Pointer (FS-Skia-UI) | FS-Skia-UI

Pointer Module

Namespace: FS.Skia.UI.Controls
Assembly: FS.Skia.UI.Controls.dll

Public contract module exposed by this FS.Skia.UI package: the pointer coordination front door (pure, host-independent, replayable). FR-001/FR-009.

Functions and values

Function or value	Description
`init ()` Full Usage: `init ()` Parameters: () : `unit` Returns: `PointerState`	Initial coordination state with the default 4.0 px click-vs-drag threshold (FR-006). Override per coordinator with `{ Pointer.init () with DragThreshold = … }`. () : `unit` Returns: `PointerState`
`origin` Full Usage: `origin` Returns: `PointerOrigin`	The single pointer origin tag, used to distinguish pointer-originated interactions from keyboard/text/focus ones when consumers flatten them into one message stream (FR-011). Returns: `PointerOrigin`
`replay policy layout messages initial` Full Usage: `replay policy layout messages initial` Parameters: policy : `PixelSnapPolicy` layout : `LayoutResult` messages : `PointerMsg list` initial : `PointerState` Returns: `PointerState * PointerInteraction list`	Replay a recorded message sequence to a final state + accumulated effects; identical input yields identical output (SC-005). policy : `PixelSnapPolicy` layout : `LayoutResult` messages : `PointerMsg list` initial : `PointerState` Returns: `PointerState * PointerInteraction list`
`toMsg sample` Full Usage: `toMsg sample` Parameters: sample : `PointerSample` Returns: `PointerMsg option`	Map a neutral sample to a transition message (None when not actionable). sample : `PointerSample` Returns: `PointerMsg option`
`update policy layout msg state` Full Usage: `update policy layout msg state` Parameters: policy : `PixelSnapPolicy` layout : `LayoutResult` msg : `PointerMsg` state : `PointerState` Returns: `PointerState * PointerInteraction list * ControlRuntimeMsg list`	Pure reducer. Hit-tests via Layout.hitTestComputed against the supplied LayoutResult (an input, never fetched inside update — keeps update pure and deterministic/replayable, FR-009/SC-005). Emits ordered interactions plus the ControlRuntimeMsg list to keep ControlRuntime's hover/press/drag/focus state consistent. policy : `PixelSnapPolicy` layout : `LayoutResult` msg : `PointerMsg` state : `PointerState` Returns: `PointerState * PointerInteraction list * ControlRuntimeMsg list`