[NTG-context] blank line and signals

Wolfgang Schuster schuster.wolfgang at googlemail.com
Tue Mar 16 01:32:37 CET 2010


Am 14.03.10 15:07, schrieb Andreas Harder:
> If one removes the blank line after \section{Section} the output is correct, otherwise \TestSpace is ignored …
>    
\def\DefineSectionBlank
   {\dotripleempty\doDefineSectionBlank}

\def\doDefineSectionBlank[#1][#2][#3]#4%
   {\edef\CurrentSection{#1}%
    \setvalue{#1:#2:\ifthirdargument\the\dimexpr#3\relax\fi}{#4}}

\def\SectionBlank#1#2%
   {\edef\CurrentSection{#1}%
    
\executeifdefined{#1:#2:\LastSectionBlankSignal}{\executeifdefined{#1:#2:\the\dimexpr\zeropoint\relax}{\getvalue{#1:#2:}}}%
    \doif{#2}{after}{\SectionBlankSignal}}

\let\LastSectionBlankSignal\zeropoint

\EveryPar{\let\LastSectionBlankSignal\zeropoint}

\def\SectionBlankSignal
   
{\setevalue{LastSectionBlankSignal}{\the\dimexpr\csname\CurrentSection 
Signal\endcsname\relax}}

% chapter

\DefineSectionBlank [Chapter] [before] {\blank[force,48pt]}
\DefineSectionBlank [Chapter] [after]  {\blank[20pt]}

\newsignal\ChapterSignal

\setuphead
   [chapter]
   [before=\SectionBlank{Chapter}{before},
    after=\SectionBlank{Chapter}{after}]

% section

\newsignal\SectionSignal

\DefineSectionBlank [Section] [before] [\ChapterSignal] {\blank[18pt]}
\DefineSectionBlank [Section] [before]                  {\blank[24pt]}
\DefineSectionBlank [Section] [after]                   {\blank[18pt]}

\setuphead
   [section]
   [before=\SectionBlank{Section}{before},
    after=\SectionBlank{Section}{after}]

\showgrid

\starttext

\chapter{Chapter}

\section{Section}

\chapter{Chapter}\edef\CurrentSection{Section}\SectionBlankSignal % tell 
\section the last header was \section too!

\section{Section}

\chapter{Chapter}

text

\section{Section}

\stoptext

Wolfgang



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