Hans Hagen wrote:

Peter Rolf wrote:

...

Hi all,

I've tested the latest version of \limitatefirstline and it still doesn't work as expected. This is really a complex story (problem).

- the clip mechanism cuts off the lowest part of some special chars (clipping graphics is easy, but I don't understand what happens here) - text is sometimes cropped at word boundaries (example 110pt), instead of beeing clipped

The example file is appended and I use the latest beta. There is no timeline, so fixing is not that urgent.

add some struts:

\setbox\scratchbox\hbox{\begstrut#1\endstrut}% \ifdim\wd\scratchbox>#2\relax \setbox\scratchbox\hbox{\begstrut#3\endstrut}%

and remove your funny voffset

oeps, a relict from testing.

Hans

Yep, it (later example) works with the struts. Thank you Hans! But the clipping still needs the height parameter, else you get no drawings below the baseline. I use \struttotal in my example, which can be too small in case of underbar/underline. working example is attached. Greetings, Peter % interface=en output=pdftex % Time-stamp: % \setupcolors[state=start] \unprotect \def\limitatefirstline#1#2#3% {\hbox\bgroup\strut \setbox\scratchbox\hbox{\begstrut#1\endstrut}% \ifdim\wd\scratchbox>#2\relax \setbox\scratchbox\hbox{\begstrut#3\endstrut}% \hsize#2\relax \advance\hsize-\wd\scratchbox \setbox\scratchbox\vbox{\forgetall\veryraggedright\begstrut#1\endstrut}% \setbox\scratchbox\vsplit\scratchbox to \lineheight \vbox {\unvbox\scratchbox \global\setbox\plusone\lastbox \global\setbox\plusone\hbox{\unhbox\plusone}% \hbox to #2 {\ifx\clip\undefined \box\plusone \else \ifdim\wd\plusone>\hsize \clip[\c!width=\hsize,\c!height=\struttotal]{\ruledhbox{\box\plusone}} \else \ifdim\wd\plusone<\dimexpr\hsize-2ex\relax% tolerance for "successful" breaking \clip[\c!width=\hsize,\c!height=\struttotal]{\ruledhbox{\begstrut#1\endstrut}}% must be #1 here \else \box\plusone \fi \fi \fi \removeunwantedspaces\hss#3}}% \else #1% \fi \egroup} \protect \def\CropSymbol{\red...}% \starttext % blue for the limitatetext examples \setupframed[offset=overlay, framecolor=lightgray] \framed[width=8ex,height=\struttotal,background=color,backgroundcolor=black]{\white 8ex} \framed{\limitatefirstline{\underbar{WqTextdummy}}{8ex}{\CropSymbol}} \framed{\limitatetext{\blue\underbar{WqTextdummy}}{8ex}{\CropSymbol}} \blank \framed[width=120pt,height=\struttotal,background=color,backgroundcolor=black]{\white 120 pt} \framed{\limitatefirstline{\textbar \_\textcircumflex\texttilde \%\$\#\textbraceleft \textbraceright \textpm \copyright \registered \pi \textdegree <>\&}{120pt}{\CropSymbol}} \framed{\limitatetext{\blue\textbar \_\textcircumflex\texttilde \%\$\#\textbraceleft \textbraceright \textpm \copyright \registered \pi \textdegree <>\&}{120pt}{\CropSymbol}} \blank \framed[width=110pt,height=\struttotal,background=color,backgroundcolor=black]{\white 110 pt} \framed{\limitatefirstline{\textbar \_\textcircumflex\texttilde \%\$\#\textbraceleft \textbraceright \textpm \copyright \registered \pi \textdegree <>\&}{110pt}{\CropSymbol}} \framed{\limitatefirstline{This text is definitely too long to fit this frame.}{110pt}{\CropSymbol}} \framed{\limitatetext{\blue This text is definitely too long to fit this frame.}{110pt}{\CropSymbol}} \blank \framed[width=100pt,height=\struttotal,background=color,backgroundcolor=black]{\white 100 pt} \framed{\limitatefirstline{\textbar \_\textcircumflex\texttilde \%\$\#\textbraceleft \textbraceright \textpm \copyright \registered\space \pi \textdegree <>\&}{100pt}{\CropSymbol}} \stoptext %%% Local Variables: %%% mode: context %%% TeX-master: "" %%% End:

Peter Rolf wrote:

\ifdim\wd\plusone<\dimexpr\hsize-2ex\relax% tolerance for "successful" breaking

\clip[\c!width=\hsize,\c!height=\struttotal]{\ruledhbox{\begstrut#1\endstrut}}% must be #1 here

This may fail, since it #1 may have more than one line, and this whole branch is entered when there are more lines Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

Hi all, Hans Hagen wrote:

Peter Rolf wrote:

another one

\def\limitatefirstline#1#2#3% {\hbox\bgroup\strut \setbox\scratchbox\hbox{\begstrut#1\endstrut}% \ifdim\wd\scratchbox>#2\relax \setbox\scratchbox\hbox{#3}% \hsize#2\relax \advance\hsize-\wd\scratchbox \setbox\scratchbox\vbox{\forgetall\veryraggedright#1}% \setbox\scratchbox\vsplit\scratchbox to \lineheight \vbox {\unvbox\scratchbox \global\setbox\plusone\lastbox \global\setbox\plusone\hbox{\strut\unhbox\plusone}% \hbox % to #2 {\ifx\clip\undefined \box\plusone \else\ifdim\wd\plusone>\hsize

\lower\strutdepth\hbox{\clip[\c!width=\hsize,\c!height=\lineheight]{\hbox{\raise\strutdepth\box\plusone}}}%

\else \box\plusone \fi\fi \removeunwantedspaces#3}}% \removeunwantedspaces\hss#3}}% \else #1% \fi \egroup}

Hans

Seems to work now :) There is only one thing left. The clip mechanism is only called, if breaking fails (which is not enought). An example: My name is ThisPartIsVisiblexxxxxxxxxxxxxxxxxx. ^^ ^^ break cut here Breaking is successful, so \limitatefirstline acts nearly like \limitatetext and you get My name is... instead of My name is ThisPartIsVisible... There must be another test, which checks the quality (width) of the breaking. If there is too much wasted space, clipping should be used instead. \else\ifdim\wd\plusone<\dimexpr\hsize-2ex\relax% breaking tolerance \lower\strutdepth\hbox{\clip[\c!width=\hsize,\c!height=\lineheight]{\hbox{\raise\strutdepth\hbox{\begstrut#1\endstrut}}}}% I don't know, if boxing #1 is enought (more than one line problem)... and we have to add \dontcomplain somewhere. The tolerance of 2ex acts very greedy, so in most cases, clipping is used (not usefull in common , but that's the way I need it). Maybe 6-8ex are a better value for the final (no need to force 2ex to others). Thanks Hans. This was a hard birth, but the baby is looking nice :) Peter