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[lilypond.git] / Documentation / snippets / numbers-as-easy-note-heads.ly

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+% DO NOT EDIT this file manually; it is automatically
+% generated from Documentation/snippets/new
+% Make any changes in Documentation/snippets/new/
+% and then run scripts/auxiliar/makelsr.py
+%
+% This file is in the public domain.
+%% Note: this file works from version 2.14.0
+\version "2.14.0"
+
+\header {
+%% Translation of GIT committish: 70f5f30161f7b804a681cd080274bfcdc9f4fe8c
+  texidoces = "
+
+Las cabezas de nota de notación fácil utilizan la propiedad
+@code{note-names} del objeto @code{NoteHead} para determinar lo que
+aparece dentro de la cabeza.  Mediante la sobreescritura de esta
+propiedad, es posible imprimir números que representen el grado de la
+escala.
+
+Se puede crear un grabador simple que haga esto para la cabeza de cada
+nota que ve.
+
+"
+
+  doctitlees = "Números como notas de notación fácil"
+
+  lsrtags = "pitches"
+  texidoc = "
+Easy notation note heads use the @code{note-names} property
+of the @code{NoteHead} object to determine what appears inside
+the note head.  By overriding this property, it is possible
+to print numbers representing the scale-degree.
+
+A simple engraver can be created to do this for every note head
+object it sees.
+"
+  doctitle = "Numbers as easy note heads"
+} % begin verbatim
+
+
+#(define Ez_numbers_engraver
+   (list
+    (cons 'acknowledgers
+          (list
+           (cons 'note-head-interface
+                 (lambda (engraver grob source-engraver)
+                   (let* ((context (ly:translator-context engraver))
+                          (tonic-pitch (ly:context-property context 'tonic))
+                          (tonic-name (ly:pitch-notename tonic-pitch))
+                          (grob-pitch
+                           (ly:event-property (event-cause grob) 'pitch))
+                          (grob-name (ly:pitch-notename grob-pitch))
+                          (delta (modulo (- grob-name tonic-name) 7))
+                          (note-names
+                           (make-vector 7 (number->string (1+ delta)))))
+                     (ly:grob-set-property! grob 'note-names note-names))))))))
+
+#(set-global-staff-size 26)
+
+\layout {
+  ragged-right = ##t
+  \context {
+    \Voice
+    \consists \Ez_numbers_engraver
+  }
+}
+
+\relative c' {
+  \easyHeadsOn
+  c4 d e f
+  g4 a b c \break
+
+  \key a \major
+  a,4 b cis d
+  e4 fis gis a \break
+
+  \key d \dorian
+  d,4 e f g
+  a4 b c d
+}