Re: [NTG-context] \currentheadnumber does not work

10 Jul 2016


      Hi Wolfgang,
Thank you for the code and still as clear explanations.
Fabrice

2016-07-09 12:45 GMT+02:00 Wolfgang Schuster :
...
Fabrice Couvreur 
9. Juli 2016 um 12:17
Hi Wolfgang,
In the first example, so I do not need the command  \currentheadnumber
but just do :
\setuphead
   [chapter]
   [command=\HeadTitle,
    headstyle=\ss,
    numbercommand=\Headed]
ConTeXt passes the section number to the argument of the \Headed command.
But in this second example, using the command
\determineheadnumber[chapter], the chapter number is always 0
You need \determineheadnumber[...] each time when the value for
\currentheadnumber should change.
\setuppagenumbering[location=footer]
\startusableMPgraphic{NumberHead}
      picture r ;
      r := image ( graphictext
        \MPstring{chapter}
        scaled 4pt
        withfillcolor \MPcolor{lightgray}
        withpen pencircle scaled 1pt ; ) ;
      draw r ;
    \stopusableMPgraphic
\defineoverlay[NumberHead][\uniqueMPgraphic{NumberHead}]
\def\processMPheadnumber#1%
  {\setMPtext{chapter}{\bf#1}
   \useMPgraphic{NumberHead}}
\setuphead
   [chapter]
   [command=\HeadTitle,
    headstyle=\ss,
    numbercommand=\processMPheadnumber{\currentheadnumber}]
The following works here.
\startusableMPgraphic{NumberHead}
      picture r ;
      r := image ( graphictext
        "\bf\namedheadnumber{chapter}"
        scaled 4pt
        withfillcolor \MPcolor{lightgray}
        withpen pencircle scaled 1pt ; ) ;
      draw r ;
\stopusableMPgraphic
\def\processMPheadnumber#1%
  {\useMPgraphic{NumberHead}}
\setuphead
   [chapter]
   [command=\HeadTitle,
    headstyle=\ss,
    numbercommand=\processMPheadnumber]
Wolfgang
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