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pngphoon
Written by Sven Oliver Moll <svolli@svolli.org>
Available at: http://svolli.org/software/pngphoon/
This program is intended as a successor to the great xphoon program
(X PHase of mOON), which was written by
Jef Poskanzer <jef@acme.com> and Craig Leres <leres@ee.lbl.gov>
and is available from: http://www.acme.com/software/xphoon/
It uses some code from this program. For these fragments the following
license applys:
Copyright (C) 1988,1991 by Jef Poskanzer <jef@acme.com> and
Craig Leres <leres@ee.lbl.gov>. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
The png file writing code was originally written by
Guillaume Cottenceau <gc@mandrakesoft.com> and released under the terms
of the GPL. (http://zarb.org/~gc/html/libpng.html)
For all other code (which was written by me) the GNU GPL applies which is
provided as a separate file ('COPYING')
xphoon is a program that displays the actual phase of the moon on the X11
root window. Nowadays all desktop systems like KDE hide the X11 rootwindow
with an own background image, so xphoon could paint as much in the root
window as it likes to, but nothing was to been seen. KDE has an advanced
interface for programs to dynamically provide background images in png
format. That's what is program was originally written for.
Compiling:
- necessary are only a C compiler and
- the development files of the png library (png.h and libpng.so or .a)
- a simple "make" should create the binary.
Setting up pngphoon for KDE:
- select configure desktop
- bring up the advanced options dialog
- check "Use the following program for drawing the background"
- click add and fill out the form like this:
Name: pngphoon
Comment: Phase of moon
Command: /usr/local/bin/pngphoon -w %x -h %y -f %f
Preview Cmd: /bin/true
Executable: /usr/local/bin/pngphoon
Refresh Time: 60 min
- click "OK" on everything you opened
Setting up pngphoon for GNOME:
For GNOME it's not so simple. I hacked up a small shell-script that's run via
cron on my main system, where I'm constantanly loggin in. On my notebook it's
run via the autostart mechanism.
---8<---8<---
#!/bin/sh
width=1920
height=1200
file="$HOME/.gnome2/share/images/moon.png"
pngphoon -w $width -h $height -f "$file"
gconftool-2 --type string --set /desktop/gnome/background/picture_filename "$file"
---8<---8<---
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