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Carlos Garnacho ab8e145e25 wayland: Filter scroll events based on source 
The POINTER_EMULATED flag was a convenience to filter either
side of smooth/discrete events that we should ignore based on
the source.

This distinction was challenged, first by v120 mice that use
Clutter smooth events to deliver semi-discrete changes, second
by commit e0c4b2b241 ("backends/native: Mark the emulated smooth
scroll event as such") which made the smooth events be flagged
as emulated, and the discrete whole-step events marked as
real.

This distinction feels convenient for the time being, since
upper layers might be confused by real smooth scroll events
without finish flags. Adapt to this change at MetaWaylandPointer
so that we drop the POINTER_EMULATED check, and the events are
perhaps filtered based on their source and the preferred
wl_seat version of the client that we are talking to.

This handles the whole grid of combinations:
- wheel sources with wl_seat >=8 result in wl_pointer.axis_value120
  from "emulated" smooth scroll events, with value120 information.
- wheel sources with wl_seat < 8 result in wl_pointer.axis_discrete
  from "real" discrete scroll events.
- finger/continuous sources prefer smooth events. Previously, always
  non-emulated for those.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3642>
2024-03-05 21:47:43 +00:00
.gitlab/issue_templates gitlab: Add missing < in markdown comment tag 2020-02-14 03:10:28 +00:00
.gitlab-ci ci: Look for matching ref in user remote for branch pipeline 2023-08-08 04:11:13 +02:00
clutter clutter: Pass scroll source to discrete events 2024-03-05 21:47:43 +00:00
cogl cogl: Increase annotation coverage 2024-02-27 14:45:29 +00:00
data monitor-manger: Expose the minimum refresh rate of monitors 2024-03-02 12:35:36 +00:00
doc clutter/frame-clock: Add a state for when scheduled "now" 2024-02-10 16:16:19 +00:00
meson build: Replace custom post-install script 2022-11-19 02:21:05 +01:00
mtk gir: Remove unnused cairo include 2024-01-27 10:03:15 +00:00
po Update Slovenian translation 2024-03-05 11:10:59 +00:00
src wayland: Filter scroll events based on source 2024-03-05 21:47:43 +00:00
subprojects docs: Prefer using gi-docgen from a subproject 2024-02-09 12:29:50 +00:00
tools tools: Remove no longer useful scripts 2024-01-27 09:54:15 +00:00
.gitignore misc: Add common noisy dirs to gitignore 2024-01-08 19:53:57 +01:00
.gitlab-ci.yml ci: Rebase image to F40 2024-02-25 21:46:36 +00:00
check-style.py ci: Mark the regex to find chunks in code style checks as regex string 2023-12-15 14:49:57 +00:00
config.h.meson build: One config file to rule them all 2023-11-15 12:00:19 +00:00
COPYING Updated obsolete FSF postal address in COPYING 2014-01-12 08:44:30 +07:00
logo.svg docs: Add a logo 2024-01-09 13:38:54 +00:00
meson_options.txt meson: Make libdisplay_info a feature option 2024-02-14 11:37:21 +00:00
meson.build build: Explicitly pass check kwarg to run_command() 2024-03-05 08:26:32 +00:00
mutter.doap DOAP: Remove defunct mailing list; add Discourse 2023-09-15 03:19:22 +02:00
NEWS Bump version to 46.rc 2024-03-03 15:02:00 +01:00
README.md misc: Use the new mutter.gnome.org URL 2024-01-12 10:48:20 +00:00

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 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

API Reference

License

Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.