From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Paul Isambert <zappathustra@free.fr>
Subject: Re: Using \pdfnames and friends.
Date: Tue, 25 Jan 2011 17:26:20 +0100 [thread overview]
Message-ID: <4D3EF9AC.3030701@wxs.nl> (raw)
In-Reply-To: <4D3ED1BF.5080801@free.fr>
On 25-1-2011 2:35, Paul Isambert wrote:
> Answering myself: I should use:
>
> \ctxlua{lpdf.addtonames("EmbeddedFiles", lpdf.reference(22))
> \ctxlua{lpdf.addtocatalog("PageMode", lpdf.constant("UseOutlines"))}
>
> (Apparently I can't do that directly with \pdfbackendsetname/catalog,
> the second argument is taken as a string.)
> I hope that's the correct answer and not a hack.
There are mechanisms for embedding files, like
backends.codeinjections.embedfile(filename)
However, a nametree is not constructed (as with forms these are not
mandate, but with forms they are better be there due to initialization).
Anyhow, I added this now:
local function flushembeddedfiles()
if next(filestreams) then
local e = pdfarray()
for name, reference in next, filestreams do
if reference then
e[#e+1] = pdfstring(name)
e[#e+1] = reference -- already a reference
else
-- we can issue a message
end
end
lpdf.addtonames("EmbeddedFiles",pdfreference(pdfflushobject(pdfdictionary{
Names = e })))
end
end
lpdf.registerdocumentfinalizer(flushembeddedfiles,"embeddedfiles")
As with most of these things, it's best to use the interface and not
push things in the file directly as it might render existing
functionality ineffective. Examples are color related resources.
In a similar fashion Pagemode is not to be set directly. There is
\setupinteractionscreen
for this (with a low level lua setupcanvas variant). As some of the
parameters influence each other they are dealt with at another moment.
Also, some of the parameters are ignored or overloaded when a chosen
pdf/x standard has rules that concern them.
Hans
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next prev parent reply other threads:[~2011-01-25 16:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-25 11:29 Paul Isambert
2011-01-25 13:35 ` Paul Isambert
2011-01-25 13:38 ` luigi scarso
2011-01-25 14:52 ` Paul Isambert
2011-01-25 15:15 ` Aditya Mahajan
2011-01-25 16:07 ` luigi scarso
2011-01-25 16:26 ` Hans Hagen [this message]
2011-01-25 20:32 ` Paul Isambert
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