{
  "$schema": "https://shadcn-vue.com/schema/registry-item.json",
  "name": "violin-chart",
  "title": "Violin Chart",
  "type": "registry:ui",
  "files": [
    {
      "path": "packages/registry-vue/components/charts/violin-chart/ViolinChart.vue",
      "content": "<script setup lang=\"ts\">\nimport { computed } from 'vue'\nimport { use } from 'echarts/core'\nimport { CanvasRenderer } from 'echarts/renderers'\nimport { CustomChart as EChartsCustomChart } from 'echarts/charts'\nimport { GridComponent, TooltipComponent, LegendComponent } from 'echarts/components'\nimport VChart from 'vue-echarts'\nimport { cn } from '@/lib/utils'\nimport {\n  chartColors,\n  chartTextColor,\n  chartAxisColor,\n  chartSplitLineColor,\n  chartTooltipBg,\n  chartTooltipBorder,\n  chartTooltipText,\n  mergeOptionBlock,\n} from '../useChartTheme'\n\nuse([CanvasRenderer, EChartsCustomChart, GridComponent, TooltipComponent, LegendComponent])\n\nexport interface ViolinGroup {\n  group: string\n  values: number[]\n}\n\ninterface Props {\n  groups: ViolinGroup[]\n  height?: number | string\n  option?: any\n  class?: string\n  /** Accessible name announced for the chart image. Defaults to \"Chart\". */\n  ariaLabel?: string\n}\n\nconst props = withDefaults(defineProps<Props>(), {\n  height: 340,\n})\n\nfunction kde(values: number[], grid: number[]): number[] {\n  const n = values.length\n  if (!n) return grid.map(() => 0)\n  const mean = values.reduce((s, v) => s + v, 0) / n\n  const sd = Math.sqrt(values.reduce((s, v) => s + (v - mean) ** 2, 0) / n) || 1\n  const h = 1.06 * sd * Math.pow(n, -0.2) || sd\n  return grid.map((x) => values.reduce((s, v) => s + Math.exp(-0.5 * ((x - v) / h) ** 2), 0) / (n * h))\n}\n\nfunction quartiles(sorted: number[]) {\n  const q = (p: number) => sorted[Math.min(sorted.length - 1, Math.floor(p * (sorted.length - 1)))]!\n  return { q1: q(0.25), med: q(0.5), q3: q(0.75), min: sorted[0]!, max: sorted[sorted.length - 1]! }\n}\n\nconst GRID_N = 60\n\nconst mergedOption = computed(() => {\n  const all = props.groups.flatMap((g) => g.values)\n  const lo = Math.min(...all, 0)\n  const hi = Math.max(...all, 1)\n  const grid = Array.from({ length: GRID_N }, (_, i) => lo + ((hi - lo) * i) / (GRID_N - 1))\n  const densities = props.groups.map((g) => kde(g.values, grid))\n  const maxD = Math.max(...densities.flat(), 1)\n  const W = 0.42\n\n  const series = [\n    {\n      type: 'custom',\n      renderItem: (params: any, api: any) => {\n        const gi: number = params.dataIndex\n        const g = props.groups[gi]!\n        const sorted = [...g.values].sort((a, b) => a - b)\n        const { q1, med, q3, min, max } = quartiles(sorted)\n        const dens = densities[gi]!\n        const cx = api.coord([gi, 0])[0]\n        const yOf = (v: number) => api.coord([gi, v])[1]\n        const xOf = (d: number, side: 1 | -1) =>\n          cx + side * ((d / maxD) * W * Math.abs(api.coord([gi + 1, 0])[0] - cx || 60))\n        const right = grid.map((v, i) => [xOf(dens[i]!, 1), yOf(v)] as [number, number])\n        const left = grid.map((v, i) => [xOf(dens[i]!, -1), yOf(v)] as [number, number]).reverse()\n        const color = chartColors.value[gi % chartColors.value.length]\n        return {\n          type: 'group',\n          children: [\n            { type: 'polygon', shape: { points: [...right, ...left] }, style: { fill: color, opacity: 0.45 } },\n            {\n              type: 'line',\n              shape: { x1: cx, y1: yOf(min), x2: cx, y2: yOf(max) },\n              style: { stroke: chartTextColor.value, lineWidth: 1.5 },\n            },\n            {\n              type: 'line',\n              shape: { x1: cx, y1: yOf(q1), x2: cx, y2: yOf(q3) },\n              style: { stroke: color, lineWidth: 7, lineCap: 'round' },\n            },\n            {\n              type: 'circle',\n              shape: { cx, cy: yOf(med), r: 4.5 },\n              style: { fill: chartTooltipBg.value, stroke: color, lineWidth: 2 },\n            },\n          ],\n        }\n      },\n      data: props.groups.map((g) => g.group),\n    },\n  ]\n  const userOption: any = props.option ?? {}\n  const {\n    series: userSeries,\n    xAxis: userXAxis,\n    yAxis: userYAxis,\n    grid: userGrid,\n    tooltip: userTooltip,\n    ...userRest\n  } = userOption\n  const mergedSeries = Array.isArray(userSeries) ? series.map((s, i) => ({ ...s, ...(userSeries[i] ?? {}) })) : series\n  return {\n    color: chartColors.value,\n    grid: mergeOptionBlock({ left: 16, right: 16, top: 24, bottom: 24, containLabel: true }, userGrid),\n    tooltip: mergeOptionBlock(\n      {\n        trigger: 'item',\n        backgroundColor: chartTooltipBg.value,\n        borderColor: chartTooltipBorder.value,\n        textStyle: { color: chartTooltipText.value, fontSize: 12 },\n        formatter: (p: any) => {\n          const g = props.groups[p.dataIndex]\n          if (!g) return ''\n          const s = [...g.values].sort((a, b) => a - b)\n          const { q1, med, q3 } = quartiles(s)\n          return `${g.group}<br/>n=${g.values.length} median=${med.toFixed(2)}<br/>Q1=${q1.toFixed(2)} Q3=${q3.toFixed(2)}`\n        },\n      },\n      userTooltip,\n    ),\n    legend: { show: false },\n    xAxis: mergeOptionBlock(\n      {\n        type: 'category',\n        data: props.groups.map((g) => g.group),\n        axisLine: { lineStyle: { color: chartAxisColor.value } },\n        axisLabel: { color: chartTextColor.value, fontSize: 11 },\n        axisTick: { show: false },\n      },\n      userXAxis,\n    ),\n    yAxis: mergeOptionBlock(\n      {\n        type: 'value',\n        min: lo,\n        max: hi,\n        splitLine: { lineStyle: { color: chartSplitLineColor.value } },\n        axisLabel: { color: chartTextColor.value, fontSize: 11 },\n      },\n      userYAxis,\n    ),\n    series: mergedSeries,\n    ...userRest,\n  }\n})\n</script>\n\n<template>\n  <div\n    role=\"img\"\n    tabindex=\"0\"\n    :aria-label=\"ariaLabel || 'Violin chart'\"\n    :style=\"{ height: /^\\d+$/.test(String(height)) ? `${height}px` : String(height) }\"\n    :class=\"cn('focus-visible:ring-ring w-full focus-visible:ring-2 focus-visible:outline-none', props.class)\"\n  >\n    <VChart :option=\"mergedOption\" :autoresize=\"true\" class=\"size-full\" />\n  </div>\n</template>\n",
      "type": "registry:ui",
      "target": "~/app/components/ui/charts/violin-chart/ViolinChart.vue"
    },
    {
      "path": "packages/registry-vue/components/charts/violin-chart/index.ts",
      "content": "export { default as ViolinChart, type ViolinGroup } from './ViolinChart.vue'\n",
      "type": "registry:ui",
      "target": "~/app/components/ui/charts/violin-chart/index.ts"
    },
    {
      "path": "packages/registry-vue/components/charts/useChartTheme.ts",
      "content": "import { computed, ref, type ComputedRef } from 'vue'\n\n// Chart palette is driven by Tailwind v4 CSS variables (`--chart-1`..`--chart-5`,\n// `--muted-foreground`, `--border`, `--popover`, etc.) so dark/light flips\n// happen automatically when the consumer toggles their theme class. The\n// values resolve at runtime via `getComputedStyle`, so they pick up whatever\n// the consumer set in their own `tailwind.css` -- no fork required.\n//\n// We bump `themeKey` whenever `<html>` class/style changes (the typical\n// shadcn dark-mode pivot) so every consuming `computed` re-resolves and\n// downstream ECharts options re-paint.\n\nconst themeKey = ref(0)\n\nif (typeof window !== 'undefined') {\n  // Bump once on the first paint so post-hydration getComputedStyle reads\n  // the *resolved* CSS values (during SSR-built bundles the very first\n  // computed pass returns the fallbacks below).\n  requestAnimationFrame(() => themeKey.value++)\n  new MutationObserver(() => themeKey.value++).observe(document.documentElement, {\n    attributes: true,\n    attributeFilter: ['class', 'style', 'data-theme'],\n  })\n}\n\n// ECharts' canvas renderer does not accept OKLCH in every browser. Assigning\n// one of our Tailwind tokens to `fillStyle` can silently leave the sentinel\n// colour in place, turning a whole chart black. Convert OKLCH ourselves and\n// let the canvas normalize older CSS colour formats.\nlet _hexCanvas: CanvasRenderingContext2D | null = null\n\nexport function toCanvasColor(cssColor: string): string {\n  const value = cssColor.trim()\n  const match = value.match(\n    /^oklch\\(\\s*([+-]?(?:\\d+\\.?\\d*|\\.\\d+))(%?)\\s+([+-]?(?:\\d+\\.?\\d*|\\.\\d+))\\s+([+-]?(?:\\d+\\.?\\d*|\\.\\d+))(?:deg)?(?:\\s*\\/\\s*([+-]?(?:\\d+\\.?\\d*|\\.\\d+))(%?))?\\s*\\)$/i,\n  )\n\n  if (match) {\n    const lightness = Number(match[1]) / (match[2] === '%' ? 100 : 1)\n    const chroma = Number(match[3])\n    const hue = (Number(match[4]) * Math.PI) / 180\n    const alpha = match[5] == null ? 1 : Number(match[5]) / (match[6] === '%' ? 100 : 1)\n    const a = chroma * Math.cos(hue)\n    const b = chroma * Math.sin(hue)\n\n    const l = Math.pow(lightness + 0.3963377774 * a + 0.2158037573 * b, 3)\n    const m = Math.pow(lightness - 0.1055613458 * a - 0.0638541728 * b, 3)\n    const s = Math.pow(lightness - 0.0894841775 * a - 1.291485548 * b, 3)\n    const linear = [\n      4.0767416621 * l - 3.3077115913 * m + 0.2309699292 * s,\n      -1.2684380046 * l + 2.6097574011 * m - 0.3413193965 * s,\n      -0.0041960863 * l - 0.7034186147 * m + 1.707614701 * s,\n    ]\n    const rgb = linear.map((channel) => {\n      const encoded = channel <= 0.0031308 ? 12.92 * channel : 1.055 * Math.pow(channel, 1 / 2.4) - 0.055\n      return Math.round(Math.min(1, Math.max(0, encoded)) * 255)\n    })\n\n    return alpha < 1 ? `rgba(${rgb.join(', ')}, ${alpha})` : `rgb(${rgb.join(', ')})`\n  }\n\n  if (typeof document === 'undefined') return cssColor\n  if (!_hexCanvas) {\n    _hexCanvas = document.createElement('canvas').getContext('2d')\n  }\n  if (!_hexCanvas) return cssColor\n  _hexCanvas.fillStyle = '#010203'\n  _hexCanvas.fillStyle = value\n  const normalized = _hexCanvas.fillStyle as string\n  return normalized === '#010203' && value.toLowerCase() !== '#010203' ? value : normalized\n}\n\n// Convert any CSS color (hex, rgb, oklch, color()) + alpha 0..1 to a\n// canvas-safe rgba(r,g,b,a). `colorString + '40'` (8-digit hex alpha)\n// only works when `colorString` is `#rrggbb`; once tokens resolve to\n// oklch() post-hydration the gradient stops break and the canvas paint\n// throws every frame. Stay defensive and always return rgba.\nexport function toRgba(cssColor: string, alpha: number): string {\n  const normalized = toCanvasColor(cssColor)\n  if (normalized.startsWith('#') && normalized.length === 7) {\n    const r = parseInt(normalized.slice(1, 3), 16)\n    const g = parseInt(normalized.slice(3, 5), 16)\n    const b = parseInt(normalized.slice(5, 7), 16)\n    return `rgba(${r},${g},${b},${alpha})`\n  }\n  if (normalized.startsWith('rgba(')) {\n    return normalized.replace(/,\\s*[\\d.]+\\s*\\)$/, `,${alpha})`)\n  }\n  if (normalized.startsWith('rgb(')) {\n    return normalized.replace(/^rgb\\(/, 'rgba(').replace(/\\)$/, `,${alpha})`)\n  }\n  // Canvas refused to parse this color -- ship the original string and\n  // let ECharts complain (better than crashing the paint loop).\n  return cssColor\n}\n\nfunction resolveVar(name: string, fallback: string): string {\n  if (typeof window === 'undefined') return fallback\n  const v = getComputedStyle(document.documentElement).getPropertyValue(name).trim()\n  if (!v) return fallback\n  return toCanvasColor(v)\n}\n\n// SSR / pre-hydration fallback palette. Hex values picked to roughly\n// match the shadcn Neutral defaults in `tailwind.css` so the first paint\n// doesn't flicker.\nconst CHART_FALLBACK = ['#f59e0b', '#14b8a6', '#3b82f6', '#f97316', '#eab308']\n\nexport const chartColors: ComputedRef<string[]> = computed(() => {\n  themeKey.value\n  return Array.from({ length: 5 }, (_, i) => resolveVar(`--chart-${i + 1}`, CHART_FALLBACK[i]!))\n})\n\nexport const chartTextColor: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--muted-foreground', '#888888')\n})\n\nexport const chartAxisColor: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--border', '#e5e5e5')\n})\n\nexport const chartSplitLineColor: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--border', '#f0f0f0')\n})\n\nexport const chartTooltipBg: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--popover', 'rgba(255,255,255,0.96)')\n})\n\nexport const chartTooltipBorder: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--border', '#e5e5e5')\n})\n\nexport const chartTooltipText: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--popover-foreground', '#333333')\n})\n\nexport const chartBgColor: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--card', resolveVar('--background', '#ffffff'))\n})\n\n// The app's accent, for the one highlighted element on a chart or map — a\n// selected route, a focused bar. Category series keep using chartColors.\nexport const chartAccentColor: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--primary', '#38bdf8')\n})\n\n// Out-of-bounds / failure colour for charts that encode good vs bad rather\n// than a category — control limits, error series. CSS-level marks can use\n// `var(--destructive)` directly; this exists because ECharts needs a resolved\n// colour string on the canvas.\nexport const chartDangerColor: ComputedRef<string> = computed(() => {\n  themeKey.value\n  return resolveVar('--destructive', '#dc2626')\n})\n\n// Two-level deep merge for ECharts option blocks (xAxis, yAxis, grid,\n// tooltip, legend, singleAxis, parallel, etc.). The top-level keys merge\n// shallowly, but one nested level (axisLabel, axisLine, splitLine, etc.)\n// merges shallowly too so a consumer passing `xAxis: { axisLabel: { fontSize: 9 } }`\n// doesn't blow away the wrapper's `color` + base font defaults on the same\n// axisLabel block. Arrays + primitives replace outright.\n//\n// This is the merge strategy the chart wrappers use to fold `props.option`\n// onto their computed base option without forcing consumers to spell out\n// every default they want to preserve.\nexport function mergeOptionBlock<T extends Record<string, any>>(base: T, user: Partial<T> | undefined): T {\n  if (!user) return base\n  const out: any = { ...base }\n  for (const k of Object.keys(user)) {\n    const bv = (base as any)[k]\n    const uv = (user as any)[k]\n    if (\n      bv != null &&\n      uv != null &&\n      typeof bv === 'object' &&\n      typeof uv === 'object' &&\n      !Array.isArray(bv) &&\n      !Array.isArray(uv)\n    ) {\n      out[k] = { ...bv, ...uv }\n    } else {\n      out[k] = uv\n    }\n  }\n  return out\n}\n\n// Default gauge stoplight: teal (safe) -> amber (warning) -> red (danger).\n// Pulled off saturated green and onto teal so the gauge ties back to the\n// dashboard palette; red is kept as the universal \"limit reached\" cue.\n// GaugeChart consumes this via its `thresholds` prop default; consumers\n// pass their own array to override. Static because gauges have semantic\n// meaning (green safe / red danger) that we deliberately don't theme-flip.\nexport const gaugeThresholds: [number, string][] = [\n  [0.6, '#14b8a6'],\n  [0.85, '#f59e0b'],\n  [1, '#dc2626'],\n]\n",
      "type": "registry:ui",
      "target": "~/app/components/ui/charts/useChartTheme.ts"
    }
  ],
  "dependencies": [
    "echarts",
    "vue-echarts"
  ],
  "devDependencies": [],
  "registryDependencies": [],
  "description": "Violin chart around Apache ECharts custom series. Gaussian-KDE density halves with quartile box, median dot, and whiskers per group. Theme-aware via registry tokens.",
  "categories": [
    "chart"
  ]
}