[NTG-context] fluctuating baseline of header text

j. van den hoff veedeehjay at googlemail.com
Sat Dec 27 12:16:54 CET 2014

On Sat, 27 Dec 2014 10:40:30 +0100, Pablo Rodriguez <oinos at gmx.es> wrote:

> On 12/26/2014 11:32 PM, j. van den hoff wrote:
>> [...]
>> in this example (and with this font) the problem is only occuring when
>> toggling between pages 6/7 or 7/8 (at sufficient zoom it's easy to see),
>> i.e.the header is shifted downward on page 7. in other docs with  
>> different
>> fonts it happens across multiple pages. my guess would be it has to
>> do with the digit heights in the different fonts and the fact that the
>> page numbers are much larger than the heading, but that's only a guess.
>> can someone confirm the problem?
> Hi Jörg,
> this sample shows the issue without zooming:

thanks for confirming this. @devs: can this be considered "misbehaviour"  
(not to call it a bug ;-)) or is it somehow unavoidable?

>     \setuppapersize[A8]
>     \setupheader      [style=\itx\ss]
>     \setupheadertexts [section]
>     \setuppagenumbering[location={header,margin}, style=\bfd]
>     \starttext
>     \dorecurse{80}{\section{Introduction}
>     bla\page[yes]}
>     \stoptext
> When the glyph 7 is involved in page number, baseline is a bit lower. As
> you wrote, I guess this is related with the glyph metrics.

yes. this seems to be supported by the fact that it happens differently  
(usually more frequently) with other fonts.


> Just in case it helps,
> Pablo

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