color in textext

color in textext

[Hans van der Meer]

I'm trying to play with colors in textext inclusions:

\setupcolors[state=start]
\setupMPpage[offset=2mm]
\startuseMPgraphic{test}
	label(textext("\color[green]{XYZ}"), (0,0));
\stopuseMPgraphic
\starttext
\forceMPTEXgraphictrue
\startMPpage
	\includeMPgraphic{test}
\stopMPpage
\stoptext

This label does not appear in green, although the intermediate files  
contain:
% figure 1 : texpictures[1] := btex \color [green]{XYZ} etex ;

Is it possible that \setupcolors[state=start] is not communicated?
If so, how and where should this be done?
\setupcolors[state=start] cannot be put inside the textext as it is a  
preamble thing (tried it)

(note: although one could do: "label(textext("XYZ"), (0,0) withcolor  
green;" this interferes with other macro operations I want to perform)

yours sincerely,
dr. H. van der Meer

Re: color in textext

[Hans Hagen]

Hans van der Meer wrote:

> I'm trying to play with colors in textext inclusions:
>
> \setupcolors[state=start]
> \setupMPpage[offset=2mm]
> \startuseMPgraphic{test}
>     label(textext("\color[green]{XYZ}"), (0,0));
> \stopuseMPgraphic
> \starttext
> \forceMPTEXgraphictrue
> \startMPpage
>     \includeMPgraphic{test}
> \stopMPpage
> \stoptext
>
> This label does not appear in green, although the intermediate files  
> contain:
> % figure 1 : texpictures[1] := btex \color [green]{XYZ} etex ;
>
> Is it possible that \setupcolors[state=start] is not communicated?

indeed,

\startMPenvironment
  \setupcolors[state=start]
\stopMPenvironment

if you want to share settings between the tex and mp runs:

\startMPenvironment[global]
  \setupcolors[state=start]
\stopMPenvironment

Hans

Re: color in textext

[Hans van der Meer]

I'm sorry, I ran it in a few variations, but neither does work here:

\setupcolors[state=start]
\startMPenvironment           % both with and without: [global]
	\setupcolors[state=start]
\stopMPenvironment
\setupMPpage[offset=2mm]
\startuseMPgraphic{test}
	label(textext("\color[green]{XYZ}"), (0,0));               % returns  
black XYZ on execute
	label(textext("\startcolor[red]{XYZ}\stopcolor"), (0,20)); % returns  
"unknown" on execute
\stopuseMPgraphic
\starttext
\forceMPTEXgraphictrue
\startMPpage
	\includeMPgraphic{test}
\stopMPpage
\stoptext

I tried to run this on context-live but there got both outputs to  
"unknown".

yours sincerely,
dr. H. van der Meer



On Dec 28, 2005, at 15:46, Hans Hagen wrote:

> Hans van der Meer wrote:
>>
>> Is it possible that \setupcolors[state=start] is not communicated?
>
> indeed,
>
> \startMPenvironment
>  \setupcolors[state=start]
> \stopMPenvironment
>
> if you want to share settings between the tex and mp runs:
>
> \startMPenvironment[global]
>  \setupcolors[state=start]
> \stopMPenvironment
>
> Hans
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

Re: color in textext

[Hans Hagen]

Hans van der Meer wrote:

> I'm sorry, I ran it in a few variations, but neither does work here:
>
ah .. all those users who want to stress this tex-mp game to the limits 
... keep in mind that tex in mp is actually a hack!

your unknown will go away when you redefine the color commands to be 
unexpandable

\unexpanded\def\startcolor
  {\ifincolor
     \expandafter\doglobalstartcolor
   \else
     \expandafter\noglobalstartcolor
   \fi}

\unexpanded\def\stopcolor
  {\ifincolor
     \doglobalstopcolor
   \else
     \noglobalstopcolor
   \fi}

> \setupcolors[state=start]
> \startMPenvironment           % both with and without: [global]
>     \setupcolors[state=start]
> \stopMPenvironment
> \setupMPpage[offset=2mm]
> \startuseMPgraphic{test}
>     label(textext("\color[green]{XYZ}"), (0,0));               % 
> returns  black XYZ on execute
>     label(textext("\startcolor[red]{XYZ}\stopcolor"), (0,20)); % 
> returns  "unknown" on execute
> \stopuseMPgraphic
> \starttext
> \forceMPTEXgraphictrue
> \startMPpage
>     \includeMPgraphic{test}
> \stopMPpage
> \stoptext
>
> I tried to run this on context-live but there got both outputs to  
> "unknown".

color itself ... mp only reads back the character (+ some rule) data, 
nothing else, so color needs to be applied at another level (there is 
some limited and therefore useless special support)

so, the best i can give you is:

% output=pdf

\unexpanded\def\startcolor
  {\ifincolor
     \expandafter\doglobalstartcolor
   \else
     \expandafter\noglobalstartcolor
   \fi}

\unexpanded\def\stopcolor
  {\ifincolor
     \doglobalstopcolor
   \else
     \noglobalstopcolor
   \fi}

\setupcolors[state=start]

\startMPenvironment           % both with and without: [global]
    % only font and macro defs make sense here
\stopMPenvironment

\setupMPpage[offset=2mm]

\startuseMPgraphic{test}
    draw thelabel(textext("XYZ"), (0,0)) withcolor \MPcolor{green} ;
    draw thelabel(textext("XYZ"), (0,20)) withcolor \MPcolor{red} ;
\stopuseMPgraphic

\starttext
\forceMPTEXgraphictrue
\startMPpage
    \includeMPgraphic{test}
\stopMPpage
\stoptext