From: "Peter Münster" <pmlists@free.fr>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: width/height in figure converter (was: t-degrade.tex)
Date: Tue, 31 Jul 2012 17:04:11 +0200 [thread overview]
Message-ID: <87haso6kgk.fsf@micropit.couberia.bzh> (raw)
In-Reply-To: <877gtpv5lk.fsf@micropit.couberia.bzh> ("Peter =?utf-8?Q?M?= =?utf-8?Q?=C3=BCnster=22's?= message of "Fri, 27 Jul 2012 12:52:23 +0200")
On Fri, Jul 27 2012, Peter Münster wrote:
> Does it make sense, to port http://modules.contextgarden.net/t-degrade
> to mkiv, or is there already an existing solution in ConTeXt to
> downsample jpeg-images on the fly?
I've played a bit with the converters:
--8<---------------cut here---------------start------------->8---
\startluacode
figures.converters["jpg"] = {
["lowres.jpg"] = function(oldname,newname,resolution)
os.execute"something"
print(table.serialize(figures.current()))
end
}
\stopluacode
\starttext
\externalfigure[hacker][width=0.5\textwidth, conversion=lowres.jpg]
\stoptext
--8<---------------cut here---------------end--------------->8---
2 questions:
- How can I get the width and/or the height of the figure inside the
function? "0.5\9extwidth " is not very useful on the lua-side...
- How can I specify a sub-directory where to place the converted images?
(not so important, just to avoid cluttering the current directory)
TIA for any help,
--
Peter
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next prev parent reply other threads:[~2012-07-31 15:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-27 10:52 t-degrade.tex Peter Münster
2012-07-31 7:22 ` t-degrade.tex Jan Kula
2012-07-31 8:32 ` t-degrade.tex luigi scarso
2012-07-31 15:04 ` Peter Münster [this message]
2012-07-31 22:36 ` t-degrade.tex (solved) Peter Münster
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