On 11/20/12 01:49, Adrian wrote:
> Hello,
>
> Is it possible (and suitable) to use FLTK for building a graphical desktop
> environment for Linux (like LXDE, for example). If so, should it be on top of
> X Window, or can it be done without using X at all?
I run flwm as my desktop on linux; been using it for years.
I've modified slightly to have an SGI look.
FLWM is basically a small FLTK app that just happens to be a
window manager, and it runs on top of X as you describe.
There is some direct coding in X calls, which I guess if the app
is a window manager, is unavoidable.
I think flwm's code is still on the net somewhere..
if not, I can upload my modified version.
It's probably a good starting point for anyone wanting to start
with a 'blank slate' window manager; no frills.
In my version, the 'desktop' does not try to represent a directory
browser
the way most window managers do; I never liked that paradigm.
There is only a right click menu off the 'desktop' for accessing and
stowing windows,
and opening common apps I need the most; terminal/mail/firefox/gvim.
I've hard coded these into the flwm code as an Fl_Menu, preferring that
to config files. SGI style function keys for pushing/popping/closing
windows
are hard wired in as well.
I have a small start script that brings up X and then runs flwm;
it's called 'start-flwm' and I run it from the linux text mode terminal
(my linux systems all boot into text mode) by logging in and running
'start-flwm'.
'start-flwm' could be a two line script that just does this:
_________________________________________________________________________ snip
#!/bin/csh -f
exec xinit /usr/local/src/flwm/flwm -- # start X and my version of flwm
_________________________________________________________________________ snip
..but if you want it to automatically open some apps on startup,
then it's better if the script does something more like this:
_________________________________________________________________________ snip
#!/bin/csh -f
cd /usr/local/src/flwm # where I have flwm installed
switch ( "$1" )
case '': # no args? start X and tell it to run
this script on start
exec xinit $0 -xinit -- # recurse ourself with the -xinit flag
(parsed below)
exit 1
case '-xinit': # arg is '-xinit'?
# X is now running.
# Start some apps and then exec flwm
#
# START TWO GNOME TERMINALS
# Put small timing delay between them so if it's a new OS,
# they don't both try to write config files at the same time..
#
( sleep 0; /usr/bin/gnome-terminal --hide-menubar --geometry +150+100 )
&
( sleep 1; /usr/bin/gnome-terminal --hide-menubar --geometry +250+200 )
&
# START A NIXIE CLOCK AT THE LOWER RIGHT CORNER OF SCREEN
# I like to have a clock at all times..
#
/usr/local/bin/nixieclock -geometry -5-5 &
# YOU COULD OPEN FIREFOX AND MAIL HERE
# But I'd rather open these manually if I need them
# from the right-click menu..
#
#firefox & thunderbird &
# SET BACKGROUND IMAGE FOR X
# This is optional, but shows how to do it if you have
# a nice desktop image. In my case it's just a blue background
# with the machine's hostname + ip address in a subtle shade of
blue..
#
if ( -x /usr/bin/xsetbg ) then
/usr/bin/xsetbg /usr/local/src/flwm/tahoe-desktop.jpg # my X bg
image
else
xsri --emblem /usr/local/src/flwm/tahoe-desktop.jpg # my X bg
image
endif
# SET UP 10 MINUTE SCREEN SAVER
# Even LCD screens suffer from 'image burn', and powering down
# the monitor at lunch and at night saves power..
#
/usr/bin/xset +dpms dpms 600 600 600 # 10 minute powerdown
screensaver
# NOW START FLWM
# ..by exec'ing it, so the copy of this shell is replaced with flwm
#
exec /usr/local/src/flwm/flwm
exit 0
endsw
_________________________________________________________________________ snip
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