XLibre Xserver
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Enrico Weigelt, metux IT consult 57d523b7c7 (!1714) dix: add per-screen window position notify hook
Right now, extension specific actions on window positioning are implemented
by wrapping the ScreenRec's PositionWindow() proc pointer: the extensions are
storing the original pointer in their private data and putting in their own one.
On each call, their proc restores the original one, calls it, and switches back
again. When multiple extensions doing so, they're forming a kind of daisy chain.
(the same is done for lots of other procs)

While that approach is looking nice and elegant on the drawing board, it's
complicated, dangerous like a chainsaw and makes debugging hard, leading to
pretty blurred API borders.

This commit introduces a simple approach for letting extension hook into the
window positioning path safely, w/o having to care much about side effects
with the call chain. Extensions now can simply register their hook proc
(and an opaque pointer) and get called back - w/o ever having to mess with
the ScreenRec's internal structures. These hooks are called before the original
vector (usually handled by DDX/screen driver directly) is called.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2025-02-19 16:44:50 +01:00
.github .github: workflow for building Xservers and some drivers 2025-02-19 16:44:49 +01:00
.gitlab-ci ci: update XTS to a commit that doesn't require -fcommon workaround 2025-02-17 19:16:04 +00:00
Xext (!1714) xv: use window destructor hook 2025-02-19 16:44:50 +01:00
Xi misc.h: unexport compare_version() 2025-02-18 11:17:40 +00:00
composite (!1714) composite: use window destructor hook 2025-02-19 16:44:50 +01:00
config linux: Fix BUS_PLATFORM detection for non-PCI devices 2025-02-07 15:10:17 +00:00
damageext os: move out extension disable flags to corresponing extensions 2025-02-07 12:00:53 +01:00
dbe (!1714) dbe: use window destructor hook 2025-02-19 16:44:50 +01:00
dix (!1714) dix: add per-screen window position notify hook 2025-02-19 16:44:50 +01:00
doc misc.h: drop LengthRestB() macro 2025-02-17 19:25:14 +00:00
dri3 (!1714) xfree86: dri: use window destructor hook 2025-02-19 16:44:50 +01:00
exa exa: simplify CreatePixmap()/DestroyPixmap() handlers error pathes 2025-02-12 17:48:30 +01:00
fb (!1705) xwin: drop wrapping on ScreenRec->ModifyPixmapHeader() 2025-02-19 16:44:50 +01:00
glamor glamor: use explicit field initializers for XF86ModuleData 2025-02-17 19:41:29 +00:00
glx os: unexport ResetCurrentRequest() 2025-02-18 10:53:45 +00:00
hw (!1714) xwayland: use window destructor hook 2025-02-19 16:44:50 +01:00
include (!1714) dix: add per-screen window position notify hook 2025-02-19 16:44:50 +01:00
man Xserver.man: Note that -byteswappedclients is the default in this release 2024-03-23 10:27:03 -07:00
mi (!1714) dix: add per-screen window position notify hook 2025-02-19 16:44:50 +01:00
miext (!1714) rootless: use window destructor hook 2025-02-19 16:44:50 +01:00
os misc.h: unexport compare_version() 2025-02-18 11:17:40 +00:00
present (!1714) present: use window destructor hook 2025-02-19 16:44:50 +01:00
pseudoramiX pseudoramiX: drop swapping request length fields 2025-02-06 22:28:49 +00:00
randr misc.h: unexport compare_version() 2025-02-18 11:17:40 +00:00
record record: drop swapping request length fields 2025-02-06 22:28:49 +00:00
render (!1714) render: use window destructor hook 2025-02-19 16:44:50 +01:00
test misc.h: unexport compare_version() 2025-02-18 11:17:40 +00:00
xfixes misc.h: unexport compare_version() 2025-02-18 11:17:40 +00:00
xkb os: move BUG_*() macros to own private header 2025-02-17 19:32:48 +00:00
.appveyor.yml appveyor: Add libxcvt build dep 2021-11-04 13:03:25 +00:00
.dir-locals.el .dir-locals.el: Add missing final newline 2019-10-01 17:05:28 +00:00
.git-blame-ignore-revs Ignore the coding style change commit during git blame 2024-12-06 09:55:53 +10:00
.gitignore Clean up the .gitignore file 2024-01-12 00:50:24 +00:00
.gitlab-ci.yml ci: update freebsd builder image 2025-02-18 10:43:28 +01:00
.mailmap Add a .mailmap file to canonicalize author names and emails 2023-03-15 18:10:51 +00:00
.travis.yml travis: Add OSX meson build to matrix 2019-05-02 15:42:58 +00:00
COPYING modesetting: Merge modesetting's COPYING into the xserver's. 2014-09-15 12:46:02 -07:00
README.md Fix spelling/wording issues 2020-07-05 13:07:33 -07:00
meson.build build: Bump wayland-protocols requirement to 1.38 2024-12-02 08:55:34 +00:00
meson_options.txt os: drop SUN-DES-1 authentication 2024-06-18 00:52:11 +00:00
xorg-server.m4 xorg-server.m4: just all cflags instead of just sdkdir 2018-09-20 20:12:24 +01:00
xorg-server.pc.in xfree86: link modules against Xorg symbols on Cygwin 2012-04-05 21:57:07 -05:00
xserver.ent.in doc: relocate xserver.ent in the package root directory 2011-05-14 11:22:26 -07:00

X Server

The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.

Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.

For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server

All questions regarding this software should be directed at the Xorg mailing list:

https://lists.freedesktop.org/mailman/listinfo/xorg

The primary development code repository can be found at:

https://gitlab.freedesktop.org/xorg/xserver

For patch submission instructions, see:

https://www.x.org/wiki/Development/Documentation/SubmittingPatches

As with other projects hosted on freedesktop.org, X.Org follows its Code of Conduct, based on the Contributor Covenant. Please conduct yourself in a respectful and civilized manner when using the above mailing lists, bug trackers, etc:

https://www.freedesktop.org/wiki/CodeOfConduct