{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "selection-snap",
  "title": "Selection Snap",
  "description": "A thin word in a loose viewfinder snaps into a design-tool selection while it goes from Thin to Black, pops its handles and counts up a size badge.",
  "dependencies": ["remotion", "@remotion/google-fonts"],
  "files": [
    {
      "path": "registry/remocn/selection-snap/index.tsx",
      "content": "\"use client\";\n\nimport { loadFont } from \"@remotion/google-fonts/Inter\";\nimport { type CSSProperties, useEffect, useState } from \"react\";\nimport {\n  continueRender,\n  delayRender,\n  Easing,\n  interpolate,\n  interpolateColors,\n  useCurrentFrame,\n  useVideoConfig,\n} from \"remotion\";\n\nconst { fontFamily: INTER } = loadFont(\"normal\", {\n  weights: [\"100\", \"900\"],\n  subsets: [\"latin\"],\n});\n\nexport interface SelectionSnapProps {\n  text?: string;\n  fontSize?: number;\n  fontFamily?: string;\n  fromWeight?: number;\n  toWeight?: number;\n  color?: string;\n  accent?: string;\n  selectionColor?: string;\n  badge?: boolean;\n  speed?: number;\n  className?: string;\n}\n\nexport const selectionSnapDefaults = {\n  text: \"Frame\",\n  fontSize: 150,\n  fontFamily: INTER,\n  fromWeight: 100,\n  toWeight: 900,\n  color: \"#fafafa\",\n  accent: \"#D97757\",\n  selectionColor: \"#0d99ff\",\n  badge: true,\n  speed: 1,\n} satisfies Required<Omit<SelectionSnapProps, \"className\">>;\n\n/** Frame on the 30 fps timeline where every channel has come to rest. */\nexport const selectionSnapLength = 38;\n\n/** Padding around the word, in em: the loose viewfinder and the snapped box. */\nexport const selectionSnapPadding = {\n  loose: { x: 1.1, y: 0.9 },\n  tight: { x: 0.12, y: 0 },\n} as const;\n\n/** Corners first, then edge midpoints, as fractions of the box. */\nexport const selectionSnapHandles = [\n  [0, 0],\n  [1, 0],\n  [1, 1],\n  [0, 1],\n  [0.5, 0],\n  [1, 0.5],\n  [0.5, 1],\n  [0, 0.5],\n] as const;\n\nconst CLAMP = {\n  extrapolateLeft: \"clamp\",\n  extrapolateRight: \"clamp\",\n} as const;\n\nconst easeOutCubic = Easing.out(Easing.cubic);\nconst easeInOutCubic = Easing.inOut(Easing.cubic);\nconst snapEase = Easing.bezier(0.34, 1.3, 0.64, 1);\nconst popEase = Easing.out(Easing.back(1.7));\n\nfunction finite(value: number | undefined, fallback: number) {\n  return typeof value === \"number\" && Number.isFinite(value) ? value : fallback;\n}\n\n/** Back-eased 0 → 1 over `duration` frames from `start`, never below 0. */\nfunction pop(t: number, start: number, duration: number) {\n  return Math.max(\n    0,\n    interpolate(t, [start, start + duration], [0, 1], {\n      ...CLAMP,\n      easing: popEase,\n    }),\n  );\n}\n\n/** Maps a composition frame onto the 30 fps timeline, scaled by `speed`. */\nexport function getSelectionSnapTime(\n  frame: number,\n  options: { fps?: number; speed?: number } = {},\n) {\n  const fps = Math.max(1, finite(options.fps, 30));\n  const speed = Math.max(0, finite(options.speed, 1));\n  return (Math.max(0, finite(frame, 0)) * 30 * speed) / fps;\n}\n\nexport interface SelectionSnapState {\n  /** Word and brackets fading in, 0..1. */\n  intro: number;\n  /** Viewfinder settle scale. */\n  bracketScale: number;\n  /** Loose (0) to tight (1) padding. Overshoots past 1 on the snap. */\n  snap: number;\n  /** Weight progress, 0..1. */\n  weight: number;\n  /** Color progress toward the accent, 0..1. */\n  tint: number;\n  /** Bracket arms growing along the edges; 1 closes them into a box. */\n  edges: number;\n  /** Scale of each handle, in `selectionSnapHandles` order. */\n  handles: number[];\n  /** Badge entrance, 0..1 with overshoot. */\n  badge: number;\n  /** Badge readout progress, 0..1. */\n  count: number;\n}\n\nexport function getSelectionSnapState(t: number): SelectionSnapState {\n  return {\n    intro: interpolate(t, [0, 8], [0, 1], { ...CLAMP, easing: easeOutCubic }),\n    bracketScale: interpolate(t, [0, 8], [1.06, 1], {\n      ...CLAMP,\n      easing: easeOutCubic,\n    }),\n    snap: interpolate(t, [14, 28], [0, 1], { ...CLAMP, easing: snapEase }),\n    weight: interpolate(t, [14, 30], [0, 1], {\n      ...CLAMP,\n      easing: easeInOutCubic,\n    }),\n    tint: interpolate(t, [18, 30], [0, 1], {\n      ...CLAMP,\n      easing: easeInOutCubic,\n    }),\n    edges: interpolate(t, [16, 26], [0, 1], {\n      ...CLAMP,\n      easing: easeInOutCubic,\n    }),\n    handles: selectionSnapHandles.map((_, i) => pop(t, 24 + i, 5)),\n    badge: pop(t, 24, 8),\n    count: interpolate(t, [24, 38], [0, 1], { ...CLAMP, easing: easeOutCubic }),\n  };\n}\n\n/** Padding in em for a snap progress. */\nexport function getSelectionSnapPadding(snap: number) {\n  const { loose, tight } = selectionSnapPadding;\n  return {\n    x: loose.x + (tight.x - loose.x) * snap,\n    y: loose.y + (tight.y - loose.y) * snap,\n  };\n}\n\n/** Size of the snapped box in reference px, from the word's final width. */\nexport function getSelectionSnapSize(textWidth: number, fontSize: number) {\n  const { tight } = selectionSnapPadding;\n  return {\n    width: Math.round(textWidth + 2 * tight.x * fontSize),\n    height: Math.round(fontSize * (1 + 2 * tight.y)),\n  };\n}\n\nfunction useTextWidth(text: string, font: string) {\n  const [width, setWidth] = useState<number | null>(null);\n\n  useEffect(() => {\n    const handle = delayRender(\"selection-snap: measuring the word\");\n    let released = false;\n    const release = () => {\n      if (released) return;\n      released = true;\n      continueRender(handle);\n    };\n    const measure = () => {\n      if (released) return;\n      const ctx = document.createElement(\"canvas\").getContext(\"2d\");\n      if (ctx) {\n        ctx.font = font;\n        setWidth(ctx.measureText(text).width);\n      }\n      release();\n    };\n    document.fonts.load(font, text).then(measure, measure);\n    return release;\n  }, [text, font]);\n\n  return width;\n}\n\nexport function SelectionSnap({\n  text = selectionSnapDefaults.text,\n  fontSize = selectionSnapDefaults.fontSize,\n  fontFamily = selectionSnapDefaults.fontFamily,\n  fromWeight = selectionSnapDefaults.fromWeight,\n  toWeight = selectionSnapDefaults.toWeight,\n  color = selectionSnapDefaults.color,\n  accent = selectionSnapDefaults.accent,\n  selectionColor = selectionSnapDefaults.selectionColor,\n  badge = selectionSnapDefaults.badge,\n  speed = selectionSnapDefaults.speed,\n  className,\n}: SelectionSnapProps) {\n  const frame = useCurrentFrame();\n  const { fps, height } = useVideoConfig();\n  const unit = height / 720;\n  const t = getSelectionSnapTime(frame, { fps, speed });\n  const state = getSelectionSnapState(t);\n\n  const size = fontSize * unit;\n  const pad = getSelectionSnapPadding(state.snap);\n  const weight = fromWeight + (toWeight - fromWeight) * state.weight;\n  const stroke = Math.max(1, 1.5 * unit);\n  const arm = 0.16 * size;\n  const handleSize = 9 * unit;\n  const finalWidth = useTextWidth(\n    text,\n    `${toWeight} ${fontSize}px ${fontFamily}`,\n  );\n  const readout =\n    finalWidth === null ? null : getSelectionSnapSize(finalWidth, fontSize);\n\n  // Percentages resolve against the box width for `width` and its height for\n  // `height`, so one expression grows every arm to its edge's midpoint.\n  const along = `calc(${arm}px + (50% - ${arm}px) * ${state.edges})`;\n  const arms: CSSProperties[] = [\n    { top: 0, left: 0, width: along, height: stroke },\n    { top: 0, right: 0, width: along, height: stroke },\n    { bottom: 0, left: 0, width: along, height: stroke },\n    { bottom: 0, right: 0, width: along, height: stroke },\n    { top: 0, left: 0, width: stroke, height: along },\n    { bottom: 0, left: 0, width: stroke, height: along },\n    { top: 0, right: 0, width: stroke, height: along },\n    { bottom: 0, right: 0, width: stroke, height: along },\n  ];\n\n  return (\n    <div\n      className={className}\n      style={{\n        position: \"absolute\",\n        inset: 0,\n        display: \"flex\",\n        alignItems: \"center\",\n        justifyContent: \"center\",\n        overflow: \"hidden\",\n      }}\n    >\n      <div\n        style={{\n          position: \"relative\",\n          display: \"inline-block\",\n          padding: `${pad.y * size}px ${pad.x * size}px`,\n        }}\n      >\n        <span\n          style={{\n            display: \"block\",\n            whiteSpace: \"pre\",\n            fontFamily,\n            fontSize: size,\n            lineHeight: 1,\n            fontWeight: Math.round(weight / 100) * 100,\n            fontVariationSettings: `\"wght\" ${weight.toFixed(2)}`,\n            color: interpolateColors(state.tint, [0, 1], [color, accent]),\n            opacity: state.intro,\n          }}\n        >\n          {text}\n        </span>\n        <div\n          style={{\n            position: \"absolute\",\n            inset: 0,\n            opacity: state.intro,\n            transform: `scale(${state.bracketScale})`,\n          }}\n        >\n          {arms.map((style, i) => (\n            <div\n              key={i}\n              style={{\n                position: \"absolute\",\n                background: selectionColor,\n                ...style,\n              }}\n            />\n          ))}\n          {selectionSnapHandles.map(([x, y], i) => (\n            <div\n              key={`${x}-${y}`}\n              style={{\n                position: \"absolute\",\n                left: `${x * 100}%`,\n                top: `${y * 100}%`,\n                width: handleSize,\n                height: handleSize,\n                boxSizing: \"border-box\",\n                background: \"#ffffff\",\n                border: `${stroke}px solid ${selectionColor}`,\n                transform: `translate(-50%, -50%) scale(${state.handles[i]})`,\n              }}\n            />\n          ))}\n        </div>\n        {badge && readout ? (\n          <div\n            style={{\n              position: \"absolute\",\n              left: \"50%\",\n              top: `calc(100% + ${12 * unit}px)`,\n              padding: `${3 * unit}px ${7 * unit}px`,\n              borderRadius: 4 * unit,\n              background: selectionColor,\n              color: \"#ffffff\",\n              fontFamily: INTER,\n              fontSize: 14 * unit,\n              lineHeight: 1.2,\n              fontWeight: 600,\n              fontVariationSettings: '\"wght\" 600',\n              fontVariantNumeric: \"tabular-nums\",\n              whiteSpace: \"nowrap\",\n              opacity: Math.min(1, state.badge),\n              transform: `translate(-50%, ${(1 - state.badge) * 8 * unit}px) scale(${0.6 + 0.4 * state.badge})`,\n              transformOrigin: \"50% 0\",\n            }}\n          >\n            {Math.round(readout.width * state.count)} ×{\" \"}\n            {Math.round(readout.height * state.count)}\n          </div>\n        ) : null}\n      </div>\n    </div>\n  );\n}\n",
      "type": "registry:component",
      "target": "components/remocn/selection-snap.tsx"
    }
  ],
  "type": "registry:component"
}