Re: Lower-case letter rehearsal marks

[Thomas Morley]

2015-12-09 17:17 GMT+01:00 David Kastrup <address@hidden>:
> Thomas Morley <address@hidden> writes:
>
>> 2015-12-09 15:19 GMT+01:00 David Kastrup <address@hidden>:
>>> Thomas Morley <address@hidden> writes:
>>>
>>>> This whole stuff looks quite obfuscated to me.
>>>> Currently we do a lot of calculation to end up with then hard-coded 
>>>> vectors.
>>>> Why not give the initial value directly?
>>>> Below three suggestions, via string, char-set, vector.
>>>> Maybe we could even introduce a context-property for it.
>>>
>>> I think we may be going at this the wrong way.  We have a similar issue
>>> with chord names.  And all of that has to be constructed ad-hoc in some
>>> manner.
>>
>>
>> Not sure I fully understand.
>> Let me try to describe what we do atm (just to clear my thoughts, but
>> limiting them to RehearsalMark).
>>
>> (1)
>> The procedure to format RehearsalMark is given by the context-property
>> `markFormatter'.
>
> This procedure receives a number and a context.  It has to be defined in
> Scheme.  It has to return a markup.
>
> We have stuff like
>
> Documentation/notation/rhythms.itely:  \set Score.markFormatter = 
> #format-mark-numbers
> Documentation/notation/rhythms.itely:  \set Score.markFormatter = 
> #format-mark-box-numbers
> Documentation/notation/rhythms.itely:  \set Score.markFormatter = 
> #format-mark-circle-numbers
> Documentation/notation/rhythms.itely:  \set Score.markFormatter = 
> #format-mark-circle-letters
>
> Why not
>
> \set Score.markFormat = \markup \circle \bold \markletter \etc
>
> (the latter use of \etc does not work yet but that's fixable).
>
> Suddenly we don't need all that folderol.  What with marks that show the
> bar number instead (which is what the context argument is about)?
>
> Not really sure about that.  Maybe the bar number should be in the
> "props" argument when formatting?  That way there could be a markup
> command producing it.


Not sure why
  foo-markup = \markup \bold \with-color #cyan \markletter \etc
  \markup \foo #1
does not work, as opposed to
  bold-red-markup = \markup \bold \with-color #red \etc
  \markup \bold-red "text"


markFormatter can already be set like:
      markFormatter =
        #(lambda (mark ctx)
          #{
            \markup \bold \markletter #(1- mark)
          #})
or:
      markFormatter =
        #(lambda (mark ctx)
          #{
            \markup
              \bold \circle
              #(number->string (ly:context-property ctx 'currentBarNumber))
          #})

Though, I've no idea how to proceed from here or in which direction or
whether it can be done in scheme without C++-work at all.
Hints apreciated.

Cheers,
  Harm