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If you are the maintainer of an applet, feel free to commit - unless we're
very close to a release. In that case, contact us.
If you just want to hack, let us know. Most of the applets are unmaintained,
but you should try to contact the maintainer (or past maintainer) before
working on them, to avoid duplicate work and stepping on any toes. If unsure,
ask us about it.
Release planning for GNOME Applets is online at
http://live.gnome.org/GnomeApplets
We share a mailing list with GNOME Utilities, you can subscribe to
gnome-utils-list@gnome.org
Please attach your patches to a bug in http://bugzilla.gnome.org, either by
filing new bugs or attaching it to an old one.
Patches should be generated with `diff -uprN` (you can add "diff -up" to your
~/.cvsrc).
Some tips for hacking/debugging the applets:
1) The Panel Applet Writer's Reference Manual, including the PanelApplet
library documentation, can be found at
http://developer.gnome.org/doc/API/2.0/panel-applet/libpanel-applet.html,
or in gnome-panel/doc/reference/panel-applet (source). It is not
completely up to date, but it covers the basics of writing an applet.
2) Look at the other applet implementations. One of the simpler applets is
the fish applet, which lives in gnome-panel/applets/fish.
3) Read the article about debugging GNOME Applets at
http://www.davyd.id.au/articles/debugging-gnome-applets.shtml.
This article also contains a list of common considerations when developing
applets. Please, please read this article, it covers everything you're
likely to need to know. If you find anything is missing, then contact
the maintainers.
4) Be weary of static, global variables if you plan to allow the user
to be able to add multiple instances of the applet. Each instance will
share the static varible. This is described in the debugging article, under
"Other considerations".
5) You'd probably want to run the applets from CVS, without nescessarily doing
the same with all of GNOME. To do this, install the applets from CVS to a
different prefix than the rest of GNOME, and change your bonobo servers
directory to $prefix/lib/bonobo/servers. You'll find the config file by
running "bonobo-activation-sysconf --config-file-path". Add the directory to
as an <item> at the top of <searchpath>. Log out, run bonobo-slay and make
sure no bonobo processes are running. When you log in again, your applets
should be running from the new prefix.
Running single applets from CVS is described further in Davyd's debugging
article.
6) Please make use of the global defines already provided for you, rather
then defining your own in your Makefile.am. Some useful global defines are
GNOME_ICONDIR, GNOME_PIXMAPSDIR, GNOME_LOCALEDIR, GNOME_GLADEDIR, DATADIR,
SYSCONFDIR, LIBDIR and VERSION.
7) Attempt to use the Nautilus/GNOME-VFS coding style in GNOME-Applets. Code
should be neatly tabbed, with 8 character tabs, and fit on an 80 character
wide terminal. Ideally
functions (will_be_called (LIKE, THIS));
opening braces will be on a new line and variables will be declared at the
top of the block without assignment, C89 style.
Davyd Madeley <davyd@madeley.id.au>
Kevin Vandersloot <kfv101 at psu dot edu>
Christoffer Olsen <co at deworks dot net>
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