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An idiomatic GUI library inspired by Elm and based on gtk4-rs. Relm4 is a new version of relm that's built from scratch and is compatible with GTK4 and libadwaita.
Why Relm4
We believe that GUI development should be easy, productive and delightful.
The gtk4-rs crate already provides everything you need to write modern, beautiful and cross-platform applications.
Built on top of this foundation, Relm4 makes developing more idiomatic, simpler and faster and enables you to become productive in just a few hours.
Our goals
- ⏱️ Productivity
- ✨ Simplicity
- 📎 Outstanding documentation
- 🔧 Maintainability
Documentation
Dependencies
Relm4 depends on GTK4: How to install GTK4.
Ecosystem
- relm4-macros several macros for declarative UI definitions.
- relm4-components is a collections of reusable components you can easily integrate into your application.
- relm4-template is a starter template for creating Relm4 applications in the Flatpak package format.
To use all features, just add this to your Cargo.toml
:
= "0.5.0-beta.4"
= "0.5.0-beta.4"
Features
The relm4
crate has four feature flags:
Flag | Purpose |
---|---|
macros | Enable macros by re-exporting relm4-macros |
libadwaita | Improved support for libadwaita |
libpanel | Improved support for libpanel |
dox | Linking to the underlying C libraries is skipped to allow building the docs without the dependencies |
The macros
feature is a default feature.
Examples
Several example applications are available at examples/.
📸 Screenshots from the example apps
A simple counter app
use *;
use *;
Projects using Relm4
- fm — A small, general-purpose file manager.
- Done - A simple and versatile to do app.
- Reovim - GUI frontend for neovim.
- NixOS Configuration Editor - A graphical configuration editor for NixOS.
License
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Feedback and contributions are highly appreciated!