{
  "$schema": "https://uipkge.dev/schema/registry-item.json",
  "name": "control-chart",
  "title": "Control Chart",
  "type": "registry:ui",
  "files": [
    {
      "path": "packages/registry-svelte/components/control-chart/ControlChart.svelte",
      "content": "<script lang=\"ts\" module>\n  import type { HTMLAttributes } from 'svelte/elements'\n\n  export interface ControlChartProps extends HTMLAttributes<HTMLDivElement> {\n    data: Record<string, any>[]\n    xField?: string\n    yField?: string\n    /** Override computed centre line. Defaults to the data mean. */\n    mean?: number\n    /** Override computed limits. Default mean ± 2σ. */\n    ucl?: number\n    lcl?: number\n    height?: number | string\n    option?: any\n    /** Accessible name announced for the chart image. Defaults to \"Chart\". */\n    ariaLabel?: string\n    ref?: HTMLDivElement | null\n  }\n</script>\n\n<script lang=\"ts\">\n  import { use, init, type ECharts } from 'echarts/core'\n  import { CanvasRenderer } from 'echarts/renderers'\n  import { LineChart as EChartsLineChart } from 'echarts/charts'\n  import { GridComponent, TooltipComponent, MarkLineComponent, LegendComponent } from 'echarts/components'\n  import { untrack } from 'svelte'\n  import { cn } from '$lib/utils'\n  import {\n    chartColors,\n    chartDangerColor,\n    chartTextColor,\n    chartAxisColor,\n    chartSplitLineColor,\n    chartTooltipBg,\n    chartTooltipBorder,\n    chartTooltipText,\n    mergeOptionBlock,\n  } from './useChartTheme'\n\n  use([CanvasRenderer, EChartsLineChart, GridComponent, TooltipComponent, MarkLineComponent, LegendComponent])\n\n  let {\n    data,\n    xField = 'x',\n    yField = 'value',\n    mean: meanOverride,\n    ucl: uclOverride,\n    lcl: lclOverride,\n    height = 300,\n    option,\n    ariaLabel,\n    class: className,\n    ref = $bindable(null),\n    ...restProps\n  }: ControlChartProps = $props()\n\n  const stats = $derived.by(() => {\n    const vals = data.map((d) => +d[yField] || 0)\n    const mean = meanOverride ?? vals.reduce((s, v) => s + v, 0) / Math.max(1, vals.length)\n    const sd = Math.sqrt(vals.reduce((s, v) => s + (v - mean) ** 2, 0) / Math.max(1, vals.length)) || 1\n    return { mean, ucl: uclOverride ?? mean + 2 * sd, lcl: lclOverride ?? mean - 2 * sd }\n  })\n\n  const mergedOption = $derived.by(() => {\n    const { mean, ucl, lcl } = stats\n    const line = $chartColors[0]\n    const bad = $chartDangerColor\n    const series = [\n      {\n        type: 'line',\n        symbol: 'circle',\n        symbolSize: 7,\n        lineStyle: { width: 2, color: line },\n        itemStyle: {\n          color: (p: any) => (p.value > ucl || p.value < lcl ? bad : line),\n          borderColor: $chartTooltipBg,\n          borderWidth: 1.5,\n        },\n        markLine: {\n          silent: true,\n          symbol: 'none',\n          label: { color: $chartTextColor, fontSize: 10, formatter: '{b}' },\n          lineStyle: { type: 'dashed', width: 1 },\n          data: [\n            { name: 'UCL', yAxis: ucl, lineStyle: { color: bad } },\n            { name: 'Mean', yAxis: mean, lineStyle: { color: $chartTextColor } },\n            { name: 'LCL', yAxis: lcl, lineStyle: { color: bad } },\n          ],\n        },\n        data: data.map((d) => d[yField]),\n      },\n    ]\n    const userOption: any = 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,\n      grid: mergeOptionBlock({ left: 16, right: 16, top: 24, bottom: 24, containLabel: true }, userGrid),\n      tooltip: mergeOptionBlock(\n        {\n          trigger: 'axis',\n          backgroundColor: $chartTooltipBg,\n          borderColor: $chartTooltipBorder,\n          textStyle: { color: $chartTooltipText, fontSize: 12 },\n        },\n        userTooltip,\n      ),\n      legend: { show: false },\n      xAxis: mergeOptionBlock(\n        {\n          type: 'category',\n          data: data.map((d) => d[xField]),\n          axisLine: { lineStyle: { color: $chartAxisColor } },\n          axisLabel: { color: $chartTextColor, fontSize: 10 },\n          axisTick: { show: false },\n        },\n        userXAxis,\n      ),\n      yAxis: mergeOptionBlock(\n        {\n          type: 'value',\n          scale: true,\n          splitLine: { lineStyle: { color: $chartSplitLineColor } },\n          axisLabel: { color: $chartTextColor, fontSize: 11 },\n        },\n        userYAxis,\n      ),\n      series: mergedSeries,\n      ...userRest,\n    }\n  })\n\n  let chart: ECharts | null = null\n\n  // Create once per mount; a ResizeObserver replicates VChart's autoresize.\n  $effect(() => {\n    const el = ref\n    if (!el) return\n    chart = init(el)\n    untrack(() => chart?.setOption(mergedOption))\n    const ro = new ResizeObserver(() => chart?.resize())\n    ro.observe(el)\n    return () => {\n      ro.disconnect()\n      chart?.dispose()\n      chart = null\n    }\n  })\n\n  // Repaint on data / option / theme changes without recreating the instance.\n  $effect(() => {\n    const next = mergedOption\n    untrack(() => chart?.setOption(next))\n  })\n</script>\n\n<div\n  bind:this={ref}\n  role=\"img\"\n  tabindex=\"0\"\n  aria-label={ariaLabel || 'Chart'}\n  style:height={/^\\d+$/.test(String(height)) ? `${height}px` : String(height)}\n  class={cn('focus-visible:ring-ring w-full focus-visible:ring-2 focus-visible:outline-none', className)}\n  {...restProps}\n></div>\n",
      "type": "registry:ui",
      "target": "~/src/lib/components/ui/control-chart/ControlChart.svelte"
    },
    {
      "path": "packages/registry-svelte/components/control-chart/useChartTheme.ts",
      "content": "import { derived, writable } from 'svelte/store'\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 store re-resolves and\n// downstream ECharts options re-paint.\n\nconst themeKey = writable(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.update((v) => v + 1))\n  new MutationObserver(() => themeKey.update((v) => v + 1)).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 = derived(themeKey, () =>\n  Array.from({ length: 5 }, (_, i) => resolveVar(`--chart-${i + 1}`, CHART_FALLBACK[i]!)),\n)\n\nexport const chartTextColor = derived(themeKey, () => resolveVar('--muted-foreground', '#888888'))\n\nexport const chartAxisColor = derived(themeKey, () => resolveVar('--border', '#e5e5e5'))\n\nexport const chartSplitLineColor = derived(themeKey, () => resolveVar('--border', '#f0f0f0'))\n\nexport const chartTooltipBg = derived(themeKey, () => resolveVar('--popover', 'rgba(255,255,255,0.96)'))\n\nexport const chartTooltipBorder = derived(themeKey, () => resolveVar('--border', '#e5e5e5'))\n\nexport const chartTooltipText = derived(themeKey, () => resolveVar('--popover-foreground', '#333333'))\n\nexport const chartBgColor = derived(themeKey, () => resolveVar('--card', resolveVar('--background', '#ffffff')))\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 = derived(themeKey, () => resolveVar('--primary', '#38bdf8'))\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 = derived(themeKey, () => resolveVar('--destructive', '#dc2626'))\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// Static because gauges have semantic meaning (green safe / red danger) that\n// 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": "~/src/lib/components/ui/control-chart/useChartTheme.ts"
    },
    {
      "path": "packages/registry-svelte/components/control-chart/index.ts",
      "content": "export { default as ControlChart, type ControlChartProps } from './ControlChart.svelte'\n",
      "type": "registry:ui",
      "target": "~/src/lib/components/ui/control-chart/index.ts"
    }
  ],
  "dependencies": [
    "echarts"
  ],
  "devDependencies": [],
  "registryDependencies": [],
  "description": "Control (SPC) chart around Apache ECharts. Run line with auto-computed mean ± 2σ limits; out-of-spec points turn red. Theme-aware via registry tokens.",
  "categories": [
    "chart"
  ]
}