-
+(define (number-or-string? x) (or (number? x) (string? x)))
(define (engraver-description name description created-elts properties)
(list name description created-elts properties)
)
(define engraver-description-alist
(list
(cons
- 'Stem_engraver
- (engraver-description
- "Stem_engraver"
- "Create stems and single-stem tremolos"
- '(Stem StemTremolo)
- (list
- (translator-property-description 'tremoloFlags integer? "")
- (translator-property-description 'stemLeftBeamCount integer? "")
- (translator-property-description 'stemRightBeamCount integer? "")
- )))
+ 'Stem_engraver
+ (engraver-description
+ "Stem_engraver"
+ "Create stems and single-stem tremolos"
+ '(Stem StemTremolo)
+ (list
+ (translator-property-description 'tremoloFlags integer? "")
+ (translator-property-description 'stemLeftBeamCount integer? "
+Specify the number of beams to draw on the left side of the next note.
+Overrides automatic beaming. The value is only used once, and then it
+is erased.
+")
+ (translator-property-description 'stemRightBeamCount integer? "idem, for the right side")
+ )))
+
+ (cons
+ 'Hyphen_engraver
+ (engraver-description
+ "Hyphen_engraver"
+ "Create lyric hyphens"
+ '(LyricHyphen)
+ (list
+ )))
+
+ (cons
+ 'Extender_engraver
+ (engraver-description
+ "Extender_engraver"
+ "Create lyric extenders"
+ '(LyricExtender)
+ (list
+ )))
+
- (cons
- 'Hyphen_engraver
- (engraver-description
- "Hyphen_engraver"
- "Create lyric hyphens"
- '(LyricHyphen)
- (list
- )))
-
- (cons
- 'Extender_engraver
- (engraver-description
- "Extender_engraver"
- "Create lyric extenders"
- '(LyricExtender)
- (list
- )))
-
-
- (cons
- 'Separating_line_group_engraver
- (engraver-description
- "Separating_line_group_engraver"
- "Objects that generate rods and springs for the spacing problem."
- '(SeparationItem SeparatingGroupSpanner)
- (list
- )))
-
- (cons
- 'Axis_group_engraver
- (engraver-description
- "Axis_group_engraver"
- "Group all objects created in this context in a VerticalAxisGroup spanner."
- '(VerticalAxisGroup)
- (list
- (translator-property-description 'CONTEXTNAMEVerticalExtent number-pair? "hard coded vertical extent [fixme, naming]")
- (translator-property-description 'CONTEXTNAMEMinimumVerticalExtent number-pair? "minimum vertical extent [fixme, naming]")
- (translator-property-description 'CONTEXTNAExtraVerticalExtent number-pair? "extra vertical extent [fixme, naming]")
- )))
-
- (cons
- 'Hara_kiri_engraver
- (engraver-description
- "Hara_kiri_engraver"
- "Like Axis_group_engraver, but make a hara kiri spanner, and add
+ (cons
+ 'Separating_line_group_engraver
+ (engraver-description
+ "Separating_line_group_engraver"
+ "Generates objects for computing spacing parameters."
+ '(SeparationItem SeparatingGroupSpanner)
+ (list
+ )))
+
+ (cons
+ 'Axis_group_engraver
+ (engraver-description
+ "Axis_group_engraver"
+ "Group all objects created in this context in a VerticalAxisGroup spanner."
+ '(VerticalAxisGroup)
+ (list
+ (translator-property-description
+ 'CONTEXTNAMEVerticalExtent number-pair? "hard coded vertical extent.
+The format is a pair of dimensions, for example, this sets the sizes
+of a staff to 10 (5+5) staffspaces high. <p>
+
+<code>
+\property Staff.StaffVerticalExtent = #(-5.0 . 5.0)
+</code>
+
+ [fixme, naming]")
+ (translator-property-description
+ 'CONTEXTNAMEMinimumVerticalExtent number-pair?
+ "minimum vertical extent, same format as CONTEXTNAMEVerticalExtent [fixme, naming]")
+ (translator-property-description
+ 'CONTEXTNAExtraVerticalExtent number-pair?
+ "extra vertical extent, same format
+CONTEXTNAMEMinimumVerticalExtent [fixme, naming]") )))
+
+ (cons
+ 'Hara_kiri_engraver
+ (engraver-description
+ "Hara_kiri_engraver"
+ "Like Axis_group_engraver, but make a hara kiri spanner, and add
interesting items (ie. note heads, lyric syllables and normal rests)"
- '(HaraKiriVerticalGroup)
- '()
- ))
-
-
- (cons
- 'Local_key_engraver
- (engraver-description
- "Local_key_engraver"
- "Make accidentals. Catches note heads, ties and notices key-change
+ '(HaraKiriVerticalGroup)
+ '()
+ ))
+
+
+ (cons
+ 'Local_key_engraver
+ (engraver-description
+ "Local_key_engraver"
+ "Make accidentals. Catches note heads, ties and notices key-change
events. Due to interaction with ties (which don't come together
with note heads), this needs to be in a context higher than Tie_engraver.
(FIXME)."
- '(Accidentals)
- (list
- (translator-property-description 'localKeySignature list? "the key signature at this point in the measure")
- (translator-property-description 'forgetAccidentals boolean? "do
+ '(Accidentals)
+ (list
+ (translator-property-description 'localKeySignature list? "the key signature at this point in the measure")
+ (translator-property-description 'forgetAccidentals boolean? "do
not set localKeySignature when a note alterated differently from
localKeySignature is found.
<p>
Causes accidentals to be printed at every note instead of
remembered for the duration of a measure.
")
- (translator-property-description 'noResetKey boolean? "Do not
+ (translator-property-description 'noResetKey boolean? "Do not
reset local key to the value of keySignature at the start of a measure,
as determined by measurePosition.<p>
Do not reset the key at the start of a measure. Accidentals will
be printed only once and are in effect until overridden, possibly
many measures later.
")
-
- )))
-
-
- (cons
- 'Volta_engraver
- (engraver-description
- "Volta_engraver"
- "Make volta brackets"
- '(VoltaBracket)
- (list
- (translator-property-description 'repeatCommands list?
-"This property is read to find any command of the form (volta . X), where X is a string or #f")
- (translator-property-description 'voltaSpannerDuration moment?
-"maximum duration of the volta bracket.<p>
+
+ )))
+
+
+ (cons
+ 'Volta_engraver
+ (engraver-description
+ "Volta_engraver"
+ "Make volta brackets"
+ '(VoltaBracket)
+ (list
+ (translator-property-description 'repeatCommands list?
+ "This property is read to find any command of the form (volta . X), where X is a string or #f")
+ (translator-property-description 'voltaSpannerDuration moment?
+
"maximum duration of the volta bracket.<p>
Set to a duration to control the size of the brackets printed by
@code{\alternative}. It specifies the number of whole notes duration
have odd effects if the specified duration is longer than the music
given in an @code{\alternative}.
")
+ )
+ ))
+
+ (cons
+ 'Clef_engraver
+ (engraver-description
+ "Clef_engraver"
+ "Determine and set reference point for pitches"
+ '(Clef OctavateEight)
+ (list
+ (translator-property-description 'supportedClefTypes
+ list? "Clef settings supported. The value is an association list contain entries (NAME . (GLYPH . POSITION)), where NAME is the clef name (alto, baritone, etc.), GLYPH the glyph name, POSITION an integer where the center symbol should go.")
+ (translator-property-description 'clefPosition number? " where the center of the symbol should go")
+ (translator-property-description 'clefGlyph string? "name of the symbol within the music font")
+ (translator-property-description 'centralCPosition number? "place of the central C. ")
+ (translator-property-description 'defaultClef string? "generate this clef at the very start of this staff. If not set, don't generate a clef")
+ (translator-property-description 'explicitClefVisibility procedure? "visibility-lambda function for clefs entered as \clef.")
+ (translator-property-description 'clefPitches list? "alist mapping GLYPHNAME to the position of the central C for that symbol")
+
+ )))
+
+ (cons
+ 'A2_engraver
+ (engraver-description
+ "A2_engraver"
+ "Part combine engraver for orchestral scores."
+ '(TextScript)
+ (list
+ (translator-property-description 'combineParts boolean? "try to combine parts?")
+ (translator-property-description 'unison boolean? "set if unisono is detected ")
+ (translator-property-description 'solo boolean? "")
+ (translator-property-description 'soloADue boolean? "")
+ (translator-property-description 'soloText string? "")
+ (translator-property-description 'soloIIText string? "")
+ (translator-property-description 'aDueText string? "")
+ (translator-property-description 'combineParts boolean? "")
+ (translator-property-description 'unisilence boolean? "")
+ (translator-property-description 'unison boolean? "")
+ (translator-property-description 'unirhythm boolean? "")
+ (translator-property-description 'solo boolean? "")
+ (translator-property-description 'split-interval number-pair? "")
+ (translator-property-description 'soloADue boolean? "")
+ )))
+
+ (cons
+ 'Align_note_column_engraver
+ (engraver-description
+ "Align_note_column_engraver"
+ "Generate object to put grace notes from left to right."
+ '(GraceAlignment)
+ (list
+
+ (translator-property-description 'graceAlignPosition dir? "put the grace note before or after the main note?")
+ (translator-property-description 'graceAccidentalSpace number? "amount space to alot for an accidental")
+ )))
+
+ (cons
+ 'Arpeggio_engraver
+ (engraver-description
+ "Arpeggio_engraver"
+ "Generate an Arpeggio from a Arpeggio_req"
+ '(Arpeggio)
+ (list
+ )))
+
+ (cons
+ 'Auto_beam_engraver
+ (engraver-description
+ "Auto_beam_engraver"
+ "Generate beams based on measure characteristics and observed Stems.
+Uses beatLength, measureLength and measurePosition to decide when to start and stop a beam.
+"
+ '(
+ Beam)
+ (list
+ (translator-property-description 'noAutoBeaming boolean? " If set to true then beams are not generated automatically.
+")
+ (translator-property-description 'beamAutoEnd moment? "
+ Specifies when automatically generated beams can end. See
+ section XREF-autobeam [FIXME].")
+ (translator-property-description 'beamAutoBegin moment? "
+ Specifies when automatically generated beams can start. See
+ section XREF-autobeam [FIXME].")
+
+ )))
+
+ (cons
+ 'Bar_engraver
+ (engraver-description
+ "Bar_engraver"
+ "Create barlines."
+ '(BarLine)
+ (list
+ (translator-property-description 'whichBar string? "This property is read to determine what type of barline to create.
+Example:
+<xmp>
+\\property Staff.whichBar = \"|:\"
+</xmp>
+will create a start-repeat bar in this staff only
+")
+ (translator-property-description 'staffsFound list? "list of all staff-symbols found.")
+ )))
+
+
+ (cons
+ 'Bar_number_engraver
+ (engraver-description
+ "Bar_number_engraver"
+ "A bar number is created whenever measurePosition is zero. It is
+put on top of all staffs, and appears only at left side of the staff."
+ '(BarNumber)
+ (list
+ (translator-property-description 'currentBarNumber integer? "this is read to determine
+ the number to put on the bar ")
+ )))
+
+
+ (cons
+ 'Beam_engraver
+ (engraver-description
+ "Beam_engraver"
+ "Handles Beam_requests by engraving Beams. If omitted, then notes will be
+ printed with flags instead of beams."
+ '(Beam)
+ (list
+ (translator-property-description 'beamMelismaBusy boolean? "Signal if a beam is set when automaticMelismata is set")
+ )))
+
+ (cons
+ 'Break_align_engraver
+ (engraver-description
+ "Break_align_engraver"
+ "Align graphic elements with corresponding break-align-symbols into groups, and order the groups according to breakAlignOrder"
+ '(BreakAlignment BreakAlignGroup LeftEdge)
+ (list
+ (translator-property-description 'breakAlignOrder list?
+ "Defines the order in which
+prefatory matter (clefs, key signatures) appears, eg. this puts the
+key signatures after the bar lines:
+
+<xmp>
+ \\property Score.breakAlignOrder = #'(
+ Span_bar
+ Breathing_sign
+ Clef_item
+ Staff_bar
+ Key_item
+ Time_signature
+ )
+</xmp>
+")
+ )))
+
+
+ (cons
+ 'Breathing_sign_engraver
+ (engraver-description
+ "Breathing_sign_engraver"
+ ""
+ '(BreathingSign)
+ (list
+ )))
+
+
+ (cons
+ 'Chord_name_engraver
+ (engraver-description
+ "Chord_name_engraver"
+ "Catch Note_req's, Tonic_reqs, Inversion_reqs, Bass_req
+and generate the appropriate chordname."
+ '(ChordNames)
+ (list
+ (translator-property-description 'chordInversion boolean? " Determines whether LilyPond should look for chord inversions when
+ translating from notes to chord names. Set to 1 to find
+ inversions. The default is 0 which does not look for
+ inversions.")
+ (translator-property-description 'drarnChords boolean? "")
+ )))
+
+
+ (cons
+ 'Chord_tremolo_engraver
+ (engraver-description
+ "Chord_tremolo_engraver"
+ "Generates beams for the \repeat X tremolo ... construct"
+ '(Beam)
+ (list
+ )))
+
+
+
+ (cons
+ 'Collision_engraver
+ (engraver-description
+ "Collision_engraver"
+ ""
+ '(NoteCollision
+ )
+ (list
+ )))
+
+ (cons
+ 'Custos_engraver
+ (engraver-description
+ "Custos_engraver"
+ ""
+ '(Custos)
+ (list
+ )))
+
+
+ (cons
+ 'Dot_column_engraver
+ (engraver-description
+ "Dot_column_engraver"
+ " Engraves dots on dotted notes shifted to the right of the note.
+If omitted, then dots appear on top of the notes.
+"
+ '(DotColumn
+ )
+ (list
+ )))
+
+
+ (cons
+ 'Dynamic_engraver
+ (engraver-description
+ "Dynamic_engraver"
+ ""
+ '(DynamicLineSpanner
+ DynamicText Crescendo
+ TextSpanner)
+ (list
+ )))
+
+
+
+
+ (cons
+ 'Grace_position_engraver
+ (engraver-description
+ "Grace_position_engraver"
+ "Attach a grace note alignment to a note-column "
+ '()
+ (list
+ )))
+
+ (cons
+ 'Grace_engraver_group
+ (engraver-description
+ "Grace_engraver_group"
+ "An engraver that creates a `shielded' context-tree with separate notion of time"
+ '()
+ (list
+ )))
+
+
+ (cons
+ 'Instrument_name_engraver
+ (engraver-description
+ "Instrument_name_engraver"
+ " Prints the name of the instrument (specified by
+ @code{Staff.instrument} and @code{Staff.instr}) at the left of the
+ staff."
+ '(InstrumentName)
+ (list
+ (translator-property-description 'instrument string? " If @code{Instrument_name_engraver}
+@cindex Instrument_name_engraver
+ is
+ added to the Staff translator, then the @code{instrument} property
+ is used to label the first line of the staff and the @code{instr}
+ property is used to label subsequent lines. If the
+ @code{midiInstrument} property is not set, then @code{instrument}
+ is used to determine the instrument for MIDI output.")
+ (translator-property-description 'instr string? "see <code>instrument</code>")
+ )))
+
+ (cons
+ 'Engraver_group_engraver
+ (engraver-description
+ "Engraver_group_engraver"
+ "A group of engravers taken together"
+ '()
+ (list
+ )))
+
+ (cons
+ 'Key_engraver
+ (engraver-description
+ "Key_engraver"
+ ""
+ '(KeySignature
+ )
+ (list
+
+ (translator-property-description 'keySignature list? "")
+ (translator-property-description 'keyOctaviation boolean? "")
+ (translator-property-description 'explicitKeySignatureVisibility procedure? "")
+ (translator-property-description 'createKeyOnClefChange boolean? "")
+ (translator-property-description 'keyAccidentalOrder list? "")
+ (translator-property-description 'keySignature list? "")
+ )))
+
+ (cons 'Lyric_phrasing_engraver
+ (engraver-description
+ "Lyric_phrasing_engraver"
+ ""
+ '()
+ (list
+ (translator-property-description 'automaticPhrasing boolean? "")
+ (translator-property-description 'weAreGraceContext boolean? "")
+ (translator-property-description 'melismaEngraverBusy boolean? "")
+ (translator-property-description 'associatedVoice string? "")
+ (translator-property-description 'phrasingPunctuation string? "")
+ )))
+
+ (cons
+ 'Mark_engraver
+ (engraver-description
+ "Mark_engraver"
+ ""
+ '(RehearsalMark)
+ (list
+
+ (translator-property-description 'rehearsalMark number-or-string? "")
+ (translator-property-description 'staffsFound list? "")
+ )))
+
+
+ (cons
+ 'Melisma_engraver
+ (engraver-description
+ "Melisma_engraver"
+ ""
+ '()
+ (list
+
+ (translator-property-description 'melismaBusy boolean? "")
+ (translator-property-description 'slurMelismaBusy boolean? "")
+ (translator-property-description 'tieMelismaBusy boolean? "")
+ (translator-property-description 'beamMelismaBusy boolean? "")
+ )))
+
+
+ (cons
+ 'Multi_measure_rest_engraver
+ (engraver-description
+ "Multi_measure_rest_engraver"
+ "Engraves multi-measure rests that are produced with @code{R}. Reads
+measurePosition and currentBarNumber to determine what number to print over the MultiMeasureRest
+ "
+ '(MultiMeasureRest)
+ (list
+ )))
+
+
+ (cons
+ 'Note_heads_engraver
+ (engraver-description
+ "Note_heads_engraver"
+ "Generate one or more noteheads from Music of type Note_req."
+ '(NoteHead Dots)
+ (list
+ )))
+
+
+ (cons
+ 'Note_name_engraver
+ (engraver-description
+ "Note_name_engraver"
+ ""
+ '(NoteName)
+ (list
+ )))
+
+
+ (cons
+ 'Output_property_engraver
+ (engraver-description
+ "Output_property_engraver"
+ "Interpret Music of Output_property type, and apply a function
+to any Graphic objects that satisfies the predicate."
+ '()
+ (list
+ )))
+
+
+ (cons
+ 'Piano_pedal_engraver
+ (engraver-description
+ "Piano_pedal_engraver"
+ "engrave Piano pedals symbols."
+ '(SostenutoPedal SustainPedal UnaChordaPedal)
+ (list
+
+ (translator-property-description 'startSustain string? "")
+ (translator-property-description 'stopSustain string? "")
+ (translator-property-description 'stopStartSustain string? "")
+ (translator-property-description 'startUnaChorda string? "")
+ (translator-property-description 'stopUnaChorda string? "")
+ )))
+
+ (cons
+ 'Pitch_squash_engraver
+ (engraver-description
+ "Pitch_squash_engraver"
+ "Treat all pitches as middle C. Note that the notes move, but
+the locations of accidentals stay the same.
+Set the position field of all note heads to zero. This useful for
+making a single line staff that demonstrates the rhythm of a melody."
+ '()
+ (list
+ (translator-property-description 'squashedPosition integer? " Vertical position of
+squashing.")
+ )))
+
+ (cons
+ 'Property_engraver
+ (engraver-description
+ "Property_engraver"
+"This is a engraver that converts \property settings into
+back-end element-property settings. Example: Voice.stemLength will set
+#'length in all Stem objects<p>
+Due to CPU and memory requirements, the use of this engraver is deprecated."
+ '()
+ (list
+ (translator-property-description 'Generic_property_list list? "description of the conversion.
+<p>
+ Defines names and types for generic properties. These are properties
+ than can be plugged into the backend directly. See the init file
+ @file{generic-property.scm} for details. For internal use only, deprecated.
+")
+ )))
+
+
+ (cons
+ 'Repeat_acknowledge_engraver
+ (engraver-description
+ "Repeat_acknowledge_engraver"
+
+ "Acknowledge repeated music, and convert the contents of
+repeatCommands ainto an appropriate setting for whichBar"
+ '()
+ (list
+ (translator-property-description 'repeatCommands list? "")
+ (translator-property-description 'whichBar string? "")
+
+ )))
+
+
+ (cons
+ 'Rest_collision_engraver
+ (engraver-description
+ "Rest_collision_engraver"
+ "Handles collisions of rests."
+ '(RestCollision)
+ (list
+ )))
+
+
+ (cons
+ 'Rest_engraver
+ (engraver-description
+ "Rest_engraver"
+ ""
+ '(Rest Dots)
+ (list
+ )))
+
+
+ (cons
+ 'Rhythmic_column_engraver
+ (engraver-description
+ "Rhythmic_column_engraver"
+ "Generates NoteColumn, an objects that groups stems, noteheads and rests."
+ '(NoteColumn)
+ (list
+ )))
+
+
+ (cons
+ 'Script_column_engraver
+ (engraver-description
+ "Script_column_engraver"
+ ""
+ '(ScriptColumn)
+ (list
+ )))
+
+
+ (cons
+ 'Script_engraver
+ (engraver-description
+ "Script_engraver"
+ " Handles note ornaments generated by @code{\script}.
+"
+ '(Script)
+ (list
+ (translator-property-description 'scriptDefinitions list? "
+Description of scripts to use. (fixme)
+")
+
+ (translator-property-description 'scriptHorizontal boolean? " Put scripts left or right of note heads. Support for this is
+ limited. Accidentals will collide with scripts.
+
+")
+ )))
+
+ (cons
+ 'Score_engraver
+ (engraver-description
+ "Score_engraver"
+ "Top level engraver. Takes care of generating columns and the complete system (ie. LineOfScore)"
+ '(LineOfScore PaperColumn NonMusicalPaperColumn)
+ (list
+ (translator-property-description 'currentMusicalColumn ly-element? "")
+ (translator-property-description 'currentCommandColumn ly-element? "")
+ )))
+
+ (cons
+ 'Slur_engraver
+ (engraver-description
+ "Slur_engraver"
+ "Build slurs from Slur_reqs"
+ '(Slur)
+
+ (list
+ (translator-property-description 'slurBeginAttachment symbol? "")
+ (translator-property-description 'slurEndAttachment symbol? "")
+ (translator-property-description 'slurMelismaBusy boolean? "Signal a slur if automaticMelismata is set")
+ )))
+
+
+ (cons
+ 'Spacing_engraver
+ (engraver-description
+ "Spacing_engraver"
+ "make a SpacingSpanner and do bookkeeping of shortest starting and playing notes "
+ '(SpacingSpanner)
+ (list
+ )))
+
+
+ (cons
+ 'Span_arpeggio_engraver
+ (engraver-description
+ "Span_arpeggio_engraver"
+ ""
+ '(Arpeggio)
+ (list
+ (translator-property-description 'connectArpeggios boolean? " If
+set, connect all arpeggios that are found. In this way, you can make
+arpeggios that cross staffs.
+")
+ )))
+
+
+ (cons
+ 'Span_bar_engraver
+ (engraver-description
+ "Span_bar_engraver"
+ "This engraver makes cross-staff barlines: It catches all normal
+bar lines, and draws a single span-bar across them. <p>"
+
+ '(SpanBar)
+ (list
+ )))
+
+
+ (cons
+ 'Staff_symbol_engraver
+ (engraver-description
+ "Staff_symbol_engraver"
+ "create the constellation of five (default) staff lines."
+ '(StaffSymbol)
+ (list
+ )))
+
+
+ (cons
+ 'Stanza_number_engraver
+ (engraver-description
+ "Stanza_number_engraver"
+ ""
+ '(StanzaNumber
)
+ (list
+ (translator-property-description 'stz string? "")
+ (translator-property-description 'stanza string? "Stanza `number' to print at start of a verse")
+ )))
+
+
+
+ (cons
+ 'System_start_delimiter_engraver
+ (engraver-description
+ "System_start_delimiter_engraver"
+ "creates a SystemStartDelimiter spanner"
+ '(SystemStartDelimiter)
+ (list
+ )))
+
+
+ (cons
+ 'Text_engraver
+ (engraver-description
+ "Text_engraver"
+ "Create text-scripts"
+ '(TextScript)
+ (list
+ (translator-property-description 'scriptHorizontal boolean? " Put scripts left or right of note heads. Support for this is
+ limited. Accidentals will collide with scripts.
+
+")
+ (translator-property-description 'textNonEmpty boolean? " If set
+to true then text placed above or below the staff is not assumed to
+have zero width. @code{fatText} and @code{emptyText} are predefined
+settings.
+")
+ )))
+
+
+ (cons
+ 'Text_spanner_engraver
+ (engraver-description
+ "Text_spanner_engraver"
+ "Create text spanner from a Span_req "
+ '(TextSpanner)
+ (list
+ )))
+
+
+ (cons
+ 'Thread_devnull_engraver
+ (engraver-description
+ "Thread_devnull_engraver"
+ "Kill elements whenever we are Voice called `two' and
+either unison, unisilence or soloADue is set"
+ '()
+ '()))
+
+
+ (cons
+ 'Tie_engraver
+ (engraver-description
+ "Tie_engraver"
+ "Generate ties between noteheads of equal pitch."
+ '(Tie TieColumn)
+ (list
+
+
+ (translator-property-description 'sparseTies boolean? "only create one tie per chord.")
+ (translator-property-description 'tieMelismaBusy boolean? "Signal ties when automaticMelismata is set")
+ )))
+
+
+ (cons
+ 'Time_signature_engraver
+ (engraver-description
+ "Time_signature_engraver"
+ "Create a TimeSignature whenever <code>timeSignatureFraction</code> changes"
+ '(TimeSignature)
+ (list
+ )))
+
+
+ (cons
+ 'Timing_engraver
+ (engraver-description
+ "Timing_engraver"
+ " Responsible for synchronizing timing information from staffs.
+ Normally in @code{Score}. In order to create polyrhythmic music,
+ this engraver should be removed from @code{Score} and placed in
+ @code{Staff}."
+ '()
+ (list
+ (translator-property-description 'timeSignatureFraction number-pair? "
+pair of numbers, signifying the time signature. For example #'(4 . 4) is a 4/4 time signature.")
+
+ (translator-property-description 'barNonAuto boolean? " If set to true then bar lines will not be printed
+ automatically; they must be explicitly created with @code{\bar}
+ keywords. Unlike with the @code{\cadenza} keyword, measures are
+ still counted. Bar generation will resume according to that
+ count if this property is set to zero.
+")
+ (translator-property-description 'whichBar string? "if not set
+explicitly (by \property or \bar), this is set according to values of
+defaultBarType, barAlways, barNonAuto and measurePosition.
+ ")
+
+ (translator-property-description 'barAlways boolean? " If set to true a bar line is drawn after each note.
+")
+ (translator-property-description 'defaultBarType string? "Sets the default type of bar line. See Section XREF-barlines [FIXME]
+ for a list of available bar types.
+")
+ (translator-property-description 'skipBars boolean? " Set to true to skip the empty bars that are produced by
+ multimeasure notes and rests. These bars will not appear on the
+ printed output. If not set (the default) multimeasure
+ notes and rests expand into their full length, printing the appropriate
+ number of empty bars so that synchronization with other voices is
+ preserved.
+<code>
+@mudela[fragment,verbatim,center]
+r1 r1*3 R1*3\property Score.skipBars=1 r1*3 R1*3
+
+@end mudela
+</code>
+")
+ (translator-property-description 'timing boolean? " Keep administration of measure length, position, bar number, etc?
+Switch off for cadenzas.")
+ (translator-property-description 'oneBeat moment? " How long does one beat in the current time signature last?")
+ (translator-property-description 'measureLength moment? " How long does one measure in the current time signature last?")
+ (translator-property-description 'measurePosition moment? "
+ How much of the current measure (measured in whole notes) have we had?
+")
+ (translator-property-description 'currentBarNumber integer? "Contains the current barnumber. This property is incremented at
+every barline.
+")
+ )))
+
+
+ (cons
+ 'Tuplet_engraver
+ (engraver-description
+ "Tuplet_engraver"
+ "Catch Time_scaled_music and generate appropriate bracket "
+ '(
+ TupletBracket)
+ (list
+ (translator-property-description 'tupletSpannerDuration moment? "
+Normally a tuplet bracket is as wide as the
+@code{\times} expression that gave rise to it. By setting this
+property, you can make brackets last shorter. Example
+<xmp>
+@mudela[verbatim,fragment]
+\context Voice \times 2/3 {
+ \property Voice.tupletSpannerDuration = #(make-moment 1 4)
+ [c8 c c] [c c c]
+}
+@end mudela
+</xmp>
+")
+ (translator-property-description 'tupletInvisible boolean? "
+ If set to true, tuplet bracket creation is switched off
+entirely. This has the same effect as setting both
+@code{tupletNumberVisibility} and @code{tupletBracketVisibility} to
+@code{#f}, but as this does not even create elements, this setting
+uses less memory and time.")
+ )))
+
+
+ (cons
+ 'Vertical_align_engraver
+ (engraver-description
+ "Vertical_align_engraver"
+ "Catch Vertical axis groups and stack them."
+ '(VerticalAlignment)
+ (list
+ )))
+
+
+ (cons
+ 'Voice_devnull_engraver
+ (engraver-description
+ "Voice_devnull_engraver"
+ "Kill off certain items and spanners if we're Voice `two' and unison or unisilence is set."
+ '()
+ (list
+ )))
))
- (cons
- 'Clef_engraver
- (engraver-description
- "Clef_engraver"
- "Determine and set reference point for pitches"
- '(Clef OctavateEight)
- (list
- (translator-property-description 'supportedClefTypes
- list? "Clef settings supported. The value is an association list contain entries (NAME . (GLYPH . POSITION)), where NAME is the clef name (alto, baritone, etc.), GLYPH the glyph name, POSITION an integer where the center symbol should go.")
- (translator-property-description 'clefPosition number? " where the center of the symbol should go")
- (translator-property-description 'clefGlyph string? "name of the symbol within the music font")
- (translator-property-description 'centralCPosition number? "place of the central C. ")
- (translator-property-description 'defaultClef string? "generate this clef at the very start of this staff. If not set, don't generate a clef")
- (translator-property-description 'explicitClefVisibility procedure? "visibility-lambda function for clefs entered as \clef.")
- (translator-property-description 'clefPitches list? "alist mapping GLYPHNAME to the position of the central C for that symbol")
-
- )))
-
-
- ))
+
+
+
+(define context-description-alist
+ '(
+(Grace . "
+ The context for handling grace notes. It is instantiated
+ automatically when you use @code{\grace}. Basically, it is an
+ `embedded' miniature of the Score context. Since this context
+ needs special interaction with the rest of LilyPond, you should
+ not explicitly instantiate it.
+")
+(LyricVoice . "
+ Corresponds to a voice with lyrics. Handles the printing of a
+ single line of lyrics.
+")
+(Thread . "
+ Handles note heads, and is contained in the Voice context. You
+ have to instantiate this explicitly if you want to adjust the
+ style of individual note heads.
+")
+(Voice . "
+ 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.")
+
+(ChordNamesVoice . "
+ A voice with chord names. Handles printing of a line of chord
+ names.")
+
+(ChordNames . "
+ Typesets chord names. Can contain @code{ChordNamesVoice}
+ contexts.")
+
+(Lyrics . "
+ Typesets lyrics. It can contain @code{LyricVoice} contexts.
+")
+(Staff . "
+ Handles clefs, bar lines, keys, accidentals. It can contain
+ @code{Voice} contexts.
+")
+(RhythmicStaff . "
+ A context like @code{Staff} but for printing rhythms. Pitches are
+ ignored; the notes are printed on one line. It can contain
+ @code{Voice} contexts.
+")
+(GrandStaff . "
+ Contains @code{Staff} or @code{RhythmicStaff} contexts. It adds a
+ brace on the left side, grouping the staffs together. The bar
+ lines of the contained staffs are connected vertically. It can
+ contain @code{Staff} contexts.")
+
+(PianoStaff . "
+ Just like @code{GrandStaff} but with @code{minVerticalAlign} set
+ equal to @code{maxVerticalAlign} so that interstaff beaming and
+ slurring can be used.")
+
+(StaffGroup . "
+ Contains @code{Staff} or @code{RhythmicStaff} contexts. Adds a
+ bracket on the left side, grouping the staffs together. The bar
+ lines of the contained staffs are connected vertically. It can
+ contain @code{Staff}, @code{RhythmicStaff}, @code{GrandStaff}, or
+ @code{Lyrics} contexts.
+")
+(ChoirStaff . "
+ Identical to @code{StaffGroup} except that the contained staffs
+ are not connected vertically.
+")
+(Score . "
+ This is the top level notation context. No other context can
+ contain a @code{Score} context. This context handles the
+ administration of time signatures. It also makes sure that items
+ such as clefs, time signatures, and key-signatures are aligned
+ across staffs. It can contain @code{Lyrics}, @code{Staff},
+ @code{RhythmicStaff}, @code{GrandStaff}, @code{StaffGroup}, and
+ @code{ChoirStaff} contexts.
+
+ You cannot explicitly instantiate a Score context (since it is
+ not contained in any other context). It is instantiated
+ automatically when an output definition (a @code{\score} or
+ @code{\paper} block) is processed.
+")
+)
+)
projects / lilypond.git / blobdiff