From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/83892 Path: news.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: Feature Request: define colour in relation to existing colour Date: Wed, 21 Aug 2013 14:10:47 +0200 Message-ID: <5214AE47.7000405@wxs.nl> References: <52148081.8070101@wxs.nl> <20130821111100.GC18239@homerow> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; Format="flowed" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1377087088 13945 80.91.229.3 (21 Aug 2013 12:11:28 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 21 Aug 2013 12:11:28 +0000 (UTC) To: ntg-context@ntg.nl Original-X-From: ntg-context-bounces@ntg.nl Wed Aug 21 14:11:32 2013 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([5.39.185.229]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VC7G8-0004g1-4j for gctc-ntg-context-518@m.gmane.org; Wed, 21 Aug 2013 14:11:32 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id EABA710204; Wed, 21 Aug 2013 14:10:23 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id zNujVQG+9syX; Wed, 21 Aug 2013 14:10:21 +0200 (CEST) Original-Received: from balder.ntg.nl (localhost [IPv6:::1]) by balder.ntg.nl (Postfix) with ESMTP id 4300D10208; Wed, 21 Aug 2013 14:10:21 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 73B2210208 for ; Wed, 21 Aug 2013 14:10:19 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id hBbdyL5uGHsM for ; Wed, 21 Aug 2013 14:10:09 +0200 (CEST) Original-Received: from filter3-utr.mf.surf.net (filter3-utr.mf.surf.net [195.169.124.154]) by balder.ntg.nl (Postfix) with ESMTP id 437B610204 for ; Wed, 21 Aug 2013 14:10:09 +0200 (CEST) Original-Received: from smtp.ziggozakelijk.nl (D57D1DA2.static.ziggozakelijk.nl [213.125.29.162]) by filter3-utr.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with ESMTP id r7LCBBoZ015399 for ; Wed, 21 Aug 2013 14:11:15 +0200 X-Default-Received-SPF: pass (skip=loggedin (res=PASS)) x-ip-name=10.100.1.103; Original-Received: from [10.100.1.103] (unverified [10.100.1.103]) by pragma-net.nl (SurgeMail 6.3c2) with ESMTP id 2313-1713362 for ; Wed, 21 Aug 2013 14:11:11 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8 In-Reply-To: <20130821111100.GC18239@homerow> X-Authenticated-User: hagen@controller-9 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=213.125.29.162; country=NL; region=15; city=Zwolle; latitude=52.5058; longitude=6.0858; http://maps.google.com/maps?q=52.5058,6.0858&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 08KfobcNo - 0b0a21ee09ba - 20130821 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) on 195.169.124.154 X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.14 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ntg-context-bounces@ntg.nl Original-Sender: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:83892 Archived-At: On 8/21/2013 1:11 PM, Marco Patzer wrote: > On 2013=9608=9621 Hans Hagen wrote: > >> On 8/21/2013 2:25 AM, Thangalin wrote: >>> Hi, >>> >>> What would it take to extend \definecolor so that: >>> >>> \definecolor[ColourA][ColourB][t=3D0.5, a=3D1] >>> >>> defines a new colour (ColourB) based on an existing colour (ColourA)? >>> >>> I know that \definespotcolor[ColourA][ColourB][t=3D0.5, a=3D1] works, b= ut >>> it seems like \definecolor would also be a natural fit. >> >> hm, afaik no one ever needed that (normally one defines colors once >> on top of the document and there are seldom many of them) >> >> anyhow, as general inheritance is pretty fuzzy i.e. cloning a spot >> color and changing some rgb component or cloning a cmyk color and >> setting rgb components it will not be a feature of definecolor >> >> I've added \defineprocesscolor that cna be used as follows: > > Are you sure it's a good idea to add another colour definition > mechanism? Then we have > > \definecolor the one i use > \defineglobalcolor the one no-one uses > \definenamedcolor just a sort of synonym one might forget about (compatibility) > \definespotcolor > \definemultitonecolor special color spaces > \defineprocesscolor the one users might use > This is getting a little confusing, in my opinion. If the only > difference between \definespotcolor and \defineprocesscolor is the > colour space check, can't that be dealt with using a key-value > setting? some are made for speed (when one changes colors a lot in local / = grouped cases) > Probably a little late to discuss this, but I also don't see why > \definespotcolor got its own command. A simpler approach: If two > arguments to \definecolor are provided you define a colour, if three > arguments are provided you define a tint of a colour. well, more checking etc .. also some historic reasons as spot colors are = rather special in the sense that they have to built on others .. seldom = used anyway i guess ----------------------------------------------------------------- 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 t= he Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-cont= ext webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________= ________