On Sat, Jul 31, 2004 at 06:56:02PM -0400, krispyfi wrote: > Hello all. please bear in mind that i am a total linux noob. > > I'm trying to get fvwm to display a random background image every time i > switch to a certain desktop. I somehow managed to bang out a shellscript > to be exec'ed by fvwmbacker with the last line being something like > "fvwm-root $randomWallpaper". > > That was all well and good, but on my slow machine it would take like 5 > seconds to switch. I heard about using colorsets to pre-cache > wallpapers, but then how do i call up a random colorset? fvwm-root won't > take a colorset as an argument. my second try was to use piperead. as in > "fvwmbacker (desk 0) piperead randColorset.sh" with the last line of > randColorset being like "echo $randomColorset" It doesn't work.
> if i am understanding this correctly, "echo" sends the string to
> standard out
Correct.
> which piperead redirects to fvwmbacker.
no, it redirects the output to fvwm to execute. FvwmBacker never
gets any reply.
> what am i doing
> wrong? i know piperead works because im using it to read the output of a
> script that looks in my wallpaper folder and assigns the wallpapers to
> colorsets. and i know the colorsets work because i can say like
> "fvwmbacker (desk 0) colorset 80"
> and it will change to the wallpaper assigned to colorset 80 in the script.
>
> any help is appreciated
FvwmBacker currently does not support dynamic configuration. The
colour set number can not be changed without restarting
FvwmBacker. Actually, this is a problem with most modules, not
just FvwmBacker. To get around the problem, do this:
* Name your images bg_1.xpm to bg_<n>.xpm.
* Reserve a colour set for each background image, e.g.
Colorset 21 pixmap bg1.xpm
Colorset 22 pixmap bg2.xpm
Colorset 23 pixmap bg3.xpm
...
This takes care of caching the images.
* Make a colour set for FvwmBacker to use:
Colorset 20 pixmap bg1.xpm
*FvwmBacker: Command (Desk *) Colorset 20
Note that the colour set never changes.
* Use FvwmEvent to change the image in
*FvwmEvent: cmd
*FvwmEvent: new_desk "piperead 'echo colorset 20 pixmap bg_$$[RANDOM % 3
+ 1].xpm'"
(replace the 3 with the actual number of images).
Whenever the desk is changes, FvwmEvent updates colour set 20.
This should be fast because the image is already cached.
Ciao
Dominik ^_^ ^_^
--
Dominik Vogt, [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
pgpo9xcgnaGxA.pgp
Description: PGP signature
