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Robert Mader 72692b1144 clutter-box-layout: Use floats and assert on denormal numbers 
`distribute_natural_allocation` expects an input >= 0 of type `gint`. In
`get_preferred_size_for_opposite_orientation` it is used with an unchecked
variable `size` of type `gfloat`, which in case it is `Infinity`, gets
passed on in the macro `MAX (0, size)`. `Infinity` becomes `G_MININT`
when implicitly casted to `gint` in `distribute_natural_allocation`,
triggering the assertion `extra_space >= 0`.

The resulting warning in the log is counter intuitive and not very
helpful.

Use `float` in `distribute_natural_allocation` instead of `gint` and
assert on denormal values so we can more easily identify bugs.

Additionally change some types while at it and add a even more
expressive warning referencing the actor at one point.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/375
2019-01-28 18:36:05 +01:00
.gitlab-ci cogl/path: Don't depend on GL/glu.h 2019-01-22 19:06:14 +01:00
clutter clutter-box-layout: Use floats and assert on denormal numbers 2019-01-28 18:36:05 +01:00
cogl cogl: Fix builds with G_DISABLE_ASSERT 2019-01-25 00:48:12 +01:00
data Drop Autotools 2019-01-10 11:50:54 -02:00
doc Remove obsolete .cvsignore files 2019-01-10 11:50:54 -02:00
po Remove po/ChangeLog 2019-01-12 14:53:13 +01:00
src wayland: Implement window activation and focus stealing prevention 2019-01-26 18:07:03 +01:00
tools tools: Remove obsolete ppa-magic.py 2018-11-30 11:12:12 +08:00
.gitignore project: Update gitignore 2019-01-10 11:50:54 -02:00
.gitlab-ci.yml gitlab-ci.yml: Change build step build type to debugoptimized 2019-01-23 21:05:51 +00:00
config.h.meson build: Make libcanberra no longer optional 2019-01-08 15:58:11 +01:00
COPYING Updated obsolete FSF postal address in COPYING 2014-01-12 08:44:30 +07:00
meson_options.txt build: Make libcanberra no longer optional 2019-01-08 15:58:11 +01:00
meson.build meson: Hide symbols by default in clutter 2019-01-23 13:03:40 +00:00
mutter.doap Replace Bugzilla by Gitlab URL in DOAP file 2018-12-15 23:50:01 +01:00
NEWS Bump version to 3.31.4 2019-01-10 20:07:55 +01:00
README.md README: Mention usage by Gala 2018-11-08 17:11:27 +01:00

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 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.

License

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