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Replace the in-process implementation of frames with the external frames client. When a client window is created and managed by Mutter, Mutter will determine whether it is a window that requires decorations and hint the creation of a frame for it by setting the _MUTTER_NEEDS_FRAME property on the client window. After the frames client created a window that has the _MUTTER_FRAME_FOR property, Mutter will proceed to reparent the client window on the frame window, and show them as a single unit. Rendering and event handling on the frame window will be performed by the external client, Mutter is still responsible for everything else, namely resizing client and frame window in synchronization, and managing updates on the MetaWindowActor. In order to let the frame be managed by the external client, Mutter needs to change the way some properties are forwarded to the client and/or frame windows. Some properties are necessary to keep propagating to the client window only, some others need to happen on the frame window now, and some others needs to be propagated on both so they are synchronized about the behavior. Also, some events that were previously totally unexpected in frame windows are now susceptible to happen, so must be allowed now. MetaFrame in src/core/frame.c now acts as the wrapper of foreign windows created by the frames client, from the Mutter side. Location, size, and lifetime are still largely in control of Mutter, some details like visible/invisible borders are obtained from the client instead (through the _MUTTER_FRAME_EXTENTS and _GTK_FRAME_EXTENTS properties, respectively). Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2175> |
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| .gitlab/issue_templates | ||
| .gitlab-ci | ||
| clutter | ||
| cogl | ||
| data | ||
| doc | ||
| meson | ||
| po | ||
| src | ||
| subprojects | ||
| tools | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| check-style.py | ||
| config.h.meson | ||
| COPYING | ||
| HACKING.md | ||
| meson_options.txt | ||
| meson.build | ||
| mutter.doap | ||
| NEWS | ||
| README.md | ||
Mutter
Mutter is a Wayland display server and X11 window manager and compositor library.
When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.
When used on top of Xorg it acts as a X11 window manager and compositing manager.
It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.
Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork of Clutter, a scene graph and user interface toolkit.
Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and by Gala, elementary OS's window manager. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.
Contributing
To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.
It can be useful to look at the documentation available at the Wiki.
The API documentation is available at:
- Meta: https://gnome.pages.gitlab.gnome.org/mutter/meta/
- Clutter: https://gnome.pages.gitlab.gnome.org/mutter/clutter/
- Cally: https://gnome.pages.gitlab.gnome.org/mutter/cally/
- Cogl: https://gnome.pages.gitlab.gnome.org/mutter/cogl/
- CoglPango: https://gnome.pages.gitlab.gnome.org/mutter/cogl-pango/
Coding style and conventions
See HACKING.md.
Git messages
Commit messages should follow the GNOME commit message
guidelines. We require an URL
to either an issue or a merge request in each commit. Try to always prefix
commit subjects with a relevant topic, such as compositor: or
clutter/actor:, and it's always better to write too much in the commit
message body than too little.
Default branch
The default development branch is main. If you still have a local
checkout under the old name, use:
git checkout master
git branch -m master main
git fetch
git branch --unset-upstream
git branch -u origin/main
git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.