Hi Pablo,
I have had lots of problems with getting the correct figure dimensions
for external images. In the end, I now use the code below. It is just
as low-level and much more inefficient than your code, but it has not
failed me yet.
\newdimen\MYfigurewidth
\newdimen\MYfigureheight
\unexpanded\def\MYgetfiguredimensions
{\dodoubleempty\MYdogetfiguredimensions}
\def\MYdogetfiguredimensions[#1][#2]%
{\setbox0=\hbox{\externalfigure[#1][#2]}%
\MYfigurewidth=\wd0
\MYfigureheight=\ht0 }
And used like:
\MYgetfiguredimensions[cow.pdf][page=1]
\ifdim\MYfigurewidth>\MYfigureheight
…
\fi
and I only use Hans’ \getfiguredimensions when I need to know a pdf page count.
It is not that Hans’ macro is bad, but external figures (especially PDF,
but also PNGs) can be very misbehaved.
Actually forcing the inclusion into a box is crude but at least it will
always return results identical to any actual desired inclusion.
Best wishes,
Taco
> On 28 Jan 2020, at 16:51, Pablo Rodriguez <oi...@gmx.es> wrote:
>
> Dear list,
>
> I have to check whether an external PDF document is portrait or
> landscape (in order to manipulate it in different ways).
>
> From what I understand of grph-inc.mkiv, I came with the following sample:
>
> \unprotect
> \def\figureXSize{\clf_figurestatus{width}{}}
> \def\figureYSize{\clf_figurestatus{height}{}}
> \protect
>
> \setupexternalfigures[location=default]
> \starttext
> \getfiguredimensions[cow.pdf]
> \figuresize\\
> \figurelabel\\
> \figureXSize\\
> \figureYSize\\
> \ifnum\figureXSize<\figureYSize portrait\else landscape\fi
> \stoptext
>
> I feel bad of abusing the ConTeXt source in such a miserable way. But
> I’m afraid this is the best I can.
>
> Is there no standard way to check portrait or landscape on a given
> figure? A conditional for that would be useful.
>
> At least, I would like to know how to get image dimension numbers
> suitable to be deployed with \ifnum.
>
> Many thanks for your help,
>
> Pablo
> --
> http://www.ousia.tk
> ___________________________________________________________________________________
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> ___________________________________________________________________________________
Taco Hoekwater
Elvenkind BV
___________________________________________________________________________________
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Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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