RE: [cgmo-webcgm] Tests for substrings and getting extents

["Galt, Stuart A" <stuart.a.galt@boeing.com>]

Lofton, 

I am having a hard time coming up with a good use case as to why I would

want to have the extents of a substring.  If I wanted to have it respond
to events (like mouse over or clicking) there are other ways of doing
that.
I don't think zooming into a substring would be very common.

The reason that I was going to have 3 strings one with the link in the 
beginning, middle, and end...  The substring part will be in the middle
of the string but I want to make sure that the zero length string in
the initial restricted text element or the final append text element is
handled.  In clear text the CGM will look something like:

RestrText [text box] notfinal "";
BegAPS "substring" "grobject" StList;
...
ApndText notfinal "link";
ENDAPS
ApndText final "link at the beginning";
...


--
Stuart Galt
SGML Resource Group
stuart.a.galt@boeing.com
(206) 544-3656

 

> -----Original Message-----
> From: Lofton Henderson [mailto:lofton@rockynet.com] 
> Sent: Sunday, July 20, 2008 12:50 PM
> To: Galt, Stuart A; cgmo-webcgm@lists.oasis-open.org
> Subject: Re: [cgmo-webcgm] Tests for substrings and getting extents
> 
> Hi Stuart,
> 
> I need some clarification about some of your test proposals.  
> (The session notes don't have much besides your original 
> email proposal, below).
> 
> At 01:36 PM 7/15/2008 -0700, Galt, Stuart A wrote:
> >Substring hotspots:
> >------------------
> >CGM will contain 3 text strings
> >
> >         link first first first
> >         middle link middle
> >         last last last link
> >
> >- if the image displays then open APS in TOS works
> >- test screentip values
> >- check links work
> >- Add a button that uses one of the links as a target
> >- get the APSExtent of a link
> 
> So you're proposing that all substring APS tests will be in a 
> single file, with HTML/script driver to exercise the various subtests?
> 
> I see that the session notes suggest that the APS Extent part 
> should be in a different test.  (Question:  do people think 
> that APS extent on a substring is useful, i.e., does it have 
> a common use case?  I'm just curious -- since these substring 
> APS are not transformable or movable, that eliminates some of 
> the use cases of getExtent().)
> 
> 
> >If there are problems with the begining and final substrings 
> then test 
> >will be separated into "middle" and the first/last test.
> 
> I'm unclear about the string structure you are proposing.  As 
> I recall, when we made the corrigendum to CGM:1999, we wrote 
> it in such a way that only *middle* substrings could be 
> APS-enclosed.  If you want to put an APS on the first word of 
> a string, then you need an empty substring to precede it, and 
> then the APS around the first word.  Similarly for final.
> 
> Do you recall this as well?  We did it because it made the 
> Formal Grammar
> *much* cleaner;  or alternatively, we estimated that the much 
> uglier and more extensive grammar changes otherwise might 
> raise concerns about the corrigendum amongst the ISO folks.
> 
> (I just checked the grammar in the PDF of the corrigendum, 
> and I think my recollection is correct:
> http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_de
> tail.htm?csnumber=50315
> )
> 
> 
> >Object Extents:
> >--------------
> >CGM will contain a few simple geometric shapes, and empty 
> APS, and and 
> >APS that contains just a restricted text string.
> >
> >
> >- Get the object Extents of two of the objects
> >- move ObjectA to align with ObjectB and get extents of ObjectA
> 
> When you say "move", you mean applying a 'translate' transformation?
> 
> >- Get the extents of an empty APS
> >- Get the extents of the APS containing text.
> 
> All for now,
> -Lofton.
> 
> 
> 
> 
> 
>