{
  "$schema": "https://shadcn-vue.com/schema/registry-item.json",
  "name": "quadrant-chart",
  "title": "Quadrant Chart",
  "type": "registry:ui",
  "files": [
    {
      "path": "packages/registry-vue/components/charts/quadrant-chart/QuadrantChart.vue",
      "content": "<script setup lang=\"ts\">\nimport { computed } from 'vue'\nimport { use } from 'echarts/core'\nimport { CanvasRenderer } from 'echarts/renderers'\nimport { ScatterChart as EChartsScatterChart } from 'echarts/charts'\nimport {\n  GridComponent,\n  TooltipComponent,\n  MarkLineComponent,\n  MarkAreaComponent,\n  LegendComponent,\n} from 'echarts/components'\nimport VChart from 'vue-echarts'\nimport { cn } from '@/lib/utils'\nimport {\n  chartColors,\n  chartTextColor,\n  chartSplitLineColor,\n  chartTooltipBg,\n  chartTooltipBorder,\n  chartTooltipText,\n  mergeOptionBlock,\n} from '../useChartTheme'\n\nuse([\n  CanvasRenderer,\n  EChartsScatterChart,\n  GridComponent,\n  TooltipComponent,\n  MarkLineComponent,\n  MarkAreaComponent,\n  LegendComponent,\n])\n\nfunction median(vals: number[]) {\n  const s = [...vals].sort((a, b) => a - b)\n  const m = Math.floor(s.length / 2)\n  return s.length % 2 ? s[m]! : ((s[m - 1] ?? 0) + (s[m] ?? 0)) / 2\n}\n\ninterface Props {\n  data: { x: number; y: number; label?: string }[]\n  /** Split lines. Default to the data medians. */\n  xMid?: number\n  yMid?: number\n  /** Clockwise from top-right: [stars, question marks, dogs, cash cows]. */\n  quadrantLabels?: [string, string, string, string]\n  xName?: string\n  yName?: string\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  quadrantLabels: () => ['Stars', 'Question marks', 'Dogs', 'Cash cows'],\n  height: 340,\n})\n\nconst splits = computed(() => ({\n  x: props.xMid ?? median(props.data.map((d) => d.x)),\n  y: props.yMid ?? median(props.data.map((d) => d.y)),\n}))\n\nconst mergedOption = computed(() => {\n  const { x, y } = splits.value\n  const quad = (name: string, x0: number | string, x1: number | string, y0: number | string, y1: number | string) => [\n    {\n      xAxis: x0,\n      yAxis: y0,\n      itemStyle: { color: chartColors.value[0], opacity: 0.05 },\n      label: {\n        show: true,\n        position: 'inside',\n        color: chartTextColor.value,\n        fontSize: 12,\n        fontWeight: 700,\n        formatter: name,\n      },\n    },\n    { xAxis: x1, yAxis: y1 },\n  ]\n  const series = [\n    {\n      type: 'scatter',\n      symbolSize: 12,\n      itemStyle: { color: chartColors.value[0], opacity: 0.85 },\n      label: {\n        show: true,\n        position: 'top',\n        color: chartTextColor.value,\n        fontSize: 10,\n        formatter: (p: any) => p.value[2] ?? '',\n      },\n      markLine: {\n        silent: true,\n        symbol: 'none',\n        lineStyle: { type: 'dashed', color: chartTextColor.value, opacity: 0.6 },\n        label: { show: false },\n        data: [{ xAxis: x }, { yAxis: y }],\n      },\n      markArea: {\n        silent: true,\n        data: [\n          quad(props.quadrantLabels[0], x, 'max', y, 'max'),\n          quad(props.quadrantLabels[1], 'min', x, y, 'max'),\n          quad(props.quadrantLabels[2], 'min', x, 'min', y),\n          quad(props.quadrantLabels[3], x, 'max', 'min', y),\n        ],\n      },\n      data: props.data.map((d) => [d.x, d.y, d.label ?? '']),\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  const xs = props.data.map((d) => d.x)\n  const ys = props.data.map((d) => d.y)\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      },\n      userTooltip,\n    ),\n    legend: { show: false },\n    xAxis: mergeOptionBlock(\n      {\n        type: 'value',\n        name: props.xName,\n        min: Math.min(...xs) - 1,\n        max: Math.max(...xs) + 1,\n        nameTextStyle: { color: chartTextColor.value, fontSize: 10 },\n        splitLine: { lineStyle: { color: chartSplitLineColor.value } },\n        axisLabel: { color: chartTextColor.value, fontSize: 11 },\n      },\n      userXAxis,\n    ),\n    yAxis: mergeOptionBlock(\n      {\n        type: 'value',\n        name: props.yName,\n        min: Math.min(...ys) - 1,\n        max: Math.max(...ys) + 1,\n        nameTextStyle: { color: chartTextColor.value, fontSize: 10 },\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 || '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/quadrant-chart/QuadrantChart.vue"
    },
    {
      "path": "packages/registry-vue/components/charts/quadrant-chart/index.ts",
      "content": "export { default as QuadrantChart } from './QuadrantChart.vue'\n",
      "type": "registry:ui",
      "target": "~/app/components/ui/charts/quadrant-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": "Quadrant (2×2 matrix) chart around Apache ECharts. Median-split scatter with labelled strategy quadrants. Theme-aware via registry tokens.",
  "categories": [
    "chart"
  ]
}