May 2012 - ntg-context - NTG Mailing Lists

drawarrow and transparency
by Alan BRASLAU 05 May '12

05 May '12

I have a MetaPost question concerning drawarrow withtransparency (or any other compound object). Is there some clever way to achieve uniform transparency for a compound object? For example, in the minimal example below, how can one obtain a transparent arrow without getting an X-ray vision of the arrowhead? \starttext \startMPpage drawarrow origin--(1cm,0) withtransparency(1,.5) ; drawarrow origin--(0,1cm) withtransparency(1,.5) ; \stopMPpage \stoptext Alan

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Non-Printing PDFs with ConTeXt
by Malte Stien 04 May '12

04 May '12

Hi all, Is there a way I can get ConTeXt to produce PDFs that are not-printable? Just as a background to my question: This is not about copyright. Rather, I am using ConTeXt to produce quality process documents. The quality management system requires that all quality process documents be "controlled", that is one must prevent folks from printing copies of their own that then keep floating around the place and cannot be retracted when a new version of the quality process document is issued. Hence, I am aiming for a paper-less scenario where everyone reads the documents on screen. Therefore, I would like to make printing impossible, or at least hard. The only one who should be able to print the document is the Document Manager; maybe the documents could be encrypted (PDF supports that, I believe), such that the Document Manager can print them knowing the password. So far, I have only seen Word and Acrobat Distiller being able to do this. Is there a way I can setup ConTeXt to do this? Or are there some command line tools, that can do that after the PDF has been produced? Any hints would be great. Thank you, Malte.

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Wiki - results differ?
by Procházka Lukáš Ing. - Pontex s. r. o. 04 May '12

04 May '12

Hello, Wiki and a file processed on a local computer give different results - - please compare "http://wiki.contextgarden.net/Command/doif..." and the example attached: ---- \starttext \ctxlua{test = true} Test is \ctxlua{commands.testcase(test)}{True}{False}. \ctxlua{test = false} Test is \ctxlua{commands.testcase(test)}{True}{False}. \stoptext ---- The result should be: " Test is True. Test is False. " which works fine on my computer. But wiki shows (wrongly): " Test is TrueFalse. Test is TrueFalse. " although the same code is used in the example: ---- <context source="yes" text="Gives:"> \starttext \ctxlua{test = true} Test is \ctxlua{commands.testcase(test)}{True}{False}. \ctxlua{test = false} Test is \ctxlua{commands.testcase(test)}{True}{False}. \stoptext </context> ---- Any idea why both results differ? And how to make wiki show the good result? Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

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\inputif(file)exist(s)
by Procházka Lukáš Ing. - Pontex s. r. o. 04 May '12

04 May '12

Hello, just a quick question - is there a command like "\inputif(file)exist(s)", which will \input a file if it exists, i.e. with no error if it doesn't? TIA. Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

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Bug with linenumbering
by Aditya Mahajan 03 May '12

03 May '12

Hi, Line numbering does not respect the parameters given with \startlinenumbering. For example: \definelinenumbering [test] \starttext \startlinenumbering[test][color=blue,align=flushright,distance=0.5em] \input knuth \stoplinenumbering \page \setuplinenumbering [test][color=blue,align=flushright,distance=0.5em] \startlinenumbering[test] \input knuth \stoplinenumbering \stoptext Aditya

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[***SPAM***] Indentation for beginner
by hwitloc＠gmail.com 03 May '12

03 May '12

I am putting together a needed resume and learning context at the same time. What I want is or should be simple, but I am not familiar with which options to set. I am using the following, because I don't want to use any margin for some forgotten reason, just text area. I am currently using this: (abbreviated) % % relevant snippet % \definedescription[rsection][location=left,width=3.0cm,headstyle=\sc] \rsection{Education} \startitemize[5,packed] \item bozo the clown \item is here today. \stopitemize \rsection{Work\\Experience} \startitemize[5,packed] \item UCLA BoA \item LMU BSCS \stopitemize ... % % end snippet % The above is fine, except that I want the items to be level with the "resume section header". As it is now the items come out below the resume section description, like this: EDUCATION * bozo the clown * is here today WORK EXPERIENCE * UCLA BoA * LMU BSCS --------------------------------------------- % Whereas I want it to be like this: EDUCATION * bozo the clown * is here today WORK * UCLA BoA EXPERIENCE * LMU BSCS % above or below WORK EXPERIENCE * UCLA BoA * LMU BSCS % In other words I want the first item of an itemization to line up with the resume section description header's first or last line. I am thinking it might be to set someing in the "before", "after", or "command" or to set maybe one to /nop out whatever is there currently. I don't know how to find out what commands these default to, if any, but even if I knew at this point, I would still be stuck. Though I'd like to know about that to. Any advice on this would be appreciated of how to get this desired format would be much appreciated. Regards, hwitloc

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MetaPost circular_shade Command
by Troy Henderson 03 May '12

03 May '12

The command circular_shade(fullcircle scaled 4in,0,white,red); in MetaPost does not act as I think it should. It performs a gradient fill starting at the center of the circle by filling this center in white (which is expected), and changing the color as the radius/diameter changes (which is also expected), but the final radius appears to have a RGB color of about (1,0.29,0.29) which is not red (thus is unexpected) since red = (1,0,0). However, the command circular_shade(unitsquare shifted (-0.5,-0.5) scaled 4in,0,white,red); creates a gradient filled square whose center is white and whose northeast, northwest, southwest, and southeast corner are red (as somewhat expected) and thus whose east, north, west, and south tip are about (1,0.29,0.29) like the circle. I would appreciate an explanation of why this acts like it does, and (more importantly), let me know how I can get a gradient filled circle whose center gets filled with a RGB color c and outer radius color d. Clearly, circular_shade(fullcircle scaled 4in,0,c,d); does not do this. Thanks in advance, Troy Henderson

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Background on the 1st page only, page numbering from the 2nd page
by Procházka Lukáš Ing. - Pontex s. r. o. 02 May '12

02 May '12

Hello, how to specify the page background for the first page only and how to start page numbering from the second page? Here's my trial: ---- \defineoverlay[Bkg][{\externalfigure[cow]}] \setupbackgrounds[paper][background=Bkg] %\setuppagenumbering[state=2] \starttext \dorecurse{5}{\input knuth} \stoptext ---- - The background is on all pages, so is the page numbering. Any ideas? Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

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Problem with \inmargin on \item lines
by Malte Stien 02 May '12

02 May '12

Hi everyone, I am experiencing a problem with \inmargin{some text} in \itemized lists. I am using them a lot in my documents, and it is kind of annoying. It appears that if one uses the \inmargin macro just prior to the \item macro, the in-margin text is typeset against the previous line, not the line with the \item. Minimal example. \starttext \startitemize \item This is just a normal completely innocent paragraph against which one will be able to judge the amount of indentation of the next paragraph. \inmargin{Duck}\item This paragraph has a duck inmargin comment \stopitemize \stoptext That seems fair enough and even makes sense on some level. If however, one reverses the two macros, like so: \item\inmargin{Duck} This paragraph has a duck inmargin comment the leading space just after the closing brace is actually printed. I take this to be a bug, or is this by design? The only way I can around this is to not use a space, like so: \item\inmargin{Duck}This paragraph has a duck inmargin comment But I don't find that to be a satisfying solution. After all I am using ConTeXt because I am a bit pedantic about text, even the source code in this case. Regards, Malte.

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Should command `\setnumber' print number in text?
by Vladimir Lomov 01 May '12

01 May '12

Hello, I faced with following behavior of `\setnumber' command, consider the example: <example file="ex1.tex"> \setupbodyfont[computer-modern-unicode,12pt] \definenumber[course] \setnumber[course]{3} \starttext Hello. \stoptext </example> Processing by context (ConTeXt ver: 2012.04.26 22:27 MKIV fmt: 2012.4.28 int: english/english) I get PDF with number 3 typeset on line above Hello. Is it expected behavior? If yes, how can I increase/set value for "number"-command (counter) then? P.S. I tried with commented `\setupbodyfont', all is ok. Is it mean that command is deprecated? --- WBR, Vladimir Lomov -- You worry too much about your job. Stop it. You are not paid enough to worry.

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