2 (define (engraver-description name description created-elts properties)
3 (list name description created-elts properties)
6 (define (translator-property-description symbol type? description)
7 (list symbol type? description)
10 (define engraver-description-alist
16 "Create stems and single-stem tremolos"
19 (translator-property-description 'tremoloFlags integer? "")
20 (translator-property-description 'stemLeftBeamCount integer? "")
21 (translator-property-description 'stemRightBeamCount integer? "")
28 "Create lyric hyphens"
37 "Create lyric extenders"
44 'Separating_line_group_engraver
46 "Separating_line_group_engraver"
47 "Objects that generate rods and springs for the spacing problem."
48 '(SeparationItem SeparatingGroupSpanner)
56 "Group all objects created in this context in a VerticalAxisGroup spanner."
59 (translator-property-description 'CONTEXTNAMEVerticalExtent number-pair? "hard coded vertical extent [fixme, naming]")
60 (translator-property-description 'CONTEXTNAMEMinimumVerticalExtent number-pair? "minimum vertical extent [fixme, naming]")
61 (translator-property-description 'CONTEXTNAExtraVerticalExtent number-pair? "extra vertical extent [fixme, naming]")
68 "Like Axis_group_engraver, but make a hara kiri spanner, and add
69 interesting items (ie. note heads, lyric syllables and normal rests)"
70 '(HaraKiriVerticalGroup)
79 "Make accidentals. Catches note heads, ties and notices key-change
80 events. Due to interaction with ties (which don't come together
81 with note heads), this needs to be in a context higher than Tie_engraver.
85 (translator-property-description 'localKeySignature list? "the key signature at this point in the measure")
86 (translator-property-description 'forgetAccidentals boolean? "do
87 not set localKeySignature when a note alterated differently from
88 localKeySignature is found.
90 Causes accidentals to be printed at every note instead of
91 remembered for the duration of a measure.
93 (translator-property-description 'noResetKey boolean? "Do not
94 reset local key to the value of keySignature at the start of a measure,
95 as determined by measurePosition.<p>
96 Do not reset the key at the start of a measure. Accidentals will
97 be printed only once and are in effect until overridden, possibly
106 (engraver-description
108 "Make volta brackets"
111 (translator-property-description 'repeatCommands list?
112 "This property is read to find any command of the form (volta . X), where X is a string or #f")
113 (translator-property-description 'voltaSpannerDuration moment?
114 "maximum duration of the volta bracket.<p>
116 Set to a duration to control the size of the brackets printed by
117 @code{\alternative}. It specifies the number of whole notes duration
118 to use for the brackets. This can be used to shrink the length of
119 brackets in the situation where one alternative is very large. It may
120 have odd effects if the specified duration is longer than the music
121 given in an @code{\alternative}.
128 (engraver-description
130 "Determine and set reference point for pitches"
131 '(Clef OctavateEight)
133 (translator-property-description 'supportedClefTypes
134 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.")
135 (translator-property-description 'clefPosition number? " where the center of the symbol should go")
136 (translator-property-description 'clefGlyph string? "name of the symbol within the music font")
137 (translator-property-description 'centralCPosition number? "place of the central C. ")
138 (translator-property-description 'defaultClef string? "generate this clef at the very start of this staff. If not set, don't generate a clef")
139 (translator-property-description 'explicitClefVisibility procedure? "visibility-lambda function for clefs entered as \clef.")
140 (translator-property-description 'clefPitches list? "alist mapping GLYPHNAME to the position of the central C for that symbol")