Re: [NTG-context] Highlight current chapter in list

8 Nov 2012

      On 11/8/2012 11:06 AM, Marco Patzer wrote:
...
2012-11-08 Wolfgang Schuster:
Hi Wolfgang!
...
\startsetups [headlist]
   \framed[align=normal, frame=off]
     {\placelist [chapter] [alternative=highlight, criterium=all]}
\stopsetups
\definelistalternative
   [highlight]
   [renderingsetup=list:highlight]
I like the flexibility of renderingsetups for \defineheadalternative,
but frankly, I didn't know they can be used for lists as well and
I was clueless about the best place to hook into.
...
\startsetups [list:highlight]
   \par
   \startlinealignment[middle]
     \doifelse{\fetchmark[chapter][first]}{\currentlistentrytitle}
    %\doifelse{\fetchmark[chapter][first]}{\ctxcommand{listtitle("\currentlist",\currentlistindex)}}
       {\color[red] {\currentlistentrytitle}}
       {\color[blue]{\currentlistentrytitle}}
   \stoplinealignment
   \par
\stopsetups
That's a neat and clean solution. Thanks Wolfgang.
Wolfgang:

Say that we have:

\installcorenamespace{internalreference}

\def\structureheadlocation#1%

{\csname\??internalreference\ifcsname\??internalreference#1\endcsname#1\else\s!default\fi\endcsname}

\letvalue{\??internalreference\s!default}\!!zerocount

\def\storeinternalreference#1#2%
   {\setxvalue{\??internalreference\currentstructurename}{#2}}

and in \strc_sectioning_register add:

\storeinternalreference\currentstructurename\nextinternalreference

then we can say:

\startsetups [list:highlight]
   \par
   \startlinealignment[middle]
   \doifelse\currentlistentrylocation{\structureheadlocation{chapter}}
       {\color[red] {\currentlistentrytitle}}
       {\color[blue]{\currentlistentrytitle}}
   \stoplinealignment
   \par
\stopsetups

which is just comparing numbers (so one can also say:

\startsetups [list:highlight]
   \par
   \startlinealignment[middle]
   \ifnum\currentlistentrylocation=\structureheadlocation{chapter}\relax
       \color[red] {\currentlistentrytitle}
   \else
       \color[blue]{\currentlistentrytitle}
   \fi
   \stoplinealignment
   \par
\stopsetups

but that's for low level coders)

Hans

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