Distance in points/dp from the baseline to the canvas bottom. Only used when the built-in toolbar is hidden; otherwise the baseline auto-anchors to the toolbar's top edge for symmetric icon gaps.
baselineStyle?
WithDefault<string, "dashed">
Baseline line style: 'solid', 'dashed' (default), or 'dotted'. Unrecognised values fall back to 'dashed'.
baselineWidth?
number
Baseline stroke width in points/dp. 0 (the default) means "use the per-style auto value"; any positive value overrides it.
defaultInkType?
WithDefault<string, "pen">
Initial PencilKit ink type (iOS only).
inkBackgroundColor?
____ColorValue_Internal
Canvas background color. Named inkBackgroundColor natively so it doesn't collide with the host backgroundColor Fabric style prop; the high-level wrapper re-maps the public backgroundColor prop onto this name.
onBegin?
DirectEventHandler<null>
Stroke begin.
onEnd?
DirectEventHandler<null>
Stroke end.
onReplayProgress?
DirectEventHandler<ReplayProgressPayload>
Fires every frame while replay() is running.
onResult?
DirectEventHandler<ResultPayload>
Generic back-channel for Promise-based commands. The JS wrapper matches requestId to a pending Promise.
onStrokesChange?
DirectEventHandler<ChangePayload>
Drawing content changed (new stroke, undo/redo, clear, setStrokeData). Named onStrokesChange (not onChange) because React Native's core already registers topChange as a bubbling event for TextInput / Switch, which would clobber our payload typing.
onToolbarAction?
DirectEventHandler<ToolbarActionPayload>
Fires after a built-in toolbar button is tapped.
pencilOnly?
WithDefault<boolean, false>
iOS: only Apple Pencil input is accepted. Android: only TOOL_TYPE_STYLUS events are accepted.
penColor?
____ColorValue_Internal
Ink color (captured literally on iOS; PencilKit auto-inversion is disabled).
penMaxWidth?
number
Maximum stroke width at the slowest pen velocity, in the same density-independent units as penMinWidth. Default: 3.
penMinWidth?
number
Minimum stroke width at the fastest pen velocity, in density-independent units (points on iOS, dp on Android). A given value renders at the same physical thickness on both platforms and across all screen densities. Default: 1.
showBaseline?
WithDefault<boolean, false>
Show the signing baseline.
showToolbar?
WithDefault<boolean, false>
Render the built-in native toolbar.
showToolPicker?
WithDefault<boolean, false>
Attach PencilKit's system tool picker (iOS only).
toolbarBackgroundColor?
____ColorValue_Internal
Toolbar background fill.
toolbarHeight?
number
Toolbar height in points/dp. With auto-anchored baseline, the symmetric vertical gap above/below the icons equals (toolbarHeight - iconVisualHeight) / 2.
toolbarIconSpacing?
number
Horizontal gap in points/dp between adjacent toolbar buttons.
toolbarItemsJson?
WithDefault<string, "">
JSON-serialized array of toolbar item objects (the high-level wrapper maps the public toolbarButtons prop onto this). Each entry is { id, icon?, text?, tintColor?, accessibilityLabel, disabled }, where tintColor is a processed color int. An empty string means "use the default undo/redo/clear/copy toolbar".
toolbarMaxVisibleButtons?
WithDefault<number, 0>
Hard cap on inline buttons; extras collapse into an overflow menu. 0 means "compute from available width at layout time".
toolbarPosition?
WithDefault<string, "bottom">
'top'
toolbarTintColor?
____ColorValue_Internal
Toolbar icon tint (SF Symbols on iOS, vector drawables on Android).
velocityFilterWeight?
number
Android only: velocity smoother weight (0..1). Ignored on iOS.
