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

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 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 -----------------------------------------------------------------