1 ;;;; define-grobs.scm --
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
6 ;;;; Jan Nieuwenhuizen <janneke@gnu.org>
8 ;;;; distances are given in line-thickness (thicknesses) and
9 ;;;; staff-space (distances)
11 ;;;; WARNING: the meta field should be the last one.
12 ;;;; WARNING: don't use anonymous functions for initialization.
14 ;; TODO: junk the meta field in favor of something more compact?
16 ;;; todo:: reorder sensibly.
18 (define-public all-grob-descriptions
23 (cautionary-style . parentheses)
25 (stencil . ,ly:accidental-interface::print)
27 . ,ly:accidental-interface::after-line-breaking)
29 (meta . ((class . Item)
30 (interfaces . (accidental-interface
35 (stencil . ,ly:accidental-interface::print)
36 (X-offset . ,(ly:make-simple-closure
38 ,(ly:make-simple-closure (list ly:self-alignment-interface::centered-on-x-parent))
39 ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self)))))
40 (self-alignment-X . ,CENTER)
42 (cautionary-style . smaller)
43 (Y-offset . ,ly:side-position-interface::y-aligned-side)
44 (cautionary-style . parentheses)
46 (staff-padding . 0.25)
49 (meta . ((class . Item)
50 (interfaces . (side-position-interface
53 accidental-suggestion-interface
54 self-alignment-interface
60 (positioning-done . ,ly:accidental-placement::calc-positioning-done)
61 (X-extent . ,ly:axis-group-interface::width)
63 ;; this is quite small, but it is very ugly to have
64 ;; accs closer to the previous note than to the next one.
65 (right-padding . 0.15)
66 (meta . ((class . Item)
67 (interfaces . (accidental-placement-interface))))))
71 (X-extent . ,ly:axis-group-interface::width)
72 (X-extent . ,ly:axis-group-interface::height)
75 (clef . (extra-space . 0.5))
76 (key-signature . (extra-space . 0.0))
77 (staff-bar . (extra-space . 0.0))
78 (time-signature . (extra-space . 0.0))
79 (first-note . (fixed-space . 0.0))))
81 (break-align-symbol . ambitus)
82 (break-visibility . ,begin-of-line-visible)
83 (meta . ((class . Item)
84 (interfaces . (axis-group-interface
85 break-aligned-interface
86 ambitus-interface))))))
91 (stencil . ,ly:ambitus::print)
95 (X-offset . ,ly:self-alignment-interface::centered-on-x-parent)
97 (meta . ((class . Item)
98 (interfaces . (ambitus-interface
99 staff-symbol-referencer-interface
103 (font-family . music)
105 (X-offset . ,ly:side-position-interface::x-aligned-side)
107 (cautionary-style . parentheses)
109 (stencil . ,ly:accidental-interface::print)
110 (after-line-breaking . ,ly:accidental-interface::after-line-breaking)
113 (meta . ((class . Item)
114 (interfaces . (item-interface
116 break-aligned-interface
117 side-position-interface
124 (stencil . ,ly:note-head::print)
125 (glyph-name . ,note-head::calc-glyph-name)
127 (Y-offset . ,ly:staff-symbol-referencer::callback)
128 (meta . ((class . Item)
129 (interfaces . (font-interface
132 staff-symbol-referencer-interface
133 rhythmic-head-interface
134 ledgered-interface))))))
137 . ((X-extent . ,ly:arpeggio::width)
138 (stencil . ,ly:arpeggio::print)
139 (Y-offset . ,ly:staff-symbol-referencer::callback)
140 (X-offset . ,ly:side-position-interface::x-aligned-side)
144 (staff-position . 0.0)
145 (meta . ((class . Item)
146 (interfaces . (arpeggio-interface
147 staff-symbol-referencer-interface
148 side-position-interface
153 (break-align-symbol . staff-bar)
156 (break-visibility . ,all-visible)
159 (stencil . ,ly:bar-line::print)
160 (glyph-name . ,bar-line::calc-glyph-name)
161 (bar-size . ,ly:bar-line::calc-bar-size)
164 (time-signature . (extra-space . 0.75))
165 (custos . (minimum-space . 2.0))
166 (clef . (minimum-space . 1.0))
167 (key-signature . (extra-space . 1.0))
168 (key-cancellation . (extra-space . 1.0))
169 (first-note . (fixed-space . 1.3))
170 (next-note . (semi-fixed-space . 1.3))
171 (right-edge . (extra-space . 0.0))))
174 ;; Ross. page 151 lists other values, we opt for a leaner look
177 ;; kern should scale with line-thickness too.
180 (hair-thickness . 1.9)
181 (thick-thickness . 6.0)
182 (meta . ((class . Item)
183 (interfaces . (bar-line-interface
184 break-aligned-interface
189 (stencil . ,ly:text-interface::print)
191 (break-visibility . ,begin-of-line-visible)
194 (font-family . roman)
196 (Y-offset . ,ly:side-position-interface::y-aligned-side)
198 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
199 (self-alignment-X . 1)
203 (interfaces . (side-position-interface
205 self-alignment-interface
207 break-aligned-interface))))
213 (stencil . ,ly:text-interface::print)
215 (meta . ((class . Item)
216 (interfaces . (text-interface
217 rhythmic-grob-interface
218 bass-figure-interface
223 (stencil . ,ly:enclosing-bracket::print)
225 (edge-height . (0.2 . 0.2))
226 (meta . ((class . Item)
227 (interfaces . (enclosing-bracket-interface)) ))
229 (BassFigureContinuation
232 (stencil . ,ly:figured-bass-continuation::print)
234 (Y-offset . ,ly:figured-bass-continuation::center-on-figures)
235 (meta . ((class . Spanner)
236 (interfaces . (figured-bass-continuation-interface))
242 (Y-extent . ,ly:axis-group-interface::height)
244 (meta . ((class . Spanner)
245 (interfaces . (axis-group-interface
251 (threshold . (2 . 1000))
253 (positioning-done . ,ly:align-interface::calc-positioning-done)
254 (Y-extent . ,ly:axis-group-interface::height)
257 (meta . ((class . Spanner)
258 (interfaces . (align-interface
259 axis-group-interface))))))
263 ;; todo: clean this up a bit: the list is getting
266 (positions . ,(ly:make-simple-closure
267 (ly:make-simple-closure
268 (list chain-grob-member-functions
270 ly:beam::calc-least-squares-positions
271 ly:beam::slope-damping
272 ly:beam::shift-region-to-valid
276 ;; this is a hack to set stem lengths, if positions is set.
277 (quantized-positions . ,ly:beam::set-stem-lengths)
278 (concaveness . ,ly:beam::calc-concaveness)
279 (direction . ,ly:beam::calc-direction)
280 (shorten . ,ly:beam::calc-stem-shorten)
281 (beaming . ,ly:beam::calc-beaming)
282 (stencil . ,ly:beam::print)
284 ;; TODO: should be in SLT.
285 (thickness . 0.48) ; in staff-space
286 (neutral-direction . ,DOWN)
288 ;; Whe have some unreferenced problems here.
290 ;; If we shorten beamed stems less than normal stems (1 staff-space),
291 ;; or high order less than 8th beams, patterns like
292 ;; c''4 [c''8 c''] c''4 [c''16 c]
293 ;; are ugly (different stem lengths).
295 ;; But if we shorten 16th beams as much as 8th beams, a single
296 ;; forced 16th beam looks *very* short.
298 ;; We choose to shorten 8th beams the same as single stems,
299 ;; and high order beams less than 8th beams, so that all
300 ;; isolated shortened beams look nice and a bit shortened,
301 ;; sadly possibly breaking patterns with high order beams.
302 (beamed-stem-shorten . (1.0 0.5 0.25))
304 (auto-knee-gap . 5.5)
306 ;; only for debugging.
307 (font-family . roman)
308 (meta . ((class . Spanner)
309 (interfaces . (staff-symbol-referencer-interface
316 (positioning-done . ,ly:break-align-interface::calc-positioning-done)
317 (X-extent . ,ly:axis-group-interface::width)
318 (break-align-orders . ;; end of line
340 time-signature custos)
354 (meta . ((class . Item)
355 (interfaces . (break-alignment-interface
356 axis-group-interface))))))
361 (X-extent . ,ly:axis-group-interface::width)
362 (meta . ((class . Item)
363 (interfaces . (break-aligned-interface
364 axis-group-interface))))))
368 (break-align-symbol . breathing-sign)
371 (ambitus . (extra-space . 2.0))
372 (custos . (minimum-space . 1.0))
373 (key-signature . (minimum-space . 1.5))
374 (time-signature . (minimum-space . 1.5))
375 (staff-bar . (minimum-space . 1.5))
376 (clef . (minimum-space . 2.0))
377 (first-note . (fixed-space . 1.0)) ;huh?
378 (right-edge . (extra-space . 0.1))))
380 (stencil . ,ly:text-interface::print)
382 (text . ,(make-musicglyph-markup "scripts.rcomma"))
383 (Y-offset . ,ly:breathing-sign::offset-callback)
384 (break-visibility . ,begin-of-line-invisible)
385 (meta . ((class . Item)
386 (interfaces . (break-aligned-interface
387 breathing-sign-interface
394 (stencil . ,ly:clef::print)
395 (glyph-name . ,ly:clef::calc-glyph-name)
398 (font-family . music)
399 (break-align-symbol . clef)
400 (break-visibility . ,begin-of-line-visible)
401 (space-alist . ((ambitus . (extra-space . 2.0))
402 (staff-bar . (extra-space . 0.7))
403 (key-cancellation . (minimum-space . 3.5))
404 (key-signature . (minimum-space . 3.5))
405 (time-signature . (minimum-space . 4.2))
406 (first-note . (minimum-fixed-space . 5.0))
407 (next-note . (extra-space . 0.5))
408 (right-edge . (extra-space . 0.5))))
409 (Y-offset . ,ly:staff-symbol-referencer::callback)
410 (meta . ((class . Item)
411 (interfaces . (clef-interface
412 staff-symbol-referencer-interface
414 break-aligned-interface))))))
416 (ClusterSpannerBeacon
419 (Y-extent . ,ly:cluster-beacon::height)
421 (meta . ((class . Item)
422 (interfaces . (cluster-beacon-interface))))))
427 (springs-and-rods . ,ly:spanner::set-spacing-rods)
428 (stencil . ,ly:cluster::print)
431 (minimum-length . 0.0)
434 (meta . ((class . Spanner)
435 (interfaces . (cluster-interface))))))
440 (stencil . ,ly:text-interface::print)
441 (after-line-breaking . ,ly:chord-name::after-line-breaking)
446 (meta . ((class . Item)
447 (interfaces . (font-interface
448 rhythmic-grob-interface
456 (stencil . ,ly:text-interface::print)
458 (no-spacing-rods . #t)
459 (Y-offset . ,ly:side-position-interface::y-aligned-side)
460 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
463 (staff-padding . 0.5)
464 (script-priority . 200)
465 ;; todo: add X self alignment?
469 (meta . ((class . Item)
470 (interfaces . (text-script-interface
472 side-position-interface
477 (break-align-symbol . custos)
480 (stencil . ,ly:custos::print)
482 (break-visibility . ,end-of-line-visible)
484 (neutral-direction . ,DOWN)
485 (Y-offset . ,ly:staff-symbol-referencer::callback)
487 (first-note . (minimum-fixed-space . 0.0))
488 (right-edge . (extra-space . 0.1))))
489 (meta . ((class . Item)
492 staff-symbol-referencer-interface
494 break-aligned-interface))))))
501 (positioning-done . ,ly:dot-column::calc-positioning-done)
502 (X-extent . ,ly:axis-group-interface::width)
504 (X-offset . ,ly:dot-column::side-position)
505 (meta . ((class . Item)
506 (interfaces . (dot-column-interface
507 axis-group-interface))))))
512 (stencil . ,ly:dots::print)
515 (meta . ((class . Item)
516 (interfaces . (font-interface
517 staff-symbol-referencer-interface
522 (stencil . ,ly:percent-repeat-item-interface::double-percent)
525 (font-encoding . fetaMusic)
528 (break-align-symbol . staff-bar)
529 (break-visibility . ,begin-of-line-invisible)
530 (meta . ((class . Item)
531 (interfaces . (font-interface
532 break-aligned-interface
533 percent-repeat-interface))))))
535 (DoublePercentRepeatCounter
538 (stencil . ,ly:text-interface::print)
539 (X-offset . ,(ly:make-simple-closure `(,+ ,(ly:make-simple-closure (list ly:self-alignment-interface::centered-on-y-parent))
540 ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self)))))
541 (Y-offset . ,ly:side-position-interface::y-aligned-side)
542 (font-encoding . fetaNumber)
543 (self-alignment-X . 0)
547 (staff-padding . 0.25)
549 (meta . ((class . Item)
550 (interfaces . (side-position-interface
551 self-alignment-interface
552 percent-repeat-interface
558 (Y-offset . ,ly:side-position-interface::y-aligned-side)
559 (staff-padding . 0.1)
561 (avoid-slur . outside)
563 (minimum-space . 1.2)
567 (Y-extent . ,ly:axis-group-interface::height)
568 (X-extent . ,ly:axis-group-interface::width)
571 (meta . ((class . Spanner)
572 (interfaces . (axis-group-interface
574 dynamic-line-spanner-interface
575 side-position-interface))))))
582 (stencil . ,ly:text-interface::print)
583 (direction . ,ly:script-interface::calc-direction)
585 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
586 (self-alignment-X . 0)
587 (Y-offset . ,ly:self-alignment-interface::y-aligned-on-self)
588 (self-alignment-Y . 0)
590 (font-encoding . fetaDynamic)
591 (font-shape . italic)
592 (avoid-slur . around)
593 (no-spacing-rods . #t)
594 (script-priority . 100)
595 (meta . ((class . Item)
596 (interfaces . (font-interface
598 self-alignment-interface
600 script-interface))))))
605 (stencil . ,ly:dynamic-text-spanner::print)
607 ;; rather ugh with NCSB
608 ;; (font-series . bold)
609 (font-shape . italic)
610 (style . dashed-line)
612 ;; need to blend with dynamic texts.
614 (bound-padding . 0.75)
615 (dash-fraction . 0.2)
617 (meta . ((class . Spanner)
618 (interfaces . (font-interface
621 dynamic-text-spanner-interface
622 spanner-interface))))))
627 ;; sync with TextScript (?)
630 (avoid-slur . around)
632 (staff-padding . 0.5)
633 (self-alignment-X . 0)
634 (self-alignment-Y . 0)
635 (script-priority . 100)
637 (stencil . ,ly:text-interface::print)
638 (direction . ,ly:script-interface::calc-direction)
640 (font-encoding . fetaNumber)
641 (font-size . -5) ; don't overlap when next to heads.
642 (meta . ((class . Item)
643 (interfaces . (finger-interface
645 text-script-interface
647 side-position-interface
648 self-alignment-interface
654 (zigzag-width . 0.75)
659 (stencil . ,ly:line-spanner::print)
660 (after-line-breaking . ,ly:line-spanner::after-line-breaking)
663 (meta . ((class . Spanner)
664 (interfaces . (line-interface
665 line-spanner-interface))))))
671 (meta . ((class . Item)
672 (interfaces . (grid-point-interface))))))
677 (X-extent . ,ly:grid-line-interface::width)
678 (stencil . ,ly:grid-line-interface::print)
680 (self-alignment-X . ,CENTER)
681 (X-offset . ,(ly:make-simple-closure
682 `(,+ ,(ly:make-simple-closure (list ly:self-alignment-interface::centered-on-x-parent))
683 ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self)))))
685 (meta . ((class . Item)
686 (interfaces . (self-alignment-interface
687 grid-line-interface))))))
693 (stencil . ,ly:hairpin::print)
694 (springs-and-rods . ,ly:spanner::set-spacing-rods)
695 (after-line-breaking . ,ly:hairpin::after-line-breaking)
699 (minimum-length . 2.0)
700 (bound-padding . 1.0)
701 (self-alignment-Y . 0)
702 (Y-offset . ,ly:self-alignment-interface::y-aligned-on-self)
703 (meta . ((class . Spanner)
704 (interfaces . (hairpin-interface
706 self-alignment-interface
708 spanner-interface))))))
713 (stencil . ,ly:horizontal-bracket::print)
714 (Y-offset . ,ly:side-position-interface::y-aligned-side)
716 (staff-padding . 0.2)
719 (bracket-flare . (0.5 . 0.5))
720 (meta . ((class . Spanner)
721 (interfaces . (horizontal-bracket-interface
722 side-position-interface
724 spanner-interface))))))
728 (stencil . ,ly:system-start-text::print)
729 (X-offset . ,ly:side-position-interface::x-aligned-side)
731 (self-alignment-Y . ,CENTER)
732 (meta . ((class . Spanner)
733 (interfaces . (system-start-text-interface
734 side-position-interface
740 (stencil . ,ly:key-signature-interface::print)
743 (time-signature . (extra-space . 1.25))
744 (staff-bar . (extra-space . 0.6))
745 (key-signature . (extra-space . 0.5))
746 (right-edge . (extra-space . 0.5))
747 (first-note . (fixed-space . 2.5))))
748 (Y-offset . ,ly:staff-symbol-referencer::callback)
749 (break-align-symbol . key-cancellation)
750 (break-visibility . ,begin-of-line-invisible)
753 (meta . ((class . Item)
754 (interfaces . (key-signature-interface
756 break-aligned-interface))))))
760 (stencil . ,ly:key-signature-interface::print)
763 (time-signature . (extra-space . 1.15))
764 (staff-bar . (extra-space . 1.1))
765 (right-edge . (extra-space . 0.5))
766 (first-note . (fixed-space . 2.5))))
767 (Y-offset . ,ly:staff-symbol-referencer::callback)
768 (break-align-symbol . key-signature)
769 (break-visibility . ,begin-of-line-visible)
772 (meta . ((class . Item)
773 (interfaces . (key-signature-interface
775 break-aligned-interface))))))
779 (stencil . ,ly:tie::print)
780 (control-points . ,ly:laissez-vibrer-tie::calc-control-points)
781 (direction . ,ly:laissez-vibrer-tie::calc-direction)
783 (details . ((ratio . 0.333)
784 (height-limit . 1.0)))
786 (meta . ((class . Item)
787 (interfaces . (laissez-vibrer-tie-interface))
791 (LaissezVibrerTieColumn
795 (positioning-done . ,ly:laissez-vibrer-tie-column::calc-positioning-done)
796 (meta . ((class . Item)
797 (interfaces . (laissez-vibrer-tie-column-interface))
804 (springs-and-rods . ,ly:ledger-line-spanner::set-spacing-rods)
806 (stencil . ,ly:ledger-line-spanner::print)
810 (minimum-length-fraction . 0.25)
811 (length-fraction . 0.25)
813 (meta . ((class . Spanner)
814 (interfaces . (ledger-line-interface))))))
818 (break-align-symbol . left-edge)
821 (break-visibility . ,center-invisible)
823 (custos . (extra-space . 0.0))
824 (ambitus . (extra-space . 2.0))
825 (time-signature . (extra-space . 1.0))
826 (staff-bar . (extra-space . 0.0))
827 (breathing-sign . (minimum-space . 0.0))
828 (clef . (extra-space . 0.8))
829 (first-note . (fixed-space . 2.0))
830 (right-edge . (extra-space . 0.0))
831 (key-signature . (extra-space . 0.0))
832 (key-cancellation . (extra-space . 0.0))
834 (meta . ((class . Item)
835 (interfaces . (break-aligned-interface))))))
839 ;; ugh. A ligature bracket is totally different from
844 (edge-height . (0.7 . 0.7))
845 (shorten-pair . (-0.2 . -0.2))
847 (positions . ,ly:tuplet-bracket::calc-positions)
848 (stencil . ,ly:tuplet-bracket::print)
849 (staff-padding . 0.25)
850 (connect-to-neighbor . ,ly:tuplet-bracket::calc-connect-to-neighbors)
851 (control-points . ,ly:tuplet-bracket::calc-control-points)
852 (meta . ((class . Spanner)
853 (interfaces . (line-interface
854 tuplet-bracket-interface))))))
862 (minimum-length . 0.3)
863 (minimum-distance . 0.1)
865 (springs-and-rods . ,ly:hyphen-spanner::set-spacing-rods)
867 (stencil . ,ly:hyphen-spanner::print)
870 (meta . ((class . Spanner)
871 (interfaces . (lyric-interface
873 lyric-hyphen-interface
874 spanner-interface))))))
879 (stencil . ,ly:lyric-extender::print)
881 (thickness . 0.8) ; line-thickness
882 (minimum-length . 1.5)
884 (meta . ((class . Spanner)
885 (interfaces . (lyric-interface
886 lyric-extender-interface))))))
889 . ((minimum-distance . 0.3)
890 (springs-and-rods . ,ly:hyphen-spanner::set-spacing-rods)
894 (meta . ((class . Spanner)
895 (interfaces . (spanner-interface
896 lyric-hyphen-interface spacing-interface))
901 (stencil . ,ly:text-interface::print)
902 (X-offset . ,ly:self-alignment-interface::aligned-on-x-parent)
903 (self-alignment-X . 0)
905 (font-series . bold-narrow)
907 (meta . ((class . Item)
908 (interfaces . (rhythmic-grob-interface
909 lyric-syllable-interface
910 self-alignment-interface
917 (Y-offset . ,ly:side-position-interface::y-aligned-side)
920 (stencil . ,ly:measure-grouping::print)
927 (meta . ((class . Spanner)
928 (interfaces . (side-position-interface
929 measure-grouping-interface))))))
933 (neutral-direction . ,DOWN)
934 (meta . ((class . Item)
935 (interfaces . (melody-spanner-interface spacing-interface))))))
940 (stencil . ,ly:mensural-ligature::print)
942 (meta . ((class . Spanner)
943 (interfaces . (mensural-ligature-interface
948 (stencil . ,ly:text-interface::print)
949 (Y-offset . ,ly:side-position-interface::y-aligned-side)
953 (meta . ((class . Item)
954 (interfaces . (text-interface
955 side-position-interface
957 metronome-mark-interface))))))
962 (stencil . ,ly:multi-measure-rest::print)
963 (springs-and-rods . ,ly:multi-measure-rest::set-spacing-rods)
964 (Y-offset . ,ly:staff-symbol-referencer::callback)
967 (thick-thickness . 6.6)
968 (hair-thickness . 2.0)
970 (meta . ((class . Spanner)
971 (interfaces . (multi-measure-rest-interface
972 multi-measure-interface
975 staff-symbol-referencer-interface))))))
978 (MultiMeasureRestNumber
980 (springs-and-rods . ,ly:multi-measure-rest::set-spacing-rods)
981 (stencil . ,ly:text-interface::print)
982 (X-offset . ,(ly:make-simple-closure
983 `(,+ ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self))
984 ,(ly:make-simple-closure (list ly:self-alignment-interface::x-centered-on-y-parent)))))
985 (Y-offset . ,ly:side-position-interface::y-aligned-side)
988 (self-alignment-X . 0)
991 (staff-padding . 0.4)
992 (font-encoding . fetaNumber)
993 (meta . ((class . Spanner)
994 (interfaces . (side-position-interface
995 multi-measure-interface
996 self-alignment-interface
1001 (MultiMeasureRestText
1003 (stencil . ,ly:text-interface::print)
1004 (X-offset . ,(ly:make-simple-closure
1005 `(,+ ,(ly:make-simple-closure (list ly:self-alignment-interface::x-centered-on-y-parent))
1006 ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self)))))
1008 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1009 (self-alignment-X . 0)
1012 (staff-padding . 0.25)
1013 (meta . ((class . Spanner)
1014 (interfaces . (side-position-interface
1015 multi-measure-interface
1016 self-alignment-interface
1018 text-interface))))))
1024 (X-extent . ,ly:axis-group-interface::width)
1025 (Y-extent . ,ly:axis-group-interface::height)
1026 (positioning-done . ,ly:note-collision-interface::calc-positioning-done)
1028 (meta . ((class . Item)
1029 (interfaces . (note-collision-interface
1030 axis-group-interface))))))
1035 (X-extent . ,ly:axis-group-interface::width)
1036 (Y-extent . ,ly:axis-group-interface::height)
1038 (meta . ((class . Item)
1039 (interfaces . (axis-group-interface
1040 note-column-interface))))))
1045 (stencil . ,ly:note-head::print)
1046 (stem-attachment . ,ly:note-head::calc-stem-attachment)
1047 (glyph-name . ,note-head::calc-glyph-name)
1048 (Y-offset . ,ly:staff-symbol-referencer::callback)
1049 (X-offset . ,ly:note-head::stem-x-shift)
1050 (meta . ((class . Item)
1051 (interfaces . (rhythmic-grob-interface
1052 rhythmic-head-interface
1056 staff-symbol-referencer-interface))))))
1060 (stem-spacing-correction . 0.5)
1061 (same-direction-correction . 0.25)
1062 ;; Changed this from 0.75.
1063 ;; If you ever change this back, please document! --hwn
1064 (knee-spacing-correction . 1.0)
1066 (meta . ((class . Item)
1067 (interfaces . (spacing-interface
1068 note-spacing-interface))))))
1073 (stencil . ,ly:text-interface::print)
1075 (meta . ((class . Item)
1076 (interfaces . (note-name-interface
1078 font-interface))))))
1082 (self-alignment-X . 0)
1083 (break-visibility . ,begin-of-line-visible)
1084 (X-offset . ,(ly:make-simple-closure
1085 `(,+ ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self))
1086 ,(ly:make-simple-closure (list ly:self-alignment-interface::centered-on-x-parent)))))
1088 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1090 (stencil . ,ly:text-interface::print)
1093 ;; no Y dimensions, because of lyrics under tenor clef.
1094 (Y-extent . (0 . 0))
1095 (font-shape . italic)
1097 (staff-padding . 0.2)
1099 (meta . ((class . Item)
1100 (interfaces . (text-interface
1101 self-alignment-interface
1102 side-position-interface
1103 font-interface))))))
1107 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1109 (stencil . ,ly:ottava-bracket::print)
1111 (font-shape . italic)
1112 (shorten-pair . (0.0 . -0.6))
1113 (staff-padding . 1.0)
1115 (minimum-length . 1.0)
1116 (dash-fraction . 0.3)
1117 (edge-height . (0 . 1.2))
1119 (meta . ((class . Spanner)
1120 (interfaces . (ottava-bracket-interface
1121 horizontal-bracket-interface
1123 side-position-interface
1125 text-interface))))))
1131 (before-line-breaking . ,ly:paper-column::before-line-breaking)
1132 ;; (stencil . ,ly:paper-column::print)
1133 (X-extent . ,ly:axis-group-interface::width)
1137 ;; (font-size . -6) (font-name . "sans") (Y-extent . #f)
1138 (meta . ((class . Paper_column)
1139 (interfaces . (paper-column-interface
1140 axis-group-interface
1141 spaceable-grob-interface))))))
1145 (stencil . ,parentheses-item::print)
1148 (meta . ((class . Item)
1149 (interfaces . (parentheses-interface font-interface))))
1153 . ((details . ,default-slur-details)
1155 (control-points . ,ly:slur::calc-control-points)
1156 (direction . ,ly:slur::calc-direction)
1157 (springs-and-rods . ,ly:spanner::set-spacing-rods)
1158 (Y-extent . ,ly:slur::height)
1159 (stencil . ,ly:slur::print)
1163 (minimum-length . 1.5)
1164 (height-limit . 2.0)
1166 (meta . ((class . Spanner)
1167 (interfaces . (slur-interface))))))
1169 (NonMusicalPaperColumn
1173 (before-line-breaking . ,ly:paper-column::before-line-breaking)
1174 (X-extent . ,ly:axis-group-interface::width)
1175 ;; (stencil . ,ly:paper-column::print)
1179 ;; debugging stuff: print column number.
1180 ;; (font-size . -6) (font-name . "sans") (Y-extent . #f)
1182 (meta . ((class . Paper_column)
1183 (interfaces . (paper-column-interface
1184 axis-group-interface
1185 spaceable-grob-interface))))))
1190 (springs-and-rods . ,ly:multi-measure-rest::set-spacing-rods)
1191 (stencil . ,ly:multi-measure-rest::percent)
1195 (font-encoding . fetaMusic)
1196 (meta . ((class . Spanner)
1197 (interfaces . (multi-measure-rest-interface
1199 percent-repeat-interface))))))
1200 (PercentRepeatCounter
1202 (stencil . ,ly:text-interface::print)
1203 (X-offset . ,(ly:make-simple-closure
1204 `(,+ ,(ly:make-simple-closure (list ly:self-alignment-interface::x-centered-on-y-parent))
1205 ,(ly:make-simple-closure (list ly:self-alignment-interface::x-aligned-on-self)))))
1206 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1207 (self-alignment-X . 0)
1210 (staff-padding . 0.25)
1212 (font-encoding . fetaNumber)
1213 (meta . ((class . Spanner)
1214 (interfaces . (side-position-interface
1215 self-alignment-interface
1216 percent-repeat-interface
1218 text-interface))))))
1220 ;; an example of a text spanner
1224 (stencil . ,ly:piano-pedal-bracket::print)
1227 (bound-padding . 1.0)
1229 (bracket-flare . (0.5 . 0.5))
1230 (edge-height . (1.0 . 1.0))
1231 (shorten-pair . (0.0 . 0.0))
1233 (meta . ((class . Spanner)
1234 (interfaces . (line-interface
1235 piano-pedal-interface
1236 piano-pedal-bracket-interface))))))
1240 (stencil . ,ly:text-interface::print)
1241 (X-offset . ,(ly:make-simple-closure
1242 `(,+ ,(ly:make-simple-closure
1243 `(,ly:self-alignment-interface::x-aligned-on-self))
1244 ,(ly:make-simple-closure
1245 `(,ly:self-alignment-interface::centered-on-x-parent)))
1247 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1248 (self-alignment-X . 0)
1253 (break-visibility . ,end-of-line-invisible)
1255 (meta . ((class . Item)
1256 (interfaces . (text-interface
1257 side-position-interface
1260 self-alignment-interface))))))
1265 (stencil . ,ly:percent-repeat-item-interface::beat-slash)
1268 (meta . ((class . Item)
1269 (interfaces . (percent-repeat-interface))))))
1272 (stencil . ,ly:rest::print)
1273 (X-extent . ,ly:rest::width)
1274 (Y-extent . ,ly:rest::height)
1275 (Y-offset . ,ly:rest::y-offset-callback)
1276 (minimum-distance . 0.25)
1277 (meta . ((class . Item)
1278 (interfaces . (font-interface
1279 rhythmic-head-interface
1280 rhythmic-grob-interface
1281 staff-symbol-referencer-interface
1282 rest-interface))))))
1286 (minimum-distance . 0.75)
1287 (positioning-done . ,ly:rest-collision::calc-positioning-done)
1289 (meta . ((class . Item)
1290 (interfaces . (rest-collision-interface))))))
1294 ;; don't set direction here: it breaks staccato.
1296 ;; This value is sensitive: if too large, staccato dots will move a
1299 (staff-padding . 0.25)
1300 ;; (script-priority . 0) priorities for scripts, see script.scm
1301 (X-offset . , ly:self-alignment-interface::centered-on-x-parent)
1304 (stencil . ,ly:script-interface::print)
1305 (direction . ,ly:script-interface::calc-direction)
1307 (font-encoding . fetaMusic)
1308 (meta . ((class . Item)
1309 (interfaces . (script-interface
1310 side-position-interface
1311 font-interface))))))
1316 (before-line-breaking . ,ly:script-column::before-line-breaking)
1318 (meta . ((class . Item)
1319 (interfaces . (script-column-interface))))))
1325 (meta . ((class . Item)
1326 (interfaces . (spacing-interface
1327 separation-item-interface))))))
1329 (SeparatingGroupSpanner
1332 (springs-and-rods . ,ly:separating-group-spanner::set-spacing-rods)
1334 (meta . ((class . Spanner)
1335 (interfaces . (only-prebreak-interface
1337 separation-spanner-interface))))))
1340 . ((details . ,default-slur-details)
1342 (control-points . ,ly:slur::calc-control-points)
1343 (direction . ,ly:slur::calc-direction)
1344 (springs-and-rods . ,ly:spanner::set-spacing-rods)
1345 (Y-extent . ,ly:slur::height)
1346 (stencil . ,ly:slur::print)
1349 (line-thickness . 0.8)
1350 (minimum-length . 1.5)
1352 (height-limit . 2.0)
1354 (meta . ((class . Spanner)
1355 (interfaces . (slur-interface))))))
1360 (springs-and-rods . ,ly:spacing-spanner::set-springs)
1361 (average-spacing-wishes . #t)
1362 (grace-space-factor . 0.6)
1363 (shortest-duration-space . 2.0)
1364 (spacing-increment . 1.2)
1365 (base-shortest-duration . ,(ly:make-moment 3 16))
1366 (meta . ((class . Spanner)
1367 (interfaces . (spacing-interface
1368 spacing-spanner-interface))))))
1372 (break-align-symbol . staff-bar)
1377 (stencil . ,ly:span-bar::print)
1378 (bar-size . ,ly:span-bar::calc-bar-size)
1379 (X-extent . ,ly:span-bar::width)
1380 (glyph-name . ,ly:span-bar::calc-glyph-name)
1381 (before-line-breaking . ,ly:span-bar::before-line-breaking)
1386 ;; Ross. page 151 lists other values, we opt for a leaner look
1390 (hair-thickness . 1.6)
1391 (thick-thickness . 6.0)
1392 (meta . ((class . Item)
1393 (interfaces . (span-bar-interface
1395 bar-line-interface))))))
1399 (stencil . ,ly:text-interface::print)
1401 (font-series . bold)
1403 (X-offset . ,ly:side-position-interface::x-aligned-side)
1406 (meta . ((class . Item)
1407 (interfaces . (side-position-interface
1408 stanza-number-interface
1410 font-interface))))))
1415 (stencil . ,print-circled-text-callback)
1418 (staff-padding . 0.5)
1419 (self-alignment-X . 0)
1420 (self-alignment-Y . 0)
1421 (script-priority . 100)
1422 (font-encoding . fetaNumber)
1423 (font-size . -5) ; don't overlap when next to heads.
1424 (meta . ((class . Item)
1425 (interfaces . (string-number-interface
1427 text-script-interface
1429 side-position-interface
1430 self-alignment-interface
1431 item-interface))))))
1436 (stem-spacing-correction . 0.4)
1437 (meta . ((class . Item)
1438 (interfaces . (spacing-interface
1439 staff-spacing-interface))))))
1444 (stencil . ,ly:text-interface::print)
1446 (direction . ,RIGHT)
1447 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
1448 (no-spacing-rods . #t)
1449 (padding . 0.0) ;; padding relative to SostenutoPedalLineSpanner
1450 (font-shape . italic)
1451 (self-alignment-X . 0)
1452 (meta . ((class . Item)
1453 (interfaces . (text-interface
1454 self-alignment-interface
1455 font-interface))))))
1457 (SostenutoPedalLineSpanner
1461 (X-extent . ,ly:axis-group-interface::height)
1463 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1467 (minimum-space . 1.0)
1469 (meta . ((class . Spanner)
1470 (interfaces . (piano-pedal-interface
1471 axis-group-interface
1472 side-position-interface))))))
1476 (Y-extent . ,ly:staff-symbol::height)
1477 (stencil . ,ly:staff-symbol::print)
1479 (ledger-line-thickness . (1.0 . 0.1))
1481 (meta . ((class . Spanner)
1482 (interfaces . (staff-symbol-interface))))))
1486 (direction . ,ly:stem::calc-direction)
1487 (default-direction . ,ly:stem::calc-default-direction)
1488 (stem-end-position . ,ly:stem::calc-stem-end-position)
1489 (stem-info . ,ly:stem::calc-stem-info)
1490 (positioning-done . ,ly:stem::calc-positioning-done)
1491 (stencil . ,ly:stem::print)
1492 (X-extent . ,ly:stem::width)
1493 (Y-extent . ,ly:stem::height)
1494 (length . ,ly:stem::calc-length)
1500 ;; 3.5 (or 3 measured from note head) is standard length
1501 ;; 32nd, 64th flagged stems should be longer
1502 (lengths . (3.5 3.5 3.5 4.5 5.0))
1504 ;; FIXME. 3.5 yields too long beams (according to Ross and
1505 ;; looking at Baerenreiter examples) for a number of common
1506 ;; boundary cases. Subtracting half a beam thickness fixes
1507 ;; this, but the bug may well be somewhere else.
1509 ;; FIXME this should come from 'lengths
1510 (beamed-lengths . (3.26 3.5 3.6))
1512 ;; The 'normal' minima
1513 (beamed-minimum-free-lengths . (1.83 1.5 1.25))
1514 ;(beamed-minimum-free-lengths . (2.0 1.83 1.25))
1516 ;; The 'extreme case' minima
1517 (beamed-extreme-minimum-free-lengths . (2.0 1.25))
1519 ;; Stems in unnatural (forced) direction should be shortened by
1520 ;; one staff space, according to [Roush & Gourlay].
1521 ;; Flagged stems we shorten only half a staff space.
1522 (stem-shorten . (1.0 0.5))
1527 ;; default stem direction for note on middle line
1528 (neutral-direction . ,DOWN)
1530 ;; We use the normal minima as minimum for the ideal lengths,
1531 ;; and the extreme minima as abolute minimum length.
1533 (X-offset . ,ly:stem::offset-callback)
1534 (Y-offset . ,ly:staff-symbol-referencer::callback)
1535 (meta . ((class . Item)
1536 (interfaces . (stem-interface
1537 font-interface))))))
1541 (Y-extent . ,ly:stem-tremolo::height)
1542 (stencil . ,ly:stem-tremolo::print)
1544 (slope . ,ly:stem-tremolo::calc-slope)
1545 (beam-width . 1.6) ; staff-space
1546 (beam-thickness . 0.48) ; staff-space
1547 (meta . ((class . Item)
1548 (interfaces . (stem-tremolo-interface))))))
1552 (no-spacing-rods . #t)
1553 (stencil . ,ly:sustain-pedal::print)
1554 (self-alignment-X . 0)
1555 (direction . ,RIGHT)
1556 (padding . 0.0) ;; padding relative to SustainPedalLineSpanner
1557 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
1558 (meta . ((class . Item)
1559 (interfaces . (piano-pedal-interface
1560 text-spanner-interface
1562 self-alignment-interface
1563 font-interface))))))
1565 (SustainPedalLineSpanner
1568 (X-extent . ,ly:axis-group-interface::height)
1569 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1572 (staff-padding . 1.2)
1573 (minimum-space . 1.0)
1575 (meta . ((class . Spanner)
1576 (interfaces . (piano-pedal-interface
1577 axis-group-interface
1578 side-position-interface))))))
1583 (X-extent . ,ly:axis-group-interface::width)
1584 (Y-extent . ,ly:axis-group-interface::height)
1585 (meta . ((class . System)
1586 (interfaces . (system-interface
1587 axis-group-interface))))))
1593 (stencil . ,ly:system-start-delimiter::print)
1594 (collapse-height . 5.0)
1595 (X-offset . ,ly:side-position-interface::x-aligned-side)
1597 (font-encoding . fetaBraces)
1599 (meta . ((class . Spanner)
1600 (interfaces . (system-start-delimiter-interface
1601 side-position-interface
1602 font-interface))))))
1608 (X-offset . ,ly:side-position-interface::x-aligned-side)
1610 (stencil . ,ly:system-start-delimiter::print)
1611 (style . line-bracket)
1613 (meta . ((class . Spanner)
1614 (interfaces . (font-interface
1615 side-position-interface
1616 system-start-delimiter-interface))))))
1621 (X-offset . ,ly:side-position-interface::x-aligned-side)
1623 (stencil . ,ly:system-start-delimiter::print)
1625 (collapse-height . 5.0)
1627 (meta . ((class . Spanner)
1628 (interfaces . (font-interface
1629 side-position-interface
1630 system-start-delimiter-interface))))))
1636 (X-offset . ,ly:side-position-interface::x-aligned-side)
1640 (stencil . ,ly:system-start-delimiter::print)
1641 (meta . ((class . Spanner)
1642 (interfaces . (side-position-interface
1643 system-start-delimiter-interface))))))
1649 (stencil . ,ly:text-interface::print)
1650 (Y-offset . ,ly:staff-symbol-referencer::callback)
1652 (stem-attachment . (1.0 . 1.35))
1653 (font-series . bold)
1654 (meta . ((class . Item)
1656 . (rhythmic-head-interface
1657 font-interface rhythmic-grob-interface
1659 staff-symbol-referencer-interface
1660 text-interface))))))
1664 (no-spacing-rods . #t)
1665 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
1668 ;; sync with Fingering ?
1670 (staff-padding . 0.5)
1672 (stencil . ,ly:text-interface::print)
1673 (direction . ,ly:script-interface::calc-direction)
1675 (avoid-slur . around)
1676 (slur-padding . 0.5)
1677 (script-priority . 200)
1678 ;; todo: add X self alignment?
1679 (meta . ((class . Item)
1680 (interfaces . (text-script-interface
1682 side-position-interface
1683 font-interface))))))
1687 (stencil . ,ly:text-spanner::print)
1688 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1689 (font-shape . italic)
1690 (style . dashed-line)
1691 (staff-padding . 0.8)
1692 (dash-fraction . 0.2)
1696 (meta . ((class . Spanner)
1697 (interfaces . (text-spanner-interface
1698 side-position-interface
1699 font-interface))))))
1703 (control-points . ,ly:tie::calc-control-points)
1704 (avoid-slur . inside)
1705 (direction . ,ly:tie::calc-direction)
1706 (stencil . ,ly:tie::print)
1708 ;; for a full list, see tie-helper.cc
1710 (center-staff-line-clearance . 0.6)
1711 (tip-staff-line-clearance . 0.45)
1712 (note-head-gap . 0.2)
1714 (height-limit . 1.0)
1715 (horizontal-distance-penalty-factor . 10)
1716 (tie-tie-collision-distance . 0.45)
1717 (tie-tie-collision-penalty . 25.0)
1718 (intra-space-threshold . 1.25)
1719 (outer-tie-vertical-distance-symmetry-penalty-factor . 10)
1720 (outer-tie-length-symmetry-penalty-factor . 10)
1721 (between-length-limit . 1.0)))
1723 (line-thickness . 0.8)
1724 (meta . ((class . Spanner)
1725 (interfaces . (tie-interface))))
1730 (positioning-done . ,ly:tie-column::calc-positioning-done)
1731 (before-line-breaking . ,ly:tie-column::before-line-breaking)
1734 (meta . ((class . Spanner)
1735 (interfaces . (tie-column-interface))))))
1739 (stencil . ,ly:time-signature::print)
1740 (break-align-symbol . time-signature)
1741 (break-visibility . ,all-visible)
1743 (first-note . (fixed-space . 2.0))
1744 (right-edge . (extra-space . 0.5))
1745 (staff-bar . (minimum-space . 2.0))))
1748 (meta . ((class . Item)
1749 (interfaces . (time-signature-interface
1750 break-aligned-interface
1751 font-interface))))))
1755 (stencil . ,ly:dynamic-text-spanner::print)
1756 (edge-text . ,(cons (make-musicglyph-markup "scripts.trill")
1759 (staff-padding . 1.0)
1762 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1764 (meta . ((class . Spanner)
1765 (interfaces . (text-spanner-interface
1766 side-position-interface
1767 font-interface))))))
1769 (TrillPitchAccidental
1770 . ((X-offset . ,ly:side-position-interface::x-aligned-side)
1775 (stencil . ,ly:accidental-interface::print)
1776 (meta . ((class . Item)
1777 (interfaces . (item-interface
1778 accidental-interface
1779 side-position-interface
1780 font-interface))))))
1783 . ((X-offset . ,ly:side-position-interface::x-aligned-side)
1786 (stencil . ,parenthesize-elements)
1787 (direction . ,RIGHT)
1790 (meta . ((class . Item)
1791 (interfaces . (side-position-interface
1793 rhythmic-head-interface
1795 accidental-interface
1796 axis-group-interface))))))
1800 (stencil . ,ly:note-head::print)
1802 (Y-offset . ,ly:staff-symbol-referencer::callback)
1804 (meta . ((class . Item)
1805 (interfaces . (item-interface
1806 rhythmic-head-interface
1808 pitched-trill-interface
1810 staff-symbol-referencer-interface))))))
1816 (edge-height . (0.7 . 0.7))
1817 (shorten-pair . (-0.2 . -0.2))
1818 (staff-padding . 0.25)
1820 (direction . ,ly:tuplet-bracket::calc-direction)
1821 (positions . ,ly:tuplet-bracket::calc-positions)
1822 (connect-to-neighbor . ,ly:tuplet-bracket::calc-connect-to-neighbors)
1823 (control-points . ,ly:tuplet-bracket::calc-control-points)
1824 (stencil . ,ly:tuplet-bracket::print)
1826 (meta . ((class . Spanner)
1827 (interfaces . (line-interface
1828 tuplet-bracket-interface))))))
1832 (stencil . ,ly:tuplet-number::print)
1833 (font-shape . italic)
1835 (avoid-slur . inside)
1836 (meta . ((class . Spanner)
1837 (interfaces . (text-interface tuplet-number-interface
1838 font-interface))))))
1842 (stencil . ,ly:text-interface::print)
1843 (font-shape . italic)
1844 (no-spacing-rods . #t)
1845 (self-alignment-X . 0)
1846 (direction . ,RIGHT)
1847 (padding . 0.0) ;; padding relative to UnaCordaPedalLineSpanner
1848 (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
1849 (meta . ((class . Item)
1850 (interfaces . (text-interface
1851 self-alignment-interface
1852 font-interface))))))
1854 (UnaCordaPedalLineSpanner
1857 (X-extent . ,ly:axis-group-interface::height)
1858 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1861 (staff-padding . 1.2)
1862 (minimum-space . 1.0)
1864 (meta . ((class . Spanner)
1865 (interfaces . (piano-pedal-interface
1866 axis-group-interface
1867 side-position-interface))))))
1873 (stencil . ,ly:vaticana-ligature::print)
1874 (meta . ((class . Spanner)
1875 (interfaces . (vaticana-ligature-interface
1876 font-interface))))))
1881 (positioning-done . ,ly:align-interface::calc-positioning-done)
1882 (after-line-breaking . ,ly:align-interface::stretch-after-break)
1883 (Y-extent . ,ly:axis-group-interface::height)
1884 (X-extent . ,ly:axis-group-interface::width)
1886 (meta . ((class . Spanner)
1887 (interfaces . (align-interface
1888 axis-group-interface))))))
1892 (Y-offset . ,ly:hara-kiri-group-spanner::force-hara-kiri-callback)
1894 (Y-extent . ,ly:hara-kiri-group-spanner::y-extent)
1895 (X-extent . ,ly:axis-group-interface::width)
1896 (meta . ((class . Spanner)
1897 (interfaces . (axis-group-interface
1898 hara-kiri-group-interface
1899 vertically-spaceable-interface))))))
1904 (stencil . ,ly:volta-bracket-interface::print)
1905 (after-line-breaking . ,ly:volta-bracket-interface::after-line-breaking)
1908 (font-encoding . fetaNumber)
1909 (Y-offset . ,ly:side-position-interface::y-aligned-side)
1911 (thickness . 1.6) ;; line-thickness
1912 (edge-height . (2.0 . 2.0)) ;; staff-space;
1915 (meta . ((class . Spanner)
1916 (interfaces . (volta-bracket-interface
1917 horizontal-bracket-interface
1920 side-position-interface
1932 (stencil . ,ly:line-spanner::print)
1933 (after-line-breaking . ,ly:line-spanner::after-line-breaking)
1934 (meta . ((class . Spanner)
1935 (interfaces . (line-spanner-interface
1941 (define (completize-grob-entry x)
1942 "Transplant assoc key into 'name entry of 'meta of X. Set interfaces for Item, Spanner etc.
1944 ;; (display (car x))
1946 (let* ((name-sym (car x))
1947 (grob-entry (cdr x))
1948 (meta-entry (cdr (assoc 'meta grob-entry)))
1949 (class (cdr (assoc 'class meta-entry)))
1951 (cdr (assoc 'interfaces meta-entry))))
1955 (set! ifaces-entry (cons 'item-interface ifaces-entry)))
1956 ((eq? 'Spanner class)
1957 (set! ifaces-entry (cons 'spanner-interface ifaces-entry)))
1958 ((eq? 'Paper_column class)
1959 (set! ifaces-entry (cons 'item-interface
1960 (cons 'paper-column-interface ifaces-entry))))
1961 ((eq? 'System class)
1962 (set! ifaces-entry (cons 'system-interface
1963 (cons 'spanner-interface ifaces-entry))))
1965 (ly:warning "Unknown class ~a" class)))
1966 (set! ifaces-entry (cons 'grob-interface ifaces-entry))
1968 (set! meta-entry (assoc-set! meta-entry 'name name-sym))
1969 (set! meta-entry (assoc-set! meta-entry 'interfaces
1971 (set! grob-entry (assoc-set! grob-entry 'meta meta-entry))
1972 (cons name-sym grob-entry)))
1974 (set! all-grob-descriptions (map completize-grob-entry all-grob-descriptions))
1976 ;; (display (map pair? all-grob-descriptions))
1978 ;; make sure that \property Foo.Bar =\turnOff doesn't complain
1981 ;; (display (car x)) (newline)
1983 (set-object-property! (car x) 'translation-type? list?)
1984 (set-object-property! (car x) 'is-grob? #t))
1985 all-grob-descriptions)
1987 (set! all-grob-descriptions (sort all-grob-descriptions alist<?))