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A lightweight compositor for X11
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Richard Grenville e912fcde7b Feature #51: Re-initialize when SIGUSR1 is received 
- Create a session_t structure, to get rid of most global variables and
  let information pass in/out mostly through parameters. Huge changes,
  so bugs may very well appear. I'm worried about resource leakages, in
  particular.

- Add gcc attributes on various functions.

- Add Doxygen configuration.

- Replace much Xlib Bool with C99 bool.

- Add and adjust some comments.

- Drop unused parameters from some functions.

- Cache default Visual and Depth, mainly to shorten code.

- Rename some types, variables, and functions.

- Add win_ev_stop() and set_ignore_next() for convenience.

- Modify wid_get_prop_wintype() and wid_get_opacity_prop() to use
  wid_get_prop().

- Rename --respect-attr-shadow to --respect-prop-shadow.

- Fix a memory leak in --respect-prop-shadow.

- Many other small changes.
2012-11-19 11:44:58 +08:00
bin Merge branch 'master' into richardgv-dev 2012-11-14 18:46:26 +08:00
man Misc: Documentation updates 2012-11-14 20:44:31 +08:00
src Feature #51: Re-initialize when SIGUSR1 is received 2012-11-19 11:44:58 +08:00
.gitignore Feature #51: Re-initialize when SIGUSR1 is received 2012-11-19 11:44:58 +08:00
_CMakeLists.txt Merge branch 'master' into richardgv-dev 2012-11-14 18:46:26 +08:00
compton.sample.conf Misc: Code cleanup 2012-11-14 21:34:51 +08:00
CPackConfig.cmake Bug fix: Window rendered incorrectly if has no border with -e 2012-11-06 11:37:29 +08:00
desc.txt Misc: #49: Add CMake support 2012-10-03 13:34:54 +08:00
Doxyfile Feature #51: Re-initialize when SIGUSR1 is received 2012-11-19 11:44:58 +08:00
LICENSE update readme and man page. 2012-10-22 07:50:18 -05:00
Makefile Misc: Asciidoc man page update 2012-11-05 18:06:31 +08:00
README.md Misc: Documentation updates 2012-11-14 20:44:31 +08:00

README.md

Compton

Compton is a compositor for X, and a fork of xcompmgr-dana.

I was frustrated by the low amount of standalone lightweight compositors. Compton was forked from Dana Jansens' fork of xcompmgr and refactored. I fixed whatever bug I found, and added features I wanted. Things seem stable, but don't quote me on it. I will most likely be actively working on this until I get the features I want. This is also a learning experience for me. That is, I'm partially doing this out of a desire to learn Xlib.

Changes from xcompmgr:

  • inactive window transparency (specified with -i)
  • titlebar/frame transparency (specified with -e)
  • menu transparency (thanks to Dana)
  • shadows are now enabled for argb windows, e.g. terminals with transparency
  • removed serverside shadows (and simple compositing) to clean the code, the only option that remains is clientside shadows
  • configuration files (specified with --config)
  • colored shadows (with --shadow-[red/green/blue] value)
  • a new fade system
  • vsync (still under development)
  • several more options

Fixes from the original xcompmgr:

  • fixed a segfault when opening certain window types
  • fixed a memory leak caused by not freeing up shadows (from the freedesktop repo)
  • fixed the conflict with chromium and similar windows
  • many more

Building

Dependencies:

B for build-time

R for runtime

  • libx11 (B,R)
  • libxcomposite (B,R)
  • libxdamage (B,R)
  • libxfixes (B,R)
  • libXext (B,R)
  • libxrender (B,R)
  • libXrandr (B,R)
  • pkg-config (B)
  • make (B)
  • xproto / x11proto (B)
  • bash (R)
  • xprop,xwininfo / x11-utils (R)
  • libpcre (B,R) (Will probably be made optional soon)
  • libconfig (B,R) (Will probably be made optional soon)
  • libdrm (B) (Will probably be made optional soon)
  • libGL (B,R) (Will probably be made optional soon)
  • asciidoc (B) (if you wish to run make docs)

How to build

To build, make sure you have the dependencies above:

# Make the main program
$ make
# Make the newer man pages
$ make docs
# Install
$ make install

(Compton does include a _CMakeLists.txt in the tree, but we haven't decided whether we should switch to CMake yet. The Makefile is fully usable right now.)

Known issues

  • VSync does not work too well. It's widely reported that tearing still happens on the top of the screen. I do not know how to fix the issue.

  • If --unredir-if-possible is enabled, when compton redirects/unredirects windows, the screen may flicker. Using --paint-on-overlay minimizes the problem from my observation, yet I do not know if there's a cure.

  • compton may not track focus correctly in all situations. The focus tracking code is experimental. --use-ewmh-active-win might be helpful.

  • Compton may give ugly shadow to windows with ARGB background if -z is enabled, because compton cannot determine their real shapes. One may have to disable shadows on those windows with window-type-specific settings in configuration file or --shadow-exclude.

  • There are two sets of man pages in the repository: the man pages in groff format (man/compton.1 & man/compton-trans.1) and the man pages in Asciidoc format (man/compton.1.asciidoc & man/compton-trans.1.asciidoc). The Asciidoc man pages are much more up-to-date than the groff ones, and it is viewable online. As chjj has not yet expressed his attitude towards switching to Asciidoc man pages, I kept both versions. By default the groff version is installed, unless you run make docs.

Usage

Please refer to the Asciidoc man pages (man/compton.1.asciidoc & man/compton-trans.1.asciidoc) for more details and examples.

Note a sample configuration file compton.sample.conf is included in the repository.

Support

  • Bug reports and feature requests should go to the "Issues" section above.

  • Our (semi?) official IRC channel is #compton on FreeNode.

  • Some information is available on the wiki, including (and presently, only includes) a FAQ.

License

Although compton has kind of taken on a life of its own, it was originally an xcompmgr fork. xcompmgr has gotten around. As far as I can tell, the lineage for this particular tree is something like:

  • Keith Packard (original author)
  • Matthew Hawn
  • ...
  • Dana Jansens
  • chjj and richardgv

Not counting the tens of people who forked it in between.

Compton is distributed under MIT license, as far as I (richardgv) know. See LICENSE for more info.