I was wandering if it would be possible and not a daunting task to obtain in ConTeXt the edges of a frame excluding its intersection with other two edges. By an example, to obtain the left edge without points also in bottom and top edges. I think it could be very useful if one wants to draw thick vertical lines between words, cause one can manage very easily the height of the vertical line (a lateral edge of a frame) in a way that this height doesn't change with the thickness. I looked for a solution but I found nothing. Perhaps in order to implement that, one must touch very deep the code that controls the behaviour of \framed.
Or in general, the problem is to find a way of putting (in title) a vertical line controlling at the same time and independently: a) its thickness; b) its bottom line c) its top line. The issue with boxes is something that could solve it, but I don't know if it is an efficient way, and I cannot figure out some another. The problem can be set this way:
Consider this code:
\setupalign[hanging]
\definecolor[marca][red]
\setuphead
[chapter]
[
page=yes,sectionsegments=chapter,
before={\blank[force,4*line]},
after={\blank[4*line]},strut=no,
command=\mychap, numberstyle=\tfd
]
\definebodyfontenvironment[default][d=3.3]
\defineframed
[chapterframeda]
[
offset=0em,
frame=off,
strut=no,
align={flushright,nothypenated},
location=top,
foregroundstyle=sans,
rulethickness=5pt
]
\defineframed
[chapterframedb]
[
offset=0em,
%frame=off,
strut=no,
align={flushleft,nothypenated},
location=top,
foregroundstyle=sans,
rulethickness=5pt,
]
\define[2]\mychap
{\hbox \bgroup
\headsetupspacing
%\hfill
\chapterframeda[width=2cm, framecolor=marca]{#1}
\chapterframedb[width=\textwidth,framecolor=marca,leftframe=on,align=normal,location=bottom]{#2}
\egroup}
\setuppagenumbering
[alternative=doublesided,
location=]
\setupheader
[style=\ss, strut=no]
\setupheadertexts
[] [\setups{text:header:1}]
[\setups{text:header:2}] []
\startsetups text:header:1
\getmarking[chapter][current]
\quad\chapterframeda[height=1.5em,framecolor=marca,leftframe=on]{}
\quad\pagenumber
\stopsetups
\startsetups text:header:2
\quad\chapterframedb[align=normal,location=top,frame=off]{\pagenumber}
\quad\chapterframedb[framecolor=marca, leftframe=on,align=normal,location=top]{Platonismo pleno y estructuralismo {\it ante rem}}
\stopsetups
\definetext
[chapterstart]
[footer]
[pagenumber]
\newdimen\Margin
\Margin=3cm
\newdimen\MarginRaise
\MarginRaise=56ex
\setuplayout
[
backspace=4.3cm,
width=fit,
height=middle,footer=\bodyfontsize,
header=3\bodyfontsize,
headerdistance=\bodyfontsize,
bottom=3\bodyfontsize,
location={middle,doublesided},
margin=\Margin,
rightmargin=3.5cm,
marking=on
]
\showgrid
\starttext
\chapter{Presentación de la doctrina}
\stoptext
The two frames are there only to provide a vertical line as separator between number and text, the left edge of the frame created with \chapterframedb. But I am looking for a separator of exactly the height of the text inside the frame, in both cases the height of the initial "P". I thought that if I could obtain the left edge of that frame without the points that belongs also to the top or bottom edges, this could be done trivially. But I don't know if it is feasible and i've tryied others methods to obtain a separator of which I could decide its bottom, its top and its thikness all at a time, and I 've obtained nothing.
