[XForms] Using Xform in background without display
Jens Thoms Toerring
jt at toerring.de
Thu Mar 13 09:12:24 EDT 2008
To subscribers of the xforms list
On Thu, Mar 13, 2008 at 12:50:58PM +0100, Jean-Marc Lasgouttes wrote:
> Jens Thoms Toerring <jt at toerring.de> writes:
> > Are you actually using anything from XForms when you want the
> > program to run without any graphics output?
> I guess the idea is to use flimage. Does this work without a display?
Mmmm. I have to admit that I didn't went through that part of
XForms more than very superficially yet, so I could be comple-
tely wrong. But a short look at that part of the code shows
that quite a number of Xlib functions are used there, so I
would guess that you can't use that part (which already is
separated out into its own library, libflimage.so) without
having a display (or at least some kind of Xserver that fakes
a display if there's no screen, which using using xvfb might
And, as far as my (very limited) understanding goes, all the
functions in flimage are meant to read in a graphics file and
display it on the screen (e.g. on top of a button etc.) or to
write out an image from an X drawable to a file. In both cases
you would need a display.
Since Didier wrote that he just wants to write out jpg files
I guess that he will always need to create some X drawable,
draw something onto it and then write it out. But that would
involve an X drawable. But if he just wants to convert e.g.
a gif image to a jpg I would rather recommend to use some-
thing more suitable in that case, e.g. ImageMagick.
Best regards, Jens
\ Jens Thoms Toerring ________ jt at toerring.de
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