June 2012 - ntg-context - NTG Mailing Lists

\box0 to Lua
by Procházka Lukáš Ing. - Pontex s. r. o. 18 Jun '12

18 Jun '12

Hello, how to call "\box0" and "\hbox to3cm{abc}" by Lua? ---- \startluacode context[[\box0]] % OK but a "nicer" way preferred, so keep on trying - context.box(0) % Error context.box{0} % Error context.box"0" % Error context.hbox({to = "cm"}, "abc") % Error \stopluacode ---- TIA. 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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Refreshing (synchronizing) values between Lua variables and TeX registers
by Jaroslav Hajtmar 18 Jun '12

18 Jun '12

Hello ConTeXist and Lua experts Is there any way to refresh values between the values stored in Lua code and TeX registers? I need to evaluating the values of TeX registers (counters, dimensions, height of boxes, etc.) during the Lua cycle. I would like in the cycle read values from the TeX registers and write back there so that all values were always synchronized. Or I need advice on how to proceed. Most of my Lua code is in a separate file in Lua function. Is there a universal way to "jump out of cycle" to TeX synchronize all values between TeX registers and Lua values (even at the cost of slowing down) and then go back into the cycle and continue? I do not write cycles using the TeX macro language, but so far I'm failing in way around it. What I need to I knowing or What I need to learn? Thanx Jaroslav Hajtmar The minimal example shows (maybe) what I mean: \newcount\testcount \def\countrefresh{\directlua{tex.count.testcount = tex.count.testcount + 1}} \def\universalrefreshcommand{\directlua{-- ???}} \def\printdebuginfo{ \directlua{tex.sprint(': ',tex.count.testcount, " - ", "\\the\\testcount","\\par")} } \starttext Here values are not synchronized: \testcount=0 \startluacode local i=0 for i=1,5 do tex.sprint(i) tex.count.testcount = tex.count.testcount + 1 tex.sprint("\\printdebuginfo") end \stopluacode \blank[big] Here values of textcounter are synchronized: \testcount=0 \startluacode local i=0 for i=1,5 do tex.sprint(i) tex.sprint("\\countrefresh") tex.sprint("\\printdebuginfo") end \stopluacode \blank[big] Is there a universal way to "jump out of cycle" to TeX synchronize all values between TeX registers and Lua values (even at the cost of slowing down) and then go back into the cycle and continue? \testcount=0 \startluacode local i=0 for i=1,5 do tex.sprint(i) tex.count.testcount = tex.count.testcount + 1 tex.sprint("\\universalrefreshcommand") tex.sprint("\\printdebuginfo") end \stopluacode \blank[big] \stoptext

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labeltext assignment
by Philipp Gesang 18 Jun '12

18 Jun '12

Hi all, there appears to be something special about how the key-value list works with \setuplabeltext: ······································································· \setuplabeltext [ foo=bar, %% <- comma not allowed here? % foo=bar %% <- works ] \starttext \labeltext{foo} \stoptext ······································································· Normally the trailing comma causes no trouble, but here it won’t even compile. Best regards Philipp

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Deleting "-temp" files
by Aditya Mahajan 18 Jun '12

18 Jun '12

Hi, context --purgeall deletes all temporary files (i.e., files containing "-temp-"). In fact, I had requested this feature so that the filter module does not clutter the current directory with temporary files. However, there is a bug. ConTeXt deletes all files containg "-temp" (note the missing "-" at the end). So, $ touch A1-temperature.tex $ context --purgeall gives mtx-context | purged files: A1-temperature.tex AFAICS, mtx-context.lua is correct. It contains "-temp-" as expected. So, I don't know why files containing "-temp" are deleted. Aditya

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Can C-Pretty-Printing module for MKIV be installed through first-setup
by Jan Pohanka 17 Jun '12

17 Jun '12

Hello, I'd like to use C-Pretty-Printing module. As it is listed on http://modules.contextgarden.net I thought it should be installed by first-setup.sh --modules=all. Unfortunately this module is missing even all others are installed. best regards Jan -- Tato zpráva byla vytvořena převratnou poštovní aplikací Opery: http://www.opera.com/mail/

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outlines don't work?
by Erik Margraf 16 Jun '12

16 Jun '12

Dear list! I would like to use the "outline" feature of context. The following (hopefully minimal) example gives me <Nothing> as output ------------------- \starttext \setupcolors[state=start] \definelayer[L] \setupbackgrounds[page][background={L}] \startuseMPgraphic{PN} graphictext "Bla Bla" scaled 4 withcolor blue withfillcolor .7white withpen pencircle scaled 2pt; \stopuseMPgraphic \null\dontcomplain \setlayer[L]{\useMPgraphic{PN}} \stoptext ---------------- I saw a probably related post on this list on May, 30th. (subject "graphictext fails) Also, my .mpy file is empty. A .tex file and a .pdf is generated though My environment is as follows: OS: Debian AMD64 wheezy / sid Context: current version: 2012.06.13 23:46 (tried also some older versions, no difference) pstoedit: 3.60 (maybe some problems here?) Anything else of importance? Thanks in advance for any help or hint. Erik

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parameter setting
by Meer, H. van der 16 Jun '12

16 Jun '12

In order to be able to use attributes on xml-nodes freely, the following situations can arise: The foregroundcolor parameter gets a value: <node color="red"> correctly sets ..[foregroundcolor=\xmlatt{#1}{color}] color to red. However, in the next case the current foregroundcolor should be left as is, but reverts to black: <node> ..[foregroundcolor=] and is apparently reset to the general default. trying the following seemed the solution, but it does not work: ..[\doifnot{\xmlatt{#1}{color}}{\empty}{foregroundcolor=\xmlatt{#1}{color}}] giving in the log: {foregroundcolor=orange}' in line 16 (249>:) check > missing or ungrouped '=' after '\doifnot {}{} Putting the above \doif inside an \expanded{} does not alter the behaviour. How to accomplish leaving the parameter as is for an absent attribute? Hans van der Meer

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problem with xtable
by Meer, H. van der 16 Jun '12

16 Jun '12

Using \startxtable gives an error, whereas \startembeddedxtable does not. What is the cause, what is the difference? Hans van der Meer Error: Runaway argument? \xmlflush {test::4}\stopxtable \endgroup \stoptext ! File ended while scanning use of \buff_gobble. Working: \startxmlsetups xmlcommon:table \startembeddedxtable[ \xmlflush{#1} \stopembeddedxtable \stopxmlsetups Not working: \startxmlsetups xmlcommon:table \startxtable \xmlflush{#1} \stopxtable \stopxmlsetups Calling this with: \usemodule[hvdm-xml] % contains simple definitions for <table> <tr> <td> through \startxcell etc. \startxmlsetups test \xmlsetsetup{\xmldocument}{test}{test:*} \stopxmlsetups\xmlregistersetup{test} \startxmlsetups test:test \xmlflush{#1} \stopxmlsetups \startbuffer[test-1] <?xml version="1.0" encoding="UTF-8"?> <test> <table> <tr> <td>one</td> <td>two</td> </tr> </table> </test> \stopbuffer \starttext \xmlprocessbuffer{test}{test-1}{} \stoptext

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simpleslides is broken after texlive 2011 upgrading
by Zhiguang li 15 Jun '12

15 Jun '12

Hi All, The simpleslides can not work any more after texlive 2011 upgrading, here's the example.tex from slideslides \usemodule[simpleslides] [style=BigNumber] \setupTitle [ title={Title of the presentation}, author={Name of authors}, date={Date of presentation}, ] \starttext \placeTitle \SlideTitle {The first slide} Write whatever you want. \SlideTitle {The second slide} Continue writing. \stoptext And the error output is resolvers > modules > loaded: 'simpleslides-s-BigNumber' (/home/joshua/texmf/tex/context/third/simpleslides/simpleslides-s-BigNumber.tex simpleslides > loading Big Number style system > command \NormalHeight is already defined system > command \NormalWidth is already defined system > command \PictureFrameHeight is already defined system > command \PictureFrameWidth is already defined )) system > begin file example.tex at line 10 ! Undefined control sequence. system > tex > error on line 11 in file example.tex: Undefined control sequence ... 1 \usemodule[simpleslides] 2 [style=BigNumber] 3 4 \setupTitle 5 [ title={Title of the presentation}, 6 author={Name of authors}, 7 date={Date of presentation}, 8 ] 9 10 \starttext 11 >> \placeTitle 12 13 \SlideTitle {The first slide} 14 Write whatever you want. 15 16 \SlideTitle {The second slide} 17 Continue writing. 18 19 \stoptext 20 \placeTitle ...\usesimpleslidestitlestyleandcolor \c!style \c!color \simples... l.11 \placeTitle ? Test env: texlive-2011 + t-simpleslides-2012.02.14.zip Best regards, Zhiguang

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Testing the changing dimensions of boxes (in cycles) via Lua
by Jaroslav Hajtmar 15 Jun '12

15 Jun '12

Hello ConTeXist and Lua experts. In a my Lua project I need to determine the changing dimensions of the TeX \vbox through Lua. In ConTeXt cycle, it works fine, but in the Lua cycle does not change the dimensions of the box. What am I doing wrong? Thank you. Jaroslav Hajtmar Here is my minimal example: -------------------------------------------------------------------- \newdimen\lsize \def\contentofvbox{\input ward } \def\setmybox{\setbox0=\vbox{\hsize=\lsize \contentofvbox}} \starttext Height of box via ConTeXt (works fine): \setmybox \lsize=5cm \dorecurse{3}{% \lsize=\dimexpr(\lsize+7mm) \setmybox height of box: \the\ht0\par width of box: \the\wd0\par \box0\par } \page ... and Height of box via Lua (do not working): \setmybox \ctxlua{ tex.dimen.lsize=5*72.27*65536/25.4 for i=1, 3 do tex.dimen.lsize=tex.dimen.lsize+7*72.27*65536/25.4 context([[\setmybox]]) local heightbox=tex.box[0].height local widthbox=tex.box[0].width heightbox=(heightbox*2.84527559067*25.4)/(72.27*65536) widthbox=(widthbox*2.84527559067*25.4)/(72.27*65536) context([[height of box:]]..heightbox.."pt\\par") context([[width of box:]]..widthbox.."pt\\par") context([[\box0\par]]) end } \stoptext

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