[NTG-context] Re: \currentlistentrynumber and \currentlistentrylocation

2 Mar 2025

      On 3/2/2025 12:33 PM, Hans Hagen wrote:
...
On 3/1/2025 2:17 PM, Pablo Rodriguez via ntg-context wrote:
...
On 3/1/25 13:26, Pablo Rodriguez via ntg-context wrote:
...
Is there any way (considering the sample above, where chapter has to be
in Roman capital numbers) to get the pure number value of
\currentlistentrynumber?
Partly replying to myself, I found it in strc-lst.mkxl:
   \structurelistrawnumber{chapter}
...
BTW, I wonder also how could I get a link to the corresponding chapter
(as standard lists always have with interaction enabled).
But this is something yet to be discovered.
\definelistalternative
     [pmcols]
     [renderingsetup=list:pmcol]
\startsetups [list:pmcol:common]
     \relax % prevent lookahead
     [\currentlistentrynumber]
     \nbsp\nbsp\nbsp
     \startcurrentlistentrywrapper
         \currentlistentrypagenumber
         \narrownobreakspace · \narrownobreakspace
         \the\numexpr\currentlistentrypagenumber + 1\relax
     \stopcurrentlistentrywrapper
\stopsetups
\startsetups [list:pmcol]
     \ifnum{\structurelistrawnumber{\currentlist} ; 3} = 1\relax
         \dontleavehmode
         \rlap {
             \directsetup{list:pmcol:common}
         }
     \orelse\ifnum{\structurelistrawnumber{\currentlist} ; 3} = 2\relax
         \hfill
         \directsetup{list:pmcol:common}
     \else
         \hfill
         \llap {
             \directsetup{list:pmcol:common}
         }
         \crlf
    \fi
\stopsetups
it's wikifyable I guess (and made into a test suite example)
You still need soem acessor for the raw page number because you cannot 
just increment something that gets formatted. So I added an extra helper 
(and made the other more consistent, basically they were just internal 
helpers). So then we get this:

\setupinteraction
     [state=start]

\definelistalternative
     [pmcols]
     [renderingsetup=list:pmcol]

\startsetups [list:pmcol:common]
     \relax % prevent lookahead
     [\currentlistentrynumber]
     \nbsp\nbsp\nbsp
     \startcurrentlistentrywrapper
         \currentlistentrypagenumber
         \narrownobreakspace · \narrownobreakspace
         \the\numexpr\structurelistuserpagenumber + 1\relax
     \stopcurrentlistentrywrapper
\stopsetups

\startsetups [list:pmcol]
     \ifnum{\structurelistnumber ; 3} = 1\relax
         \dontleavehmode
         \rlap {
             \directsetup{list:pmcol:common}
         }
     \orelse\ifnum{\structurelistnumber ; 3} = 2\relax
         \hfill
         \directsetup{list:pmcol:common}
     \else
         \hfill
         \llap {
             \directsetup{list:pmcol:common}
         }
         \crlf
    \fi
\stopsetups

\definestructureconversionset[rom][n,R]

\setuphead
     [title]
     [page=yes]

\setuphead
     [chapter]
     [page=even,
      sectionconversionset=rom]

\starttext

   \placelist
     [chapter]
     [alternative=pmcols,criterium=all,interaction=all]

    \page

     \dorecurse {10} {
         \startchapter[title={Zapf #1}]
            \samplefile{zapf}
         \stopchapter
     }

\stoptext

You need a newer strc-lst which i'll send you (and wolfgang) off list. 
There will be no upload till after the te xlive release (end of the 
week) so any bug fix / feature is pending till then.

Hans

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