labels and new structure code

labels and new structure code

[Thomas A. Schmitz]

Hi all, Hans,

here is a bug that remains with the new structure code after Hans  
fixed many things two weeks ago. I want a counter that is reset at  
every odd chapter. This works as expected in mkii (and used to work in  
mkiv), but complains about a "Missing number, treated as zero" and  
fails to compile in current beta:

\setupcolors[state=start]

\setuphead
    [section]
    [command={{\determineheadnumber[section]}\ifodd\currentheadnumber 
\resetSlideNumber\incrementSlideNumber \else\incrementSlideNumber \fi},
     expansion=yes]

\definelabel[SlideNumber][headstyle=normal,way=bytext]

\define\SLN{\color[red]{ [\nextSlideNumber]}}

\starttext

\section{One}

should be 2: \SLN

\section{Two}

should be 4: \SLN

\section{Three}

should be 2 again: \SLN

\section{Four}

should be 4 again: \SLN

\stoptext

Even if you comment out the command=... line, you'll see that labels  
in mkiv still don't quite do what they should.

All best

Thomas
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___________________________________________________________________________________

Re: labels and new structure code

[Hans Hagen]

Thomas A. Schmitz wrote:
> Hi all, Hans,
> 
> here is a bug that remains with the new structure code after Hans fixed 
> many things two weeks ago. I want a counter that is reset at every odd 
> chapter. This works as expected in mkii (and used to work in mkiv), but 
> complains about a "Missing number, treated as zero" and fails to compile 
> in current beta:

ok, fixed in the beta

the problem is that the old code was somewhat crippled as it uses this 
two step method (determine and usage) due to expansion issues

in the current beta mkiv code we can do:

\setuphead
    [section]
    [after=\setups{section:after},
     expansion=yes]

\startsetups section:after
     \ifodd\namedheadnumber{section}\relax
        \resetSlideNumber\incrementSlideNumber
     \else
        \incrementSlideNumber
     \fi
     \blank
\stopsetups

btw, you misuse 'command' which in turn has side effects; use after instead

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: labels and new structure code

[Thomas A. Schmitz]

On Jun 7, 2009, at 2:12 PM, Hans Hagen wrote:

> ok, fixed in the beta
>
> the problem is that the old code was somewhat crippled as it uses  
> this two step method (determine and usage) due to expansion issues
>
> in the current beta mkiv code we can do:
>
> \setuphead
>   [section]
>   [after=\setups{section:after},
>    expansion=yes]
>
> \startsetups section:after
>    \ifodd\namedheadnumber{section}\relax
>       \resetSlideNumber\incrementSlideNumber
>    \else
>       \incrementSlideNumber
>    \fi
>    \blank
> \stopsetups
>
> btw, you misuse 'command' which in turn has side effects; use after  
> instead

OK, thanks a lot Hans! Have replaced "command" with "after"; now my  
test document compiles cleanly. Two questions though: \nextSlideNumber  
used to simply expand to "2" "3" etc. Now I get "SlideNumber 1.2"  
"SlideNumber 1.3." How can I get the old behavior back? And: I'm doing  
this in xml documents, and here, the counter is not reset. I assume  
you want a new example document :-)

All best

Thomas
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___________________________________________________________________________________

Re: labels and new structure code

[Hans Hagen]

Thomas A. Schmitz wrote:
> 
> On Jun 7, 2009, at 2:12 PM, Hans Hagen wrote:
> 
>> ok, fixed in the beta
>>
>> the problem is that the old code was somewhat crippled as it uses this 
>> two step method (determine and usage) due to expansion issues
>>
>> in the current beta mkiv code we can do:
>>
>> \setuphead
>>   [section]
>>   [after=\setups{section:after},
>>    expansion=yes]
>>
>> \startsetups section:after
>>    \ifodd\namedheadnumber{section}\relax
>>       \resetSlideNumber\incrementSlideNumber
>>    \else
>>       \incrementSlideNumber
>>    \fi
>>    \blank
>> \stopsetups
>>
>> btw, you misuse 'command' which in turn has side effects; use after 
>> instead
> 
> OK, thanks a lot Hans! Have replaced "command" with "after"; now my test 
> document compiles cleanly. Two questions though: \nextSlideNumber used 
> to simply expand to "2" "3" etc. Now I get "SlideNumber 1.2" 
> "SlideNumber 1.3." How can I get the old behavior back? And: I'm doing 
> this in xml documents, and here, the counter is not reset. I assume you 
> want a new example document :-)

yeah

you need to reset the prefix, like prefix=no ; depends a bit on your 
definition

(i need to figure out a proper default scheme for a whole doc which is 
kind of tricky since we have more control now)


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: labels and new structure code

[Thomas A. Schmitz]

On Jun 7, 2009, at 3:04 PM, Hans Hagen wrote:

> yeah
>
> you need to reset the prefix, like prefix=no ; depends a bit on your  
> definition
>
> (i need to figure out a proper default scheme for a whole doc which  
> is kind of tricky since we have more control now)

Oops, I am sorry, resetting the counter works in my xml files as well;  
I had a second after= assignment which confused ConteXt. It's almost  
perfect, but there's a spurious space creeping in somewhere. Reusing  
my old example:

\startsetups section:after
    \ifodd\namedheadnumber{section}\relax
       \resetSlideNumber\incrementSlideNumber
    \else
       \incrementSlideNumber
    \fi
    \blank[0*line]
\stopsetups

\setuphead
    [section]
    [after=\setups{section:after},
     page=yes,
     expansion=yes,
     before={\blank[0*big]}]

\definelabel[SlideNumber][headstyle=normal,way=bytext,prefix=no,text=]

\define\SLN{\color[red]{[\nextSlideNumber]}}

\starttext

\section{One}

should be 2: \SLN

\section{Two}

should be 4: \SLN

\section{Three}

should be 2 again: \SLN

\section{Four}

should be 4 again: \SLN

\stoptext

Thanks for your help, and best wishes!

Thomas
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://foundry.supelec.fr/projects/contextrev/
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___________________________________________________________________________________