Jack Steyn schrieb am 30.04.2020 um 16:36:
If I want to get the paper width and height to use in some Lua code, I
can use:
local paperwidth, paperheight =
backends.pdf.codeinjections.getpagedimensions()
But what if I want to get the page width and height? That is, the width
and height of the first argument in the two-argument version of
\setuppapersize. Does anyone know how I can obtain these using Lua?
You can use tex.dimen[...] or tex.dimen.<NAME> but all values are in
scaled points.
\setuppapersize[A5][A4]
\setuplayout[location=middle]
\showframe
\starttext
\startluacode
local pagedimensions = {
"paperwidth",
"paperheight",
"printpaperwidth",
"printpaperheight",
}
context.starttabulate()
for _, pagedimension in next, pagedimensions do
context.NC()
context.Word(pagedimension)
context.NC()
context((number.tomillimeters(tex.dimen[pagedimension],"%.F%s")))
context.NC()
context.NR()
end
context.stoptabulate()
\stopluacode
\stoptext
Wolfgang
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