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
 441         clefGlyph = #"clefs-G"
 442         clefPosition = #-2
 443         centralCPosition = #-6
 444
 445         automaticPhrasing = ##t
 446         automaticMelismata = ##t
 447
 448         defaultBarType = #"|"
 449         barNumberVisibility = #default-bar-number-visibility
 450         automaticBars = ##t
 451
 452         explicitClefVisibility = #all-visible
 453         explicitKeySignatureVisibility = #all-visible
 454         autoBeamSettings = #default-auto-beam-settings
 455         autoBeaming = ##t
 456         scriptDefinitions = #default-script-alist
 457
 458         verticalAlignmentChildCallback = #Align_interface::alignment_callback
 459
 460         pedalSustainStrings = #'("Ped." "*Ped." "*")
 461         pedalSustainStyle = #'text
 462         pedalUnaCordaStrings = #'("una corda" "" "tre corde")
 463         pedalUnaCordaStyle = #'text
 464
 465         %% These are in ordinary italic font, including the *,
 466         %% but they are unlikely to be used,
 467         %% as the default pedal-style for SostenutoPedal is 'mixed':
 468         %% i.e.  Sost. Ped_____________________
 469         pedalSostenutoStrings = #'("Sost. Ped." "*Sost. Ped." "*")
 470         pedalSostenutoStyle = #'mixed
 471
 472         fingeringOrientations = #'(up down)
 473         tupletNumberFormatFunction = #denominator-tuplet-formatter
 474
 475         subdivideBeams = ##f
 476         allowBeamBreak = ##f
 477         extraNatural = ##t
 478         autoAccidentals = #'(Staff (same-octave . 0))
 479         autoCautionaries = #'()
 480
 481        keyAccidentalOrder = #'(
 482          (6 . -1) (2  . -1) (5 . -1 ) (1  . -1) (4  . -1) (0  . -1) (3  . -1)
 483          (3  . 1) (0 . 1) (4 . 1) (1 . 1) (5 . 1) (2 . 1) (6 . 1)
 484          (6 . -2) (2  . -2) (5 . -2 ) (1  . -2) (4  . -2) (0  . -2) (3 . -2)
 485          (3  . 2) (0 . 2) (4 . 2) (2 . 2) (5 . 2) (2 . 2) (6 . 2)
 486         )
 487         breakAlignOrder = #'(
 488           instrument-name
 489           left-edge
 490           ambitus
 491           breathing-sign
 492           clef
 493           staff-bar
 494           key-signature
 495           time-signature
 496           custos
 497         )
 498         barCheckSynchronize = ##t
 499
 500         %% chord names:
 501         chordNameFunction = #ignatzek-chord-names
 502         majorSevenSymbol = #whiteTriangleMarkup
 503         chordNameSeparator = #(make-simple-markup  "/")
 504         chordNameExceptions = #ignatzekExceptions
 505         chordNoteNamer = #'()
 506         chordRootNamer = #note-name->markup
 507
 508         chordNameExceptionsFull = #fullJazzExceptions
 509         chordNameExceptionsPartial = #partialJazzExceptions
 510
 511         %% tablature:
 512         stringOneTopmost = ##t
 513         highStringOne = ##t
 514
 515         %% One may change the strings tuning as following :
 516         %% The lenght of the list must be equal to the number of string
 517         stringTunings   = #guitar-tunings
 518         tablatureFormat = #fret-number-tablature-format
 519
 520         %%
 521         bassFigureFormatFunction = #make-bass-figure-markup
 522         metronomeMarkFormatter = #make-metronome-markup
 523
 524         graceSettings = #`#(
 525                  (Voice Stem direction 1)
 526                  (Voice Stem lengths ,(map (lambda (x) (* 0.8 x)) '(2.5 2.5 3.0 4.0 5.0)))
 527                  (Voice Stem stem-shorten (0.4 0))
 528                  (Voice Stem font-relative-size -1)
 529                  (Voice NoteHead font-relative-size -1)
 530                  (Voice Dots font-relative-size -1)
 531                  (Voice Stem beamed-lengths
 532                   ,(map (lambda (x) (* 0.8 x)) '(3.26)))
 533                  (Voice Stem beamed-minimum-free-lengths
 534                   ,(map (lambda (x) (* 0.8 x)) '(2.5 2.0 1.5)))
 535                  (Voice Stem beamed-extreme-minimum-free-lengths
 536                   ,(map (lambda (x) (* 0.8 x)) '(1.83 1.5)))
 537
 538                  (Voice Stem no-stem-extend #t)
 539                  (Voice Beam thickness 0.384)
 540                  (Voice Beam space-function ,(lambda (beam mult)
 541                                                 (* 0.8 (Beam::space_function
 542                                                         beam mult))))
 543                  (Voice Beam position-callbacks (,Beam::least_squares
 544                                                     ,Beam::check_concave
 545                                                     ,Beam::slope_damping))
 546                  (Staff Accidental font-relative-size -2)
 547                  (Voice Slur direction -1)
 548         )
 549
 550         \grobdescriptions #all-grob-descriptions
 551 }
 552
 553 OrchestralScoreContext= \translator {
 554         \ScoreContext
 555 }
 556
 557 EasyNotation =  \translator {
 558         \ScoreContext
 559         NoteHead \override #'molecule-callback = #Note_head::brew_ez_molecule
 560 }
 561
 562
 563
 564 FiguredBassContext = \translator {
 565         \type "Engraver_group_engraver"
 566         \name FiguredBass
 567         \consists "Figured_bass_engraver"
 568         \consists "Rest_swallow_translator"
 569         \consists "Note_swallow_translator"
 570         \consists "Separating_line_group_engraver"
 571
 572         \consistsend "Hara_kiri_engraver"
 573 }
 574
 575 TabVoiceContext =   \translator {
 576       \VoiceContext
 577       \name "TabVoice"
 578       \denies "Thread"
 579       \consists "Tab_note_heads_engraver"
 580       \remove "Fingering_engraver"
 581       \remove "New_fingering_engraver"
 582
 583       Slur \override #'font-family       = #'roman
 584       Slur \override #'molecule-callback = #hammer-molecule-callback
 585       Slur \override #'direction    = #-1
 586
 587       % Draws all stems/beams out of the staff (and not in the middle of the staff !)
 588       % This feature is now disabled because most of the tab does not use it.
 589       %Beam \override #'damping = #100000
 590       %Stem \override #'up-to-staff = ##t
 591
 592       % No accidental in tablature !
 593       \remove Accidental_engraver
 594 }
 595
 596 TabStaffContext = \translator {
 597       \StaffContext
 598       \alias "Staff"
 599       \name "TabStaff"
 600       \denies "Voice"
 601
 602       \description "Context for generating tablature. [DOCME]"
 603
 604       \accepts "TabVoice"
 605
 606       % 6 strings
 607       StaffSymbol \override #'line-count  = #6
 608       StaffSymbol \override #'staff-space = #1.5
 609
 610      % Don't draw stems over the tablature figures !
 611       Stem \override #'avoid-note-head = ##t
 612
 613       % No accidental in tablature !
 614       \remove Accidental_engraver
 615       \remove Key_engraver
 616
 617       % Special "TAB" clef
 618       clefGlyph = #"clefs-tab"
 619       clefPosition = #0
 620 }
 621
 622 % TODO: Gregorian Chant contexts should be moved to gregorian-init.ly,
 623 % but this does not work (is this a bug or intended behaviour?):
 624 %
 625 % If I try to do so, I get "error: unknown escaped string:
 626 % `\VaticanaStaffContext'" in params-init.ly.  If I also move
 627 % "\translator { \Vaticana*Context }" from params-init.ly to the end
 628 % of gregorian-init.ly, then I get "error: parse error, unexpected
 629 % TRANSLATOR: \translator { \VaticanaStaffContext }" in
 630 % gregorian-init.ly. --jr
 631
 632 VaticanaVoiceContext = \translator {
 633   \VoiceContext
 634   \name "VaticanaVoice"
 635   \alias "Voice"
 636   \description "Same as @code{Voice} context, except that it is accommodated for tyepsetting Gregorian Chant in the notational style of Editio Vaticana."
 637
 638   % We can not remove Slur_engraver, since \addlyrics depends on it.
 639   % Instead, we make the grob transparent.
 640   % Unfortunately, this gives us a lot of warnings ("Degenerate bow:
 641   % infinite steepness reqd"), since in ligatures, all note heads are in
 642   % the same paper column such that the (transparent) slurs eventually may
 643   % start and end in the same column.
 644   Slur \override #'transparent = ##t
 645
 646   % We can not remove Stem_engraver, since slurs depend on stems.  If
 647   % we try anyway, lily will crash in slur.scm:16:6: "Wrong type argument
 648   % in position 1 (expecting grob): ()".
 649   % As a workaround, we make the grob transparent.
 650   Stem \set #'transparent = ##t
 651
 652   % Since we do not remove stems, but only make it transparent, we have
 653   % to set the length to 0.0.  Otherwise, articulation marks (such as
 654   % ictus, circulus or accentus) may be vertically placed quite away from
 655   % the note head.
 656   Stem \set #'length = #'0.0
 657
 658   \remove "Ligature_bracket_engraver"
 659   \consists "Vaticana_ligature_engraver"
 660
 661   % Set default head for notes outside of \[ \].
 662   NoteHead \set #'style = #'vaticana_punctum
 663
 664   % Put some space before and after divisiones.
 665   % FIXME: This does not seem to show any effect.
 666   Script \set #'padding = #0.5
 667
 668   % There are no beams in Gregorian Chant notation.
 669   autobeaming = ##f
 670
 671   % Prepare TextSpanner for \episem{Initium|Finis} use.
 672   TextSpanner \set #'style = #'line
 673   TextSpanner \set #'edge-height = #'(0 . 0)
 674   TextSpanner \set #'padding = #0.5
 675   TextSpanner \set #'enclose-bounds = ##t
 676   TextSpanner \set #'edge-text = #'("" . "")
 677 }
 678
 679 VaticanaStaffContext = \translator {
 680   \StaffContext
 681   \name "VaticanaStaff"
 682   \alias "Staff"
 683   \denies "Voice"
 684   \accepts "VaticanaVoice"
 685   \description "Same as @code{Staff} context, except that it is accommodated for tyepsetting Gregorian Chant in the notational style of Editio Vaticana."
 686
 687   \remove "Time_signature_engraver"
 688   \consists "Custos_engraver"
 689
 690   % We can not remove Bar_engraver; otherwise clefs and custodes will
 691   % not show up any more among other line breaking issues.
 692   % Instead, we make the grob transparent.
 693   BarLine \set #'transparent = ##t
 694
 695   StaffSymbol \set #'line-count = #4
 696   StaffSymbol \set #'thickness = #0.6
 697
 698   % FIXME: unit on StaffSymbol's width should be \linewidth.
 699   % StaffSymbol \set #'width = #60.0
 700
 701   % Choose vaticana do clef on 3rd line as default.
 702   clefGlyph = #"clefs-vaticana_do"
 703   centralCPosition = #1
 704   clefPosition = #1
 705   clefOctavation = #0
 706
 707   % Select vaticana style font.
 708   KeySignature \set #'style = #'vaticana
 709   Accidental \set #'style = #'vaticana
 710   Custos \set #'style = #'vaticana
 711   Custos \set #'neutral-position = #3
 712   Custos \set #'neutral-direction = #-1
 713   Custos \set #'adjust-if-on-staffline = ##t
 714
 715   % Score.timing = ##f
 716   % Score.barAlways = ##t
 717 }
 718
 719 GregorianTranscriptionVoiceContext = \translator {
 720   \VoiceContext
 721   \name "GregorianTranscriptionVoice"
 722   \alias "Voice"
 723
 724   % Removing ligature bracket engraver without replacing it by some
 725   % other ligature engraver would cause a "Junking event: `LigatureEvent'"
 726   % warning for every "\[" and "\]".  Therefore, we make the grob
 727   % transparent instead.
 728   LigatureBracket \set #'transparent = ##t
 729
 730   % We can not remove Slur_engraver, since \addlyrics depends on it.
 731   % Instead, we make the grob transparent.
 732   % Unfortunately, this gives us a lot of warnings ("Degenerate bow:
 733   % infinite steepness reqd"), since in ligatures, all note heads are in
 734   % the same paper column such that the (transparent) slurs eventually may
 735   % start and end in the same column.
 736   Slur \override #'transparent = ##t
 737
 738   % We can not remove Stem_engraver, since slurs depend on stems.  If
 739   % we try anyway, lily will crash in slur.scm:16:6: "Wrong type argument
 740   % in position 1 (expecting grob): ()".
 741   % As a workaround, we make the grob transparent.
 742   Stem \set #'transparent = ##t
 743
 744   % Since we do not remove stems, but only make it transparent, we have
 745   % to set the length to 0.0.  Otherwise, articulation marks (such as
 746   % ictus, circulus or accentus) may be vertically placed quite away from
 747   % the note head.
 748   Stem \set #'length = #'0.0
 749
 750   % Put some space before and after divisiones.
 751   % FIXME: This does not seem to show any effect.
 752   Script \set #'padding = #0.5
 753
 754   % There are no beams in Gregorian Chant notation.
 755   autobeaming = ##f
 756
 757   % Prepare TextSpanner for \episem{Initium|Finis} use.
 758   TextSpanner \set #'style = #'line
 759   TextSpanner \set #'edge-height = #'(0 . 0)
 760   TextSpanner \set #'padding = #0.5
 761   TextSpanner \set #'enclose-bounds = ##t
 762   TextSpanner \set #'edge-text = #'("" . "")
 763 }
 764
 765 GregorianTranscriptionStaffContext = \translator {
 766   \StaffContext
 767   \name "GregorianTranscriptionStaff"
 768   \alias "Staff"
 769   \denies "Voice"
 770   \accepts "GregorianTranscriptionVoice"
 771
 772   % We can not remove Bar_engraver; otherwise clefs and custodes will
 773   % not show up any more among other line breaking issues.
 774   % Instead, we make the grob transparent.
 775   BarLine \set #'transparent = ##t
 776 }