Re: [NTG-context] OCProperties (mkiv)

1 May 2011


      Am 01.05.2011 13:43, schrieb Peter Rolf:
...
Am 01.05.2011 13:14, schrieb Peter Rolf:
...
Hi Hans,
using the 'Report PDF syntax issues'-preflight in Acrobat9 gives a
warning about an 'Unexpected value for this key'.
I used 'pdf-x4p.mkiv' from /texmf-context/tex/context/test/ as test file.
Probably just a warning about a redundancy (see 'PDF Reference, version
1.7.pdf', p376), setting 'BaseState /ON' in combination with '/ON [
whatever] /OFF [whatever]'.
Removing 'BaseState /ON' results in a flawless PDF.
... but results in a
'Optional content configuration dictionary has no BaseState entry'
when preflighting PDF/X-4p.
Maybe setting 'BaseState' to 'Unchanged' would be an option here, but
the note in the reference says:
"If BaseState is present in the document's default configuration
dictionary, its value must be ON."
What a mess!
I think it's better to ignore the preflight warning about BaseState...
I was stubborn and found the culprit. The value simply has to be '\ON'
and not '\On'. That's all.

[lpdf-ren.lua]

local function flushtextlayers()
    if viewerlayers.supported then
        if pagelayers then
            pdfflushobject(pagelayersreference,pagelayers)
        end
        for i=1,#cache do
            local ci = cache[i]
            pdfflushobject(ci[1],ci[2])
        end
        if textlayers and #textlayers > 0 then -- we can group them if
needed, like: layout
            local d = pdfdictionary {
                OCGs = textlayers,
                D    = pdfdictionary {
                    Name      = "Document",
                    Order     = (viewerlayers.hasorder and textlayers)
or nil,
                    ON        = videlayers,
                    OFF       = hidelayers,
                    BaseState = pdfconstant("ON"),
                },
            }
            lpdf.addtocatalog("OCProperties",d)
            textlayers = nil
        end
    end
end
...
...
Regards, Peter
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________