Re: [NTG-context] checking whether file is landscape or portrait

28 Jan 2020


      On Tue, 28 Jan 2020 16:51:35 +0100
Pablo Rodriguez  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.
Use \ifdim to compare dimensions.

\setupexternalfigures[location=default]

\starttext

\getfiguredimensions[mill.png]

\ifdim\figurewidth>\figureheight
  landscape%
\else
  portrait%
\fi

\getfiguredimensions[cow.pdf]

\ifdim\figurewidth>\figureheight
  landscape%
\else
  portrait%
\fi

\stoptext

Wolfgang

Re: [NTG-context] checking whether file is landscape or portrait

Wolfgang Schuster