# Solid Chart

```tsx
import { Chart } from '@tanstack/solid-charts'
```

The definition infers datum and coordinate types for every callback. Replace
its identity when captured application values change.
It also owns focus, tooltip, animation, keyboard policy, focus distance, and
spatial indexing.

## Props

| Prop                 | Type                                                      | Default               | Meaning                                                |
| -------------------- | --------------------------------------------------------- | --------------------- | ------------------------------------------------------ |
| `definition`         | `ChartDefinition`                                         | Required              | Framework-neutral chart definition                     |
| `ariaLabel`          | `string`                                                  | Required              | Accessible chart name                                  |
| `ariaDescription`    | `string`                                                  | None                  | Optional accessible description                        |
| `height`             | `number`                                                  | `320` without a ratio | Fixed CSS and scene height                             |
| `aspectRatio`        | `number`                                                  | None                  | Positive width-to-height ratio when height is absent   |
| `width`              | `number`                                                  | Responsive            | Fixed CSS and scene width                              |
| `initialWidth`       | `number`                                                  | `640`                 | Initial and server width before responsive measurement |
| `tabIndex`           | `number`                                                  | `0`                   | Surface tab index; `keyboard: false` forces `-1`       |
| `idPrefix`           | `string`                                                  | Generated             | Prefix for renderer-owned document IDs                 |
| `renderSvg`          | `ChartSvgRenderer<TDatum, TXValue, TYValue>`              | `renderChartSvg`      | Scene-to-SVG renderer                                  |
| `measureText`        | `ChartTextMeasurer`                                       | Host measurer         | Guide text measurement                                 |
| `onFocusChange`      | `(point: ChartPoint \| null) => void`                     | None                  | Primary focus callback                                 |
| `onFocusGroupChange` | `(points: readonly ChartPoint[]) => void`                 | None                  | Grouped focus callback                                 |
| `onSelect`           | `(point: ChartPoint \| null) => void`                     | None                  | Pointer or keyboard activation callback                |
| `onRender`           | `(context: ChartRenderContext) => void`                   | None                  | Live SVG, container, and scene after rendering         |
| `renderTooltipBody`  | `(context: ChartTooltipBodyRenderContext) => JSX.Element` | None                  | Composes Solid content inside the native tooltip body  |
| `class`              | `string`                                                  | None                  | Extra class on the outer `.ts-chart-host`              |
| `style`              | `JSX.CSSProperties`                                       | None                  | Outer host styles applied after adapter sizing         |
| `className`          | `string`                                                  | None                  | Extra class on the rendered SVG surface                |

`renderTooltipBody` receives `points`, `content`, `defaultBody`, `pinned`, and
`dismiss`. Include `defaultBody` to keep the native title, rows, formatting,
and swatches. Ordering, anchoring, placement, portaling, and pinning remain in
the definition. Read fields from the callback context instead of destructuring
its parameter so Solid tracks focused-point and pinned-state changes.

## Exported types

`ChartCommonProps` contains the common host and presentation props.
`ChartProps` adds the definition. `ChartPresentationProps` contains `class`
and `style`. `ChartTooltipBodyRenderContext` describes composed tooltip
content. The package also re-exports `ChartDefinition` and `ChartPoint`.

See the [Solid adapter](../adapter.md) for lifecycle and SSR behavior,
[Focus and interaction](../../../reference/focus-and-interaction.md) for
callback semantics, and [Rendering and export](../../../reference/rendering-and-export.md)
for custom SVG renderers.