b5f50028f2
For the most part, a MetaWindow is expected to live roughly as long as the associated wl_surface, give or take asynchronous API discrepancies. The exception to this rule is handling of reparenting when decorating or undecorating a window, when a MetaWindow on X11 is made to survive the unmap/map cycle. The fact that this didn't hold on Wayland caused various issues, such as a feedback loop where the X11 window kept being remapped. By making the MetaWindow lifetime for Xwayland windows being the same as they are on plain X11, we remove the different semantics here, which seem to lower the risk of hitting the race condition causing the feedback loop mentioned above. What this commit do is separate MetaWindow lifetime handling between native Wayland windows and Xwayland windows. Wayland windows are handled just as they were, i.e. unmanaged together as part of the wl_surface destruction; while during the Xwayland wl_surface destruction, the MetaWindow <-> MetaWaylandSurface association is simply broken. Related: https://gitlab.freedesktop.org/xorg/xserver/issues/740 Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/762 https://gitlab.gnome.org/GNOME/mutter/merge_requests/774 |
||
|---|---|---|
| .gitlab-ci | ||
| clutter | ||
| cogl | ||
| data | ||
| doc | ||
| meson | ||
| po | ||
| src | ||
| tools | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| config.h.meson | ||
| COPYING | ||
| 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 af 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.
The coding style used is primarily the GNU flavor of the GNOME coding
style
with some minor additions such as preferring stdint.h types over GLib
fundamental types, and a soft 80 character line limit. However, in general,
look at the file you're editing for inspiration.
Commit messages should follow the GNOME commit message guidelines. We require an URL to either an issue or a merge request in each commit.
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.