Monomer

A cross-platform GUI library for Haskell

An easy to use, cross platform, GUI library for writing native Haskell applications.

Monomer provides a framework similar to the Elm Architecture, allowing the creation of GUIs using an extensible set of widgets with pure Haskell.

Objectives

• Be easy to learn and use.
• Be extensible with custom widgets.
• Run on Windows, Linux and macOS.
• Have good documentation.
• Have good examples.

These are not objectives for this project

• Have a native look and feel.

Why would you want to use this library?

• You want to write your application in Haskell.
• You want to write a native, not web based, application.

Documentation

Setup

You can read how to setup your environment here.

Tutorials

Introductory tutorials are available:

• 01 - Basics
• 02 - Styling
• 03 - Life cycle
• 04 - Tasks
• 05 - Producers
• 06 - Composite
• 07 - Custom widgets
• 08 - Themes

Examples

Beyond the tutorials, a few real world like examples are available:

• Todo
• Books
• Ticker
• Generative
• Custom OpenGL

Haddock

You can read the source code's documentation here.

Design decisions

In case you wonder why some choices were made, you can read here.

Roadmap

• Stability and performance.
• Mobile support.

Project status

Although there has not been a lot of activity in the past year, the project is still active.

I may take some time to respond to issues while I work on features I want to add to Monomer.

Useful extensions

• Hagrid, a flexible datagrid widget.

Contributing

PRs are welcome!

If possible, keep them small and focused. If you are planning on making a large change, please submit an issue first so we can agree on a solution.

License

This library is licensed under the BSD-3 license.

Fonts used in the examples:

• Roboto, licensed under the Apache license.
• Remix Icon, licensed under the Apache license.

Acknowledgments

• Thanks to Ghislaine Guerin for UX advice.
• Thanks to Mikko Mononen for the amazing nanovg library.