InteractiveAppHost<'model, 'msg> (FS-Skia-UI)

InteractiveAppHost<'model, 'msg> Type

Namespace: FS.Skia.UI.Controls.Elmish
Assembly: FS.Skia.UI.Controls.Elmish.dll
Base Type: obj

Pointer-routing, size-aware durable host (feature 085, research D3-AMEND). Mirrors `GeneratedAppHost` field-for-field PLUS a `MapPointer` seam over `PointerInteraction` and a size-carrying `View` that returns a `Control<'msg>` tree (so `Control.renderTree` yields the `Scene` + `Layout` + `EventBindings` the host routes). Lives in Controls.Elmish — not SkiaViewer — because `PointerInteraction`/`interpretPointerOutcome` are Controls surface and the viewer is host-independent. `Theme` drives `renderTree`. Feature 090: a hit control's authored `EventBindings` (`onClick`/`onChanged`) are dispatched in the live window; `MapKey` gains a focus-aware text-routing seam for the focused text control (see `routeInteractivePointer`, `routeFocusedText`, and `runInteractiveApp`). Feature 108: the additive `MapKeyChord` / `OnFrameMetrics` fields carry inert defaults (at-rest byte-identical).

Record fields

Record Field	Description
`Diagnostics` Full Usage: `Diagnostics` Field type: `ViewerDiagnosticsOptions`	Field type: `ViewerDiagnosticsOptions`
`Init` Full Usage: `Init` Field type: `unit -> 'model * ViewerEffect list`	Field type: `unit -> 'model * ViewerEffect list`
`MapKey` Full Usage: `MapKey` Field type: `ViewerKey -> bool -> 'msg option`	Field type: `ViewerKey -> bool -> 'msg option`
`MapKeyChord` Full Usage: `MapKeyChord` Field type: `ViewerKey -> KeyModifiers -> 'msg option`	Feature 108 (US5, FR-016): an additive modifier-aware key seam consulted BEFORE `MapKey`. The default (`fun _ _ -> None`) ignores modifiers and defers to `MapKey`, so unmodified keys route exactly as today (at-rest byte-identical, SC-012). Field type: `ViewerKey -> KeyModifiers -> 'msg option`
`MapPointer` Full Usage: `MapPointer` Field type: `PointerInteraction -> 'msg option`	Field type: `PointerInteraction -> 'msg option`
`OnFrameMetrics` Full Usage: `OnFrameMetrics` Field type: `FrameMetrics -> unit`	Feature 108 (US2, FR-006): an additive opt-in observability sink called once per frame with that frame's `FrameMetrics`. The default (`ignore`) is inert, so a host that does not observe metrics is byte-identical to its pre-108 behaviour (SC-012). Field type: `FrameMetrics -> unit`
`Theme` Full Usage: `Theme` Field type: `Theme`	Field type: `Theme`
`Tick` Full Usage: `Tick` Field type: `TimeSpan -> 'msg option`	Field type: `TimeSpan -> 'msg option`
`Update` Full Usage: `Update` Field type: `'msg -> 'model -> 'model * ViewerEffect list`	Field type: `'msg -> 'model -> 'model * ViewerEffect list`
`View` Full Usage: `View` Field type: `Size -> 'model -> Control<'msg>`	Field type: `Size -> 'model -> Control<'msg>`