From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/30048 Path: news.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: metafun & \sometxt: should black be "black" or "textcolor"? Date: Mon, 07 Aug 2006 00:02:15 +0200 Message-ID: <44D666E7.5000400@wxs.nl> References: <6faad9f00608051932ie703df0j94c670536a0f156f@mail.gmail.com> <44D5ADBE.3010809@elvenkind.com> <6faad9f00608060426g7d389fb4k803f2725f02ceef3@mail.gmail.com> <44D5FEBB.8020808@elvenkind.com> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1154901775 13524 80.91.229.2 (6 Aug 2006 22:02:55 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 6 Aug 2006 22:02:55 +0000 (UTC) Original-X-From: ntg-context-bounces@ntg.nl Mon Aug 07 00:02:42 2006 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from ronja.vet.uu.nl ([131.211.172.88] helo=ronja.ntg.nl) by ciao.gmane.org with esmtp (Exim 4.43) id 1G9qhW-0000Le-IO for gctc-ntg-context-518@m.gmane.org; Mon, 07 Aug 2006 00:02:26 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 264F41FFE2; Mon, 7 Aug 2006 00:02:26 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 25784-01; Mon, 7 Aug 2006 00:02:20 +0200 (CEST) Original-Received: from ronja.vet.uu.nl (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id BF4961FFCC; Mon, 7 Aug 2006 00:02:20 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 956871FFCC for ; Mon, 7 Aug 2006 00:02:19 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 25723-02 for ; Mon, 7 Aug 2006 00:02:18 +0200 (CEST) Original-Received: from mail.pragma-ade.net (dsl-083-247-100-017.solcon.nl [83.247.100.17]) by ronja.ntg.nl (Postfix) with SMTP id B99A21FFAA for ; Mon, 7 Aug 2006 00:02:18 +0200 (CEST) Original-Received: from [10.100.1.102] (unverified [10.100.1.102]) by controller-1 (SurgeMail 3.5b3) with ESMTP id 31760 for ; Mon, 07 Aug 2006 00:02:18 +0200 User-Agent: Thunderbird 1.5.0.5 (Windows/20060719) Original-To: mailing list for ConTeXt users In-Reply-To: <44D5FEBB.8020808@elvenkind.com> X-Server: High Performance Mail Server - http://surgemail.com r=-274017400 X-Authenticated-User: hagen@controller-1 X-Virus-Scanned: amavisd-new at ntg.nl X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.7 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl X-Virus-Scanned: amavisd-new at ntg.nl Xref: news.gmane.org gmane.comp.tex.context:30048 Archived-At: Taco Hoekwater wrote: > Hi Mojca, > > Mojca Miklavec wrote: > >> But the other \sometxt was indeed red - withcolor seems to work, but >> only conditionally. And I have some weird examples of two texts one >> after another. In some cases (if something else is drawn inbetween and >> a color changed twice), then the second text will be black. But it's >> quite unpredictable (that one might even be bug in my code, so I don't >> want to complain before I have an example). >> > > Ok, I looked into this again, and I was definately wrong. > > The actual problem appears to be that metapost does not write a > color switch for 'black' when it appears at the start of a file, > it simply assumes the start color is black. This could be > considered a bug in MetaPost or a missing feature in ConTeXt > (i have not decided yet :-)). > > Quick fix: You can start your MP code with an explicit color > initialization. > > \startMPcode > special "0 setgray"; > ...... > \stopMPcode > > > A hack, I know. MetaPost should be able to distinguish between > draw p > and > draw p withcolor (0,0,0) > but currently it can't (because the structure is initialized > as (0,0,0)). It is not quite a bug either, because there may > well be MP code out there that depends on this. > In fact, probably code by Knuth, Hobby, Jacko, and Hans ;-) > > in meta-pdf.tex: \chardef\blackoutMPgraphic\plusone \def\finishMPgraphic {\stopMPresources \egroup \setbox\scratchbox\vbox {\forgetall \hbox {\PDFcode{q \MPxscale\space 0 0 \MPyscale\space \MPxoffset\space \MPyoffset\space cm}% \ifcase\blackoutMPgraphic\or\PDFcode{0 g 0 G}\fi \lower\MPyshift\box\scratchbox % unscaled shift \PDFcode{Q}}}% \ht\scratchbox\MPheight \wd\scratchbox\MPwidth \dp\scratchbox\zeropoint\relax \dopackageMPgraphic\scratchbox \egroup \endinput} \starttext \color[red]{\startMPcode draw fullcircle scaled 5cm ; draw btex test etex ; \stopMPcode red} \startreusableMPgraphic{test} draw fullcircle scaled 5cm ; draw btex test etex ; \stopreusableMPgraphic \color[red]{red \reuseMPgraphic{test} red} \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------