Hello Hans,
that's exactly what I've been looking for!
(And yes, I've asked one or more times, with a solution that seemed to me a bit "forced" or "non-clear", so the latest solution looks perfectly!)
Best regards,
Lukas
On Mon, 14 Aug 2017 16:55:09 +0200, Hans Hagen
On 8/14/2017 1:08 PM, Procházka Lukáš Ing. wrote:
Hello,
is there a way how to get the following info from a PDF file via Lua/Ctx API?:
- first: number of pages of the PDF,
- next: for each page: get width, height and orientation (portrait/landscape) or rotation (+90,+ 180, +270 or so) of i-th page.
this probably has come up several times now, anyway
\getfiguredimensions[test.pdf] \dorecurse {\noffigurepages} { \getfiguredimensions[test.pdf][page=#1] \figurenaturalwidth ,\figurenaturalheight,\figureorientation,\figurerotation\par }
in lua you can either use the img library (see luatex manual) or context helpers
local data = figures.push("foo.pdf") figures.identify() figures.check() figures.pop() inspect(data)
i'll add:
function figures.getinfo(name,page) if type(name) == "string" then name = { name = name, page = page } end if name.name then local data = figures.push(name) figures.identify() figures.check() figures.pop() return data end end
so that one can do
local n = "ms.pdf" local d = figures.getinfo(n)
if d then for i=1,d.used.pages do local p = figures.getinfo(n,i) if p then local u = p.used print(u.width,u.height,u.orientation) end end end
etc etc
-- Ing. Lukáš Procházka | mailto:LPr@pontex.cz Pontex s. r. o. | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS:nrpt3sn Bezová 1658 147 14 Praha 4 Mob.: +420 702 033 396