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         minimumVerticalExtent = #'(0 . 2.5)
 359         extraVerticalExtent = ##f
 360         verticalExtent = ##f
 361 }
 362
 363
 364 RemoveEmptyStaffContext = \translator {
 365         \StaffContext
 366         \remove "Axis_group_engraver"
 367         \consistsend "Hara_kiri_engraver"
 368         \accepts "Voice"
 369
 370         % hara kiri & auto knee don't work together.
 371         Beam \override #'auto-knee-gap = #'()
 372 }
 373
 374 RemoveEmptyStaffContext = \translator {
 375         \RemoveEmptyStaffContext
 376         \accepts "VaticanaVoice"
 377         \accepts "GregorianTranscriptionVoice"
 378 }
 379
 380 ScoreContext = \translator {
 381         \type Score_engraver
 382         \name Score
 383         localKeySignature = #'()
 384
 385         \description "This is the top level notation context.  No
 386     other context can contain a @code{Score} context.  This context
 387     handles the administration of time signatures.  It also makes sure
 388     that items such as clefs, time signatures, and key-signatures are
 389     aligned across staves.
 390
 391     You cannot explicitly instantiate a Score context (since it is
 392     not contained in any other context).  It is instantiated
 393     automatically when an output definition (a @code{\score} or
 394     @code{\paper} block) is processed."
 395
 396         \consists "Repeat_acknowledge_engraver"
 397         \consists "Staff_collecting_engraver"
 398
 399         % move the alias along with the engraver.
 400
 401         %% TODO? add this alias from Timing_engraver::initialize() ?
 402         \consists "Timing_engraver"
 403         \alias "Timing"
 404
 405         \consists "Output_property_engraver"
 406         \consists "System_start_delimiter_engraver"
 407         \consists "Mark_engraver"
 408         \consists "Metronome_mark_engraver"
 409         \consists "Break_align_engraver"
 410         \consists "Spacing_engraver"
 411         \consists "Vertical_align_engraver"
 412         \consists "Lyric_phrasing_engraver"
 413         \consists "Bar_number_engraver"
 414         \consists "Span_arpeggio_engraver"
 415
 416         \accepts "Staff"
 417         \accepts "TabStaff"
 418         \accepts "VaticanaStaff"
 419         \accepts "GregorianTranscriptionStaff"
 420         \accepts "StaffContainer"
 421         \accepts "StaffGroup"
 422         \accepts "RhythmicStaff"
 423         \accepts "Lyrics"
 424         \accepts "ChordNames"
 425         \accepts "GrandStaff"
 426         \accepts "ChoirStaff"
 427         \accepts "PianoStaff"
 428         \accepts "NoteNames"
 429         \accepts "FiguredBass"
 430
 431         soloText = #"Solo"
 432         soloIIText = #"Solo II"
 433         aDueText = #"a2"
 434         soloADue = ##t
 435         splitInterval = #'(0 . 1)
 436         changeMoment = #`(,(ly:make-moment 0 0) . ,(ly:make-moment 1 512))
 437         systemStartDelimiter =#'SystemStartBar
 438
 439
 440         clefGlyph = #"clefs-G"
 441         clefPosition = #-2
 442         centralCPosition = #-6
 443
 444         automaticPhrasing = ##t
 445         automaticMelismata = ##t
 446
 447         defaultBarType = #"|"
 448         barNumberVisibility = #default-bar-number-visibility
 449         automaticBars = ##t
 450
 451         explicitClefVisibility = #all-visible
 452         explicitKeySignatureVisibility = #all-visible
 453         autoBeamSettings = #default-auto-beam-settings
 454         autoBeaming = ##t
 455         scriptDefinitions = #default-script-alist
 456
 457         verticalAlignmentChildCallback = #Align_interface::alignment_callback
 458
 459         pedalSustainStrings = #'("Ped." "*Ped." "*")
 460         pedalSustainStyle = #'text
 461         pedalUnaCordaStrings = #'("una corda" "" "tre corde")
 462         pedalUnaCordaStyle = #'text
 463
 464         %% These are in ordinary italic font, including the *,
 465         %% but they are unlikely to be used,
 466         %% as the default pedal-style for SostenutoPedal is 'mixed':
 467         %% i.e.  Sost. Ped_____________________
 468         pedalSostenutoStrings = #'("Sost. Ped." "*Sost. Ped." "*")
 469         pedalSostenutoStyle = #'mixed
 470
 471
 472         tupletNumberFormatFunction = #denominator-tuplet-formatter
 473
 474         subdivideBeams = ##f
 475         allowBeamBreak = ##f
 476         extraNatural = ##t
 477         autoAccidentals = #'(Staff (same-octave . 0))
 478         autoCautionaries = #'()
 479
 480        keyAccidentalOrder = #'(
 481          (6 . -1) (2  . -1) (5 . -1 ) (1  . -1) (4  . -1) (0  . -1) (3  . -1)
 482          (3  . 1) (0 . 1) (4 . 1) (1 . 1) (5 . 1) (2 . 1) (6 . 1)
 483          (6 . -2) (2  . -2) (5 . -2 ) (1  . -2) (4  . -2) (0  . -2) (3 . -2)
 484          (3  . 2) (0 . 2) (4 . 2) (2 . 2) (5 . 2) (2 . 2) (6 . 2)
 485         )
 486         breakAlignOrder = #'(
 487           instrument-name
 488           left-edge
 489           ambitus
 490           breathing-sign
 491           clef
 492           staff-bar
 493           key-signature
 494           time-signature
 495           custos
 496         )
 497         barCheckSynchronize = ##t
 498
 499         %% chord names:
 500         chordNameFunction = #ignatzek-chord-names
 501         majorSevenSymbol = #whiteTriangleMarkup
 502         chordNameSeparator = #(make-simple-markup  "/")
 503         chordNameExceptions = #ignatzekExceptions
 504         chordNoteNamer = #'()
 505         chordRootNamer = #note-name->markup
 506
 507         chordNameExceptionsFull = #fullJazzExceptions
 508         chordNameExceptionsPartial = #partialJazzExceptions
 509
 510         %% tablature:
 511         stringOneTopmost = ##t
 512         highStringOne = ##t
 513
 514         %% One may change the strings tuning as following :
 515         %% The lenght of the list must be equal to the number of string
 516         stringTunings   = #guitar-tunings
 517         tablatureFormat = #fret-number-tablature-format
 518
 519         %%
 520         bassFigureFormatFunction = #make-bass-figure-markup
 521         metronomeMarkFormatter = #make-metronome-markup
 522
 523         \grobdescriptions #all-grob-descriptions
 524 }
 525
 526 OrchestralScoreContext= \translator {
 527         \ScoreContext
 528 }
 529
 530 EasyNotation =  \translator {
 531         \ScoreContext
 532         NoteHead \override #'molecule-callback = #Note_head::brew_ez_molecule
 533 }
 534
 535
 536
 537 FiguredBassContext = \translator {
 538         \type "Engraver_group_engraver"
 539         \name FiguredBass
 540         \consists "Figured_bass_engraver"
 541         \consists "Rest_swallow_translator"
 542         \consists "Note_swallow_translator"
 543         \consists "Separating_line_group_engraver"
 544
 545         \consistsend "Hara_kiri_engraver"
 546 }
 547
 548 TabVoiceContext =   \translator {
 549       \VoiceContext
 550       \name "TabVoice"
 551       \denies "Thread"
 552       \consists "Tab_note_heads_engraver"
 553       \remove "Fingering_engraver"
 554       \remove "New_fingering_engraver"
 555
 556       Slur \override #'font-family       = #'roman
 557       Slur \override #'molecule-callback = #hammer-molecule-callback
 558       Slur \override #'direction    = #-1
 559
 560       % Draws all stems/beams out of the staff (and not in the middle of the staff !)
 561       % This feature is now disabled because most of the tab does not use it.
 562       %Beam \override #'damping = #100000
 563       %Stem \override #'up-to-staff = ##t
 564
 565       % No accidental in tablature !
 566       \remove Accidental_engraver
 567 }
 568
 569 TabStaffContext = \translator {
 570       \StaffContext
 571       \alias "Staff"
 572       \name "TabStaff"
 573       \denies "Voice"
 574
 575       \description "Context for generating tablature. [DOCME]"
 576
 577       \accepts "TabVoice"
 578
 579       % 6 strings
 580       StaffSymbol \override #'line-count  = #6
 581       StaffSymbol \override #'staff-space = #1.5
 582
 583      % Don't draw stems over the tablature figures !
 584       Stem \override #'avoid-note-head = ##t
 585
 586       % No accidental in tablature !
 587       \remove Accidental_engraver
 588       \remove Key_engraver
 589
 590       % Special "TAB" clef
 591       clefGlyph = #"clefs-tab"
 592       clefPosition = #0
 593 }
 594
 595 % TODO: Gregorian Chant contexts should be moved to gregorian-init.ly,
 596 % but this does not work (is this a bug or intended behaviour?):
 597 %
 598 % If I try to do so, I get "error: unknown escaped string:
 599 % `\VaticanaStaffContext'" in params-init.ly.  If I also move
 600 % "\translator { \Vaticana*Context }" from params-init.ly to the end
 601 % of gregorian-init.ly, then I get "error: parse error, unexpected
 602 % TRANSLATOR: \translator { \VaticanaStaffContext }" in
 603 % gregorian-init.ly. --jr
 604
 605 VaticanaVoiceContext = \translator {
 606   \VoiceContext
 607   \name "VaticanaVoice"
 608   \alias "Voice"
 609   \description "Same as @code{Voice} context, except that it is accommodated for tyepsetting Gregorian Chant in the notational style of Editio Vaticana."
 610
 611   % We can not remove Slur_engraver, since \addlyrics depends on it.
 612   % Instead, we make the grob transparent.
 613   % Unfortunately, this gives us a lot of warnings ("Degenerate bow:
 614   % infinite steepness reqd"), since in ligatures, all note heads are in
 615   % the same paper column such that the (transparent) slurs eventually may
 616   % start and end in the same column.
 617   Slur \override #'transparent = ##t
 618
 619   % We can not remove Stem_engraver, since slurs depend on stems.  If
 620   % we try anyway, lily will crash in slur.scm:16:6: "Wrong type argument
 621   % in position 1 (expecting grob): ()".
 622   % As a workaround, we make the grob transparent.
 623   Stem \set #'transparent = ##t
 624
 625   % Since we do not remove stems, but only make it transparent, we have
 626   % to set the length to 0.0.  Otherwise, articulation marks (such as
 627   % ictus, circulus or accentus) may be vertically placed quite away from
 628   % the note head.
 629   Stem \set #'length = #'0.0
 630
 631   \remove "Ligature_bracket_engraver"
 632   \consists "Vaticana_ligature_engraver"
 633
 634   % Set default head for notes outside of \[ \].
 635   NoteHead \set #'style = #'vaticana_punctum
 636
 637   % Put some space before and after divisiones.
 638   % FIXME: This does not seem to show any effect.
 639   Script \set #'padding = #0.5
 640
 641   % There are no beams in Gregorian Chant notation.
 642   autobeaming = ##f
 643
 644   % Prepare TextSpanner for \episem{Initium|Finis} use.
 645   TextSpanner \set #'style = #'line
 646   TextSpanner \set #'edge-height = #'(0 . 0)
 647   TextSpanner \set #'padding = #0.5
 648   TextSpanner \set #'enclose-bounds = ##t
 649   TextSpanner \set #'edge-text = #'("" . "")
 650 }
 651
 652 VaticanaStaffContext = \translator {
 653   \StaffContext
 654   \name "VaticanaStaff"
 655   \alias "Staff"
 656   \denies "Voice"
 657   \accepts "VaticanaVoice"
 658   \description "Same as @code{Staff} context, except that it is accommodated for tyepsetting Gregorian Chant in the notational style of Editio Vaticana."
 659
 660   \remove "Time_signature_engraver"
 661   \consists "Custos_engraver"
 662
 663   % We can not remove Bar_engraver; otherwise clefs and custodes will
 664   % not show up any more among other line breaking issues.
 665   % Instead, we make the grob transparent.
 666   BarLine \set #'transparent = ##t
 667
 668   StaffSymbol \set #'line-count = #4
 669
 670   % FIXME: unit on StaffSymbol's width should be \linewidth.
 671   % StaffSymbol \set #'width = #60.0
 672
 673   % Choose vaticana do clef on 3rd line as default.
 674   clefGlyph = #"clefs-vaticana_do"
 675   centralCPosition = #1
 676   clefPosition = #1
 677   clefOctavation = #0
 678
 679   % Select vaticana style font.
 680   KeySignature \set #'style = #'vaticana
 681   Accidental \set #'style = #'vaticana
 682   Custos \set #'style = #'vaticana
 683   Custos \set #'neutral-position = #3
 684   Custos \set #'neutral-direction = #-1
 685   Custos \set #'adjust-if-on-staffline = ##t
 686
 687   % Score.timing = ##f
 688   % Score.barAlways = ##t
 689 }
 690
 691 GregorianTranscriptionVoiceContext = \translator {
 692   \VoiceContext
 693   \name "GregorianTranscriptionVoice"
 694   \alias "Voice"
 695
 696   % Removing ligature bracket engraver without replacing it by some
 697   % other ligature engraver would cause a "Junking event: `LigatureEvent'"
 698   % warning for every "\[" and "\]".  Therefore, we make the grob
 699   % transparent instead.
 700   LigatureBracket \set #'transparent = ##t
 701
 702   % We can not remove Slur_engraver, since \addlyrics depends on it.
 703   % Instead, we make the grob transparent.
 704   % Unfortunately, this gives us a lot of warnings ("Degenerate bow:
 705   % infinite steepness reqd"), since in ligatures, all note heads are in
 706   % the same paper column such that the (transparent) slurs eventually may
 707   % start and end in the same column.
 708   Slur \override #'transparent = ##t
 709
 710   % We can not remove Stem_engraver, since slurs depend on stems.  If
 711   % we try anyway, lily will crash in slur.scm:16:6: "Wrong type argument
 712   % in position 1 (expecting grob): ()".
 713   % As a workaround, we make the grob transparent.
 714   Stem \set #'transparent = ##t
 715
 716   % Since we do not remove stems, but only make it transparent, we have
 717   % to set the length to 0.0.  Otherwise, articulation marks (such as
 718   % ictus, circulus or accentus) may be vertically placed quite away from
 719   % the note head.
 720   Stem \set #'length = #'0.0
 721
 722   % Put some space before and after divisiones.
 723   % FIXME: This does not seem to show any effect.
 724   Script \set #'padding = #0.5
 725
 726   % There are no beams in Gregorian Chant notation.
 727   autobeaming = ##f
 728
 729   % Prepare TextSpanner for \episem{Initium|Finis} use.
 730   TextSpanner \set #'style = #'line
 731   TextSpanner \set #'edge-height = #'(0 . 0)
 732   TextSpanner \set #'padding = #0.5
 733   TextSpanner \set #'enclose-bounds = ##t
 734   TextSpanner \set #'edge-text = #'("" . "")
 735 }
 736
 737 GregorianTranscriptionStaffContext = \translator {
 738   \StaffContext
 739   \name "GregorianTranscriptionStaff"
 740   \alias "Staff"
 741   \denies "Voice"
 742   \accepts "GregorianTranscriptionVoice"
 743
 744   % We can not remove Bar_engraver; otherwise clefs and custodes will
 745   % not show up any more among other line breaking issues.
 746   % Instead, we make the grob transparent.
 747   BarLine \set #'transparent = ##t
 748 }