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, dominik.vogt_at_gmx.de
Reply-To: dominik.vogt_at_gmx.de
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Received on Sun Aug 01 2004 - 15:53:41 BST