FunGoo.Widgets 0.3.0

<p align="center"> <img src="fungoo.jpeg" alt="FunGoo" width="720"> </p>

FunGoo

F# helpers and bindings for Goo, a retained desktop UI framework rendered with Vulkan, and for Goo.Widgets, its composable widget library.

Goo is authored in G#. FunGoo is a thin layer of ease-ups for consuming it from F#, without hiding the framework:

• Children helpers — append blobs to Container and Button in one call, from a sequence or inline.
• Fluent setters — chain configuration on the mutable Goo surface (Window, TextEditorController, ShaderEffect).
• Interop helpers — voption wrappers for Try* out-parameter methods, and inline conversions for Length and Color.
• Virtual lists — F# bindings for Goo's virtualized collections over an IReadOnlyList, a sequence, or a count and indexer.
• Widgets — generated bindings for Goo.Widgets in a separate FunGoo.Widgets package: set plain widget properties through constructor assignment, and nullable properties through optional-value setters.

Getting started

Install the packages:

dotnet add package Goo
dotnet add package FunGoo
# optional: widget bindings
dotnet add package Goo.Widgets
dotnet add package FunGoo.Widgets

Describe your UI with plain F# values:

open Goo
open FunGoo.Children

let view =
  Container(Width = Length.Percent 100, Padding = 24, Gap = 12)
    .Children(
      Text(Content = "Hello from F#", FontSize = 24),
      Button(OnClick = fun _ -> printfn "clicked")
        .Children(Text(Content = "Click me"))
    )

Compose Goo.Widgets the same way. Constructor assignment covers plain properties and callbacks, and the generated optional-value setters take nullable properties: call them with a value to set it, or with no argument to reset it to the widget default.

open Goo
open Goo.Widgets.Actions
open FunGoo.Widgets

let reset =
  ActionButton(
    Label = "Reset",
    Height = 42.0,
    OnClick = fun () -> printfn "reset"
  )
    .backgroundColor(Color.Parse("#22c55e"))
    .Build()

See samples/RaznorGoo for a complete media player: Goo widgets, adaptive state, LibVLCSharp audio, runtime SVG icons, and a custom file picker.

Building

Requires the .NET 10 SDK.

dotnet tool restore
dotnet build
dotnet run --project samples/RaznorGoo

License

MIT — see LICENSE.