~ruther/dwl

ad30ca910b9da45835523af5c24ac353b7d13e9f — A Frederick Christensen 1 year, 2 months ago 452a314 
Documentation restructuring

Modified documentation to make clear the change in development (main) branch versus releases.
patch browse .tar.gz 
1 files changed, 107 insertions(+), 93 deletions(-)

M README.md

M README.md => README.md +107 -93
@@ 5,77 5,49 @@ Or on our [Discord server].

dwl is a compact, hackable compositor for [Wayland] based on [wlroots]. It is
intended to fill the same space in the Wayland world that dwm does in X11,
primarily in terms of functionality, and secondarily in terms of philosophy.
Like dwm, dwl is:
primarily in terms of functionality, and secondarily in terms of
philosophy. Like dwm, dwl is:

- Easy to understand, hack on, and extend with patches
- One C source file (or a very small number) configurable via `config.h`
- Tied to as few external dependencies as possible

dwl is not meant to provide every feature under the sun. Instead, like dwm, it
sticks to features which are necessary, simple, and straightforward to implement
given the base on which it is built. Implemented default features are:

- Any features provided by dwm/Xlib: simple window borders, tags, keybindings,
  client rules, mouse move/resize. Providing a built-in status bar is an
  exception to this goal, to avoid dependencies on font rendering and/or
  drawing libraries when an external bar could work well.
- Configurable multi-monitor layout support, including position and rotation
- Configurable HiDPI/multi-DPI support
- Idle-inhibit protocol which lets applications such as mpv disable idle
  monitoring
- Provide information to external status bars via stdout/stdin
- Urgency hints via xdg-activate protocol
- Support screen lockers via ext-session-lock-v1 protocol
- Various Wayland protocols
- XWayland support as provided by wlroots (can be enabled in `config.mk`)
- Zero flickering - Wayland users naturally expect that "every frame is perfect"
- Layer shell popups (used by Waybar)
- Damage tracking provided by scenegraph API

Given the Wayland architecture, dwl has to implement features from dwm **and**
the xorg-server. Because of this, it is impossible to maintain the original
project goal of 2000 SLOC and have a reasonably complete compositor with
features comparable to dwm. However, this does not mean that the code will grow
indiscriminately. We will try to keep the code as small as possible.

Features under consideration (possibly as patches) are:

- Protocols made trivial by wlroots
- Implement the text-input and input-method protocols to support IME once ibus
  implements input-method v2 (see https://github.com/ibus/ibus/pull/2256 and
  https://codeberg.org/dwl/dwl/pulls/235)

Feature *non-goals* for the main codebase include:

- Client-side decoration (any more than is necessary to tell the clients not to)
- Client-initiated window management, such as move, resize, and close, which can
  be done through the compositor
- Animations and visual effects

## Building dwl

## Getting Started:

### Latest semi-stable [release]
This is probably where you want to start. This builds against the dependent
packages' versions currently shipping in major distributions. If your
distribution's wlroots version is older, use an earlier dwl [release] or [0.x
branch].

### Development branch [main]
Active development progresses on the `main` branch. The `main` branch is built
against a late (and often changing) git commit of wlroots. While the adventurous
are welcome to use `main`, it is a rocky road. Using `main` requires that the
user be willing to chase git commits of wlroots. Testing development pull
requests may involve merging unmerged pull requests in [wlroots]' git repository
and/or git commits of wayland.
  
### Building dwl
dwl has the following dependencies:
```
libinput
wayland
wlroots (compiled with the libinput backend)
xkbcommon
wayland-protocols (compile-time only)
pkg-config (compile-time only)
```
If you enable X11 support:
```
libxcb
libxcb-wm
wlroots (compiled with X11 support)
Xwayland (runtime only)
```

Simply install these (and their `-devel` versions if your distro has separate
development packages) and run `make`. You need to use the Git version of
wlroots to build the `main` branch. If you wish to build against a released
version of wlroots, use a release or a [0.x branch].
- libinput
- wayland
- wlroots (compiled with the libinput backend)
- xkbcommon
- wayland-protocols (compile-time only)
- pkg-config (compile-time only)

dwl has the following additional dependencies if XWayland support is enabled:
- libxcb
- libxcb-wm
- wlroots (compiled with X11 support)
- Xwayland (runtime only)

Install these (and their `-devel` versions if your distro has separate
development packages) and run `make`. If you wish to build against a released
version of wlroots (*you probably do*), use a [release] or a [0.x branch]. If
you want to use the unstable development `main` branch, you need to use the git
version of [wlroots].

To enable XWayland, you should uncomment its flags in `config.mk`.



@@ 86,24 58,24 @@ manner as dwm. There is no way to separately restart the window manager in
Wayland without restarting the entire display server, so any changes will take
effect the next time dwl is executed.

As in the dwm community, we encourage users to share patches they have created.
Check out the dwl [patches repository]!
As in the dwm community, we encourage users to share patches they have
created. Check out the [dwl-patches] repository!

## Running dwl

dwl can be run on any of the backends supported by wlroots. This means you can
run it as a separate window inside either an X11 or Wayland session, as well
as directly from a VT console. Depending on your distro's setup, you may need
to add your user to the `video` and `input` groups before you can run dwl on
a VT. If you are using `elogind` or `systemd-logind` you need to install
polkit; otherwise you need to add yourself in the `seat` group and
enable/start the seatd daemon.
run it as a separate window inside either an X11 or Wayland session, as well as
directly from a VT console. Depending on your distro's setup, you may need to
add your user to the `video` and `input` groups before you can run dwl on a
VT. If you are using `elogind` or `systemd-logind` you need to install polkit;
otherwise you need to add yourself in the `seat` group and enable/start the
seatd daemon.

When dwl is run with no arguments, it will launch the server and begin handling
any shortcuts configured in `config.h`. There is no status bar or other
decoration initially; these are instead clients that can be run within
the Wayland session.
Do note that the background color is black.
decoration initially; these are instead clients that can be run within the
Wayland session. Do note that the default background color is black. This can be
modified in `config.h`.

If you would like to run a script or command automatically at startup, you can
specify the command using the `-s` option. This command will be executed as a


@@ 111,7 83,8 @@ shell command using `/bin/sh -c`.  It serves a similar function to `.xinitrc`,
but differs in that the display server will not shut down when this process
terminates. Instead, dwl will send this process a SIGTERM at shutdown and wait
for it to terminate (if it hasn't already). This makes it ideal for execing into
a user service manager like [s6], [anopa], [runit], [dinit], or [`systemd --user`].
a user service manager like [s6], [anopa], [runit], [dinit], or [`systemd
--user`].

Note: The `-s` command is run as a *child process* of dwl, which means that it
does not have the ability to affect the environment of dwl or of any processes


@@ 130,10 103,10 @@ automatically, you will need to configure it prior to launching `dwl`, e.g.:
Information about selected layouts, current window title, app-id, and
selected/occupied/urgent tags is written to the stdin of the `-s` command (see
the `printstatus()` function for details).  This information can be used to
populate an external status bar with a script that parses the information.
Failing to read this information will cause dwl to block, so if you do want to
run a startup command that does not consume the status information, you can
close standard input with the `<&-` shell redirection, for example:
populate an external status bar with a script that parses the
information. Failing to read this information will cause dwl to block, so if you
do want to run a startup command that does not consume the status information,
you can close standard input with the `<&-` shell redirection, for example:

    dwl -s 'foot --server <&-'



@@ 148,6 121,49 @@ To get a list of status bars that work with dwl consult our [wiki].

You can find a [list of useful resources on our wiki].

## Background

dwl is not meant to provide every feature under the sun. Instead, like dwm, it
sticks to features which are necessary, simple, and straightforward to implement
given the base on which it is built. Implemented default features are:

- Any features provided by dwm/Xlib: simple window borders, tags, keybindings,
  client rules, mouse move/resize. Providing a built-in status bar is an
  exception to this goal, to avoid dependencies on font rendering and/or drawing
  libraries when an external bar could work well.
- Configurable multi-monitor layout support, including position and rotation
- Configurable HiDPI/multi-DPI support
- Idle-inhibit protocol which lets applications such as mpv disable idle
  monitoring
- Provide information to external status bars via stdout/stdin
- Urgency hints via xdg-activate protocol
- Support screen lockers via ext-session-lock-v1 protocol
- Various Wayland protocols
- XWayland support as provided by wlroots (can be enabled in `config.mk`)
- Zero flickering - Wayland users naturally expect that "every frame is perfect"
- Layer shell popups (used by Waybar)
- Damage tracking provided by scenegraph API

Given the Wayland architecture, dwl has to implement features from dwm **and**
the xorg-server. Because of this, it is impossible to maintain the original
project goal of 2000 SLOC and have a reasonably complete compositor with
features comparable to dwm. However, this does not mean that the code will grow
indiscriminately. We will try to keep the code as small as possible.

Features under consideration (possibly as patches) are:

- Protocols made trivial by wlroots
- Implement the text-input and input-method protocols to support IME once ibus
  implements input-method v2 (see https://github.com/ibus/ibus/pull/2256 and
  https://codeberg.org/dwl/dwl/pulls/235)

Feature *non-goals* for the main codebase include:

- Client-side decoration (any more than is necessary to tell the clients not to)
- Client-initiated window management, such as move, resize, and close, which can
  be done through the compositor
- Animations and visual effects

## Acknowledgements

dwl began by extending the TinyWL example provided (CC0) by the sway/wlroots


@@ 165,17 181,15 @@ inspiration, and to the various contributors to the project, including:
- Stivvo for output management and fullscreen support, and patch maintenance


[Discord server]: https://discord.gg/jJxZnrGPWN
[#dwl on Libera Chat]: https://web.libera.chat/?channels=#dwl
[Wayland]: https://wayland.freedesktop.org/
[wlroots]: https://gitlab.freedesktop.org/wlroots/wlroots/
[0.x branch]: https://codeberg.org/dwl/dwl/branches
[patches repository]: https://codeberg.org/dwl/dwl-patches
[s6]: https://skarnet.org/software/s6/
[`systemd --user`]: https://wiki.archlinux.org/title/Systemd/User [#dwl on Libera Chat]: https://web.libera.chat/?channels=#dwl
[0.7-rc1]: https://codeberg.org/dwl/dwl/releases/tag/v0.7-rc1 [0.x branch]: https://codeberg.org/dwl/dwl/branches
[anopa]: https://jjacky.com/anopa/
[runit]: http://smarden.org/runit/faq.html#userservices
[dinit]: https://davmac.org/projects/dinit/
[`systemd --user`]: https://wiki.archlinux.org/title/Systemd/User
[wiki]: https://codeberg.org/dwl/dwl/wiki/Home#compatible-status-bars
[list of useful resources on our wiki]:
    https://codeberg.org/dwl/dwl/wiki/Home#migrating-from-x
[dwl-patches]: https://codeberg.org/dwl/dwl-patches [list of useful resources on our wiki]: https://codeberg.org/dwl/dwl/wiki/Home#migrating-from-x
[main]: https://codeberg.org/dwl/dwl/src/branch/main
[release]: https://codeberg.org/dwl/dwl/releases
[runit]: http://smarden.org/runit/faq.html#userservices
[s6]: https://skarnet.org/software/s6/
[wlroots]: https://gitlab.freedesktop.org/wlroots/wlroots/
[wiki]: https://codeberg.org/dwl/dwl/wiki/Home#compatible-status-bars [Discord server]: https://discord.gg/jJxZnrGPWN
[Wayland]: https://wayland.freedesktop.org/