State improvements

.changeset/add-boxplot-component.md

@@ -0,0 +1,7 @@
+---
+'layerchart': minor
+---
+
+feat: Add BoxPlot component for box-and-whisker plots
+
+New composite mark that renders whiskers, caps, IQR box, median line, and outlier dots. Supports both pre-computed statistics (`min`, `q1`, `median`, `q3`, `max`, `outliers` accessors) and automatic computation from raw values via the `values` prop. Orientation-aware via `valueAxis` context.

.changeset/add-stats-utils.md

@@ -0,0 +1,8 @@
+---
+'layerchart': minor
+---
+
+feat: Add statistical utility functions `computeBoxStats()` and `kde()`
+
+- `computeBoxStats(values, k?)` computes the five-number summary and outliers using the Tukey IQR method
+- `kde(values, options?)` computes kernel density estimation using the Epanechnikov kernel with Silverman's rule-of-thumb bandwidth

.changeset/add-violin-component.md

@@ -0,0 +1,7 @@
+---
+'layerchart': minor
+---
+
+feat: Add Violin component for violin plots
+
+New composite mark that renders a symmetric density curve (mirrored area) from raw data using kernel density estimation (Epanechnikov kernel). Supports pre-computed density data via `density` prop or automatic KDE from raw values via `values` prop. Optional `box` and `median` overlays. Configurable `bandwidth`, `thresholds`, and `curve`.

.changeset/afraid-jobs-say.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(Spline): Support geo projection

.changeset/area-y0-baseline-default.md

@@ -0,0 +1,7 @@
+---
+'layerchart': patch
+---
+
+fix(Area): Default y0 baseline to chart's yBaseline when set
+
+Area's y0 fallback now respects the chart's `yBaseline` prop (e.g. `yBaseline={0}` set by AreaChart) instead of always using `min(yScale.domain())`. This fixes areas filling to the bottom of the chart instead of to the baseline when data goes negative.

.changeset/blue-rules-feel.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(Points|Labels): Correctly position when using x1 / y1 scales (issue #773)

.changeset/breezy-oranges-drive.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat: Add geo projection support for primitives (Circle, Rect, etc)

.changeset/bright-bubbles-zoom.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(Highlight): Add `r` prop to scale highlight points using the chart's rScale. Supports `r={true}` to use the chart's r config or a custom accessor.

.changeset/brush-api-refactor.md

@@ -0,0 +1,22 @@
+---
+'layerchart': minor
+---
+
+breaking(Brush): Redesign brush API
+
+**Breaking changes:**
+
+- Remove `mode` prop ('integrated' | 'separated') — sync behavior is now driven by presence of `x`/`y` props
+- Remove `resetOnEnd` — call `e.brush.reset()` in your `onBrushEnd` handler instead
+- Remove `ignoreResetClick` — replaced by `clickToReset` (default `true`)
+- Remove `onReset` event — check `brush.active === false` in `onBrushEnd`/`onChange` instead
+
+**New features:**
+
+- Add `BrushState.move({ x?, y? })` for programmatic selection control (like d3's `brush.move()`)
+- Add `BrushState.selectAll()` to select the full domain extent
+- Add `BrushState.reset()` to clear the selection
+- Add `clickToReset` prop (default `true`)
+- Add `zoomOnBrush` prop on Chart for simplified charts to opt into brush-to-zoom
+- Move domain clamping, edge adjustment, and range computation logic into `BrushState` class
+- Add `BrushChartContext` interface for easier testing

.changeset/clear-moose-rush.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+refactor(Chart): Add `debug` prop and update `settings` context

.changeset/component-tree.md

@@ -0,0 +1,10 @@
+---
+'layerchart': minor
+---
+
+feat: Unified component tree for Canvas rendering with proper Group transform scoping. Fixes #662
+
+- New `registerComponentNode({ name, kind, canvasRender })` API replaces both `registerCanvasComponent` and the `InsideCompositeMark` boolean context with a single unified component tree.
+- Canvas rendering now walks the tree recursively with proper `save()`/`restore()` scoping, fixing Group transforms (translate, opacity) leaking to sibling components instead of only affecting children.
+- Composite marks (Area, Threshold, Hull, Labels, Grid) register as `'composite-mark'` nodes, automatically preventing child marks from registering with the chart without manual `_skipRegistration` props.
+- Removed `retainState` and `name` from `ComponentRender` type — Group's transform scoping is handled by tree position, and component names live on the tree node.

.changeset/context-bind-state-rename.md

@@ -0,0 +1,18 @@
+---
+'layerchart': major
+---
+
+breaking(BrushContext|TransformContext): Rename `bind:brushContext` / `bind:transformContext` to `bind:state`
+
+Both `BrushContext` and `TransformContext` now use `bind:state` instead of their previous named bindings. Additionally, properties on `ChartState` have been renamed:
+
+- `chartContext.brushContext` → `chartContext.brushState`
+- `chartContext.transformContext` → `chartContext.transformState`
+
+```diff
+- <BrushContext bind:brushContext>
++ <BrushContext bind:state>
+
+- <TransformContext bind:transformContext>
++ <TransformContext bind:state>
+```

.changeset/default-chart-padding.md

@@ -0,0 +1,7 @@
+---
+'layerchart': patch
+---
+
+fix: Default chart padding now applied when using ChartChildren layout (marks snippet)
+
+When `<Chart>` is used with `marks`/`grid`/`axis` snippets (no explicit `children` snippet), default padding is now applied to match the axes that ChartChildren renders by default. When `children` is provided directly (e.g. Treemap, Pack), no default padding is applied since the user controls layout. This can still be overridden with explicit `axis` or `padding` props.

.changeset/domain-extent-original-to-data.md

@@ -0,0 +1,12 @@
+---
+'layerchart': major
+---
+
+breaking(TransformContext): Rename `domainExtent: 'original'` to `domainExtent: 'data'`
+
+The `'original'` value for `domainExtent` has been renamed to `'data'` to better describe that it constrains pan/zoom to the data's domain bounds:
+
+```diff
+- <Chart transform={{ domainExtent: 'original' }}>
++ <Chart transform={{ domainExtent: 'data' }}>
+```

.changeset/download-chart-utils.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat: add `downloadImage`, `downloadSvg`, `getChartImageBlob`, and `getChartSvgString` utilities to export charts as PNG/JPEG/WebP images or SVG files

.changeset/early-bats-wait.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(Tooltip): Apply inverse transform for quadtree lookup when zoomed/panned

.changeset/eighty-foxes-notice.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat: Add Image component. Resolves #628

.changeset/fiery-lamps-tickle.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(SeriesState): Support passing `selected` as part of series declaration (Ex. ` <Chart series={...}>`)

.changeset/fix-area-all-zero.md

@@ -0,0 +1,8 @@
+---
+'layerchart': patch
+---
+
+fix(Area): Handle degenerate domains (e.g. all-zero data) and unify y0/y1 baseline logic
+
+- Guard against degenerate scale domains where min === max (e.g. `[0, 0]`), which caused `yScale()` to return `NaN` and break area path rendering
+- Unify Area y0/y1 path computation to consistently use accessors through the scale, removing duplicate fallback logic

.changeset/fix-barchart-diverging-edge-rounding.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(BarChart): automatically round the outer edge of each direction in `stackDiverging` layout

.changeset/flat-arcs-heal.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix: `flattenPathData` now handles relative arc commands, fixing rounded bars starting below the baseline during mount animation

.changeset/geo-context-rename.md

@@ -0,0 +1,17 @@
+---
+'layerchart': major
+---
+
+breaking(GeoContext): Rename `GeoContext` component to `GeoProjection`
+
+The `GeoContext` component has been renamed to `GeoProjection` to better describe its purpose. Update your imports and template usage:
+
+```diff
+- import { GeoContext } from 'layerchart'
++ import { GeoProjection } from 'layerchart'
+```
+
+```diff
+- <GeoContext projection={geoAlbersUsa}>
++ <GeoProjection projection={geoAlbersUsa}>
+```

.changeset/good-glasses-design.md

@@ -1,5 +1,12 @@
 ---
+'shadcn-svelte-1': patch
+'svelteux-2': patch
+'skeleton-3': patch
+'skeleton4': patch
+'standalone': patch
 'layerchart': patch
+'daisyui-5': patch
+'docs': patch
 ---
 
 Removed lodash-es dependency

.changeset/green-hotels-strive.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(Area|Highlight): Properly handling diveraging stack layouts for negative values (line, highlight point)

.changeset/layer-context-rename.md

@@ -0,0 +1,15 @@
+---
+'layerchart': major
+---
+
+breaking: Rename render context APIs to layer context
+
+- `getRenderContext()` → `getLayerContext()`
+- `setRenderContext()` → `setLayerContext()`
+- `supportedContexts` prop → `layers` prop on components
+- Internal `layout/` directory moved to `layers/` (affects deep imports)
+
+```diff
+- import { getRenderContext } from 'layerchart'
++ import { getLayerContext } from 'layerchart'
+```

.changeset/lucky-cats-stand.md

@@ -0,0 +1,9 @@
+---
+'layerchart': minor
+---
+
+feat: Add data mode to primitive components (Circle, Ellipse, Group, Line, Polygon, Rect, Text)
+
+Primitives now accept string or function accessors for positional props (e.g. `x="date"`, `y={d => d.value}`) to automatically resolve values through chart scales and iterate over data. Components also accept an optional `data` prop to override chart context data.
+
+Color properties (`fill`, `stroke`) can also be data-driven, resolving per-item through the chart's color scale (`cScale`). String values are disambiguated: data property names resolve through `cScale`, while literal CSS colors pass through unchanged.

.changeset/lucky-worlds-share.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(Points|Labels): Correctly position when using array accessors (duration charts, etc). Fixes #633

.changeset/mark-registration.md

@@ -0,0 +1,10 @@
+---
+'layerchart': minor
+---
+
+feat: Mark registration for automatic domain calculation, accessor aggregation, and implicit series
+
+- Marks (Spline, Area, Points, Bars) now register their data, accessors, and colors with the Chart via `registerMark()`.
+- Chart automatically aggregates y/x accessors from marks, removing the need to pass `y={['apples', 'oranges']}` when each mark specifies its own `y`. Works for both horizontal (`valueAxis='y'`) and vertical (`valueAxis='x'`) charts.
+- Per-mark `data` props are included in the chart's domain calculation automatically.
+- Implicit series are generated from mark registrations when no explicit `series` prop is provided, enabling tooltip and legend support without requiring series definitions.

.changeset/new-pans-serve.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat: Add inertia (momentum) support for transform drag gestures

.changeset/nice-regions-ask.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(ClipPath): Support canvas layers. Resolves #660

.changeset/ninety-melons-tickle.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat: Add Cell mark. Resolves #627.

.changeset/orientation-to-valueaxis.md

@@ -0,0 +1,21 @@
+---
+'layerchart': major
+---
+
+breaking(Chart): Remove `isVertical` from ChartState, add `valueAxis` prop to `Chart`
+
+`ChartState.isVertical` has been removed in favor of `ChartState.valueAxis` (`'x'` | `'y'`), which explicitly defines which axis represents the value (dependent variable).
+
+Simplified charts (`BarChart`, `LineChart`, `AreaChart`, `ScatterChart`) still accept the `orientation` prop as before — each chart maps it to the correct `valueAxis` internally. The `<Chart>` component itself now uses `valueAxis` directly, since `orientation` is ambiguous at that level (a "vertical" BarChart has `valueAxis="y"` while a "vertical" LineChart has `valueAxis="x"`).
+
+When accessing chart state:
+```diff
+- if (chartContext.isVertical) { ... }
++ if (chartContext.valueAxis === 'y') { ... }
+```
+
+When using `<Chart>` directly (not simplified charts):
+```diff
+- <Chart ...>
++ <Chart valueAxis="x" ...>
+```

.changeset/pretty-roses-invent.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+breaking(Chart): Rename `tooltip` prop to `tooltipContext` to better describe purpose and fix conflict with new `tooltip` snippet

.changeset/purple-beers-smile.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat: Add Chord layout and Ribbon primitive

.changeset/remove-context-getters.md

@@ -0,0 +1,19 @@
+---
+'layerchart': major
+---
+
+breaking: Remove standalone context getter/setter functions
+
+The following standalone context functions have been removed in favor of the unified `getChartContext()` API:
+
+- `getTooltipContext()` / `setTooltipContext()` → use `getChartContext().tooltip`
+- `getBrushContext()` / `setBrushContext()` → use `getChartContext().brushState`
+- `getTransformContext()` / `setTransformContext()` → use `getChartContext().transformState`
+
+```diff
+- import { getTooltipContext } from 'layerchart'
+- const tooltip = getTooltipContext()
++ import { getChartContext } from 'layerchart'
++ const chart = getChartContext()
++ // access via chart.tooltip
+```

.changeset/rename-scroll-mode.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+breaking(TransformContext): Rename `initialScrollMode` to `scrollMode` and make it reactive

.changeset/ripe-numbers-speak.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+feat(Chart): Support `motion` prop to transition x/y scales using tween or spring

.changeset/scroll-activation-key.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(TransformContext): Add `scrollActivationKey` option to require a modifier key (meta, alt, control, shift) for scroll/wheel zoom/pan, preventing accidental page scroll from triggering transforms

.changeset/shiny-mails-hug.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(Transform): Add zoom/pan constraints (`scaleExtent`, `translateExtent`, `constrain`, `domainExtent`), replace `geo.applyTransform` with `transform.mode: 'projection' | 'rotate'`, and reactively sync initial transform values on projection changes

.changeset/silver-baboons-smile.md

@@ -0,0 +1,5 @@
+---
+'layerchart': major
+---
+
+breaking(Arc|Pie|Calendar|GeoPath): Rename `tooltipContext` to simple `tooltip` (boolean), simplifying use case

.changeset/small-moles-jog.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(Bar): Support fixed `width` and `height` props to override scale-derived dimensions, centering the bar within its band. Resolves #360

.changeset/smooth-bars-grow.md

@@ -0,0 +1,9 @@
+---
+'layerchart': minor
+---
+
+feat: Auto-compute Bar/Bars mount animation initial values from chart scales
+
+Bar now automatically derives `initialY`/`initialHeight` (vertical) or `initialX`/`initialWidth` (horizontal) from the chart's scale range when `motion` is configured, removing the need to hardcode pixel values.
+
+Also improves `valueAxis` inference on `ChartState` — when not explicitly set, it is now derived from scale types (band scale on y → `valueAxis: 'x'`, band scale on x → `valueAxis: 'y'`).

.changeset/smooth-domains-zoom.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(Chart): Add cartesian pan/zoom via `transform={{ mode: 'domain' }}` with single or both axis support. Resolves #366

.changeset/sparkly-mice-peel.md

@@ -0,0 +1,5 @@
+---
+'layerchart': patch
+---
+
+fix(Canavs): support `strokeOpacity` for Path component

.changeset/spline-motion-support.md

@@ -0,0 +1,5 @@
+---
+'layerchart': minor
+---
+
+feat(Spline): Add motion support for mount animation from baseline