Imported Upstream version 2.16.0

[lilypond.git] / Documentation / snippets / new / engravers-one-by-one.ly

diff --git a/Documentation/snippets/new/engravers-one-by-one.ly b/Documentation/snippets/new/engravers-one-by-one.ly
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-\version "2.14.0"
-
-\header {
-  lsrtags = "contexts-and-engravers"
-
-  texidoc = "
-The notation problem, creating a certain symbol, is handled by plugins.
- Each plugin is called an Engraver. In this example, engravers are
-switched on one by one, in the following order:
-
-- note heads,
-
-
-- staff symbol,
-
-
-- clef,
-
-
-- stem,
-
-
-- beams, slurs, accents,
-
-
-- accidentals, bar lines, time signature and key signature.
-
-
-
-Engravers are grouped. For example, note heads, slurs, beams etc. form
-a @code{Voice} context. Engravers for key signature, accidentals, bar
-line, etc. form a @code{Staff} context.
-
-"
-  doctitle = "Engravers one-by-one"
-} % begin verbatim
-
-
-%% sample music
-topVoice = \relative c' {
-  \key d \major
-  es8([ g] a[ fis])
-  b4
-  b16[-. b-. b-. cis-.]
-  d4->
-}
-
-botVoice = \relative c' {
-  \key d \major
-  c8[( f] b[ a)]
-  es4
-  es16[-. es-. es-. fis-.]
-  b4->
-}
-
-hoom = \relative c {
-  \key d \major
-  \clef bass
-  g8-. r
-  r4
-  fis8-.
-  r8
-  r4
-  b'4->
-}
-
-pah = \relative c' {
-  r8 b-.
-  r4
-  r8 g8-.
-  r16 g-. r8
-  \clef treble
-  fis'4->
-}
-
-%
-% setup for Request->Element conversion. Guru-only
-%
-
-MyStaff = \context {
-  \type "Engraver_group"
-  \name Staff
-
-  \description "Handles clefs, bar lines, keys, accidentals.  It can contain
-@code{Voice} contexts."
-
-  \consists "Output_property_engraver"
-
-  \consists "Font_size_engraver"
-
-  \consists "Volta_engraver"
-  \consists "Separating_line_group_engraver"
-  \consists "Dot_column_engraver"
-
-  \consists "Ottava_spanner_engraver"
-  \consists "Rest_collision_engraver"
-  \consists "Piano_pedal_engraver"
-  \consists "Piano_pedal_align_engraver"
-  \consists "Instrument_name_engraver"
-  \consists "Grob_pq_engraver"
-  \consists "Forbid_line_break_engraver"
-  \consists "Axis_group_engraver"
-
-  \consists "Pitch_squash_engraver"
-
-  localKeySignature = #'()
-
-  % explicitly set instrumentName, so we don't get
-  % weird effects when doing instrument names for
-  % piano staves
-
-  instrumentName = #'()
-  shortInstrumentName = #'()
-
-  \accepts "Voice"
-}
-
-
-MyVoice = \context {
-  \type "Engraver_group"
-  \name Voice
-
-  \description "
-    Corresponds to a voice on a staff.  This context handles the
-    conversion of dynamic signs, stems, beams, super- and subscripts,
-    slurs, ties, and rests.
-
-    You have to instantiate this explicitly if you want to have
-    multiple voices on the same staff."
-
-  localKeySignature = #'()
-  \consists "Font_size_engraver"
-
-  % must come before all
-  \consists "Output_property_engraver"
-  \consists "Arpeggio_engraver"
-  \consists "Multi_measure_rest_engraver"
-  \consists "Text_spanner_engraver"
-  \consists "Grob_pq_engraver"
-  \consists "Note_head_line_engraver"
-  \consists "Glissando_engraver"
-  \consists "Ligature_bracket_engraver"
-  \consists "Breathing_sign_engraver"
-  % \consists "Rest_engraver"
-  \consists "Grace_beam_engraver"
-  \consists "New_fingering_engraver"
-  \consists "Chord_tremolo_engraver"
-  \consists "Percent_repeat_engraver"
-  \consists "Slash_repeat_engraver"
-
-  %{
-    Must come before text_engraver, but after note_column engraver.
-  %}
-  \consists "Text_engraver"
-  \consists "Dynamic_engraver"
-  \consists "Fingering_engraver"
-
-  \consists "Script_column_engraver"
-  \consists "Rhythmic_column_engraver"
-  \consists "Cluster_spanner_engraver"
-  \consists "Tie_engraver"
-  \consists "Tie_engraver"
-  \consists "Tuplet_engraver"
-  \consists "Note_heads_engraver"
-  \consists "Rest_engraver"
-}
-
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-
-MyStaff = \context {
-  \MyStaff
-  \consists "Staff_symbol_engraver"
-}
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-MyStaff = \context {
-  \MyStaff
-  \consists "Clef_engraver"
-  \remove "Pitch_squash_engraver"
-}
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-MyVoice = \context {
-  \MyVoice
-  \consists "Stem_engraver"
-}
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-MyVoice = \context {
-  \MyVoice
-  \consists "Beam_engraver"
-}
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-MyVoice = \context {
-  \MyVoice
-  \consists "Phrasing_slur_engraver"
-  \consists "Slur_engraver"
-  \consists "Script_engraver"
-}
-
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-MyStaff = \context {
-  \MyStaff
-  \consists "Bar_engraver"
-  \consists "Time_signature_engraver"
-}
-
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-
-MyStaff = \context {
-  \MyStaff
-  \consists "Accidental_engraver"
-  \consists "Key_engraver"
-}
-\score {
-  \topVoice
-  \layout {
-    \context { \MyStaff }
-    \context { \MyVoice }
-  }
-}
-