Thank you very much Hans for your clear and detailed reply! I can confirm that this resolves my issue - and I really like the flexibility that this syntax provides!
Best regards, Florent Le dim. 11 août 2024 à 12:18, Hans Hagen via ntg-context <ntg-context@ntg.nl> a écrit : > On 8/11/2024 11:24 AM, Florent Michel wrote: > > Hi, > > > > I am trying to reproduce the behaviour of the tcolorbox LaTeX package, > > more specifically breakable boxes (as illustrated here: > > https://tex.stackexchange.com/a/676607/123770 > > <https://tex.stackexchange.com/a/676607/123770>). It works nicely out > of > > the box (pun intended) using `\definetextbackground` and drawing the > > frame with MetaPost, using counters to keep track of whether the current > > text is at the top, middle, or bottom of the box. However, I'm having > > issues when one box ends and another starts on the same page (see more > > details below). From what I understand, the issue is that counters seem > > to be updated on a page-wide basis, so each MPgraphic ‘sees’ the values > > of counters at the end of the current page, which may not be right if > > another box modifies them. Would anyone know how to resolve this? > > > > Based on two answer on TeX StackExchange > > (https://tex.stackexchange.com/a/486124/123770 > > <https://tex.stackexchange.com/a/486124/123770> , > > > https://tex.stackexchange.com/questions/377234/context-frame-problems/377261#377261 > < > https://tex.stackexchange.com/questions/377234/context-frame-problems/377261#377261>), > the following code works well if there is no more than one box per page: > > > > ``` > > You're missing a feature: > > this is the original trick: > > if multilocs[i] == 1 : % begin > elseif multilocs[i] == 2 : % between > elseif multilocs[i] == 3 : % end > fi ; > > and in lmtx we have > > if multikind[i] = "single" : > elseif multikind[i] = "first" : > elseif multikind[i] = "middle" : > elseif multikind[i] = "last" : > > Also: > > path p; > p := ( llcorner multipars[i] > -- lrcorner multipars[i] > -- urcorner multipars[i] > -- ulcorner multipars[i] > -- cycle ) > enlarged (EmWidth,EmWidth) ; > fill p withcolor boxfillcolor ; > > can be > > fill multipars[i] enlarged (EmWidth,EmWidth) ... > > Hans > > > ----------------------------------------------------------------- > Hans Hagen | PRAGMA ADE > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands > tel: 038 477 53 69 | www.pragma-ade.nl | 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 / > https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl > webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) > archive : https://github.com/contextgarden/context > wiki : https://wiki.contextgarden.net > > ___________________________________________________________________________________ >
___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________
