On Fri, Oct 24, 2008 at 2:15 PM, Aditya Mahajan wrote:

On Fri, 24 Oct 2008, Wolfgang Schuster wrote:

...

Hi all,

what is the best method to format MetaPost labels in MkII with \doattributes.

\startMPenvironment[global]

...

\setupcolors[state=start]

\def\labelstyle{bold} \def\labelcolor{red} \stopMPenvironment

This gives you only bold label.

...

\starttext \startMPcode label(textext("\doattributes{label}{style}{color}{Label}"),origin) ; \stopMPcode \stoptext

Tex colors do not work inside textext. Try

label(textext("\startcolor[red] red \stopcolor"), origin) ;

One way to get around this is to use \sometxt.

label(\sometxt{\doattributes{label}{style}{color}{Label}},(5cm,0)) ;

But then you have to be careful about the differences between \sometxt in MKII and MKIV (which I need to summarize on the wiki).

Here is a new example where I can't even use \sometxt. \setupcolors[state=start] \def\labelstyle{bold} \def\labelcolor{red} \starttext \resetMPdrawing \startMPdrawing label(textext("\doattributes{label}{style}{color}{Label}"),origin) ; label(\sometxt{\doattributes{label}{style}{color}{Label}},origin) ; \stopMPdrawing \MPdrawingdonetrue \getMPdrawing \stoptext Wolfgang

On Tue, Oct 28, 2008 at 3:47 PM, Aditya Mahajan wrote:

On Mon, 27 Oct 2008, Wolfgang Schuster wrote:

...

On Fri, Oct 24, 2008 at 2:15 PM, Aditya Mahajan wrote:

...

On Fri, 24 Oct 2008, Wolfgang Schuster wrote:

...

Hi all,

what is the best method to format MetaPost labels in MkII with \doattributes.

\startMPenvironment[global]

...

\setupcolors[state=start]

\def\labelstyle{bold} \def\labelcolor{red} \stopMPenvironment

This gives you only bold label.

...

\starttext \startMPcode label(textext("\doattributes{label}{style}{color}{Label}"),origin) ; \stopMPcode \stoptext

Tex colors do not work inside textext. Try

label(textext("\startcolor[red] red \stopcolor"), origin) ;

One way to get around this is to use \sometxt.

label(\sometxt{\doattributes{label}{style}{color}{Label}},(5cm,0)) ;

But then you have to be careful about the differences between \sometxt in MKII and MKIV (which I need to summarize on the wiki).

Here is a new example where I can't even use \sometxt.

Sometxt does not work appear to work with \startMPdrawing (there is no output at all). I think that the reason is that MPdrawing simply writes stuff to the MPfile without doing the extra work needed for sometxt.

I will call this is a bug, but I do not know if Hans wants to work on TeX-MP interaction in MKII now.

...

\setupcolors[state=start]

\def\labelstyle{bold} \def\labelcolor{red}

\starttext \resetMPdrawing \startMPdrawing label(textext("\doattributes{label}{style}{color}{Label}"),origin) ; label(\sometxt{\doattributes{label}{style}{color}{Label}},origin) ; \stopMPdrawing \MPdrawingdonetrue \getMPdrawing \stoptext

It may be possible to write your macros without \start-stop-MPdrawing. Everything inside \start-stop MP(code|graphic) is first parsed by TeX, so you can do things like

\newif\ifcircle \circletrue

\startMPcode draw \ifcircle fullcircle \else fullsquare \fi xyscaled (5cm,5cm) ; \stopMPcode

So, instead of writing stuff to MP using start-stop MPdrawing, you can simply set some flags in conditionals and chardefs, and then write one MP(graphic|code) to write one MP file. This strategy will not work for all cases, but can be useful for some.

I droped now the MKII part of my module and rewrite parts of the code with Lua, sometimes and easier and I could use start/stopMPcode with calls to TeX for a few functions. Wolfgang