ec18a559c6
Many tablets have a native portrait mode panel, yet come with a keyboard dock, where the device gets docked in landscape mode. To avoid the display being on its side when mutter starts while the tablet is docked, we need to take the accelerometer reported orientation into account even if there is a tablet-mode-switch which indicates that the device is NOT in tablet-mode (because it is docked). Add special handling for the first time the "orientation-changed" signal gets signalled by the orientation-manager, which happens after it has successfully claimed the accelerometer with iio-sensor-proxy. The added special handling of the initial "orientation-changed" signal does a number of checks: 1. panel_orientation_managed is false because of the tablet-mode-switch and not because of other reasons. 2. The device has a native portrait mode panel (and thus likely needs rotation to display the image the right way up when docked). If all these checks succeed then it continues with creating a new monitors-config based on the orientation ignoring the panel_orientation_managed value (for the initial/first "orientation-changed" signal only). https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1506
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.