{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "lcd-meter",
  "title": "LCD Meter",
  "description": "Recorder-style segmented level meter for an LCD display.",
  "dependencies": [
    "solid-js@^1.9.15",
    "class-variance-authority"
  ],
  "registryDependencies": [
    "@audiocn-solid/core",
    "@audiocn-solid/level-meter",
    "@audiocn-solid/lcd-display"
  ],
  "files": [
    {
      "path": "components/ui/lcd-meter.tsx",
      "content": "import { For, Show, createContext, useContext } from \"solid-js\";\nimport type { Accessor } from \"solid-js\";\n\nimport { DbScale } from \"@/components/ui/db-scale\";\nimport { useLcdDisplay } from \"@/components/ui/lcd-display\";\nimport {\n  LevelMeter,\n  LevelMeterChannel,\n  LevelMeterClip,\n  LevelMeterValue,\n  useLevelMeter,\n} from \"@/components/ui/level-meter\";\nimport type {\n  LevelMeterChannelProps,\n  LevelMeterClipProps,\n  LevelMeterProps,\n  LevelMeterValueProps,\n} from \"@/components/ui/level-meter\";\nimport { formatDb } from \"@/lib/audio/decibels\";\nimport { provideContext } from \"@/lib/solid/context\";\nimport { createCompatEffect } from \"@/lib/solid/effect\";\nimport type { DivDOMProps, SpanDOMProps } from \"@/lib/solid/jsx-types\";\nimport { omitProps } from \"@/lib/solid/props\";\nimport { setRefValue } from \"@/lib/solid/ref\";\nimport { cn } from \"@/lib/utils\";\n\nconst ChannelContext = createContext<Accessor<number> | null>(null);\n\nconst PERIOD =\n  \"[--lcd-meter-period:calc(var(--lcd-meter-segment)_+_var(--lcd-meter-gap))]\";\n\nconst ON_GRID =\n  \"ml-(--lcd-meter-nudge-x) w-[calc(round(down,_100%_-_var(--lcd-meter-nudge-x)_+_var(--lcd-meter-gap),_var(--lcd-meter-period))_-_var(--lcd-meter-gap))]\";\n\nconst channelLabel = (index: number, count: number) =>\n  count === 2\n    ? index === 0\n      ? \"L\"\n      : \"R\"\n    : count > 2\n      ? String(index + 1)\n      : null;\n\nconst lcdMeterSize = {\n  default: \"[--lcd-meter-thickness:calc(var(--lcd-display-pitch)*7)]\",\n  lg: \"[--lcd-meter-thickness:calc(var(--lcd-display-pitch)*10)]\",\n  sm: \"[--lcd-meter-thickness:calc(var(--lcd-display-pitch)*5)]\",\n} as const;\n\nexport type LcdMeterChannelProps = LevelMeterChannelProps;\n\nexport const LcdMeterChannel = (props: LcdMeterChannelProps) =>\n  provideContext(\n    ChannelContext,\n    () => props.index ?? 0,\n    () => (\n      <LevelMeterChannel\n        {...props}\n        class={cn(\n          \"col-span-full grid grid-cols-subgrid items-center\",\n          props.class,\n          props.className\n        )}\n        data-slot=\"lcd-meter-channel\"\n      />\n    )\n  );\n\nexport const LcdMeterLabel = (props: SpanDOMProps & { className?: string }) => (\n  <span\n    {...props}\n    class={cn(\n      \"col-start-1 min-w-[round(up,_1.5em,_var(--lcd-display-pitch))] text-(--lcd-display-ink-dim)\",\n      props.class,\n      props.className\n    )}\n    data-slot=\"lcd-meter-label\"\n  />\n);\n\nexport const LcdMeterTrack = (props: DivDOMProps & { className?: string }) => {\n  const display = useLcdDisplay();\n\n  return (\n    <div\n      {...props}\n      class={cn(\n        \"relative col-start-2 h-(--lcd-meter-thickness)\",\n        PERIOD,\n        ON_GRID,\n        !display?.matrix() &&\n          \"mask-[radial-gradient(circle,#000_58%,transparent_64%)] mask-size-[var(--lcd-display-pitch)_var(--lcd-display-pitch)]\",\n        props.class,\n        props.className\n      )}\n      data-slot=\"lcd-meter-track\"\n    >\n      <div\n        class=\"absolute inset-0 bg-(--lcd-meter-unlit) mask-[repeating-linear-gradient(to_right,#000_0_var(--lcd-meter-segment),transparent_var(--lcd-meter-segment)_var(--lcd-meter-period))]\"\n        data-slot=\"lcd-meter-segments\"\n      >\n        {props.children}\n      </div>\n    </div>\n  );\n};\n\nexport interface LcdMeterBarProps extends DivDOMProps {\n  measure?: \"peak\" | \"rms\";\n  className?: string;\n}\n\nexport const LcdMeterBar = (props: LcdMeterBarProps) => (\n  <div\n    {...omitProps(props, [\"measure\", \"class\", \"className\"])}\n    aria-hidden=\"true\"\n    class={cn(\n      \"absolute inset-0 bg-(--lcd-display-lit) [clip-path:inset(0_calc(100%_-_round(up,_var(--meter-level)_*_100%,_var(--lcd-meter-period)))_0_0)]\",\n      props.measure === \"rms\" && \"[--meter-level:var(--meter-rms)]\",\n      props.class,\n      props.className\n    )}\n    data-slot=\"lcd-meter-bar\"\n    data-measure={props.measure ?? \"peak\"}\n  />\n);\n\nexport const LcdMeterHold = (props: DivDOMProps & { className?: string }) => (\n  <div\n    {...omitProps(props, [\"class\", \"className\"])}\n    aria-hidden=\"true\"\n    class={cn(\n      \"absolute inset-y-0 left-[calc(round(up,_var(--meter-hold)_*_100%,_var(--lcd-meter-period))_-_var(--lcd-meter-period))] w-(--lcd-meter-segment) bg-(--lcd-display-lit) opacity-[calc(var(--meter-hold)_*_1000)]\",\n      props.class,\n      props.className\n    )}\n    data-slot=\"lcd-meter-hold\"\n  />\n);\n\nexport type LcdMeterValueProps = LevelMeterValueProps;\n\nexport const LcdMeterValue = (props: LcdMeterValueProps) => {\n  const channel = useContext(ChannelContext);\n\n  return (\n    <LevelMeterValue\n      {...props}\n      channel={props.channel ?? channel?.() ?? \"max\"}\n      class={cn(\n        \"col-start-3 min-w-[calc(var(--db-readout-width)*1.2)] font-(family-name:--lcd-display-font) text-(--lcd-display-lit)\",\n        props.class,\n        props.className\n      )}\n      unit={props.unit ?? false}\n      data-slot=\"lcd-meter-value\"\n    />\n  );\n};\n\nexport interface LcdMeterScaleProps extends DivDOMProps {\n  ticks?: number[];\n  format?: (db: number) => string;\n  bracket?: boolean;\n  className?: string;\n}\n\nexport const LcdMeterScale = (props: LcdMeterScaleProps) => {\n  const { maxDb, minDb, taper, zones } = useLevelMeter(\"LcdMeterScale\");\n\n  const clipFromDb = () =>\n    Math.min(\n      ...zones()\n        .filter((zone) => zone.zone === \"clip\")\n        .map((zone) => zone.fromDb)\n    );\n\n  return (\n    <div\n      {...omitProps(props, [\n        \"ticks\",\n        \"format\",\n        \"bracket\",\n        \"class\",\n        \"className\",\n      ])}\n      class={cn(\n        \"col-start-2 flex flex-col gap-(--lcd-display-pitch)\",\n        PERIOD,\n        ON_GRID,\n        props.class,\n        props.className\n      )}\n      data-slot=\"lcd-meter-scale\"\n    >\n      <Show when={props.bracket !== false && clipFromDb() < maxDb()}>\n        <div\n          aria-hidden=\"true\"\n          class=\"relative h-[calc(var(--lcd-display-pitch)*2)]\"\n          data-slot=\"lcd-meter-bracket\"\n          style={{\n            \"--lcd-meter-bracket-start\": taper()\n              .toPosition(clipFromDb())\n              .toFixed(4),\n          }}\n        >\n          <div class=\"absolute inset-y-0 right-0 left-[round(down,_var(--lcd-meter-bracket-start)_*_100%,_var(--lcd-meter-period))] border-x-(length:--lcd-display-pitch) border-t-(length:--lcd-display-pitch) border-(--lcd-display-ink-dim)\" />\n        </div>\n      </Show>\n      <DbScale\n        class=\"h-4 text-[0.75em] text-(--lcd-display-ink-dim) [&_[data-slot=db-scale-mark]]:hidden\"\n        format={\n          props.format ??\n          ((db) =>\n            formatDb(db, {\n              decimals: 0,\n              sign: db > 0 ? \"auto\" : \"never\",\n              unit: false,\n            }))\n        }\n        maxDb={maxDb()}\n        minDb={minDb()}\n        orientation=\"horizontal\"\n        taper={taper()}\n        ticks={\n          props.ticks ??\n          [6, 3, 0, -3, -6, -12, -24, -48].filter(\n            (tick) => tick >= minDb() && tick <= maxDb()\n          )\n        }\n      />\n    </div>\n  );\n};\n\nexport type LcdMeterClipProps = LevelMeterClipProps;\n\nexport const LcdMeterClip = (props: LcdMeterClipProps) => (\n  <LevelMeterClip\n    {...props}\n    class={cn(\n      \"col-start-3 h-auto self-end justify-self-end rounded-sm px-1 py-0.5 text-[0.75em] font-normal text-(--lcd-meter-unlit) uppercase transition-none hover:bg-transparent focus-visible:ring-1 focus-visible:ring-(--lcd-display-lit) data-clipping:bg-(--lcd-display-lit) data-clipping:text-(--lcd-display-glass)\",\n      props.class,\n      props.className\n    )}\n    data-slot=\"lcd-meter-clip\"\n  >\n    {props.children ?? \"CLIP\"}\n  </LevelMeterClip>\n);\n\nexport type LcdMeterProps = Omit<\n  LevelMeterProps,\n  \"orientation\" | \"segments\" | \"size\" | \"variant\"\n>;\n\nconst LcdMeterRows = () => {\n  const { channelCount } = useLevelMeter(\"LcdMeter\");\n\n  return (\n    <>\n      <For each={Array.from({ length: channelCount() }, (_, index) => index)}>\n        {(index) => {\n          const label = () => channelLabel(index, channelCount());\n\n          return (\n            <LcdMeterChannel index={index}>\n              <Show when={label()}>\n                <LcdMeterLabel>{label()}</LcdMeterLabel>\n              </Show>\n              <LcdMeterTrack>\n                <LcdMeterBar />\n                <LcdMeterHold />\n              </LcdMeterTrack>\n              <LcdMeterValue />\n            </LcdMeterChannel>\n          );\n        }}\n      </For>\n      <LcdMeterScale />\n      <LcdMeterClip />\n    </>\n  );\n};\n\nexport const LcdMeter = (props: LcdMeterProps) => {\n  const display = useLcdDisplay();\n  let root: HTMLDivElement | null = null;\n\n  createCompatEffect(\n    () => true,\n    () => {\n      const content = root?.closest<HTMLElement>(\n        \"[data-slot=lcd-display-content]\"\n      );\n\n      if (!root || !content) return;\n      const element = root;\n      let nudgeX = 0;\n      let nudgeY = 0;\n\n      const toNextDot = (distance: number, pitch: number) => {\n        const past = ((distance % pitch) + pitch) % pitch;\n\n        return past < 0.01 || pitch - past < 0.01 ? 0 : pitch - past;\n      };\n\n      const align = () => {\n        const track = element.querySelector<HTMLElement>(\n          \"[data-slot=lcd-meter-track]\"\n        );\n\n        const width = getComputedStyle(content).maskSize.split(\" \")[0] ?? \"\";\n        const pitch = width.endsWith(\"px\") ? Number.parseFloat(width) : 0;\n        let x = 0;\n        let y = 0;\n\n        if (track && pitch > 0) {\n          const origin = content.getBoundingClientRect();\n          const rect = track.getBoundingClientRect();\n          x = toNextDot(rect.left - nudgeX - origin.left, pitch);\n          y = toNextDot(rect.top - nudgeY - origin.top, pitch);\n        }\n\n        if (x !== nudgeX) {\n          nudgeX = x;\n          element.style.setProperty(\"--lcd-meter-nudge-x\", `${x}px`);\n        }\n\n        if (y !== nudgeY) {\n          nudgeY = y;\n          element.style.setProperty(\"--lcd-meter-nudge-y\", `${y}px`);\n        }\n      };\n\n      const resize =\n        typeof ResizeObserver === \"undefined\"\n          ? undefined\n          : new ResizeObserver(align);\n\n      const observe = () => {\n        resize?.disconnect();\n        resize?.observe(content);\n\n        for (const label of element.querySelectorAll(\n          \"[data-slot=lcd-meter-label]\"\n        ))\n          resize?.observe(label);\n        align();\n      };\n\n      const mutation = new MutationObserver(observe);\n      mutation.observe(element, {\n        childList: true,\n        characterData: true,\n        subtree: true,\n      });\n      observe();\n\n      return () => {\n        resize?.disconnect();\n        mutation.disconnect();\n      };\n    }\n  );\n\n  if (!display) throw new Error(\"LcdMeter must be used inside LcdDisplay.\");\n\n  return (\n    <LevelMeter\n      {...props}\n      ref={(element) => {\n        root = element;\n        setRefValue(props.ref, element);\n      }}\n      class={cn(\n        \"grid grid-cols-[auto_minmax(0,1fr)_auto] items-center gap-x-[calc(var(--lcd-display-pitch)*4)] gap-y-[calc(var(--lcd-display-pitch)*2)] pt-[calc(0.75rem_+_var(--lcd-meter-nudge-y))] pb-3 has-[[data-slot=db-scale]]:pb-3\",\n        \"[--lcd-meter-gap:var(--lcd-display-pitch)] [--lcd-meter-nudge-x:0px] [--lcd-meter-nudge-y:0px] [--lcd-meter-segment:calc(var(--lcd-display-pitch)*3)] [--lcd-meter-unlit:color-mix(in_oklab,var(--lcd-display-lit)_14%,transparent)]\",\n        lcdMeterSize[display.size()],\n        props.class,\n        props.className\n      )}\n      data-slot=\"lcd-meter\"\n      orientation=\"horizontal\"\n      size={display.size()}\n      taper={props.taper ?? \"audio\"}\n    >\n      {props.children ?? <LcdMeterRows />}\n    </LevelMeter>\n  );\n};\n",
      "type": "registry:ui"
    },
    {
      "path": "lib/audiocn-license.txt",
      "content": "Audio component source adapted from https://github.com/audiocn/ui.\nMIT License — Copyright (c) 2026 OrcDev\n\nRegular SVG icon geometry adapted from @phosphor-icons/react 2.1.10.\nMIT License — Copyright (c) 2020 Phosphor Icons\n\nThe following permission and warranty terms apply to both notices.\nRetain this file with copies or substantial portions of the source.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE.\n",
      "type": "registry:file",
      "target": "@lib/audiocn-license.txt"
    }
  ],
  "type": "registry:ui"
}