]> git.donarmstrong.com Git - lilypond.git/blob - input/regression/incipit.ly
Docs: run convert-ly for 2.14.0.
[lilypond.git] / input / regression / incipit.ly
1 \version "2.14.0"
2
3 \header {
4   texidoc = "Incipits can be printed using an @code{InstrumentName}
5 grob."
6 }
7
8 %% to prevent warnings/programming errors:
9 #(set-object-property! 'music 'backend-type? ly:music?)
10 #(set-object-property! 'music 'backend-doc "Incipit music")
11 #(ly:add-interface 'incipit-interface "An incipit." '(music))
12 #(let* ((instrument-def (assoc 'InstrumentName all-grob-descriptions))
13         (meta-def (assoc 'meta (cdr instrument-def)))
14         (interfaces-def (assoc 'interfaces (cdr meta-def)))
15         (interfaces (cdr interfaces-def)))
16    (set-cdr! interfaces-def (cons 'incipit-interface interfaces)))
17
18 \score {
19   \new Staff {
20     %% All this would be shortcuted by an appropriate music function:
21     \override Staff.InstrumentName #'music = ##{ \clef "petrucci-c1" c'4 d' e' f' #}
22     \override Staff.InstrumentName #'self-alignment-X = #RIGHT
23     \override Staff.InstrumentName #'padding = #0
24     \override Staff.InstrumentName #'stencil =
25       #(lambda (grob)
26          (let* ((instrument-name (ly:grob-property grob 'long-text))
27                 (layout (ly:output-def-clone (ly:grob-layout grob)))
28                 (music (make-sequential-music
29                         (list (context-spec-music
30                                (make-sequential-music
31                                 (list (make-property-set
32                                        'instrumentName instrument-name)
33                                       (make-grob-property-set
34                                        'VerticalAxisGroup
35                                        'Y-extent '(-4 . 4))))
36                                'MensuralStaff)
37                               (ly:grob-property grob 'music))))
38                 (score (ly:make-score music))
39                 (mm (ly:output-def-lookup layout 'mm))
40                 (indent (ly:output-def-lookup layout 'indent))
41                 (incipit-width (ly:output-def-lookup layout 'incipit-width))
42                 (scaled-incipit-width (if (number? incipit-width)
43                                           (* incipit-width mm)
44                                           (* indent 0.5))))
45            (ly:output-def-set-variable! layout 'indent (- indent scaled-incipit-width))
46            (ly:output-def-set-variable! layout 'line-width indent)
47            (ly:output-def-set-variable! layout 'ragged-right #f)
48            (ly:score-add-output-def! score layout)
49            (set! (ly:grob-property grob 'long-text)
50                  (markup #:score score))
51            (system-start-text::print grob)))
52
53     %% the instrument name definition is separated:
54     \set Staff.instrumentName = #"Instrument"
55     c'4 d' e' f'
56     g'1
57   }
58   \layout {
59     indent = 5\cm
60     incipit-width = 3\cm
61   }
62 }