint?: string /** * fades the whole pane in and out. Never fade a parent of liquid glass * instead: an ancestor with opacity cuts the glass off from what's behind it. */ presence?: number | MotionValue } function LiquidGlass({ bezel, refraction = 1, magnify = 0, frost = 1, tint, presence = 1, className, children, ...props }: LiquidGlassProps) { const ref = React.useRef(null) const displaceRef = React.useRef(null) const id = `liquid-${React.useId().replace(/[^a-zA-Z0-9_-]/g, "")}` const canRefractHere = useCanRefract() // A fixed zero opts out of SVG backdrop sampling entirely. Native frosting avoids // clipped-backdrop seams when flat panes overlap and change stacking order. // Motion values still keep the map ready so they can animate away from zero. const refract = canRefractHere && (typeof refraction !== "number" || refraction > 0) const [shape, setShape] = React.useState<{ w: number; h: number; r: number }>() // the scale last written to the filter, so a no-op resize can put it back const applied = React.useRef(0) React.useEffect(() => { const node = ref.current if (!node || !refract) return const measure = () => { const w = Math.round(node.offsetWidth) const h = Math.round(node.offsetHeight) const raw = getComputedStyle(node).borderTopLeftRadius const value = parseFloat(raw) || 0 const r = Math.round( Math.min(raw.endsWith("%") ? (value / 100) * Math.min(w, h) : value, w / 2, h / 2) ) setShape((prev) => { if (prev?.w === w && prev.h === h && prev.r === r) { displaceRef.current?.setAttribute("scale", String(applied.current)) return prev } return { w, h, r } }) } // measure right away, then wait for resizing to settle before rebuilding the map let first = true let frame = 0 let timer = 0 const observer = new ResizeObserver(() => { if (first) { first = false measure() return } // until the new map is ready, the old one would bend the wrong pixels displaceRef.current?.setAttribute("scale", "0") window.clearTimeout(timer) timer = window.setTimeout(() => { frame = requestAnimationFrame(measure) }, 100) }) observer.observe(node) return () => { observer.disconnect() window.clearTimeout(timer) cancelAnimationFrame(frame) } }, [refract]) const map = React.useMemo(() => { if (!refract || !shape || shape.w < 2 || shape.h < 2) return undefined const rim = Math.max(1, Math.min(bezel ?? Math.min(shape.r, 24), shape.w / 2, shape.h / 2)) return displacementMap(shape.w, shape.h, shape.r, Math.round(rim), magnify) }, [bezel, magnify, refract, shape]) // animate refraction by scaling the filter, without rebuilding the map React.useEffect(() => { if (!map) return const apply = (v: number) => { applied.current = map.scale * v displaceRef.current?.setAttribute("scale", String(applied.current)) } if (typeof refraction === "number") { apply(refraction) return } apply(refraction.get()) return refraction.on("change", apply) }, [map, refraction]) const ownPresence = useMotionValue(isMotionValue(presence) ? 1 : presence) const visible = isMotionValue(presence) ? presence : ownPresence React.useEffect(() => { if (!isMotionValue(presence)) ownPresence.set(presence) }, [ownPresence, presence]) const rimOpacity = useTransform(visible, (v) => v * 0.95) const strength = isMotionValue(refraction) ? refraction.get() : refraction const backdrop = map ? `url(#${id})` : `blur(${Math.max(frost, 10)}px) saturate(1.6)` return (

:where(:not([data-glass-layer]))]:relative", className)} {...props} > {map && ( )} {/* tint, heavier when there's no refraction so text stays legible */} {/* volume: light gathers inside the top edge, shade settles along the bottom */} {/* rim light: bright where the light comes from (top left), softer opposite */} {children}

) } export { LiquidGlass, useCanRefract, type LiquidGlassProps } 75:T705,import type { CSSProperties } from "react" import type { TargetAndTransition, Transition } from "motion/react" // shared spring presets, every component picks from these export const springs = { snappy: { stiffness: 520, damping: 34, mass: 0.6 }, soft: { stiffness: 260, damping: 26, mass: 0.8 }, glide: { stiffness: 120, damping: 20, mass: 1 }, } as const export type SpringName = keyof typeof springs export function spring(name: SpringName): Transition { return { type: "spring", ...springs[name] } } // how a glow fades once its source moves away: slow, with a long tail export const afterglow = { linger: 0.9, ease: [0.22, 1, 0.36, 1], } as const satisfies { linger: number; ease: Transition["ease"] } // paints only the padding ring of an element, used for glowing borders export const ringMask: CSSProperties = { WebkitMask: "linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0)", WebkitMaskComposite: "xor", mask: "linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0)", maskComposite: "exclude", } // small icon gestures, played when a control is pressed or selected export const iconGestures = { pop: { scale: [1, 1.2, 1] }, ring: { rotate: [0, -18, 14, -9, 4, 0], scale: [1, 1.12, 1] }, // a gear looks the same after half a turn, so it can rest there and snap back unseen turn: { rotate: [0, 180], scale: [1, 1.12, 1] }, hop: { y: [0, -3, 0], scale: [1, 1.1, 1] }, nudge: { x: [0, 2.5, 0], scale: [1, 1.1, 1] }, } satisfies Record export type IconGesture = keyof typeof iconGestures // leaving a gesture is instant: every gesture already ends at, or looks like, its resting pose export const iconRest: TargetAndTransition = { scale: 1, rotate: 0, x: 0, y: 0, transition: { duration: 0 } } 66:["$","$L73",null,{"files":[{"path":"components/ui/liquid-glass.tsx","content":"$74","type":"registry:ui"},{"path":"lib/afterglow.ts","content":"$75","type":"registry:lib"}],"className":"h-[70svh] min-h-80"}]