58290cca57
meta_window_handle_ungrabbed_event() triggers the show of the window menu in gnome-shell via meta_window_show_menu() on hold of Meta + right mouse button click. Since meta_display_handle_event() was refactored lately and now forwards a lot more events to Clutter (including the one triggering the window menu), gnome-shell now sees this event after the menu has opened, figures that the source-actor is outside of the menu, and immediately closes the menu again. This is the correct behavior from the PopupMenuManager on the gnome-shell side, it is the responsibility of the event handler that opens the menu (aka meta_window_handle_ungrabbed_event()) to return CLUTTER_EVENT_STOP and stop event propagation. So fix this issue by adding a return value to meta_window_handle_ungrabbed_event() and stopping event propagation in case the event opened the window menu. While at it, also return CLUTTER_EVENT_STOP for events triggering window drags, so we can drop the extra check for that in meta_display_handle_event(). Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3623>
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.