input/regression/apply-output.ly

   1
   2 \version "1.9.1"
   3 \header {
   4
   5 texidoc = "The @code{\applyoutput} expression is the most flexible way to
   6 tune properties for individual grobs.
   7
   8 Here, the layout of a note head is changed depending on its vertical
   9 position.
  10 "
  11
  12 }
  13
  14 #(define  (mc-squared gr org cur)
  15   (let*
  16       (
  17        (ifs (ly:get-grob-property gr 'interfaces))
  18        (sp (ly:get-grob-property gr 'staff-position))
  19        )
  20   (if (and (memq 'note-head-interface ifs)
  21            (memq sp '(-2 -3 -5)))
  22       (begin
  23         (ly:set-grob-property! gr 'molecule-callback brew-new-markup-molecule)
  24         (ly:set-grob-property! gr 'font-family 'roman)
  25         (ly:set-grob-property!
  26          gr 'text
  27          (make-raise-markup -0.5
  28                             (case sp
  29                               ((-5) (make-simple-markup "m"))
  30                               ((-3) (make-simple-markup "c "))
  31                               ((-2) (make-smaller-markup (make-bold-markup "2")))
  32                               (else (make-simple-markup "bla"))
  33                               ))))
  34       )))
  35
  36 \score {
  37
  38 \notes \context Voice \relative  c' {
  39                                       \stemUp
  40                                       \property Voice.autoBeaming = ##f
  41    { <<d f g b>>8
  42      \context Voice \applyoutput #mc-squared
  43
  44          <<d f g b>>
  45    }
  46
  47    }
  48 \paper { raggedright = ##t
  49 %                    outputscale = 5
  50                      }
  51 }