[NTG-context] dvi paper-size

[Hans Hagen]

Tobias Burnus wrote:
> Hello,
> 
> Peter Münster wrote:
> 
>> On Fri, 27 May 2005, Tobias Burnus wrote:
>>  
>>
>>> Should be e.g. for "A4" \special{papersize=210mm,297mm} and for "A5" 
>>> \special{papersize=148mm,210mm}.
>>> If I add this, it actually seems to work here. I failed to create 
>>> something which obtains the papersize automatically.
>>>    
> 
> Ok, the following works:
>    \special{papersize=\the\paperwidth,\the\paperheight}
> 
> It puts (for \setuppapersize[letter][letter]) the following into the DVI 
> file (dvips -d3 test2.dvi 2>&1 |grep special):
> papersize=614.295pt,794.96999pt  which gv shows as letter.
> Having the right unit (as defined in page-lay.tex, i.e. 148mm×210mm for 
> A5, 8.5in×11in for letter etc.) would be probably better, but this works.
> 
>> Yes, that's the problem. I tried
>> \special{papersize=\paperwidth,\paperheight}
>>  
> 
> That expands to:
>   papersize=\paperwidth ,\paperheight
> which dvips cannot digest.
> 
>> and
>> \special{papersize=\PtToCm{\paperwidth},\PtToCm{\paperheight}}
>>  
> 
> Whereas that expands to
> 
> papersize=\begingroup \scratchdimen \paperwidth \relax \scratchdimen 
> 0.0351459804\scratchdimen 0.0cm\endgroup ,\begingroup \scratchdimen 
> \paperheight \relax \scratchdimen 0.0351459804\scratchdimen 0.0cm\endgroup
> <cmr12.pfb>[1Processing special: papersize=\begingroup \scratchdimen 
> \paperwidth \relax \scratchdimen 0.0351459804\scratchdimen 
> 0.0cm\endgroup ,\begingroup \scratchdimen \paperheight \relax 
> \scratchdimen 0.0351459804\scratchdimen 0.0cm\endgroup
> 
> still something dvips cannot digest.
> 
> I have to admit, I actually fail to expand
>   \special{papersize=\PtToCm{\the\paperwidth},\PtToCm{\the\paperheight}}
> correctly. It always ends up as \begingroup ... in the DVI file (i.e. as 
> above with \paperheight|weight replaced by its numerical value).

how about adding something to spec-tr:

\definespecial\dosetuppaper#1#2#3%
   {\special{papersize=#2,#3}}

paper size is already supported in the other backends for ages -)

is this special official?

Hans

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