{
  "$schema": "https://shadcn-vue.com/schema/registry-item.json",
  "name": "heikin-ashi-chart",
  "title": "Heikin Ashi Chart",
  "type": "registry:ui",
  "files": [
    {
      "path": "packages/registry-vue/components/charts/heikin-ashi-chart/HeikinAshiChart.vue",
      "content": "<script setup lang=\"ts\">\nimport { computed } from 'vue'\nimport { use } from 'echarts/core'\nimport { CanvasRenderer } from 'echarts/renderers'\nimport { CandlestickChart as EChartsCandlestickChart } from 'echarts/charts'\nimport { GridComponent, TooltipComponent, DataZoomComponent } 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, EChartsCandlestickChart, GridComponent, TooltipComponent, DataZoomComponent])\n\ninterface Candle {\n  date: string\n  open: number\n  close: number\n  low: number\n  high: number\n}\n\ninterface Props {\n  data: Candle[]\n  height?: number | string\n  /** Show the bottom data-zoom slider. Default false. */\n  zoom?: boolean\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: 320,\n  zoom: false,\n})\n\n// Heikin-Ashi: each candle averages the previous one, filtering market\n// noise so trends read as uninterrupted bull/bear runs.\nconst ha = computed(() => {\n  let prevOpen = props.data[0]?.open ?? 0\n  let prevClose = props.data[0]?.close ?? 0\n  return props.data.map((c) => {\n    const haClose = (c.open + c.high + c.low + c.close) / 4\n    const haOpen = (prevOpen + prevClose) / 2\n    const haHigh = Math.max(c.high, haOpen, haClose)\n    const haLow = Math.min(c.low, haOpen, haClose)\n    prevOpen = haOpen\n    prevClose = haClose\n    return {\n      date: c.date,\n      open: +haOpen.toFixed(2),\n      close: +haClose.toFixed(2),\n      low: +haLow.toFixed(2),\n      high: +haHigh.toFixed(2),\n    }\n  })\n})\n\nconst mergedOption = computed(() => {\n  const series = [\n    {\n      type: 'candlestick',\n      data: ha.value.map((c) => [c.open, c.close, c.low, c.high]),\n      itemStyle: {\n        color: chartColors.value[1],\n        color0: chartColors.value[3],\n        borderColor: chartColors.value[1],\n        borderColor0: chartColors.value[3],\n      },\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(\n      { left: 16, right: 16, top: 24, bottom: props.zoom ? 60 : 24, containLabel: true },\n      userGrid,\n    ),\n    tooltip: mergeOptionBlock(\n      {\n        trigger: 'axis',\n        axisPointer: { type: 'cross' },\n        backgroundColor: chartTooltipBg.value,\n        borderColor: chartTooltipBorder.value,\n        textStyle: { color: chartTooltipText.value, fontSize: 12 },\n      },\n      userTooltip,\n    ),\n    xAxis: mergeOptionBlock(\n      {\n        type: 'category',\n        data: ha.value.map((c) => c.date),\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        scale: true,\n        splitLine: { lineStyle: { color: chartSplitLineColor.value } },\n        axisLabel: { color: chartTextColor.value, fontSize: 11 },\n      },\n      userYAxis,\n    ),\n    dataZoom: props.zoom ? [{ type: 'slider', bottom: 8, height: 18 }, { type: 'inside' }] : undefined,\n    series: mergedSeries,\n    ...userRest,\n  }\n})\n</script>\n\n<template>\n  <div\n    role=\"img\"\n    tabindex=\"0\"\n    :aria-label=\"ariaLabel || 'Heikin-Ashi 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/heikin-ashi-chart/HeikinAshiChart.vue"
    },
    {
      "path": "packages/registry-vue/components/charts/heikin-ashi-chart/index.ts",
      "content": "export { default as HeikinAshiChart } from './HeikinAshiChart.vue'\n",
      "type": "registry:ui",
      "target": "~/app/components/ui/charts/heikin-ashi-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": "Heikin-Ashi chart around Apache ECharts. OHLC is averaged candle-over-candle in the wrapper so trends read as uninterrupted bull/bear runs. Theme-aware via registry tokens.",
  "categories": [
    "chart"
  ]
}