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)

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

Layouts	All FlorisBoard layouts (QWERTY, QWERTZ, AZERTY, Dvorak, Colemak, Workman, BÉPO, Neo2, JCUKEN, Greek, Hebrew, Arabic, Persian, Hindi, Bengali, Tamil, Thai, Korean, Japanese JIS, Armenian, Georgian and many more), symbols pages, numeric, phone and advanced numeric pads. Add your own in JSON.
70+ languages	FlorisBoard subtype presets with per-language popups (accents), currency symbols, punctuation rules and composers (Hangul syllables, Japanese kana, Vietnamese Telex).
Glide typing	C# port of FlorisBoard's statistical glide classifier with live preview and a fading trail.
Gestures	Configurable swipe up/down/left/right, space bar cursor control, swipe-to-delete words precisely, long-press actions, multi-touch rollover, shift chording, key repeat.
Smart typing	Word completion, keyboard-aware autocorrect (with undo on backspace), next-word prediction, learning user dictionary, auto-capitalization, double-space period, smart punctuation spacing.
Emoji	Complete CLDR emoji set with categories, skin tones, recents & pinning, keyword search in 6 languages, :shortcode suggestions and classic emoticons.
Clipboard	Clipboard history with pinning, expiry and one-tap paste; recently copied text suggested in the smartbar.
Editing panel	Cursor pad, selection mode, select all, copy/cut/paste, undo/redo, line and document navigation.
Theming	12 built-in themes (Floris Day/Night/borderless/AMOLED, Material, Nord, Ocean, Rosé, High Contrast, Terminal), light/dark following the system, JSON themes and per-key style rules.
Configurable	60+ observable settings: key height (plus interactive resize mode), spacing, font scale, one-handed mode, split keyboard, floating keyboard, number row, hint priority, utility key, smartbar layout, haptics, incognito…
Accessible	Automation names on keys, high-contrast theme, adjustable sizes and delays.

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

Floating, draggable keyboard

Packages

Package	Description
ScreenKeyboard.Uno	The Uno Platform controls (OnScreenKeyboard, ScreenKeyboardHost), themes and input adapters.
ScreenKeyboard.Core	UI-independent engine: layouts, key computation, gestures, glide typing, NLP, emoji, clipboard, settings. Usable from any .NET UI framework.

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

Topic
Getting started	Installation, host vs. standalone keyboard, first steps
Input integration	TextBox/PasswordBox, InputScope mapping, attached properties, enter actions, custom targets
Layouts & languages	FlorisBoard JSON format, custom layouts, subtypes, popups, composers, currency sets
Theming	Built-in themes, custom themes in C#, XAML and JSON, key style rules
Configuration	Every KeyboardSettings option, persistence
Gestures & glide typing	Swipe actions, space bar and delete gestures, glide typing
Suggestions & dictionaries	Autocorrect, predictions, user dictionary, custom dictionaries and providers
Emoji & clipboard	Emoji catalog, skin tones, search, fonts; clipboard history
Architecture	Engine, touch processor, rendering, extending the keyboard
Building & releasing	Repository layout, tests, samples, CI, NuGet packaging

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