Am 04.11.2008 um 22:39 schrieb Marcin Borkowski:
> Dnia Tue, Nov 04, 2008 at 10:17:51PM +0100, Wolfgang Schuster
> napisał(a):
>>
>> Am 04.11.2008 um 21:21 schrieb Marcin Borkowski:
>>
>>> Hi,
>>>
>>> I have the following in my code:
>>>
>>> \def\doPutTitle#1{%
>>> \startalignment[middle]
>>> \bfb
>>> \page[bigpreference]
>>> \blank[2*big]
>>> #1%
>>> \page[no]%
>>> \blank[big]%
>>> \page[no]%
>>> \stopalignment
>>> \page[no]%
>>> }%
>>>
>>> Why is it still possible that I have a page break after, say,
>>> \doPutTitle{some title} (in MkII, in MkIV page breaks fall in
>>> different
>>> places). Which percentage signs and \page[no]'s are unnecessary
>>> here?
>>
>> \def\doPutTitle#1%
>> {\page[bigpreference]
>> \vbox\bgroup
>> \raggedcenter
>> #1%
>> \egroup
>> \nobreak\blank[big]}
>
> OK, though this looks rather low-level. I was thinking about
> something
> more user-friendly;).
>
> This raises a philosophical question: is it the "ConTeXt way" to use
> low-level constructs in environments and high-level in documents?
> Or is
> it better to avoid low level whenever possible? Also, your code mixes
> low-level commands (\vbox, which is a TeX prmitive, \raggedcenter,
> which
> is a ConTeXt low-level command, I guess) and high-level ones (\blank).
> I understand that this ensures a uniform vertical spacing (\blank[big]
> is obviously better than \vskip 10pt;)), but I thought that it is
> against ConTeXt philosophy to use low-level stuff unless something
> really non-standard is needed.
Here is a better method, there is nothing wrong with low level but
you should know what you do.
\defineblankmethod [nobreak] {\nobreak}
\def\doPutTitle#1%
{\framed[frame=offwidth=\textwidth,align=middle]{#1}%
\blank[nobreak,line]}
Wolfgang
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