[EMAIL PROTECTED] writes:
>
> I have a few questions:
>
> 1) Why, with \parenthesizeA which uses an \applyoutput, only the first
> "d" note is parenthesized, and not the second?
\applyoutput is a single shot command.
> 2) If I remove the first "c" note, a warning occurs and the first
> \parenthesizeA has no effect.
probably because there is no Voice context yet.
> 3) In [1], I would like to test if the current grob has the given
> type. It seems that the idiomatic way to conditionaly apply an
> output function on a specific grob type is to test if
> MY-GROB-TYPE-interface is a member of
> (ly:grob-property grob 'interfaces). Is there a way get
> 'note-head-interface from 'NoteHead, for instance? I guess that a
> specialized NoteHead, with an other name metafield, would not
> satisfy test [1]...
Correct, but then again, if the function should apply to
note-head-interface, the call should be like
\parenthesizeC #'note-head-interface
> 4) In [2], I would like to get the 'print-function of a grob of the
> given type. Something like:
> (ly:grob-property (make-grob grob-type) 'print-function)
> or:
> (default-grob-property grob-type 'print-function)
> Is there a better/prefered way to do this?
try this (subversion is down, so I can't commit)
LY_DEFINE (ly_context_grob_definition, "ly:context-grob-definition",
1, 0, 0, (SCM context, SCM name),
"Return the definition of @var{name} (a symbol) within @var{context} "
"as an alist")
{
Context *tr = unsmob_context (context);
SCM_ASSERT_TYPE (tr, context, SCM_ARG1, __FUNCTION__, "Context");
SCM_ASSERT_TYPE (name, ly_c_symbol_p (name), SCM_ARG2, __FUNCTION__, "symbol");
return updated_grob_properties (tr, name);
}
> 5) Which one, between \parenthesizeA, using \applyoutput, or
> \parenthesizeB, with \override of print-function, would be better?
I prefer B
> 6) If one try:
>
> \parenthesizeB #'DynamicText { c\p }
>
> one get the following warning:
> programming error: Stencil::moved_to_edge: adding empty stencil.
> twice. I'm not sure I understand the internals of the
> parenthesize-print-function procedure.
I suspect that you forgot to set font-encoding = fetaMusic before
selecting the parentheses from the font.
--
Han-Wen Nienhuys | [EMAIL PROTECTED] | http://www.xs4all.nl/~hanwen
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