February 2018 - ntg-context - NTG Mailing Lists

Presentation sections identified by color and mark
by jmmora＠us.es 04 Feb '18

04 Feb '18

Hi, I'm starting a presentation with ConTeXt. I'd like to visually differentiate each section, so I've come up with two complementary approaches to do that: * Use a different color palette for each section, and * Mark the progress bar to indicate the start of each section. I've done an small example (at the end) but: * Last Subject of a Topic take color from next Topic. (e.g. "Some greenB") * I don't like interactionBar styles provided. I'd like something like: |-----|-|-----|--|------ (horizontal line and a vertical line at the begin of each section and a vertical line of different color for current position) other option I like: ######%%@@@@@@HHH&&&&&&& (each letter represents a color. It's a bar with colors marking size of text. So it's a series of color rectangles with colors for each section and a vertical line for current position) The main problems are: * How can I pass the first page of each section to MetaPost? * How can I protect background color of SomeGreenB to be green and not blue? Thanks. -------8< ----- Start example \usemodule[present-original] \usemodule[present-common] \definecolor [PageColor] [black] \definecolor [BackgroundColor] [s=.85] \definecolor [OrnamentColor] [r=.75] \definecolor [PositionColor] [s=.55] \defineoverlay [PageShape][\useMPgraphic{PageShape}] \startuseMPgraphic{PageShape} StartPage ; path p ; pair pa, pb ; numeric len ; color contrastcolor ; numeric i; numeric sections[]; % simulated load of sections sections[0] := 1; sections[1] := 4; sections[2] := 6; pickup pencircle scaled 5pt ; p := (100pt,100pt)--(500pt,100pt); draw p withcolor \MPcolor{OrnamentColor} ; contrastcolor = \MPcolor{PositionColor} ; if (RealPageNumber > 0) and (NOfPages > 0): len := 1/NOfPages ; i := 0; forever : exitunless known sections[i]; pa := point(0+len*sections[i]) of p ; draw (pa+(0,10pt))--(pa+(0,-10pt)) withcolor \MPcolor{OrnamentColor} ; i := i + 1; endfor ; pa := point (0+len*RealPageNumber) of p ; %draw (pa+(0,10pt))--(pa+(0,-10pt)) withcolor contrastcolor ; draw pa withpen pencircle scaled 10pt withcolor contrastcolor ; fi ; StopPage ; \stopuseMPgraphic \setupbackgrounds [text] [background={PageShape}] \starttext \setupdocument[title={Title},location={Place}] \startdocument \definecolor[BackgroundColor][r=0,g=.7,b=0] \startTopic[title={Topic Green}] Some text A \startSubject[title={Some green 1}] more text B \stopSubject \startSubject[title={Some green 2}] more text B \stopSubject \stopTopic \definecolor[BackgroundColor][r=0,g=0,b=0.7] \startTopic[title={Topic Blue}] Some text C \startSubject[title={Some blue}] more text D \stopSubject \stopTopic \definecolor[BackgroundColor][r=.7,g=0,b=0] \startTopic[title={Topic Red}] Some text E \startSubject[title={Some Red}] more text F \stopSubject \stopTopic \stopdocument \stoptext

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Question about an environment
by Fabrice Couvreur 04 Feb '18

04 Feb '18

Hello, How to make the first item on the baseline of the numbering as in the first exercise ? Thanks. Fabrice \defineframed [ACFRAME] [frame=off, boffset=0pt, width=fit, align=flushleft, location=low, background=color, backgroundcolor=MyColorA] \defineframed [EXFRAME] [frame=off, offset=0pt, location=low, width=\struttotal, background=color, backgroundcolor=black, foregroundcolor=white, forgroundstyle=bold] \defineprocessor[ACPROCESSOR][command=\EXFRAME] \defineconversionset[ACCONVERSION][][ACPROCESSOR->n] \defineenumeration [ex] [text=, width=fit, numberconversionset=ACCONVERSION, alternative=serried, number=yes] \starttext \startex \input ward \stopex \startex \startitemize[n] \item One \item Two \item Three \stopitemize \stopex \stoptext

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text on every page howto
by dr. Hans van der Meer 02 Feb '18

02 Feb '18

I would like to put a (rotated) text on every page in the margin. Please, how do I accomplish this? Hans van der Meer

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Django: using ConTeXT mkiv to output PDF
by kaddour kardio 02 Feb '18

02 Feb '18

i have a small Django app <https://bitbucket.org/kaddourkardio/kardiology> to manage my patients data, and use LaTeX to output reports. It consists un a *parent* model called Patients and child models Consultation , StressEcho and so on. With LaTex this works without problems def courrier_pdf(request, pk2, pk1): entry = Courrier.objects.get(pk=pk2) source = Patient.objects.get(pk=pk1) context = dict({'courrier': entry, 'patient': source})#buffer = BytesIO()template = get_template('courrier/courrier.tex') rendered_tpl = template.render(context, request).encode('utf-8')#Python3 only. For python2 check out the docs!with tempfile.TemporaryDirectory() as tempdir: # Create subprocess, supress output with PIPE and # run latex twice to generate the TOC properly. # Finally read the generated pdf. for i in range(2): process = Popen( ['xelatex', '-output-directory', tempdir], stdin=PIPE, stdout=PIPE, ) process.communicate(rendered_tpl) with open(os.path.join(tempdir, 'texput.pdf'), 'rb') as f: pdf = f.read() r = HttpResponse(content_type='application/pdf') r.write(pdf)return r i tried with this view in order to use ConTeXT but without success def courrier_mkiv(request, pk2, pk1): entry = Courrier.objects.get(pk=pk2) cource = Patient.objects.get(pk=pk1) context = dict({'courrier': entry, 'patient': cource})# buffer = BytesIO()template = get_template('courrier/courrier.mkiv') rendered_tpl = template.render(context, request).encode('utf-8')with tempfile.TemporaryDirectory() as tempdir: process = Popen(['context', '--result', tempdir], stdin=PIPE, stdout=PIPE, ) process.communicate(rendered_tpl) with open(os.path.join(tempdir, 'textput.pdf'), 'rb') as f: pdf = f.read() r = HttpResponse(content_type='application/pdf') r.write(pdf)return r My feeling is that the problem is in the workspace since i get logfiles in the root of my app Here is log file from ConTeXT: open source > level 1, order 1, name '/home/kaddour/context/tex/texmf- context/tex/context/base/mkiv/cont-yes.mkiv' system > system > ConTeXt ver: 2018.01.04 17:37 MKIV beta fmt: 2018.1.4 int: english/english system > system > 'cont-new.mkiv' loaded open source > level 2, order 2, name '/home/kaddour/context/tex/texmf- context/tex/context/base/mkiv/cont-new.mkiv' close source > level 2, order 2, name '/home/kaddour/context/tex/texmf- context/tex/context/base/mkiv/cont-new.mkiv' system > files > jobname 'tmpy82c5j7i', input '/tmp/tmpy82c5j7i', result 'tmpy82c5j7i' fonts > latin modern fonts are not preloaded languages > language 'en' is active tex error > tex error on line 8 in file /home/kaddour/context/tex/texmf- context/tex/context/base/mkiv/cont-yes.mkiv: ! I can't find file `/tmp/tmpy82c5j7i'. l.8 } I tried this in my view os.chdirw(tempdir) just before process without success. My guess is that ConTeXT option --result= does not behave exactly like LaTeX's -output-directoryAny help is welcome i really need ConTeXT for my work and this problem is driving me mad! -- Dr YAHYAOUI Mohamed Kaddour, cardiologue -- Clinique KARDIA.

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\setvariables and database module
by Otared Kavian 01 Feb '18

01 Feb '18

Hi all, I need to create a document using a database and the \setvariables command (which I understood thanks to Wolfgang Schuster). Everything works fine except that using the approach below I need to change the entries in the database by enclosing each entry between a pair of braces {}, because otherwise the macro I have imagined does not work as expected. In the example below the first line of entries is treated correctly, while the second one is understood wrongly by my macro \maketalk defined below in the minimal example. It is indeed possible, in theory, to change the database file so that each entry is enclosed in a pair of braces, but I would like to avoid that mainly because I am not the one who produces nor maintains that file and I want to avoid modifying a copy of that file myself. How can I change my approach to this problem in order to achieve what is needed? Many thanks for any hint. Best regards: OK % begin database-command.tex \usemodule[database] \starttext \startbuffer[pagetalk] \starttabulate[|f{\bi}l|p|][before=]% \NC Speaker \EQ \goto{{\sc \getvariable{talk}{speakername}}}[fig:\getvariable{talk}{speakername}] \NC\NR \NC Title \EQ \getvariable{talk}{title} \NC\NR \stoptabulate \startplacefigure[number=no] \externalfigure[\getvariable{talk}{picture}] \stopplacefigure \page \stopbuffer \setvariable{talk}{set}{\getbuffer[pagetalk]} \define[3]\maketalk{% \setvariables[talk]% [speakername={#1}, title={#2}, picture={#3}, ]} \defineseparatedlist[seplisttalk] [separator={;}, first=\maketalk ] \startseplisttalk {Hacker} ; {Up to date hacking} ; {hacker.jpg} % this works fine Hacker ; Up to date hacking ; hacker.jpg % this does not work: the macro takes only the three characters H a c \stopseplisttalk \stoptext % end database-command.tex

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