* Metafun textext()
@ 2013-01-10 11:48 Alan BRASLAU
2013-01-10 11:51 ` Aditya Mahajan
0 siblings, 1 reply; 7+ messages in thread
From: Alan BRASLAU @ 2013-01-10 11:48 UTC (permalink / raw)
To: mailing list for ConTeXt users
Metafun textext() has been changed in an attempt to be more efficient. However, this has a side effet that it now handles colors differently, among other things. The following example, intended to cause difficulties for the color blind, no longer works. Is this a bug or a feature?
\starttext
\startMPcode
picture T ;
T := thelabel(textext("I'm seeing double"),origin) ;
draw T withcolor green ;
draw T shifted (-1mm,1mm) withcolor blue ;
\stopMPcode
\stoptext
Alan
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^ permalink raw reply [flat|nested] 7+ messages in thread* Re: Metafun textext() 2013-01-10 11:48 Metafun textext() Alan BRASLAU @ 2013-01-10 11:51 ` Aditya Mahajan 2013-01-10 13:01 ` Alan BRASLAU 0 siblings, 1 reply; 7+ messages in thread From: Aditya Mahajan @ 2013-01-10 11:51 UTC (permalink / raw) To: mailing list for ConTeXt users On Thu, 10 Jan 2013, Alan BRASLAU wrote: > Metafun textext() has been changed in an attempt to be more efficient. > However, this has a side effet that it now handles colors differently, > among other things. The following example, intended to cause > difficulties for the color blind, no longer works. Is this a bug or a > feature? > > \starttext > \startMPcode > picture T ; > T := thelabel(textext("I'm seeing double"),origin) ; > > draw T withcolor green ; > draw T shifted (-1mm,1mm) withcolor blue ; > \stopMPcode > \stoptext Since the beginning of MkIV, colors in metapost labels need to be set at the ConTeXt end (Untested): T := thelabel(textext("\color[blue]{I'm seeing double}"), origin); Aditya ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Metafun textext() 2013-01-10 11:51 ` Aditya Mahajan @ 2013-01-10 13:01 ` Alan BRASLAU 2013-01-10 13:17 ` Mojca Miklavec ` (2 more replies) 0 siblings, 3 replies; 7+ messages in thread From: Alan BRASLAU @ 2013-01-10 13:01 UTC (permalink / raw) To: mailing list for ConTeXt users On Thu, 10 Jan 2013 06:51:50 -0500 Aditya Mahajan <adityam@umich.edu> wrote: > Since the beginning of MkIV, colors in metapost labels need to be set at > the ConTeXt end (Untested): > > T := thelabel(textext("\color[blue]{I'm seeing double}"), origin); > > Aditya I don't believe that this is true, but I am most likely wrong. Indeed "\blue text" has worked, but 'draw T withcolor blue;' *should* work as well. The processing of textext() has changed recently, it seems. \startMPcode label(textext("I'm seeing double"),origin) withcolor green ; label(textext("I'm seeing double"),(-1mm,1mm)) withcolor blue ; \stopMPcode DOES work. Of course, these are much simplified minimal examples of what I would like to do. Alan ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Metafun textext() 2013-01-10 13:01 ` Alan BRASLAU @ 2013-01-10 13:17 ` Mojca Miklavec 2013-01-10 13:18 ` Aditya Mahajan 2013-01-10 13:29 ` Alan BRASLAU 2 siblings, 0 replies; 7+ messages in thread From: Mojca Miklavec @ 2013-01-10 13:17 UTC (permalink / raw) To: mailing list for ConTeXt users On Thu, Jan 10, 2013 at 2:01 PM, Alan BRASLAU wrote: > On Thu, 10 Jan 2013 06:51:50 -0500 > Aditya Mahajan wrote: > >> Since the beginning of MkIV, colors in metapost labels need to be set at >> the ConTeXt end (Untested): >> >> T := thelabel(textext("\color[blue]{I'm seeing double}"), origin); >> >> Aditya > > I don't believe that this is true, but I am most likely wrong. Based on a snippet from mp-gnuplot (and agreeing with your point of view that it would be nice if it worked without the extra hassle) I tend to agree with Aditya (and I seem to remember that Hans implemented \colored[r=...,g=...,b=...] command exactly when this became a problem): % Returns an image with colored text according to current color % This only makes sense for mkiv text. Mkii is handled with \sometxt % and colors are working properly there. /.../ vardef gp_colored_mkiv_text(expr str) = % since withcolor doesn't work any more, we need to provide a workaround. save r, g, b; r = redpart gp_color_current; g = greenpart gp_color_current; b = bluepart gp_color_current; rawtextext("\colored[r=" & decimal(r) & ",g=" & decimal(g) & ",b=" & decimal(b) & "]{" & str & "}") enddef; Mojca ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Metafun textext() 2013-01-10 13:01 ` Alan BRASLAU 2013-01-10 13:17 ` Mojca Miklavec @ 2013-01-10 13:18 ` Aditya Mahajan 2013-01-11 0:01 ` Hans Hagen 2013-01-10 13:29 ` Alan BRASLAU 2 siblings, 1 reply; 7+ messages in thread From: Aditya Mahajan @ 2013-01-10 13:18 UTC (permalink / raw) To: mailing list for ConTeXt users On Thu, 10 Jan 2013, Alan BRASLAU wrote: > On Thu, 10 Jan 2013 06:51:50 -0500 > Aditya Mahajan <adityam@umich.edu> wrote: > >> Since the beginning of MkIV, colors in metapost labels need to be set at >> the ConTeXt end (Untested): >> >> T := thelabel(textext("\color[blue]{I'm seeing double}"), origin); >> >> Aditya > > I don't believe that this is true, but I am most likely wrong. Well, I think it was true in the beginning (as I remember a discussion from Mojca on how to handle labels differently in the gnuplot module), but clearly that is not the case now. > Indeed "\blue text" has worked, but 'draw T withcolor blue;' *should* work as well. > The processing of textext() has changed recently, it seems. > > \startMPcode > label(textext("I'm seeing double"),origin) withcolor green ; > label(textext("I'm seeing double"),(-1mm,1mm)) withcolor blue ; > \stopMPcode > > DOES work. > > Of course, these are much simplified minimal examples of what I would like to do. Minimal example to show what is happening: \startbuffer[initialize] picture T; T := textext("Hello"); picture Q; Q := T; \stopbuffer \startbuffer[T] draw T withcolor blue; \stopbuffer \startbuffer[Q] draw Q shifted (-1mm, 1mm) withcolor red; \stopbuffer \startlines Only draw T: \processMPbuffer[initialize,T] Only draw Q: \processMPbuffer[initialize,Q] Draw T & Q : \processMPbuffer[initialize,T,Q] Draw Q & T : \processMPbuffer[initialize,Q,T] \stoplines Aditya ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Metafun textext() 2013-01-10 13:18 ` Aditya Mahajan @ 2013-01-11 0:01 ` Hans Hagen 0 siblings, 0 replies; 7+ messages in thread From: Hans Hagen @ 2013-01-11 0:01 UTC (permalink / raw) To: mailing list for ConTeXt users [-- Attachment #1: Type: text/plain, Size: 3581 bytes --] On 1/10/2013 2:18 PM, Aditya Mahajan wrote: > On Thu, 10 Jan 2013, Alan BRASLAU wrote: > >> On Thu, 10 Jan 2013 06:51:50 -0500 >> Aditya Mahajan <adityam@umich.edu> wrote: >> >>> Since the beginning of MkIV, colors in metapost labels need to be set at >>> the ConTeXt end (Untested): >>> >>> T := thelabel(textext("\color[blue]{I'm seeing double}"), origin); >>> >>> Aditya >> >> I don't believe that this is true, but I am most likely wrong. > > Well, I think it was true in the beginning (as I remember a discussion > from Mojca on how to handle labels differently in the gnuplot module), > but clearly that is not the case now. > >> Indeed "\blue text" has worked, but 'draw T withcolor blue;' *should* >> work as well. >> The processing of textext() has changed recently, it seems. The mkiv implementation has always been rather different from the mkii one: text handling as well as dealing with colors. >> \startMPcode >> label(textext("I'm seeing double"),origin) withcolor green ; >> label(textext("I'm seeing double"),(-1mm,1mm)) withcolor blue ; >> \stopMPcode >> >> DOES work. >> >> Of course, these are much simplified minimal examples of what I would >> like to do. > > Minimal example to show what is happening: > > \startbuffer[initialize] > picture T; > T := textext("Hello"); > > picture Q; > Q := T; > \stopbuffer > > \startbuffer[T] > draw T withcolor blue; > \stopbuffer > > \startbuffer[Q] > draw Q shifted (-1mm, 1mm) withcolor red; > \stopbuffer > > \startlines > Only draw T: \processMPbuffer[initialize,T] > Only draw Q: \processMPbuffer[initialize,Q] > Draw T & Q : \processMPbuffer[initialize,T,Q] > Draw Q & T : \processMPbuffer[initialize,Q,T] > \stoplines You and Alan can pick up the beta from the ftp server and play with this: \setupbodyfont[dejavu] \starttext \startMPpage[offset=10pt] picture MyText ; MyText := textext("Dummy") ; % not used later on picture MyText ; MyText := textext("\red Red") ; draw MyText ; draw MyText scaled 2 shifted (0,-1cm) ; draw MyText scaled 3 shifted (0,-2cm) ; picture MyText ; MyText := textext("Blue Green Red") ; draw MyText rotatedaround(center MyText,10) shifted (0,-3cm) withcolor blue ; draw MyText shifted (0,-4cm) withcolor green ; draw MyText rotatedaround(center MyText,-10) shifted (0,-5cm) withcolor red ; picture MyText ; MyText := image ( draw textext("Green Red Blue {\yellow YELLOW} Whatever 1") ; draw textext("Green Red Blue {\yellow YELLOW} Whatever 2") shifted (10cm,0) ; ) ; draw MyText shifted (0,-6cm) withcolor green ; draw MyText shifted (0,-7cm) withcolor red ; draw MyText shifted (0,-8cm) withcolor blue ; \stopMPpage \stoptext The complication is that we reuse a picture which once defined has frozen properties. However, after hours of lua/tex juggling I managed to made a variant that better keeps track of applied colors. I'm not sure if this is foolproof but it's probably quite ok for what Alan wants to do. Although ... being a scientist he will look for the next frontier ... (or even more scientific: try to prove me wrong). Hans -- ----------------------------------------------------------------- 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 ----------------------------------------------------------------- [-- Attachment #2: textext-002.pdf --] [-- Type: application/pdf, Size: 16483 bytes --] [-- Attachment #3: Type: text/plain, Size: 485 bytes --] ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Metafun textext() 2013-01-10 13:01 ` Alan BRASLAU 2013-01-10 13:17 ` Mojca Miklavec 2013-01-10 13:18 ` Aditya Mahajan @ 2013-01-10 13:29 ` Alan BRASLAU 2 siblings, 0 replies; 7+ messages in thread From: Alan BRASLAU @ 2013-01-10 13:29 UTC (permalink / raw) To: mailing list for ConTeXt users On Thu, 10 Jan 2013 14:01:14 +0100 Alan BRASLAU <alan.braslau@cea.fr> wrote: > \startMPcode > label(textext("I'm seeing double"),origin) withcolor green ; > label(textext("I'm seeing double"),(-1mm,1mm)) withcolor blue ; > \stopMPcode > > DOES work. TESTED! ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-01-11 0:01 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-01-10 11:48 Metafun textext() Alan BRASLAU 2013-01-10 11:51 ` Aditya Mahajan 2013-01-10 13:01 ` Alan BRASLAU 2013-01-10 13:17 ` Mojca Miklavec 2013-01-10 13:18 ` Aditya Mahajan 2013-01-11 0:01 ` Hans Hagen 2013-01-10 13:29 ` Alan BRASLAU
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