ly/engraver-init.ly

   1 \version "1.9.1"
   2
   3
   4 %
   5 % setup for Request->Element conversion. Guru-only
   6 %
   7
   8 StaffContext=\translator {
   9         \type "Engraver_group_engraver"
  10         \name Staff
  11
  12         \description "Handles clefs, bar lines, keys, accidentals.  It can contain
  13 @code{Voice} contexts."
  14
  15
  16         \consists "Output_property_engraver"
  17
  18         \consists "Bar_engraver"
  19  % Bar_engraver must be first so default bars aren't overwritten
  20 % with empty ones.
  21         \consists "Font_size_engraver"
  22
  23 %       \consists "Repeat_engraver"
  24         \consists "Volta_engraver"
  25         \consists "Separating_line_group_engraver"
  26         SeparatingGroupSpanner \override #'spacing-procedure
  27           =  #Separating_group_spanner::set_spacing_rods_and_seqs
  28         \consists "Dot_column_engraver"
  29
  30         % perhaps move to Voice context?
  31         \consists "Ottava_spanner_engraver"
  32         \consists "Clef_engraver"
  33         \consists "Key_engraver"
  34         \consists "Time_signature_engraver"
  35         \consists "Staff_symbol_engraver"
  36         \consists "Collision_engraver"
  37         \consists "Rest_collision_engraver"
  38         \consists "Accidental_engraver"
  39         \consists "Piano_pedal_engraver"
  40         \consists "Instrument_name_engraver"
  41         \consists "Grob_pq_engraver"
  42         \consists "Forbid_line_break_engraver"
  43         \consistsend "Axis_group_engraver"
  44
  45         minimumVerticalExtent = #'(-6 . 6)
  46         extraVerticalExtent = ##f
  47         verticalExtent = ##f
  48         localKeySignature = #'()
  49
  50         % explicitly set instrument, so we don't get
  51         % weird effects when doing instrument names for
  52         % piano staves
  53
  54         instrument = #'()
  55         instr = #'()
  56
  57         \accepts "Voice"
  58 }
  59
  60
  61 StaffContainerContext = \translator {
  62         \type Engraver_group_engraver
  63         \consists "Axis_group_engraver"
  64         minimumVerticalExtent = ##f
  65         extraVerticalExtent = ##f
  66         verticalExtent = ##f
  67         localKeySignature = #'()
  68
  69         \accepts Staff
  70         \name StaffContainer
  71 }
  72
  73 InnerChoirStaffContext = \translator {
  74         \type "Engraver_group_engraver"
  75         \name InnerChoirStaff
  76         \consists "System_start_delimiter_engraver"
  77         systemStartDelimiter = #'SystemStartBracket
  78         localKeySignature = #'()
  79
  80         \accepts "Staff"
  81         \accepts "RhythmicStaff"
  82         \accepts "GrandStaff"
  83         \accepts "PianoStaff"
  84         \accepts "Lyrics"
  85         \accepts "ChordNames"
  86 }
  87
  88 ChoirStaffContext = \translator {
  89         \InnerChoirStaffContext
  90         \name ChoirStaff
  91
  92         \description "Identical to @code{StaffGroup} except that the
  93     contained staves are not connected vertically."
  94
  95         \accepts "InnerChoirStaff"
  96         \accepts "InnerStaffGroup"
  97 }
  98
  99
 100 RhythmicStaffContext=\translator{
 101         \type "Engraver_group_engraver"
 102
 103         \consists "Output_property_engraver"
 104
 105 \description  "
 106     A context like @code{Staff} but for printing rhythms.  Pitches are
 107     ignored; the notes are printed on one line.
 108 "
 109         minimumVerticalExtent = ##f
 110         extraVerticalExtent = ##f
 111         verticalExtent = ##f
 112         localKeySignature = #'()
 113
 114         \consists "Pitch_squash_engraver"
 115         \consists "Separating_line_group_engraver"
 116         \name RhythmicStaff
 117         \alias "Staff"
 118
 119         BarLine \override #'bar-size = #4
 120         VoltaBracket \override #'minimum-space =  #15  % urg, in \pt
 121         VoltaBracket \override #'padding =  #5  % urg, in \pt
 122         StaffSymbol \override #'line-count = #1
 123
 124         Stem \override #'neutral-direction = #1
 125         Beam \override #'neutral-direction = #1
 126 %       \consists "Repeat_engraver"
 127         \consists "Dot_column_engraver"
 128         \consists "Volta_engraver"
 129         \consists "Bar_engraver"
 130         \consists "Time_signature_engraver"
 131         \consists "Staff_symbol_engraver"
 132         \consists "Instrument_name_engraver"
 133         \consistsend "Axis_group_engraver"
 134         \accepts "Voice"
 135 }
 136
 137
 138 VoiceContext = \translator {
 139         \type "Engraver_group_engraver"
 140         \name Voice
 141
 142 \description "
 143     Corresponds to a voice on a staff.  This context handles the
 144     conversion of dynamic signs, stems, beams, super- and subscripts,
 145     slurs, ties, and rests.
 146
 147     You have to instantiate this explicitly if you want to have
 148     multiple voices on the same staff."
 149
 150         localKeySignature = #'()
 151         \consists "Font_size_engraver"
 152
 153         % must come before all
 154         \consists "Voice_devnull_engraver"
 155         \consists "Output_property_engraver"
 156         \consists "Arpeggio_engraver"
 157         \consists "Multi_measure_rest_engraver"
 158         \consists "Text_spanner_engraver"
 159         \consists "Grob_pq_engraver"
 160
 161         \consists "Note_head_line_engraver"
 162         \consists "Glissando_engraver"
 163         \consists "Ligature_bracket_engraver"
 164         \consists "Breathing_sign_engraver"
 165         % \consists "Rest_engraver"
 166         \consists "Stem_engraver"
 167         \consists "Beam_engraver"
 168         \consists "Grace_beam_engraver"
 169         \consists "Auto_beam_engraver"
 170         \consists "New_fingering_engraver"
 171         \consists "Chord_tremolo_engraver"
 172         \consists "Percent_repeat_engraver"
 173         \consists "Slash_repeat_engraver"
 174         \consists "Melisma_engraver"
 175
 176 %{
 177  Must come before text_engraver, but after note_column engraver.
 178
 179 %}
 180         \consists "Text_engraver"
 181         \consists "Dynamic_engraver"
 182         \consists "Fingering_engraver"
 183
 184         \consists "Script_engraver"
 185         \consists "Script_column_engraver"
 186         \consists "Rhythmic_column_engraver"
 187         \consists "Phrasing_slur_engraver"
 188         \consists "Cluster_spanner_engraver"
 189         \consists "Slur_engraver"
 190         \consists "Tie_engraver"
 191         \consists "Tuplet_engraver"
 192         \consists "A2_engraver"
 193
 194         \consists "Skip_event_swallow_translator"
 195         \accepts Thread % bug if you leave out this!
 196 }
 197
 198 ThreadContext = \translator{
 199         \type Engraver_group_engraver
 200         \name Thread
 201         localKeySignature = #'()
 202 \description "
 203     Handles note heads, and is contained in the Voice context.  You
 204     have to instantiate this explicitly if you want to adjust the
 205     style of individual note heads.
 206 "
 207         \consists "Font_size_engraver"
 208         \consists "Thread_devnull_engraver"
 209         \consists "Note_heads_engraver"
 210         \consists "Rest_engraver"
 211
 212         % why here ?
 213         \consists "Output_property_engraver"
 214 }
 215
 216
 217
 218 GrandStaffContext=\translator{
 219         \type "Engraver_group_engraver"
 220         \name GrandStaff
 221         localKeySignature = #'()
 222
 223         \description " A group of staffs, with a brace on the left
 224     side, grouping the staves together.  The bar lines of the
 225     contained staves are connected vertically.  "
 226
 227         \consists "Span_bar_engraver"
 228         \consists "Span_arpeggio_engraver"
 229         \consists "System_start_delimiter_engraver"
 230         systemStartDelimiter = #'SystemStartBrace
 231
 232         \accepts "Staff"
 233 }
 234
 235 PianoStaffContext = \translator{
 236         \GrandStaffContext
 237         \name "PianoStaff"
 238         \alias "GrandStaff"
 239 \description "
 240     Just like @code{GrandStaff} but with @code{minVerticalAlign} set
 241     equal to @code{maxVerticalAlign} so that interstaff beaming and
 242     slurring can be used."
 243         verticalAlignmentChildCallback = #Align_interface::fixed_distance_alignment_callback
 244         VerticalAlignment \override #'forced-distance = #12
 245         VerticalAlignment \override #'self-alignment-Y = #0
 246
 247         \consists "Vertical_align_engraver"
 248         \consists "Instrument_name_engraver"
 249
 250         instrument = #'()
 251         instr = #'()
 252
 253 %       \consistsend "Axis_group_engraver"
 254 }
 255
 256 InnerStaffGroupContext= \translator {
 257         \type "Engraver_group_engraver"
 258         \name InnerStaffGroup
 259         localKeySignature = #'()
 260
 261         \consists "Span_bar_engraver"
 262         \consists "Span_arpeggio_engraver"
 263         \consists "Output_property_engraver"
 264         systemStartDelimiter = #'SystemStartBracket
 265
 266         \consists "System_start_delimiter_engraver"
 267         \accepts "Staff"
 268         \accepts "RhythmicStaff"
 269         \accepts "GrandStaff"
 270         \accepts "PianoStaff"
 271         \accepts "TabStaff"
 272         \accepts "Lyrics"
 273         \accepts "ChordNames"
 274 }
 275
 276 StaffGroupContext = \translator {
 277         \InnerStaffGroupContext
 278         \name StaffGroup
 279
 280         \description
 281
 282         " Groups staffs while adding a bracket on the left side,
 283         grouping the staves together.  The bar lines of the contained
 284         staves are connected vertically.
 285 "
 286
 287         \accepts "InnerChoirStaff"
 288         \accepts "ChoirStaff"
 289         \accepts "InnerStaffGroup"
 290         \accepts "FiguredBass"
 291 }
 292
 293
 294 % UGH! JUNKME
 295 LyricsVoiceContext= \translator{
 296         \type "Engraver_group_engraver"
 297         \consistsend "Hara_kiri_engraver"
 298         minimumVerticalExtent = #'(-1.2 . 2.4)
 299         extraVerticalExtent = ##f
 300         verticalExtent = ##f
 301
 302         \description "
 303     Corresponds to a voice with lyrics.  Handles the printing of a
 304     single line of lyrics.
 305 "
 306
 307         \name LyricsVoice
 308         \consists "Separating_line_group_engraver"
 309         \consists "Lyric_engraver"
 310         \consists "Extender_engraver"
 311         \consists "Hyphen_engraver"
 312         \consists "Stanza_number_engraver"
 313         \consists "Skip_event_swallow_translator"
 314         phrasingPunctuation = #".,:!?\""
 315         SeparationItem \set #'padding = #0.5
 316 }
 317 NoteNamesContext = \translator {
 318         \type "Engraver_group_engraver"
 319         \name NoteNames
 320         \consistsend "Axis_group_engraver"
 321
 322         minimumVerticalExtent = ##f
 323         extraVerticalExtent = ##f
 324         verticalExtent = ##f
 325
 326
 327         \consists "Note_name_engraver"
 328         \consists "Separating_line_group_engraver"
 329 }
 330
 331 LyricsContext = \translator {
 332         \type "Engraver_group_engraver"
 333         \name Lyrics
 334         \description  "Typesets lyrics."
 335         %% To get folded repeats right.
 336         \consists Vertical_align_engraver
 337
 338 %       \consistsend "Hara_kiri_engraver"
 339         minimumVerticalExtent = ##f
 340         extraVerticalExtent = ##f
 341         verticalExtent = ##f
 342
 343         \accepts "LyricsVoice"
 344 }
 345
 346
 347 ChordNamesContext = \translator {
 348         \type "Engraver_group_engraver"
 349         \name ChordNames
 350         \description "Typesets chord names."
 351
 352         \consists "Rest_swallow_translator"
 353         \consists "Output_property_engraver"
 354         \consists "Separating_line_group_engraver"
 355         \consists "Chord_name_engraver"
 356         \consists "Skip_event_swallow_translator"
 357         \consistsend "Hara_kiri_engraver"
 358
 359         minimumVerticalExtent = #'(0 . 2.5)
 360         extraVerticalExtent = ##f
 361         verticalExtent = ##f
 362 }
 363
 364
 365 RemoveEmptyStaffContext = \translator {
 366         \StaffContext
 367         \remove "Axis_group_engraver"
 368         \consistsend "Hara_kiri_engraver"
 369         \accepts "Voice"
 370
 371         % hara kiri & auto knee don't work together.
 372         Beam \override #'auto-knee-gap = #'()
 373 }
 374
 375 RemoveEmptyStaffContext = \translator {
 376         \RemoveEmptyStaffContext
 377         \accepts "VaticanaVoice"
 378         \accepts "GregorianTranscriptionVoice"
 379 }
 380
 381 ScoreContext = \translator {
 382         \type Score_engraver
 383         \name Score
 384         localKeySignature = #'()
 385
 386         \description "This is the top level notation context.  No
 387     other context can contain a @code{Score} context.  This context
 388     handles the administration of time signatures.  It also makes sure
 389     that items such as clefs, time signatures, and key-signatures are
 390     aligned across staves.
 391
 392     You cannot explicitly instantiate a Score context (since it is
 393     not contained in any other context).  It is instantiated
 394     automatically when an output definition (a @code{\score} or
 395     @code{\paper} block) is processed."
 396
 397         \consists "Repeat_acknowledge_engraver"
 398         \consists "Staff_collecting_engraver"
 399
 400         % move the alias along with the engraver.
 401
 402         %% TODO? add this alias from Timing_engraver::initialize() ?
 403         \consists "Timing_engraver"
 404         \alias "Timing"
 405
 406         \consists "Output_property_engraver"
 407         \consists "System_start_delimiter_engraver"
 408         \consists "Mark_engraver"
 409         \consists "Metronome_mark_engraver"
 410         \consists "Break_align_engraver"
 411         \consists "Spacing_engraver"
 412         \consists "Vertical_align_engraver"
 413         \consists "Lyric_phrasing_engraver"
 414         \consists "Bar_number_engraver"
 415         \consists "Span_arpeggio_engraver"
 416
 417         \accepts "Staff"
 418         \accepts "TabStaff"
 419         \accepts "VaticanaStaff"
 420         \accepts "GregorianTranscriptionStaff"
 421         \accepts "StaffContainer"
 422         \accepts "StaffGroup"
 423         \accepts "RhythmicStaff"
 424         \accepts "Lyrics"
 425         \accepts "ChordNames"
 426         \accepts "GrandStaff"
 427         \accepts "ChoirStaff"
 428         \accepts "PianoStaff"
 429         \accepts "NoteNames"
 430         \accepts "FiguredBass"
 431
 432         soloText = #"Solo"
 433         soloIIText = #"Solo II"
 434         aDueText = #"a2"
 435         soloADue = ##t
 436         splitInterval = #'(0 . 1)
 437         changeMoment = #`(,(ly:make-moment 0 0) . ,(ly:make-moment 1 512))
 438         systemStartDelimiter =#'SystemStartBar
 439
 440         melismaBusyProperties = #'(melismaBusy slurMelismaBusy tieMelismaBusy beamMelismaBusy)
 441
 442         clefGlyph = #"clefs-G"
 443         clefPosition = #-2
 444         centralCPosition = #-6
 445
 446         automaticPhrasing = ##t
 447         automaticMelismata = ##t
 448
 449         defaultBarType = #"|"
 450         barNumberVisibility = #default-bar-number-visibility
 451         automaticBars = ##t
 452
 453         explicitClefVisibility = #all-visible
 454         explicitKeySignatureVisibility = #all-visible
 455         autoBeamSettings = #default-auto-beam-settings
 456         autoBeaming = ##t
 457         scriptDefinitions = #default-script-alist
 458
 459         verticalAlignmentChildCallback = #Align_interface::alignment_callback
 460
 461         pedalSustainStrings = #'("Ped." "*Ped." "*")
 462         pedalSustainStyle = #'text
 463         pedalUnaCordaStrings = #'("una corda" "" "tre corde")
 464         pedalUnaCordaStyle = #'text
 465
 466         %% These are in ordinary italic font, including the *,
 467         %% but they are unlikely to be used,
 468         %% as the default pedal-style for SostenutoPedal is 'mixed':
 469         %% i.e.  Sost. Ped_____________________
 470         pedalSostenutoStrings = #'("Sost. Ped." "*Sost. Ped." "*")
 471         pedalSostenutoStyle = #'mixed
 472
 473         fingeringOrientations = #'(up down)
 474         tupletNumberFormatFunction = #denominator-tuplet-formatter
 475
 476         subdivideBeams = ##f
 477         allowBeamBreak = ##f
 478         extraNatural = ##t
 479         autoAccidentals = #'(Staff (same-octave . 0))
 480         autoCautionaries = #'()
 481
 482        keyAccidentalOrder = #'(
 483          (6 . -1) (2  . -1) (5 . -1 ) (1  . -1) (4  . -1) (0  . -1) (3  . -1)
 484          (3  . 1) (0 . 1) (4 . 1) (1 . 1) (5 . 1) (2 . 1) (6 . 1)
 485          (6 . -2) (2  . -2) (5 . -2 ) (1  . -2) (4  . -2) (0  . -2) (3 . -2)
 486          (3  . 2) (0 . 2) (4 . 2) (2 . 2) (5 . 2) (2 . 2) (6 . 2)
 487         )
 488         breakAlignOrder = #'(
 489           instrument-name
 490           left-edge
 491           ambitus
 492           breathing-sign
 493           clef
 494           staff-bar
 495           key-signature
 496           time-signature
 497           custos
 498         )
 499         barCheckSynchronize = ##t
 500
 501         %% chord names:
 502         chordNameFunction = #ignatzek-chord-names
 503         majorSevenSymbol = #whiteTriangleMarkup
 504         chordNameSeparator = #(make-simple-markup  "/")
 505         chordNameExceptions = #ignatzekExceptions
 506         chordNoteNamer = #'()
 507         chordRootNamer = #note-name->markup
 508
 509         chordNameExceptionsFull = #fullJazzExceptions
 510         chordNameExceptionsPartial = #partialJazzExceptions
 511
 512         %% tablature:
 513         stringOneTopmost = ##t
 514         highStringOne = ##t
 515
 516         %% One may change the strings tuning as following :
 517         %% The lenght of the list must be equal to the number of string
 518         stringTunings   = #guitar-tunings
 519         tablatureFormat = #fret-number-tablature-format
 520
 521         %%
 522         bassFigureFormatFunction = #make-bass-figure-markup
 523         metronomeMarkFormatter = #make-metronome-markup
 524
 525
 526         graceSettings = #`#(
 527                  (Voice Stem direction 1)
 528
 529                  ;; TODO: should take from existing definition.
 530                  ;; c&p from define-grobs.scm
 531
 532                  (Voice Stem lengths ,(map (lambda (x) (* 0.8 x)) '(3.5 3.5 3.5 4.5 5.0)))
 533                  (Voice Stem stem-shorten (0.4 0))
 534                  (Voice Stem font-relative-size -1)
 535                  (Voice NoteHead font-relative-size -1)
 536                  (Voice Dots font-relative-size -1)
 537                  (Voice Stem beamed-lengths
 538                   ,(map (lambda (x) (* 0.8 x)) '(3.26)))
 539                  (Voice Stem beamed-minimum-free-lengths
 540                   ,(map (lambda (x) (* 0.8 x)) '(2.5 2.0 1.5)))
 541                  (Voice Stem beamed-extreme-minimum-free-lengths
 542                   ,(map (lambda (x) (* 0.8 x)) '(1.83 1.5)))
 543
 544                  (Voice Stem no-stem-extend #t)
 545                  (Voice Beam thickness 0.384)
 546                  (Voice Beam space-function ,(lambda (beam mult)
 547                                                 (* 0.8 (Beam::space_function
 548                                                         beam mult))))
 549                  (Voice Beam position-callbacks (,Beam::least_squares
 550                                                     ,Beam::check_concave
 551                                                     ,Beam::slope_damping))
 552                  (Staff Accidental font-relative-size -2)
 553                  (Voice Slur direction -1)
 554         )
 555
 556         \grobdescriptions #all-grob-descriptions
 557 }
 558
 559 OrchestralScoreContext= \translator {
 560         \ScoreContext
 561 }
 562
 563 EasyNotation =  \translator {
 564         \ScoreContext
 565         NoteHead \override #'molecule-callback = #Note_head::brew_ez_molecule
 566 }
 567
 568
 569
 570 FiguredBassContext = \translator {
 571         \type "Engraver_group_engraver"
 572         \name FiguredBass
 573         \consists "Figured_bass_engraver"
 574         \consists "Rest_swallow_translator"
 575         \consists "Note_swallow_translator"
 576         \consists "Separating_line_group_engraver"
 577
 578         \consistsend "Hara_kiri_engraver"
 579 }
 580
 581 TabVoiceContext =   \translator {
 582       \VoiceContext
 583       \name "TabVoice"
 584       \denies "Thread"
 585       \consists "Tab_note_heads_engraver"
 586       \remove "Fingering_engraver"
 587       \remove "New_fingering_engraver"
 588
 589       Slur \override #'font-family       = #'roman
 590       Slur \override #'molecule-callback = #hammer-molecule-callback
 591       Slur \override #'direction    = #-1
 592
 593       % Draws all stems/beams out of the staff (and not in the middle of the staff !)
 594       % This feature is now disabled because most of the tab does not use it.
 595       %Beam \override #'damping = #100000
 596       %Stem \override #'up-to-staff = ##t
 597
 598       % No accidental in tablature !
 599       \remove Accidental_engraver
 600 }
 601
 602 TabStaffContext = \translator {
 603       \StaffContext
 604       \alias "Staff"
 605       \name "TabStaff"
 606       \denies "Voice"
 607
 608       \description "Context for generating tablature. [DOCME]"
 609
 610       \accepts "TabVoice"
 611
 612       % 6 strings
 613       StaffSymbol \override #'line-count  = #6
 614       StaffSymbol \override #'staff-space = #1.5
 615
 616      % Don't draw stems over the tablature figures !
 617       Stem \override #'avoid-note-head = ##t
 618
 619       % No accidental in tablature !
 620       \remove Accidental_engraver
 621       \remove Key_engraver
 622
 623       % Special "TAB" clef
 624       clefGlyph = #"clefs-tab"
 625       clefPosition = #0
 626 }
 627
 628 % TODO: Gregorian Chant contexts should be moved to gregorian-init.ly,
 629 % but this does not work (is this a bug or intended behaviour?):
 630 %
 631 % If I try to do so, I get "error: unknown escaped string:
 632 % `\VaticanaStaffContext'" in params-init.ly.  If I also move
 633 % "\translator { \Vaticana*Context }" from params-init.ly to the end
 634 % of gregorian-init.ly, then I get "error: parse error, unexpected
 635 % TRANSLATOR: \translator { \VaticanaStaffContext }" in
 636 % gregorian-init.ly. --jr
 637
 638 VaticanaVoiceContext = \translator {
 639   \VoiceContext
 640   \name "VaticanaVoice"
 641   \alias "Voice"
 642   \description "Same as @code{Voice} context, except that it is accommodated for tyepsetting Gregorian Chant in the notational style of Editio Vaticana."
 643
 644   % We can not remove Slur_engraver, since \addlyrics depends on it.
 645   % Instead, we make the grob transparent.
 646   % Unfortunately, this gives us a lot of warnings ("Degenerate bow:
 647   % infinite steepness reqd"), since in ligatures, all note heads are in
 648   % the same paper column such that the (transparent) slurs eventually may
 649   % start and end in the same column.
 650   Slur \override #'transparent = ##t
 651
 652   % We can not remove Stem_engraver, since slurs depend on stems.  If
 653   % we try anyway, lily will crash in slur.scm:16:6: "Wrong type argument
 654   % in position 1 (expecting grob): ()".
 655   % As a workaround, we make the grob transparent.
 656   Stem \set #'transparent = ##t
 657
 658   % Since we do not remove stems, but only make it transparent, we have
 659   % to set the length to 0.0.  Otherwise, articulation marks (such as
 660   % ictus, circulus or accentus) may be vertically placed quite away from
 661   % the note head.
 662   Stem \set #'length = #'0.0
 663
 664   \remove "Ligature_bracket_engraver"
 665   \consists "Vaticana_ligature_engraver"
 666
 667   % Set default head for notes outside of \[ \].
 668   NoteHead \set #'style = #'vaticana_punctum
 669
 670   % Put some space before and after divisiones.
 671   % FIXME: This does not seem to show any effect.
 672   Script \set #'padding = #0.5
 673
 674   % There are no beams in Gregorian Chant notation.
 675   autobeaming = ##f
 676
 677   % Prepare TextSpanner for \episem{Initium|Finis} use.
 678   TextSpanner \set #'style = #'line
 679   TextSpanner \set #'edge-height = #'(0 . 0)
 680   TextSpanner \set #'padding = #0.5
 681   TextSpanner \set #'enclose-bounds = ##t
 682   TextSpanner \set #'edge-text = #'("" . "")
 683 }
 684
 685 VaticanaStaffContext = \translator {
 686   \StaffContext
 687   \name "VaticanaStaff"
 688   \alias "Staff"
 689   \denies "Voice"
 690   \accepts "VaticanaVoice"
 691   \description "Same as @code{Staff} context, except that it is accommodated for tyepsetting Gregorian Chant in the notational style of Editio Vaticana."
 692
 693   \remove "Time_signature_engraver"
 694   \consists "Custos_engraver"
 695
 696   % We can not remove Bar_engraver; otherwise clefs and custodes will
 697   % not show up any more among other line breaking issues.
 698   % Instead, we make the grob transparent.
 699   BarLine \set #'transparent = ##t
 700
 701   StaffSymbol \set #'line-count = #4
 702   StaffSymbol \set #'thickness = #0.6
 703
 704   % FIXME: unit on StaffSymbol's width should be \linewidth.
 705   % StaffSymbol \set #'width = #60.0
 706
 707   % Choose vaticana do clef on 3rd line as default.
 708   clefGlyph = #"clefs-vaticana_do"
 709   centralCPosition = #1
 710   clefPosition = #1
 711   clefOctavation = #0
 712
 713   % Select vaticana style font.
 714   KeySignature \set #'style = #'vaticana
 715   Accidental \set #'style = #'vaticana
 716   Custos \set #'style = #'vaticana
 717   Custos \set #'neutral-position = #3
 718   Custos \set #'neutral-direction = #-1
 719   Custos \set #'adjust-if-on-staffline = ##t
 720
 721   % Score.timing = ##f
 722   % Score.barAlways = ##t
 723 }
 724
 725 GregorianTranscriptionVoiceContext = \translator {
 726   \VoiceContext
 727   \name "GregorianTranscriptionVoice"
 728   \alias "Voice"
 729
 730   % Removing ligature bracket engraver without replacing it by some
 731   % other ligature engraver would cause a "Junking event: `LigatureEvent'"
 732   % warning for every "\[" and "\]".  Therefore, we make the grob
 733   % transparent instead.
 734   LigatureBracket \set #'transparent = ##t
 735
 736   % We can not remove Slur_engraver, since \addlyrics depends on it.
 737   % Instead, we make the grob transparent.
 738   % Unfortunately, this gives us a lot of warnings ("Degenerate bow:
 739   % infinite steepness reqd"), since in ligatures, all note heads are in
 740   % the same paper column such that the (transparent) slurs eventually may
 741   % start and end in the same column.
 742   Slur \override #'transparent = ##t
 743
 744   % We can not remove Stem_engraver, since slurs depend on stems.  If
 745   % we try anyway, lily will crash in slur.scm:16:6: "Wrong type argument
 746   % in position 1 (expecting grob): ()".
 747   % As a workaround, we make the grob transparent.
 748   Stem \set #'transparent = ##t
 749
 750   % Since we do not remove stems, but only make it transparent, we have
 751   % to set the length to 0.0.  Otherwise, articulation marks (such as
 752   % ictus, circulus or accentus) may be vertically placed quite away from
 753   % the note head.
 754   Stem \set #'length = #'0.0
 755
 756   % Put some space before and after divisiones.
 757   % FIXME: This does not seem to show any effect.
 758   Script \set #'padding = #0.5
 759
 760   % There are no beams in Gregorian Chant notation.
 761   autobeaming = ##f
 762
 763   % Prepare TextSpanner for \episem{Initium|Finis} use.
 764   TextSpanner \set #'style = #'line
 765   TextSpanner \set #'edge-height = #'(0 . 0)
 766   TextSpanner \set #'padding = #0.5
 767   TextSpanner \set #'enclose-bounds = ##t
 768   TextSpanner \set #'edge-text = #'("" . "")
 769 }
 770
 771 GregorianTranscriptionStaffContext = \translator {
 772   \StaffContext
 773   \name "GregorianTranscriptionStaff"
 774   \alias "Staff"
 775   \denies "Voice"
 776   \accepts "GregorianTranscriptionVoice"
 777
 778   % We can not remove Bar_engraver; otherwise clefs and custodes will
 779   % not show up any more among other line breaking issues.
 780   % Instead, we make the grob transparent.
 781   BarLine \set #'transparent = ##t
 782 }