On 2019-11-08 11:07 am, Thomas Morley wrote:
Below seems to work for \layout.
\version "2.19.83"
idFontSize =
\applyContext
#(lambda (ctx)
(ly:context-set-property! ctx 'fontSize
(cond ((string=? (ly:context-id ctx) "foo")
-6)
((string=? (ly:context-id ctx) "bar")
6)
(else (ly:context-property ctx 'fontSize)))))
\score {
<<
\new Staff = "foo" \relative c' { e4 f g a }
\new Staff = "bar" \relative c' { c4 d e f }
>>
\layout {
\context {
\Staff
\idFontSize
}
}
}
Didn't test for midi, though, why shouldn't the method work there as
well.
Created a helper to wrap up the conditional context modification:
%%%%
\version "2.19.83"
modify = #(define-music-function (name mod) (string? ly:context-mod?)
#{ \applyContext #(lambda (ctx)
(and (string=? (ly:context-id ctx) name)
(ly:context-mod-apply! ctx mod))) #})
\score {
<<
\new Staff = "foo" \fixed c' { g4 c' a b | c'1 }
\new Staff = "bar" \fixed c' { e4 g f d | e1 }
>>
\layout {
\context { \Staff
\modify "foo" \with { fontSize = 3 }
\modify "bar" \with { \override NoteHead.color = #blue }
}
}
\midi {
\tempo 4 = 100
\context { \Staff
\modify "foo" \with { midiInstrument = "flute" }
\modify "bar" \with { midiPanPosition = #LEFT }
}
}
}
%%%%
MIDI output block works too. (:
-- Aaron Hill
