[MACTCL] Re: Img port

[Mats B. <ma...@pr...>]

Jack Jansen wrote:
> 
> On Saturday, January 19, 2002, at 12:58  PM, Mats Bengtsson wrote:
> >
> > 1)    I build the image libs, libjpeg, libtiff, libpng, and zlib, as
> > separate shared libs (which is how it works on win and unix),
> > which get loaded at runtime by Img. But the loading is made from
> > tcl's present folder (Build) which is not what you want.
> > BTW: Img uses tclMacLoad.c from 8.0p2 to do this, which needed
> > some patching to work.
> > Any better solution here? Can't run the test suite because of this,
> > I think.
> 
> You should be able to store them in the Extensions folder, I think.
> 

Doesn't work:
% package require Img
1.2.4
(Build) 2 % image create photo -file [tk_getOpenFile]
cannot open jpeg.shlb: file not found

It fails when executing:
    err = FSpLocationFromPath(strlen(path), (char *) path, &fileSpec);
where path = "jpeg.shlb", and then it does things I don't understand
including a call GetDiskFragment(). 
I guess it's pretty easy to fix, but should
I get the path to the extensions folder, or is there
another strategy, for instance, to have an all-in-one shared lib with
all image libs included?
I'll figure out something.

> > 2)    Tested opening a number of various image formats, and all
> > work except tiff images, where only the red component shows.
> > When searching the net for mac parts I found a later release of
> > tifflib (3.5.7) which I use. Tried Jack Jansen's mac port, but
> > the CW 7 projects wheren't useful with my CW 6 since all essential
> > settings were lost during conversion.
> 
> Darn. I have the CW6 projects somewhere still in CVS, but I
> would need to dig them out. I'll try to do so next week, if you
> don't hear from me by tuesday drop me another note (because I'll
> have forgotten;-)

I'd appreciate that. No hurry. Thanks.

Daniel Steffen wrote:
> I'd be interested in a copy, if you want I can also host it on my 
> page with the other mac tcl extensions 
> (http://www.maths.mq.edu.au/~steffen/tcltk/)

Thanks, that would be nice. Need to discuss this with Jan Nijtmans also.
I'll send you a copy once I've cleaned it up a bit.

> you could try merging the image shared libraries into the Img shlb 
> (set the merge flag in the info window for the libs) and load them 
> from the current fragment file.
> do you really need to load them explicitly or could you just link 
> against them and let the CFM loader do the work for you?

Merging them I know how to do, but loading them from current fragment
I don't know how it works. Perhaps you could give it a try?

> If you like, I can export Pro7 projects to xml for you which Pro6 can 
> import without loosing settings...

See if Jack comes up with something for me...

Mats