{
  "$schema": "https://uipkge.dev/schema/registry-item.json",
  "name": "heatmap",
  "title": "Heatmap",
  "type": "registry:ui",
  "files": [
    {
      "path": "packages/registry-svelte/components/heatmap/Heatmap.svelte",
      "content": "<script lang=\"ts\" module>\n  import type { HTMLAttributes } from 'svelte/elements'\n\n  export interface HeatmapProps extends HTMLAttributes<HTMLDivElement> {\n    /** [xIndex, yIndex, value] tuples. */\n    data: [number, number, number][]\n    xLabels: string[]\n    yLabels: string[]\n    height?: number | string\n    min?: number\n    max?: number\n    option?: any\n    /** Accessible name announced for the chart image. Defaults to \"Chart\". */\n    ariaLabel?: string\n  }\n</script>\n\n<script lang=\"ts\">\n  // @ts-ignore: echarts is a consumer dependency (see heatmap.registry.ts) and is not installed in this package.\n  import { use, init } from 'echarts/core'\n  // @ts-ignore: echarts is a consumer dependency (see heatmap.registry.ts) and is not installed in this package.\n  import { CanvasRenderer } from 'echarts/renderers'\n  // @ts-ignore: echarts is a consumer dependency (see heatmap.registry.ts) and is not installed in this package.\n  import { HeatmapChart as EChartsHeatmap } from 'echarts/charts'\n  // @ts-ignore: echarts is a consumer dependency (see heatmap.registry.ts) and is not installed in this package.\n  import { GridComponent, TooltipComponent, VisualMapComponent } from 'echarts/components'\n  import { cn } from '$lib/utils'\n  import {\n    resolveChartColors,\n    resolveChartTooltipBg,\n    resolveChartTooltipBorder,\n    resolveChartTooltipText,\n    watchTheme,\n  } from './chart-theme'\n\n  use([CanvasRenderer, EChartsHeatmap, GridComponent, TooltipComponent, VisualMapComponent])\n\n  let {\n    class: className,\n    data,\n    xLabels,\n    yLabels,\n    height = 300,\n    min,\n    max,\n    option,\n    ariaLabel,\n    ...restProps\n  }: HeatmapProps = $props()\n\n  let themeKey = $state(0)\n  $effect(() => watchTheme(() => (themeKey += 1)))\n\n  const theme = $derived.by(() => {\n    themeKey // re-resolve CSS tokens when the theme flips\n    return {\n      colors: resolveChartColors(),\n      tooltipBg: resolveChartTooltipBg(),\n      tooltipBorder: resolveChartTooltipBorder(),\n      tooltipText: resolveChartTooltipText(),\n    }\n  })\n\n  const mergedOption = $derived.by(() => {\n    const t = theme\n    const values = data.map((d) => d[2])\n    const computedMin = min ?? Math.min(...values)\n    const computedMax = max ?? Math.max(...values)\n\n    return {\n      grid: { left: 16, right: 16, top: 16, bottom: 16, containLabel: true },\n      tooltip: {\n        position: 'top',\n        backgroundColor: t.tooltipBg,\n        borderColor: t.tooltipBorder,\n        textStyle: { color: t.tooltipText, fontSize: 12 },\n        formatter: (params: any) => `${yLabels[params.value[1]]} / ${xLabels[params.value[0]]}: ${params.value[2]}`,\n      },\n      xAxis: {\n        type: 'category',\n        data: xLabels,\n        splitArea: { show: true },\n        axisLabel: { fontSize: 11 },\n        axisTick: { show: false },\n      },\n      yAxis: {\n        type: 'category',\n        data: yLabels,\n        splitArea: { show: true },\n        axisLabel: { fontSize: 11 },\n        axisTick: { show: false },\n      },\n      visualMap: {\n        min: computedMin,\n        max: computedMax,\n        calculable: true,\n        orient: 'horizontal',\n        left: 'center',\n        bottom: 0,\n        itemWidth: 12,\n        itemHeight: 80,\n        inRange: {\n          color: [t.colors[0], t.colors[1], t.colors[2]],\n        },\n        textStyle: { fontSize: 10 },\n      },\n      series: (() => {\n        const series = [\n          {\n            type: 'heatmap',\n            data,\n            label: { show: false },\n            itemStyle: { borderRadius: 2, borderWidth: 0 },\n            emphasis: {\n              itemStyle: { shadowBlur: 10, shadowColor: 'rgba(0,0,0,0.2)' },\n            },\n          },\n        ]\n        const userSeries = (option as any)?.series\n        return Array.isArray(userSeries) ? series.map((s, i) => ({ ...s, ...(userSeries[i] ?? {}) })) : series\n      })(),\n      // visualMap / tooltip / axes overrides still spread on top — strip\n      // `series` so it doesn't clobber the merged result above.\n      ...(() => {\n        const { series: _, ...rest } = (option as any) ?? {}\n        return rest\n      })(),\n    }\n  })\n\n  const heightStyle = $derived(/^\\d+$/.test(String(height)) ? `${height}px` : String(height))\n\n  let viewport: HTMLDivElement | null = null\n  let chart = $state<{ setOption: (option: unknown) => void } | null>(null)\n\n  $effect(() => {\n    if (!viewport) return\n    const instance = init(viewport)\n    chart = instance\n    const ro = new ResizeObserver(() => instance.resize())\n    ro.observe(viewport)\n    return () => {\n      ro.disconnect()\n      instance.dispose()\n      chart = null\n    }\n  })\n\n  $effect(() => {\n    chart?.setOption(mergedOption)\n  })\n</script>\n\n<div\n  data-uipkge\n  data-slot=\"heatmap\"\n  role=\"img\"\n  tabindex=\"0\"\n  aria-label={ariaLabel || 'Chart'}\n  {...restProps}\n  style=\"height: {heightStyle}\"\n  class={cn('focus-visible:ring-ring w-full focus-visible:ring-2 focus-visible:outline-none', className)}\n>\n  <div bind:this={viewport} class=\"size-full\"></div>\n</div>\n",
      "type": "registry:ui",
      "target": "~/src/lib/components/ui/heatmap/Heatmap.svelte"
    },
    {
      "path": "packages/registry-svelte/components/heatmap/chart-theme.ts",
      "content": "// Svelte port of the Vue `useChartTheme` helper. Framework-free by design:\n// components own a `themeKey` state, re-call these resolvers when it changes,\n// and wire `watchTheme` in an `$effect` (see Heatmap.svelte).\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// 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 function resolveChartColors(): string[] {\n  return Array.from({ length: 5 }, (_, i) => resolveVar(`--chart-${i + 1}`, CHART_FALLBACK[i]!))\n}\n\nexport function resolveChartTextColor(): string {\n  return resolveVar('--muted-foreground', '#888888')\n}\n\nexport function resolveChartAxisColor(): string {\n  return resolveVar('--border', '#e5e5e5')\n}\n\nexport function resolveChartSplitLineColor(): string {\n  return resolveVar('--border', '#f0f0f0')\n}\n\nexport function resolveChartTooltipBg(): string {\n  return resolveVar('--popover', 'rgba(255,255,255,0.96)')\n}\n\nexport function resolveChartTooltipBorder(): string {\n  return resolveVar('--border', '#e5e5e5')\n}\n\nexport function resolveChartTooltipText(): string {\n  return resolveVar('--popover-foreground', '#333333')\n}\n\nexport function resolveChartBgColor(): string {\n  return resolveVar('--card', resolveVar('--background', '#ffffff'))\n}\n\n// The app's accent, for the one highlighted element on a chart or map — a\n// selected route, a focused bar. Category series keep using chartColors.\nexport function resolveChartAccentColor(): string {\n  return resolveVar('--primary', '#38bdf8')\n}\n\n// Out-of-bounds / failure colour for charts that encode good vs bad rather\n// than a category — control limits, error series. CSS-level marks can use\n// `var(--destructive)` directly; this exists because ECharts needs a resolved\n// colour string on the canvas.\nexport function resolveChartDangerColor(): string {\n  return resolveVar('--destructive', '#dc2626')\n}\n\n// Bump the subscriber whenever `<html>` class/style changes (the typical\n// shadcn dark-mode pivot) so consuming components re-resolve tokens and\n// downstream ECharts options re-paint. Also bumps once on the first paint so\n// post-hydration getComputedStyle reads the *resolved* CSS values. Returns a\n// cleanup function for `$effect`.\nexport function watchTheme(onChange: () => void): () => void {\n  if (typeof window === 'undefined') return () => {}\n  const raf = requestAnimationFrame(() => onChange())\n  const observer = new MutationObserver(() => onChange())\n  observer.observe(document.documentElement, {\n    attributes: true,\n    attributeFilter: ['class', 'style', 'data-theme'],\n  })\n  return () => {\n    cancelAnimationFrame(raf)\n    observer.disconnect()\n  }\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": "~/src/lib/components/ui/heatmap/chart-theme.ts"
    },
    {
      "path": "packages/registry-svelte/components/heatmap/index.ts",
      "content": "export { default as Heatmap, type HeatmapProps } from './Heatmap.svelte'\n",
      "type": "registry:ui",
      "target": "~/src/lib/components/ui/heatmap/index.ts"
    }
  ],
  "dependencies": [
    "echarts"
  ],
  "devDependencies": [],
  "registryDependencies": [],
  "description": "Grid heatmap wrapper around Apache ECharts with visualMap color ramp. Theme-aware via registry tokens.",
  "categories": [
    "chart"
  ]
}