Terminal.Gui - Cross Platform Terminal UI toolkit for .NET
A toolkit for building rich console apps for .NET, .NET Core, and Mono that works on Windows, the Mac, and Linux/Unix.
Documentation
- Documentation Home
- Terminal.Gui Overview
- List of Views/Controls
- Conceptual Documentation
- API Documentation
The Documentation matches the most recent Nuget release from the main
branch ()
Features
- Cross Platform - Windows, Mac, and Linux. Terminal drivers for Curses, Windows Console, and the .NET Console mean apps will work well on both color and monochrome terminals.
- Keyboard and Mouse Input - Both keyboard and mouse input are supported, including support for drag & drop.
- Flexible Layout - Supports both Absolute layout and an innovative Computed Layout system. Computed Layout makes it easy to layout controls relative to each other and enables dynamic terminal UIs.
- Clipboard support - Cut, Copy, and Paste of text provided through the
Clipboard
class. - Arbitrary Views - All visible UI elements are subclasses of the
View
class, and these in turn can contain an arbitrary number of sub-views. - Advanced App Features - The Mainloop supports processing events, idle handlers, timers, and monitoring file descriptors. Most classes are safe for threading.
- Reactive Extensions - Use reactive extensions and benefit from increased code readability, and the ability to apply the MVVM pattern and ReactiveUI data bindings. See the source code of a sample app in order to learn how to achieve this.
Showcase & Examples
- UI Catalog - The UI Catalog project provides an easy to use and extend sample illustrating the capabilities of Terminal.Gui. Run
dotnet run --project UICatalog
to run the UI Catalog. - Reactive Example - A sample app that shows how to use
System.Reactive
andReactiveUI
withTerminal.Gui
. The app uses the MVVM architecture that may seem familiar to folks coming from WPF, Xamarin Forms, UWP, Avalonia, or Windows Forms. In this app, we implement the data bindings using ReactiveUIWhenAnyValue
syntax and Pharmacist — a tool that converts all events in a NuGet package into observable wrappers. - Example (aka
demo.cs
) - Rundotnet run
in theExample
directory to run the simple demo. - Standalone Example - A trivial .NET core sample application can be found in the
StandaloneExample
directory. Rundotnet run
in directory to test. - F# Example - An example showing how to build a Terminal.Gui app using F#.
- PowerShell's
Out-ConsoleGridView
-OCGV
sends the output from a command to an interactive table. - PoshRedisViewer - A compact Redis viewer module for PowerShell written in F# and Gui.cs
- TerminalGuiDesigner - Cross platform view designer for building Terminal.Gui applications.
See the Terminal.Gui/
README for an overview of how the library is structured. The Conceptual Documentation provides insight into core concepts.
Sample Usage
(This code uses C# 9.0 Top-level statements.)
using Terminal.Gui;
using NStack;
Application.Init();
var top = Application.Top;
// Creates the top-level window to show
var win = new Window("MyApp")
{
X = 0,
Y = 1, // Leave one row for the toplevel menu
// By using Dim.Fill(), it will automatically resize without manual intervention
Width = Dim.Fill(),
Height = Dim.Fill()
};
top.Add(win);
// Creates a menubar, the item "New" has a help menu.
var menu = new MenuBar(new MenuBarItem[] {
new MenuBarItem ("_File", new MenuItem [] {
new MenuItem ("_New", "Creates new file", null),
new MenuItem ("_Close", "",null),
new MenuItem ("_Quit", "", () => { if (Quit ()) top.Running = false; })
}),
new MenuBarItem ("_Edit", new MenuItem [] {
new MenuItem ("_Copy", "", null),
new MenuItem ("C_ut", "", null),
new MenuItem ("_Paste", "", null)
})
});
top.Add(menu);
static bool Quit()
{
var n = MessageBox.Query(50, 7, "Quit Demo", "Are you sure you want to quit this demo?", "Yes", "No");
return n == 0;
}
var login = new Label("Login: ") { X = 3, Y = 2 };
var password = new Label("Password: ")
{
X = Pos.Left(login),
Y = Pos.Top(login) + 1
};
var loginText = new TextField("")
{
X = Pos.Right(password),
Y = Pos.Top(login),
Width = 40
};
var passText = new TextField("")
{
Secret = true,
X = Pos.Left(loginText),
Y = Pos.Top(password),
Width = Dim.Width(loginText)
};
// Add some controls,
win.Add(
// The ones with my favorite layout system, Computed
login, password, loginText, passText,
// The ones laid out like an australopithecus, with Absolute positions:
new CheckBox(3, 6, "Remember me"),
new RadioGroup(3, 8, new ustring[] { "_Personal", "_Company" }, 0),
new Button(3, 14, "Ok"),
new Button(10, 14, "Cancel"),
new Label(3, 18, "Press F9 or ESC plus 9 to activate the menubar")
);
Application.Run();
Application.Shutdown();
The example above shows adding views using both styles of layout supported by Terminal.Gui: Absolute layout and Computed layout.
Alternatively, you can encapsulate the app behavior in a new Window
-derived class, say App.cs
containing the code above, and simplify your Main
method to:
using Terminal.Gui;
class Demo {
static void Main ()
{
Application.Run<App> ();
Application.Shutdown ();
}
}
Installing
Use NuGet to install the Terminal.Gui
NuGet package: https://www.nuget.org/packages/Terminal.Gui
Installation in .NET Core Projects
To install Terminal.Gui into a .NET Core project, use the dotnet
CLI tool with following command.
dotnet add package Terminal.Gui
See CONTRIBUTING.md for instructions for downloading and forking the source.
Running and Building
- Windows, Mac, and Linux - Build and run using the .NET SDK command line tools (
dotnet build
in the root directory). RunUICatalog
withdotnet run --project UICatalog
. - Windows - Open
Terminal.Gui.sln
with Visual Studio 2019.
Contributing
See CONTRIBUTING.md.
Debates on architecture and design can be found in Issues tagged with design.
History
This is an updated version of gui.cs that Miguel wrote for mono-curses in 2007.
The original gui.cs was a UI toolkit in a single file and tied to curses. This version tries to be console-agnostic and instead of having a container/widget model, only uses Views (which can contain subviews) and changes the rendering model to rely on damage regions instead of burdening each view with the details.
A presentation of this was part of the Retro.NET talk at .NET Conf 2018 Slides
The most recent release notes can be found in the Terminal.Gui.csproj file.