komorebi

Tiling Window Management for Windows.

komorebi is a tiling window manager that works as an extension to Microsoft's
Desktop Window
Manager in
Windows 10 and above.

komorebi allows you to control application windows, virtual workspaces and display monitors with a CLI which can be
used with third-party software such as whkd
and AutoHotKey to set user-defined keyboard shortcuts.

komorebi aims to make as few modifications as possible to the operating
system and desktop environment by default. Users are free to make such
modifications in their own configuration files for komorebi, but these will
remain opt-in and off-by-default for the foreseeable future.

Please refer to the documentation for instructions on how
to install and
configure
komorebi, common workflows, a complete
configuration schema reference and a
complete CLI reference.

There is a Discord server available for
komorebi-related discussion, help, troubleshooting etc. If you have any
specific feature requests or bugs to report, please create an issue in this
repository.

There is a YouTube
channel where I post
komorebi development videos. If you would like to be notified of upcoming
videos please subscribe and turn on notifications.

There is an Awesome List which
showcases the many awesome projects that exist in the komorebi ecosystem.

komorebi is a free and source-available project, and one that encourages you to
make charitable donations if you find the software to be useful and have the
financial means.

I encourage you to make a charitable donation to the Palestine Children's
Relief Fund or contributing
to a Gaza Funds campaign before you consider sponsoring
me on GitHub.

GitHub Sponsors is enabled for this
project. Unfortunately I don't have
anything specific to offer besides my gratitude and shout outs at the end of
komorebi live development videos and tutorials.

If you would like to tip or sponsor the project but are unable to use GitHub
Sponsors, you may also sponsor through Ko-fi.

Installation

A detailed installation and quickstart
guide is available which shows how to get started
using scoop, winget or building from source.

Comparison With Fancy Zones

Community member Olge has created an
excellent video which compares the default window management features of
Windows 11, Fancy Zones and komorebi.

If you are not familiar with tiling window managers or if you are looking at
komorebi and wondering "how is this different from Fancy Zones? 🤔", this short
video will answer the majority of your questions.

Contribution Guidelines

If you would like to contribute to komorebi please take the time to carefully read the guidelines below.

Commit hygiene

• Flatten all use statements
• Run cargo +stable clippy and ensure that all lints and suggestions have been addressed before committing
• Run cargo +nightly fmt --all to ensure consistent formatting before committing
• Use git cz with
  the Commitizen CLI to prepare
  commit messages
• Provide at least one short sentence or paragraph in your commit message body to describe your thought process for the
  changes being committed

PRs should contain only a single feature or bug fix

It is very difficult to review pull requests which touch multiple unrelated features and parts of the codebase.

Please do not submit pull requests like this; you will be asked to separate them into smaller PRs that deal only with
one feature or bug fix at a time.

If you are working on multiple features and bug fixes, I suggest that you cut a branch called local-trunk
from master which you keep up to date, and rebase the various independent branches you are working on onto that branch
if you want to test them together or create a build with everything integrated.

Refactors to the codebase must have prior approval

komorebi is a mature codebase with an internal consistency and structure that has developed organically over close to
half a decade.

There are countless hours of live coding videos demonstrating work on this project and
showing new contributors how to do everything from basic tasks like implementing new komorebic commands to
distinguishing monitors by manufacturer hardware identifiers and video card ports.

Refactors to the structure of the codebase are not taken lightly and require prior discussion and approval.

Please do not start refactoring the codebase with the expectation of having your changes integrated until you receive an
explicit approval or a request to do so.

Similarly, when implementing features and bug fixes, please stick to the structure of the codebase as much as possible
and do not take this as an opportunity to do some "refactoring along the way".

It is extremely difficult to review PRs for features and bug fixes if they are lost in sweeping changes to the structure
of the codebase.

Breaking changes to user-facing interfaces are unacceptable

This includes but is not limited to:

• All komorebic commands
• The komorebi.json schema
• The komorebi-application-specific-configuration
  schema

No user should ever find that their configuration file has stopped working after upgrading to a new version
of komorebi.

More often than not there are ways to reformulate changes that may initially seem like they require breaking user-facing
interfaces into additive changes.

For some inspiration please take a look
at this commit which added the
ability for users to specify colours in komorebi.json in Hex format alongside RGB.

There is also a process in place for graceful, non-breaking, deprecation of configuration options that are no longer
required.

License

komorebi is licensed under the Komorebi 1.0.0 license, which
is a fork of the PolyForm Strict 1.0.0
license. On a high level
this means that you are free to do whatever you want with komorebi for
personal use other than redistribution, or distribution of new works (ie.
hard-forks) based on the software.

Anyone is free to make their own fork of komorebi with changes intended
either for personal use or for integration back upstream via pull requests.

The Komorebi 1.0.0 License does not permit any kind of
commercial use.

A dedicated license and EULA will be introduced in 2025 for both commercial and
noncommercial organizations.

Please see CONTRIBUTING.md for more information about how
code contributions to komorebi are licensed.

Development

If you use IntelliJ, you should enable the following settings to ensure that code generated by macros is recognised by
the IDE for completions and navigation:

• Set Expand declarative macros
  to Use new engine under "Settings > Langauges & Frameworks > Rust"
• Enable the following experimental features:
  • org.rust.cargo.evaluate.build.scripts
  • org.rust.macros.proc

Logs and Debugging

Logs from komorebi will be appended to %LOCALAPPDATA%/komorebi/komorebi.log; this file is never rotated or overwritten, so it will keep
growing until it is deleted by the user.

Whenever running the komorebic stop command or sending a Ctrl-C signal to komorebi directly, the komorebi process
ensures that all hidden windows are restored before termination.

If however, you ever end up with windows that are hidden and cannot be restored, a list of window handles known
to komorebi are stored and continuously updated in %LOCALAPPDATA%/komorebi//komorebi.hwnd.json.

Restoring Windows

Running komorebic restore-windows will read the list of window handles and forcibly restore them, regardless of
whether the main komorebi process is running.

Panics and Deadlocks

If komorebi ever stops responding, it is most likely either due to either a panic or a deadlock. In the case of a
panic, this will be reported in the log. In the case of a deadlock, there will not be any errors in the log, but the
process and the log will appear frozen.

If you believe you have encountered a deadlock, you can compile komorebi with --features deadlock_detection and try
reproducing the deadlock again. This will check for deadlocks every 5 seconds in the background, and if a deadlock is
found, information about it will appear in the log which can be shared when opening an issue.

Window Manager State and Integrations

The current state of the window manager can be queried using the komorebic state command, which returns a JSON
representation of the State struct.

This may also be polled to build further integrations and widgets on top of.

Window Manager Event Subscriptions

Named Pipes

It is possible to subscribe to notifications of every WindowManagerEvent and SocketMessage handled
by komorebi using Named Pipes.

First, your application must create a named pipe. Once the named pipe has been created, run the following command:

Note that you do not have to include the full path of the named pipe, just the name.

If the named pipe exists, komorebi will start pushing JSON data of successfully handled events and messages:

You may then filter on the type key to listen to the events that you are interested in. For a full list of possible
notification types, refer to the enum variants of WindowManagerEvent in komorebi and SocketMessage
in komorebi::core.

Below is an example of how you can subscribe to and filter on events using a named pipe in nodejs.

Unix Domain Sockets

It is possible to subscribe to notifications of every WindowManagerEvent and SocketMessage handled
by komorebi using Unix Domain Sockets.

UDS are also the only mode of communication between komorebi and komorebic.

First, your application must create a socket in $ENV:LocalAppData\komorebi. Once the socket has been created, run the
following command:

If the socket exists, komorebi will start pushing JSON data of successfully handled events and messages as in the
example above in the Named Pipes section.

Rust Client

As of v0.1.22 it is possible to use the komorebi-client crate to subscribe to notifications of
every WindowManagerEvent and SocketMessage handled by komorebi in a Rust codebase.

Below is a simple example of how to use komorebi-client in a basic Rust application.

A read-world example can be found
in komokana.

Subscription Event Notification Schema

A JSON Schema of the event notifications emitted to subscribers can be generated with
the komorebic notification-schema command. The output of this command can be redirected to the clipboard or a file,
which can be used with services such as Quicktype to generate type definitions in different
programming languages.

Communication over TCP

A TCP listener can optionally be exposed on a port of your choosing with the --tcp-port=N flag. If this flag is not
provided to komorebi or komorebic start, no TCP listener will be created.

Once created, your client may send
any SocketMessage to komorebi in the
same way that komorebic would.

This can be used if you would like to create your own alternative to komorebic which incorporates scripting and
various middleware layers, and similarly it can be used if you would like to integrate komorebi with
a custom input handler.

If a client sends an unrecognized message, it will be disconnected and have to reconnect before trying to communicate
again.

Socket Message Schema

A JSON Schema of socket messages used to send instructions to komorebi can be generated
with the komorebic socket-schema command. The output of this command can be redirected to the clipboard or a file,
which can be used with services such as Quicktype to generate type definitions in different
programming languages.

Appreciations

• First and foremost, thank you to my wife, both for naming this project and for her patience throughout its never-ending development

• Thank you to @sitiom for being an exemplary open source community leader

• Thank you to the developers of nog who came before me and whose work taught me more than I can ever hope to repay

• Thank you to the developers of GlazeWM for pushing the boundaries of tiling window management on Windows with me and having an excellent spirit of collaboration

• Thank you to @Ciantic for helping me bring the hidden Virtual Desktops cloaking function to komorebi