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[Pycpp <address@hidden>]

Thank you, it worked.
Is there a way to load the scm file from the same directory as the 
document, so that I can share it with other people in a self-contained way?

On 18/04/2021 17:25, Giovanni Piredda wrote:
> The "Add package" is for TeXmacs macros, the one I wrote is a Scheme 
> macro, which is loaded in a different way (the help section for Scheme 
> is under Help->Scheme extensions, can be overwhelming at the first read).
>
> Let me know if the following helps:
>
> 1) Create an empty file and name it custom-book-title.scm
>
> 2) As a first line of custom-book-title.scm, write
>
> (texmacs-module (styles custom-book-title))
>
> 3) Create a directory named "styles" in $TEXMACS_HOME_PATH/progs and 
> place the file inside it
>
> 4) In the preamble of your file, add <use-module|(styles 
> custom-book-title)> (you can use Paste from -> TeXmacs to have it pasted 
> in the correct format)
>
> For finding out where is the directory $TEXMACS_HOME_PATH/progs, an easy 
> way is to activate Tool->Developer tool from any TeXmacs document, then 
> a new menu appears (Developer), select "Open my-init-texmacs.scm" from 
> that menu and finally figure out where the file you just opened is (one 
> way to do that is to stat the procedure of "Save as", which will open 
> the folder my-init-texmacs.scm is in)
>
> You open the preamble of your file through the menu Part->Show preamble.
>
> Let me know if it works or does not. Step by step we are going to make 
> it work
>
>
> Please note also Massimiliano's answer which is giving further hints.
>
> Finally, the discussion on how to customize a title can become complex 
> (see in Massimiliano's answer "a more flexible approach would be to 
> replace the "document" tag appearing in doc-data-main with a macro"), 
> and for that it would work better in the forum (maybe there you can 
> refer to your original message as 
> http://lists.texmacs.org/wws/arc/texmacs-users/2021-04/msg00029.html, so 
> that anyone who reads has an overview).
>
> G.
>
>
>
>
> On 18.04.21 16:56, Pycpp wrote:
> Thank you for your answer,
> I did not succeed in running your example, I tried loading it with 
> Document > Style > Add package but the title didn't change.
>
> On 18/04/2021 15:19, Giovanni Piredda wrote:
> > In the help files (Help -> Reference Guide -> Standard TeXmacs styles, 
> > at par 4.1.2.) you will find a general description of the mechanism 
> > for rendering titles.
> >
> > As far as I understand the key macro that lays out the title, 
> > doc-data-main, is not implemented as a TeXmacs macro but as a Scheme 
> > function (here the help document might be inaccurate in suggesting 
> > that it is a TeXmacs macro); you can find it in 
> > $TEXMACS_PATH/progs/database/title-markup.scm, and I copy it here
> >
> > (tm-define (doc-data-main t)
> >    `(document
> >       ,@(select t '(doc-title))
> >       ,@(select t '(doc-subtitle))
> >       ,@(with authors (select t '(doc-author))
> >           (if (<= (length authors) 1) authors
> >              (list `(doc-authors ,@authors))))
> >       ,@(select t '(doc-date))
> >       ,@(select t '(doc-misc))
> >       ,@(select t '(doc-inactive))))
> >
> > You can place your new definition in a Scheme module that you load 
> > from your document (please ask if you do not know how to do that).
> >
> > Rearranging the order of the elements is intuitive I think. Here is an 
> > example, where I place the author first and set a line between author 
> > and title (I tested it and it works):
> >
> > (tm-define (doc-data-main t)
> >    `(document
> >       ,@(with authors (select t '(doc-author))
> >           (if (<= (length authors) 1) authors
> >              (list `(doc-authors ,@authors))))
> >       (line (point "0par" "0") (point "1par" "0"))
> >       ,@(select t '(doc-title))
> >       ,@(select t '(doc-subtitle))
> >       ,@(select t '(doc-date))
> >       ,@(select t '(doc-misc))
> >       ,@(select t '(doc-inactive))))
> >
> > Said this, what I wrote is not authoritative at all The mechanism for 
> > the layout is complex and there are many parts which I haven't grasped.
> >
> > I hope that someone else can extend/complete/correct what I wrote, and 
> > that it helps to get you started.
> >
> > I would say that for further info either ask here again, or if the 
> > discussion becomes quite complex maybe the forum at 
> > http://forum.texmacs.cn/ might be a good place.
> >
> >
> > G.
> >
> >
> >
> >
> > On 18.04.21 14:11, Pycpp wrote:
> > > Hello,
> > > I'd like to know how to create a custom style for the title page. The 
> > > manual explains how to modify the appearance of individual elements, 
> > > but I'd like to define new elements (like an illustration image) and 
> > > define the global layout of the title page, i.e. the order in which 
> > > the elements appear, their positions and additional decorations (for 
> > > instance I'd like to draw a horizontal line between the title and the 
> > > subtitle).
> > > How can this be done?
> > > Thank you for your answers!