Hi Hans,
Thank you for your suggestion, but it's not what I want, but I probably misstated my request. For me, the image p contains the text "Définition 1", and this is what I want orange rectangle translate to the left edge of the text area.
Am I more clearly ?
Fabrice

2015-08-04 20:08 GMT+02:00 Hans Hagen <pragma@wxs.nl>:
On 8/4/2015 5:04 PM, Fabrice Couvreur wrote:
Hi,
How to have Definition 1, Definition 2, Definition 3 ...?

Is it possible to translate the image p until the left edge of the text
area ?


\startuseMPgraphic{MyFrame}
    picture p ;
    p := textext.rt(\MPstring{MyFrame}) ;
    p := p shifted (0,OverlayHeight-ypart center p) ;
    fill OverlayBox leftenlarged .1TextWidth withcolor \MPcolor{MyColor} ;
    fill boundingbox p withcolor \MPcolor{myColor} ;
    draw p withcolor white ;
    setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic



Thank you,
Fabrice

\showframe

\setupcolors[state=start,cmyk=yes]

\definecolor[MyColor][c=0.00, m=0.10, y=0.20, k=0.00]
\definecolor[myColor][c=0.00, m=0.62, y=1.00, k=0.00]

\setupbodyfont[11pt]
\defineoverlay[MyFrame][\useMPgraphic{MyFrame}]

\defineframedtext
    [MyText]
    [frame=off,
     background=MyFrame,
     width=0.9\textwidth,
     location=right]

\defineoverlay[MyFrame][\useMPgraphic{MyFrame}]

\def\StartFrame{\startMyText}
\def\StopFrame{\startMyText}

\setMPtext{MyFrame}{\hbox spread 1em {\hss\strut
{\bf\feature[+][f:smallcaps]  Définition 1 }\hss}}}

\startuseMPgraphic{MyFrame}

path a ;
path b ;
picture p ;
o := BodyFontSize ;
p :=textext.rt(\MPstring{MyFrame}) ;
p := p shifted (0,OverlayHeight-ypart center p) ;
a := unitsquare xyscaled(OverlayWidth,OverlayHeight) ;
fill a withcolor \MPcolor{MyColor} ;
b := boundingbox p ;
fill b withcolor \MPcolor{myColor} ;
draw p withcolor white ;

\stopuseMPgraphic

\starttext
\startlinecorrection[blank]
\startMyText
\input knuth
\stopMyText
\stoplinecorrection

\startlinecorrection[blank]
\startMyText
\input knuth
\stopMyText
\stoplinecorrection

\stoptext


___________________________________________________________________________________
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
___________________________________________________________________________________



--

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

___________________________________________________________________________________
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
___________________________________________________________________________________