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Daniel van Vugt e781e1fdba iconGrid: Create icon clones in a separate loop 
For reasons not yet fully understood, `Main.uiGroup.add_actor` takes around
10 milliseconds to complete.

Because of this, each `actor.opacity = 0` has a good chance of falling
on a different frame. And when it does, `_opacityChangedId` also lands
on multiple different frames each incurring a separate relayout cycle.
It is this excessive number of relayouts that causes stuttering in the
icon grid animation (#2065). But it is the slowness of `uiGroup.add_actor`
that causes the number to be excessive when it should be one.

By creating the clones and adding them to `uiGroup` early, we then enable
the existing loop starting the animation to complete within a single frame.
And by completing within a single frame all the opacity changes land within
the same frame interval, thus incurring only a single relayout instead of
many.

This issue went unnoticed until 004a5e1042 (!704), after which the slow
emissions of `notify::opacity` became a more visible performance problem.

Closes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/2065

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/1002
2020-02-19 15:39:21 +00:00
.gitlab/issue_templates gitlab: Add issue templates 2020-01-07 22:42:46 +00:00
.gitlab-ci lint: Convert eslint JSON to YAML 2019-11-11 23:51:17 +00:00
.settings Clean out some eclipse artefacts 2019-02-13 04:39:26 +01:00
data theme: Fix workspace switcher popup box size 2020-02-19 14:07:36 +00:00
docs/reference docs: Fix interface prefix for D-Bus docs 2019-07-25 15:56:20 +02:00
js iconGrid: Create icon clones in a separate loop 2020-02-19 15:39:21 +00:00
lint lint: Disable eqeqeq in legacy configuration 2019-11-11 23:51:17 +00:00
man man: Update project website 2018-01-07 21:39:18 +01:00
meson extensionPrefs: Add application icon 2020-02-03 19:03:19 +01:00
po Update Chinese (Taiwan) translation 2020-02-19 06:37:20 +00:00
src blur-effect: Remove modify_paint_volume vfunc override 2020-02-12 11:11:02 -03:00
subprojects extensions-tool: Add option to list updates 2020-02-10 22:43:00 +00:00
test Add convert_xml test 2019-03-04 20:55:15 +00:00
tests Use paint and pick context to get framebuffer 2019-12-03 19:07:15 +00:00
tools build: Remove Canberra dependency 2019-01-09 23:09:18 +00:00
.eslintrc.yml lint: Convert eslint JSON to YAML 2019-11-11 23:51:17 +00:00
.gitignore theme: use the fontsize function consistently 2020-01-09 16:43:26 +01:00
.gitlab-ci.yml ci: Run tests through dbus-run-session 2019-10-30 19:43:53 +01:00
.gitmodules submodules: Replace non-functional git.gnome.org URL by GNOME Gitlab URL 2018-09-25 08:41:30 +02:00
cldr2json.py Fix override for fr-CA 2019-03-04 20:55:15 +00:00
config.h.meson Add check_cloexec_fds debug command 2018-07-30 23:11:41 +00:00
COPYING Changed obsolete FSF postal address. 2014-01-08 04:35:14 +07:00
gnome-shell.doap doap: Add Georges Stavracas as a maintainer 2019-12-18 15:24:38 -03:00
HACKING.md docs: Conform to coding style in HACKING guide 2020-01-06 19:53:21 +01:00
meson_options.txt extensions-tool: Start import 2019-08-21 18:28:02 +02:00
meson.build Bump version to 3.35.91 2020-02-18 00:14:32 +01:00
NEWS Bump version to 3.35.91 2020-02-18 00:14:32 +01:00
README.md README.md: Add contribution section 2019-02-13 20:37:39 +01:00
README.mdwn Add basic documentation 2019-03-04 20:55:15 +00:00

README.md

GNOME Shell

GNOME Shell provides core user interface functions for the GNOME 3 desktop, like switching to windows and launching applications. GNOME Shell takes advantage of the capabilities of modern graphics hardware and introduces innovative user interface concepts to provide a visually attractive and easy to use experience.

For more information about GNOME Shell, including instructions on how to build GNOME Shell from source and how to get involved with the project, see the project wiki.

Bugs should be reported to the GNOME bug tracking system.

Contributing

To contribute, open merge requests at https://gitlab.gnome.org/GNOME/gnome-shell.

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

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