2a584a8f01
Enable grabbing input for popups, and drag-and-drop. Since the very switch to using ClutterGrab underneath Wayland grabs will challenge assumptions in existing code, these had to change in one go. A notable one is that meta_display_windows_are_interactable() is not 100% true anymore for xdg_popups, at least not the same. Another change happening in lockstep is MetaDnD no longer having to funnel events to Wayland, since the grab triggered by Wayland DnD is now a cause of "compositor grabs", and will naturally receive events as long as it hold. while "modal". A number of ad-hoc checks for grabbing state has also been dropped from src/wayland/ internals, since again Wayland grabs are a reason for Clutter grabs, plus the mechanism itself will already take care of focus loss and restoration. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3420>
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 first look at the GNOME Handbook and the documentation and API references below first.
Documentation
- Coding style and conventions
- Git conventions
- Code overview
- Building and Running
- Debugging
- Monitor configuration
API Reference
- Meta: https://mutter.gnome.org/meta/
- Clutter: https://mutter.gnome.org/clutter/
- Cally: https://mutter.gnome.org/cally/
- Cogl: https://mutter.gnome.org/cogl/
- CoglPango: https://mutter.gnome.org/cogl-pango/
- Mtk: https://mutter.gnome.org/mtk/
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.