ScreenKeyboard.Core 1.0.0

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ScreenKeyboard

A professional, open-source on-screen keyboard for Uno Platform — inspired by and built on FlorisBoard.

Glide (swipe) typing · gestures · emoji · clipboard history · smart suggestions · 90+ layouts · 70+ languages · fully themable

Live demo (WebAssembly)

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ScreenKeyboard brings a mobile-grade keyboard to every Uno Platform target — WebAssembly, Windows, macOS, Linux (X11 and framebuffer), Android and iOS. It is ideal for kiosks, point-of-sale terminals, industrial panels, touch-screen desktops, in-car and TV apps, and any application that needs full control over text input.

The typing engine is platform independent (ScreenKeyboard.Core, pure .NET, fully unit tested), and the UI (ScreenKeyboard.Uno) is a lightweight, code-built WinUI control that never steals focus from your text fields.

Highlights

Glide typing with live predictions	Long-press popups with accents and symbols
Emoji panel with categories and skin tones	Floris Night theme with number row
Split keyboard for tablets	One-handed mode (Material Dark)
Phone pad and quick actions	Custom theme defined in XAML

<p align="center"><img src="docs/images/floating.png" width="70%" alt="Floating keyboard" /><br/><em>Floating, draggable keyboard</em></p>

Packages

Targets: net10.0 (Skia desktop & reference), net10.0-desktop, net10.0-browserwasm, net10.0-android, net10.0-ios and net10.0-windows10.0.26100 (WinAppSDK). Built with Uno.Sdk 6.7.

Quick start

dotnet add package ScreenKeyboard.Uno

Wrap your page content in a ScreenKeyboardHost. The keyboard slides in whenever a TextBox or PasswordBox gets focus and keeps the focused field visible:

<Page xmlns:sk="using:ScreenKeyboard.Controls">
  <sk:ScreenKeyboardHost>
    <StackPanel Spacing="12" Padding="24">
      <TextBox Header="Name" InputScope="PersonalFullName" />
      <TextBox Header="Email" InputScope="EmailSmtpAddress" sk:ScreenKeyboardInput.EnterAction="Next" />
      <TextBox Header="Amount" InputScope="Number" />
      <PasswordBox Header="PIN" />
    </StackPanel>
  </sk:ScreenKeyboardHost>
</Page>

Or place the keyboard yourself — it attaches to the focused input of its window automatically:

<Grid RowDefinitions="*,Auto">
  <TextBox AcceptsReturn="True" />
  <sk:OnScreenKeyboard Grid.Row="1" />
</Grid>

Configure everything in code:

var keyboard = host.Keyboard;
keyboard.Settings.Subtypes = ["en-US/qwerty", "de-DE/qwertz", "fr-FR/azerty"];
keyboard.Settings.ThemeMode = ThemeMode.Dark;
keyboard.Settings.DarkTheme = "floris_pure_night";
keyboard.Settings.NumberRow = true;
keyboard.Settings.OneHandedMode = OneHandedMode.Right;
keyboard.EnterActionRequested += (s, e) => { if (e.Action == EnterAction.Search) { Search(); e.Handled = true; } };

On WebAssembly (and other Skia targets without a color emoji font) enable emoji rendering once at startup:

if (OperatingSystem.IsBrowser())
    EmojiFontFallback.UseNotoColorEmoji();

Documentation

Sample app

Try it online: https://wieslawsoltes.github.io/ScreenKeyboardControl/

samples/ScreenKeyboard.Sample demonstrates every feature with a live settings pane (themes, languages, gestures, typing options) and persistence of settings, learned words and emoji history.

dotnet run --project samples/ScreenKeyboard.Sample -f net10.0-desktop
dotnet run --project samples/ScreenKeyboard.Sample -f net10.0-browserwasm

Start-up options such as ?theme=dark&onehanded=right&langs=en-US/qwerty,de-DE/qwertz (WebAssembly) or --theme=dark (desktop) make it easy to try configurations.

Using the engine without Uno

ScreenKeyboard.Core has no UI dependencies. Drive it from tests, another UI framework or a server:

var engine = new KeyboardEngine();
var field = new TextBufferTarget();
engine.Attach(field);
engine.TypeText("i like teh ");
Console.WriteLine(field.Text); // "I like the "

Credits

ScreenKeyboard would not exist without FlorisBoard by Patrick Goldinger and contributors: its layouts, localization data, emoji data, dictionary and several algorithms (glide typing, layout merging and key sizing, composers) are used or ported under the Apache License 2.0. Icons are Material Symbols. See NOTICE and THIRD-PARTY-NOTICES.

Contributing

Contributions are welcome — see CONTRIBUTING.md. Please report security issues as described in SECURITY.md.

License

Apache License 2.0