92375c75f8
This is inspired by 98892391d764d1cf where the usage of `g_signal_handler_disconnect()` without resetting the corresponding handler id later resulted in a bug. Using `g_clear_signal_handler()` makes sure we avoid similar bugs and is almost always the better alternative. We use it for new code, let's clean up the old code to also use it. A further benefit is that it can get called even if the passed id is 0, allowing us to remove a lot of now unnessecary checks, and the fact that `g_clear_signal_handler()` checks for the right type size, forcing us to clean up all places where we used `guint` instead of `gulong`. No functional changes intended here and all changes should be trivial, thus bundled in one big commit. https://gitlab.gnome.org/GNOME/mutter/merge_requests/940
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.