Line View (#4260)
* Initial plan * Add comprehensive analysis of Line implementation status Co-authored-by: tig <585482+tig@users.noreply.github.com> * Complete Line implementation with documentation, example, and tests Co-authored-by: tig <585482+tig@users.noreply.github.com> * Add PR summary documenting Line implementation completion Co-authored-by: tig <585482+tig@users.noreply.github.com> * Add comprehensive completion report for Issue 4150 Co-authored-by: tig <585482+tig@users.noreply.github.com> * Fix Line rendering: use SuperView's LineCanvas instead of own Co-authored-by: tig <585482+tig@users.noreply.github.com> * Redesign Line to use Border instead of manual LineCanvas Co-authored-by: tig <585482+tig@users.noreply.github.com> * Add Line.Style property to avoid BorderStyle conflict Co-authored-by: tig <585482+tig@users.noreply.github.com> * Add SetWidth/SetHeight methods to preserve dimensions on Orientation change Co-authored-by: tig <585482+tig@users.noreply.github.com> * Implement CWP events for Width/Height properties; update Line to use events Co-authored-by: tig <585482+tig@users.noreply.github.com> * WIP: Updating Line. Cleaned up Layout tests. * Made Height/Width non-nullable * Add doWork stage to CWPPropertyHelper to execute between Changing and Changed events Co-authored-by: tig <585482+tig@users.noreply.github.com> * Move ViewLayoutEventTests to parallelizable tests without AutoInitShutdown Co-authored-by: tig <585482+tig@users.noreply.github.com> * Replace tracking fields with Length property for thread-safe Line implementation Co-authored-by: tig <585482+tig@users.noreply.github.com> * Fix orientation handling to preserve user-set dimensions in object initializers Co-authored-by: tig <585482+tig@users.noreply.github.com> * Simplify orientation handling with dimension swapping - all tests passing Co-authored-by: tig <585482+tig@users.noreply.github.com> * Add Length backing field and fix object initializer dimension handling Co-authored-by: tig <585482+tig@users.noreply.github.com> * Use CWP OnChanging events to manage dimensions instead of OnChanged Co-authored-by: tig <585482+tig@users.noreply.github.com> * Move LineTests to parallelizable; simplify tests with GetAnchor; fix Length property Co-authored-by: tig <585482+tig@users.noreply.github.com> * Code cleanup. * Code cleanup. * Update Terminal.Gui/ViewBase/View.Layout.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Terminal.Gui/ViewBase/View.Layout.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Terminal.Gui/ViewBase/View.Layout.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Terminal.Gui/ViewBase/View.Layout.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Fixed nullable warning in test * Removed PR files and updated copilot guidance * Reverted .gitignore change --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: Tig <tig@users.noreply.github.com> Co-authored-by: tig <585482+tig@users.noreply.github.com> Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Terminal.Gui v2
The premier toolkit for building rich console apps for Windows, the Mac, and Linux/Unix.
⚠️ Note:
v1is in maintenance mode and we will only accept PRs for issues impacting existing functionality.
⚠️ Note:
Developers starting new TUI projects are encouraged to targetv2 Alpha. The API is significantly changed, and significantly improved. There will be breaking changes in the API before Beta, but the core API is stable.
Quick Start
Paste these commands into your favorite terminal on Windows, Mac, or Linux. This will install the Terminal.Gui.Templates, create a new "Hello World" TUI app, and run it.
(Press CTRL-Q to exit the app)
dotnet new --install Terminal.Gui.templates
dotnet new tui -n myproj
cd myproj
dotnet run
To run the UICatalog demo app that shows all the controls and features of the toolkit, use the following command:
dotnet run --project Examples/UICatalog/UICatalog.csproj
There is also a visual designer (uses Terminal.Gui itself).
Documentation
The full developer documentation for Terminal.Gui is available at gui-cs.github.io/Terminal.Gui.
Getting Started
- Getting Started - Quick start guide to create your first Terminal.Gui application
- Migrating from v1 to v2 - Complete guide for upgrading existing applications
- What's New in v2 - Overview of new features and improvements
API Reference
For detailed API documentation, see the API Reference.
Installing
Use NuGet to install the Terminal.Gui NuGet package:
v2 Alpha
(Infrequently updated, but stable enough for production use)
dotnet add package Terminal.Gui --version "2.0.0-alpha.*"
v2 Develop
(Frequently updated, but may have breaking changes)
dotnet add package Terminal.Gui --version "2.0.0-develop.*"
Legacy v1
dotnet add package Terminal.Gui --version "1.*
Or, you can use the Terminal.Gui.Templates.
Contributing
See CONTRIBUTING.md.
Debates on architecture and design can be found in Issues tagged with design.
History
See gui-cs for how this project came to be.

