From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Layers by native code vs. by Lua
Date: Tue, 25 Jan 2011 14:37:01 +0100 [thread overview]
Message-ID: <4D3ED1FD.4060602@wxs.nl> (raw)
In-Reply-To: <op.vpu7e1mitpjj8f@lpr>
On 25-1-2011 1:53, Procházka Lukáš Ing. - Pontex s. r. o. wrote:
> Hello,
>
> a weird thing happens when setting up layers - I'm getting different
> results depending on whether setup is performed by native Ctx code or by
> Lua:
>
> ---
> \setuppapersize[A4,landscape][A4,landscape]
> \setuplayout[page]
>
> \definelayer[T][x=10mm,y=0mm]
>
> \startuseMPgraphic{VerticalRule}
> draw (0,0)--(0,PaperHeight) withcolor red;
> \stopuseMPgraphic
>
> \startsetups S1
> \setlayer[T]{\useMPgraphic{VerticalRule}}
> \stopsetups
>
> \startluasetups S2
> \startluacode
> context.setlayer({"T"}, "\\useMPgraphic{VerticalRule}")
> \stopluacode
> \stopluasetups
>
> \starttext
> \setupbackgrounds[page][setups=S1,background={T}]
> \page[empty]
> \setupbackgrounds[page][setups=S2,background={T}]
> \page[empty]
> \stoptext
> ---
>
> Both setups (S1 and S2) should do the same - to draw a vertical line to
> the full height.
>
> The first case (S1) is OK - the line starts 10 mm from the top left
> corner of the page.
>
> The second case (S2) is somehow shifted - the line starts cca 13 mm from
> the top left corner of the page.
>
> What is the reason? And how to make Lua way give the same result?
lua setups are already lua so S2 should look different
\startsetups S1
\setlayer[T]{\useMPgraphic{VerticalRule}}
\stopsetups
\startluasetups S2
context.setlayer({"T"}, "\\useMPgraphic{VerticalRule}")
\stopluasetups
the problem is that setups=* does not know about this ... so you should
use:
\startsetups S3
\luasetup{S2}
\stopsetups
\starttext
\setupbackgrounds[page][setups=S1,background={T}]
\page[empty]
\setupbackgrounds[page][setups=S3,background={T}]
\page[empty]
\stoptext
I have to think about a solution for this.
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
___________________________________________________________________________________
next prev parent reply other threads:[~2011-01-25 13:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-25 12:53 Procházka Lukáš Ing. - Pontex s. r. o.
2011-01-25 13:37 ` Hans Hagen [this message]
2011-01-25 13:40 ` luigi scarso
2011-01-25 15:31 ` Hans Hagen
2011-01-25 15:43 ` Procházka Lukáš Ing. - Pontex s. r. o.
2011-01-25 18:05 ` Hans Hagen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4D3ED1FD.4060602@wxs.nl \
--to=pragma@wxs.nl \
--cc=ntg-context@ntg.nl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).