Next: , Previous: Other uses for tweaks, Up: Further tweaking


4.6.2 Using variables for tweaks

Override commands are often long and tedious to type, and they have to be absolutely correct. If the same overrides are to be used many times it may be worth defining variables to hold them. Suppose we wish to emphasize certain words in lyrics by printing them in bold italics. The \italic and \bold commands only work within lyrics if they are also embedded in \markup, which makes them tedious to enter, so as an alternative can we instead use the \override and \revert commands?

\override Lyrics . LyricText #'font-shape = #'italic
\override Lyrics . LyricText #'font-series = #'bold

\revert Lyrics . LyricText #'font-shape
\revert Lyrics . LyricText #'font-series

These would also be extremely tedious to enter if there were many words requiring emphasis. So instead we define these as two variables, and use them as follows, although normally we would perhaps choose shorter names for the variables to make them quicker to type:

     
     emphasize = {
       \override Lyrics . LyricText #'font-shape = #'italic
       \override Lyrics . LyricText #'font-series = #'bold
     }
     normal = {
       \revert Lyrics . LyricText #'font-shape
       \revert Lyrics . LyricText #'font-series
     }
     
     global = { \time 4/4 \partial 4 \key c \major}
     SopranoMusic   = \relative c' { c4 | e4. e8 g4  g  | a a g }
     AltoMusic  = \relative c' { c4 | c4. c8 e4  e  | f f e }
     TenorMusic = \relative c  { e4 | g4. g8 c4. b8 | a8 b c d e4 }
     BassMusic  = \relative c  { c4 | c4. c8 c4  c  | f8 g a b c4 }
     VerseOne   = \lyrics { E -- | ter -- nal \emphasize Fa -- ther, \normal | strong to save, }
     VerseTwo   = \lyricmode { O | \emphasize Christ, \normal whose voice the | wa -- ters heard, }
     VerseThree = \lyricmode { O | \emphasize Ho -- ly Spi -- rit, \normal | who didst brood }
     VerseFour  = \lyricmode { O | \emphasize Tri -- ni -- ty \normal of | love and pow'r }
     
     \score {
       \new ChoirStaff <<
         \new Staff <<
           \clef "treble"
           \new Voice = "Soprano"  { \voiceOne \global \SopranoMusic }
           \new Voice = "Alto" { \voiceTwo \AltoMusic }
           \new Lyrics \lyricsto "Soprano" { \VerseOne   }
           \new Lyrics \lyricsto "Soprano" { \VerseTwo   }
           \new Lyrics \lyricsto "Soprano" { \VerseThree }
           \new Lyrics \lyricsto "Soprano" { \VerseFour  }
         >>
         \new Staff <<
           \clef "bass"
           \new Voice = "Tenor" { \voiceOne \TenorMusic }
           \new Voice = "Bass"  { \voiceTwo \BassMusic  }
         >>
       >>
     }

[image of music]

Cette page documente LilyPond-2.11.58 (branche de développement).

Rapportez toute anomalie en français à lilypond-user-fr@gnu.org ou en anglais à http://post.gmane.org/post.php?group=gmane.comp.gnu.lilypond.bugs

Vos suggestions à propos de la documentation sont les bienvenues.

Autres langues : español.