At 21:50 2003-08-22, Joe English wrote:

> Peter Spjuth wrote:
> 
> > TIP#146, overall anchoring to grid
> > http://www.tcl.tk/cgi-bin/tct/tip/146.html
> >
> > This has the unresolved issue about shrinking.
> > I'd appreciate feedback on it.
> 
> This one doesn't seem fully-cooked yet to me.  It's not
> clear from the TIP how the specification interacts with the
> current [grid] semantics.
> 
> Suggestion: recast the specification as a patch to the
> "GRID ALGORITHM" section of the grid(n) manpage.

I have slightly reworded the spec to better match the
current line in the man page text.
Is there anything unclear about the growing semantics?

> On the shrinking issue, either of #1 or #2 seem sensible.
> I don't like option #3.  It introduces a discontinuity:
> rows with -weight 0 do not stretch or shrink, except when
> all rows have -weight 0, in which case they do shrink.

Yes, you are right.

> Option #3 would also make it impossible to specify a
> layout that's always clipped (sometimes this _is_ the
> right thing to do).  

Also a good point. #2 allows reasonable workarounds to get
both #1 and #3 behaviour, but the opposite is not true.

> If you want stuff to shrink, specify
> a nonzero -weight.  TIP #147 will make this easier, so
> laziness is no excuse :-)

Well, if you want things to shrink but not to grow,
it gets trickier than just setting -weight, but nothing that
can't be solved.
Maybe we should be able to control growing/shrinking
separately as in BLT's table, but that is for another TIP.

/Peter



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