From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Metafun textext()
Date: Fri, 11 Jan 2013 01:01:45 +0100 [thread overview]
Message-ID: <50EF5669.9020705@wxs.nl> (raw)
In-Reply-To: <alpine.DEB.2.02.1301100811480.5047@nqv-guvaxcnq>
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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
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next prev parent reply other threads:[~2013-01-11 0:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-10 11:48 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 [this message]
2013-01-10 13:29 ` Alan BRASLAU
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