1 ;;;; grob-description.scm -- part of generated backend documentation
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--20.301 Han-Wen Nienhuys <hanwen@cs.uu.nl>
6 ;;;; Jan Nieuwenhuizen <janneke@gnu.org>
8 ;;;; distances are given in stafflinethickness (thicknesses) and
9 ;;;; staffspace (distances)
11 ;;;; WARNING: the meta field should be the last one.
13 ;; TODO: junk the meta field in favor of something more compact?
14 (define all-grob-descriptions
18 (molecule-callback . ,Local_key_item::brew_molecule)
19 (X-offset-callbacks . (,Side_position_interface::aligned_side))
20 (after-line-breaking-callback . ,Local_key_item::after_line_breaking)
24 (paren-cautionaries . #t)
26 (meta . ,(grob-description accidentals-interface font-interface side-position-interface))
31 (X-extent-callback . ,Arpeggio::width_callback)
32 (Y-extent-callback . #f)
33 (molecule-callback . ,Arpeggio::brew_molecule)
34 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
35 (X-offset-callbacks . (,Side_position_interface::aligned_side))
37 (staff-position . 0.0)
38 (meta . ,(grob-description arpeggio-interface side-position-interface font-interface))
43 (break-align-symbol . staff-bar)
45 (break-glyph-function . ,default-break-barline)
46 (bar-size-procedure . ,Bar_line::get_staff_bar_size)
47 (molecule-callback . ,Bar_line::brew_molecule)
48 (visibility-lambda . ,all-visible)
50 (before-line-breaking-callback . ,Bar_line::before_line_breaking)
52 (time-signature . (extra-space . 0.75))
53 (custos . (minimum-space . 2.0))
54 (clef . (minimum-space . 1.0))
55 (begin-of-note . (extra-space . 1.3))
59 ;; Ross. page 151 lists other values, we opt for a leaner look
63 (hair-thickness . 1.6)
64 (thick-thickness . 6.0)
65 (meta . ,(grob-description bar-line-interface font-interface))
71 (molecule-callback . ,Text_item::brew_molecule)
73 (visibility-lambda . ,begin-of-line-visible)
77 (font-relative-size . -1)
78 (Y-offset-callbacks . (,Side_position_interface::aligned_side))
79 (meta . ,(grob-description
80 side-position-interface
81 text-interface font-interface break-aligned-interface))
86 (molecule-callback . ,brew-bass-figure)
87 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self))
89 (font-family . number)
90 (font-relative-size . -1)
94 (meta . ,(grob-description text-interface font-interface ))
98 ;; todo: clean this up a bit: the list is getting
100 (molecule-callback . ,Beam::brew_molecule)
101 (concaveness-threshold . 0.08)
102 (positions . (#f . #f))
103 (position-callbacks . (,Beam::least_squares
109 (thickness . 0.48) ; in staff-space
110 (before-line-breaking-callback . ,Beam::before_line_breaking)
111 (after-line-breaking-callback . (,Beam::after_line_breaking
112 ,Beam::end_after_line_breaking))
113 ; (quant-score-functions . (
114 ; ,Beam::score_stem_lengths
116 (neutral-direction . -1)
117 (dir-function . ,beam-dir-majority-median)
118 (beamed-stem-shorten . (1.0 0.5))
119 (outer-stem-length-limit . 0.2)
121 (flag-width-function . ,default-beam-flag-width-function)
124 (font-name . "cmr10")
125 (meta . ,(grob-description beam-interface))
133 (meta . ,(grob-description
142 (X-offset-callbacks . (,Break_align_interface::alignment_callback))
144 (meta . ,(grob-description axis-group-interface))
149 (break-align-symbol . breathing-sign)
152 (key-signature . (minimum-space . 1.5))
153 (staff-bar . (minimum-space . 1.5))
154 (clef . (minimum-space . 2.0))
155 (begin-of-note . (minimum-space . 1.0))
157 (molecule-callback . ,Text_item::brew_molecule)
159 (font-family . music)
160 (text . "scripts-rcomma")
161 (Y-offset-callbacks . (,Breathing_sign::offset_callback))
162 (visibility-lambda . ,begin-of-line-invisible)
163 (meta . ,(grob-description break-aligned-interface text-interface font-interface))
168 (molecule-callback . ,Clef::brew_molecule)
169 (before-line-breaking-callback . ,Clef::before_line_breaking)
171 (font-family . music)
172 (break-align-symbol . clef)
173 (visibility-lambda . ,begin-of-line-visible)
175 (staff-bar . (minimum-space . 3.7))
176 (key-signature . (minimum-space . 4.0))
177 (time-signature . (minimum-space . 4.2))
178 (begin-of-note . (minimum-space . 5.0))
180 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
181 (meta . ,(grob-description clef-interface font-interface break-aligned-interface ))
186 (molecule-callback . ,Chord_name::brew_molecule)
187 (after-line-breaking-callback . ,Chord_name::after_line_breaking)
188 (chord-name-function . ,default-chord-name-function)
189 (font-family . roman)
190 (meta . ,(grob-description font-interface text-interface chord-name-interface))
195 (break-align-symbol . custos)
197 (molecule-callback . ,Custos::brew_molecule)
198 (visibility-lambda . ,end-of-line-visible)
200 (neutral-position . 0)
201 (neutral-direction . -1)
202 (adjust-if-on-staffline . #t)
203 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
204 (font-family . music)
206 (begin-of-note . (minimum-space . 0.0))
208 (meta . ,(grob-description custos-interface staff-symbol-referencer-interface break-aligned-interface) )
216 (X-extent-callback . ,Axis_group_interface::group_extent_callback)
218 (X-offset-callbacks . (,Dot_column::side_position))
219 (meta . ,(grob-description dot-column-interface axis-group-interface))
224 (molecule-callback . ,Dots::brew_molecule)
226 (staff-position . 0.0)
227 (Y-offset-callbacks . (,Dots::quantised_position_callback ,Staff_symbol_referencer::callback))
228 (meta . ,(grob-description font-interface dots-interface ))
231 (DoublePercentRepeat .
233 (molecule-callback . ,Percent_repeat_item_interface::double_percent)
236 (font-family . music)
239 (break-align-symbol . staff-bar)
240 (visibility-lambda . ,begin-of-line-invisible)
241 (meta . ,(grob-description font-interface percent-repeat-interface))
246 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self))
247 (molecule-callback . ,Text_item::brew_molecule)
248 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
249 (self-alignment-X . 0)
251 (no-spacing-rods . #t)
252 (script-priority . 100)
254 (font-family . dynamic)
255 (font-shape . italic)
256 (self-alignment-Y . 0)
257 (meta . ,(grob-description font-interface text-interface dynamic-interface))
264 (minimum-space . 1.2)
266 (meta . ,(grob-description dynamic-interface axis-group-interface side-position-interface))
271 (break-align-symbol . left-edge)
272 (X-offset-callbacks . (,Break_align_interface::alignment_callback))
273 (X-extent-callback . ,Grob::point_dimension_callback)
276 (time-signature . (extra-space . 0.0))
277 (staff-bar . (extra-space . 0.0))
278 (breathing-sign . (minimum-space . 0.0))
279 (clef . (extra-space . 1.0))
280 (begin-of-note . (extra-space . 0.0))
281 (key-signature . (extra-space . 0.0))
283 (meta . ,(grob-description break-aligned-interface))
288 (molecule-callback . ,Text_item::brew_molecule)
289 (X-offset-callbacks . (,Side_position_interface::centered_on_parent
290 ,Side_position_interface::aligned_on_self))
293 (self-alignment-X . 0)
294 (self-alignment-Y . 0)
295 (font-family . number)
296 (font-relative-size . -3)
297 (font-shape . upright)
298 (meta . ,(grob-description finger-interface font-interface
299 text-script-interface text-interface side-position-interface))
303 (HaraKiriVerticalGroup
305 (Y-offset-callbacks . (,Hara_kiri_group_spanner::force_hara_kiri_callback))
306 (Y-extent-callback . ,Hara_kiri_group_spanner::y_extent)
308 (meta . ,(grob-description axis-group-interface hara-kiri-group-interface))
313 (molecule-callback . ,Hairpin::brew_molecule)
316 (spacing-procedure . ,Spanner::set_spacing_rods)
317 (minimum-length . 2.0)
318 (if-text-padding . 1.0)
319 (width-correct . -1.0)
321 (dash-thickness . 1.2)
323 (self-alignment-Y . 0)
324 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self))
325 (meta . ,(grob-description hairpin-interface dynamic-interface))
331 (Y-offset-callbacks . (,Side_position_interface::aligned_on_self
332 ,Side_position_interface::aligned_on_support_refpoints))
333 ;; huh? what's this for?
336 (left-edge . (extra-space . 1.0))
339 (self-alignment-Y . 0)
340 (molecule-callback . ,Text_item::brew_molecule)
341 (break-align-symbol . instrument-name)
342 (visibility-lambda . ,begin-of-line-visible)
344 (font-family . roman)
345 (meta . ,(grob-description font-interface text-interface break-aligned-interface))
350 (molecule-callback . ,Key_signature_interface::brew_molecule)
352 (time-signature . (extra-space . 1.25))
353 (staff-bar . (extra-space . 1.1))
354 (begin-of-note . (extra-space . 2.5))
356 (break-align-symbol . key-signature)
357 (visibility-lambda . ,begin-of-line-visible)
359 (meta . ,(grob-description key-signature-interface font-interface break-aligned-interface))
367 (minimum-length . 0.5)
368 (maximum-length . 100)
369 (molecule-callback . ,Hyphen_spanner::brew_molecule)
370 (Y-extent-callback . ,Grob::point_dimension_callback)
371 (meta . ,(grob-description lyric-hyphen-interface ))
376 (molecule-callback . ,Lyric_extender::brew_molecule)
377 (height . 0.8) ; stafflinethickness;
378 (right-trim-amount . 0.5)
379 (Y-extent-callback . ,Grob::point_dimension_callback)
380 (meta . ,(grob-description lyric-extender-interface))
385 (molecule-callback . ,Text_item::brew_molecule)
386 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
387 (self-alignment-X . 0)
390 (ignore-length-mismatch . #f)
391 (begin-alignment . 4)
393 (font-family . roman)
394 (font-shape . upright)
395 (meta . ,(grob-description lyric-syllable-interface text-interface font-interface ))
401 (auto-properties . #f)
403 (porrectus-width . 2.4)
404 (line-thickness . 1.0)
407 (molecule-callback . ,Porrectus::brew_molecule)
408 (meta . ,(grob-description porrectus-interface))
413 (molecule-callback . ,Text_item::brew_molecule)
414 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
415 (self-alignment-X . 0)
419 (font-family . roman)
420 (font-shape . upright)
421 (font-relative-size . 1)
422 (visibility-lambda . ,end-of-line-invisible)
424 (meta . ,(grob-description mark-interface side-position-interface))
429 (spacing-procedure . ,Multi_measure_rest::set_spacing_rods)
430 (molecule-callback . ,Multi_measure_rest::brew_molecule)
431 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
434 (padding . 2.0) ; staffspace
435 (minimum-width . 12.5) ; staffspace
436 (font-family . number)
437 (font-relative-size . 1)
438 (meta . ,(grob-description multi-measure-rest-interface rest-interface font-interface ))
444 ;; Ugh, should not be hard-coded.
446 (meta . ,(grob-description
447 note-collision-interface axis-group-interface
454 (meta . ,(grob-description axis-group-interface note-column-interface))
460 (molecule-callback . ,Note_head::brew_molecule)
461 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
462 (stem-attachment-function . ,note-head-style->attachment-coordinates)
463 (meta . ,(grob-description rhythmic-head-interface font-interface note-head-interface))
471 (X-extent-callback . #f)
472 (Y-extent-callback . #f)
473 (molecule-callback . ,Line_spanner::brew_molecule)
474 (meta . ,(grob-description line-spanner-interface))
482 (X-extent-callback . #f)
483 (Y-extent-callback . #f)
484 (molecule-callback . ,Line_spanner::brew_molecule)
485 (meta . ,(grob-description line-spanner-interface))
490 (molecule-callback . ,Text_item::brew_molecule)
491 (font-family . roman)
492 (meta . ,(grob-description note-name-interface font-interface))
497 (self-alignment-X . 0)
499 (visibility-lambda . ,begin-of-line-visible)
500 (X-offset-callbacks . (,Side_position_interface::centered_on_parent ,Side_position_interface::aligned_on_self))
501 (Y-offset-callbacks . (,Side_position_interface::aligned_side))
502 (molecule-callback . ,Text_item::brew_molecule)
503 (font-shape . italic)
504 (font-family . roman)
505 (meta . ,(grob-description text-interface font-interface ))
511 ; (molecule-callback . ,Paper_column::brew_molecule) (font-name . "cmr8")
512 (meta . ,(grob-description paper-column-interface axis-group-interface spaceable-element-interface))
517 (molecule-callback . ,Slur::brew_molecule)
519 (spacing-procedure . ,Spanner::set_spacing_rods)
520 (minimum-length . 1.5)
521 (after-line-breaking-callback . ,Slur::after_line_breaking)
522 (extremity-rules . ,default-slur-extremity-rules)
523 (extremity-offset-alist . ,default-phrasing-slur-extremity-offset-alist)
524 (de-uglify-parameters . ( 1.5 0.8 -2.0))
525 (Y-extent-callback . ,Slur::height)
526 (details . ((height-limit . 2.0) (ratio . 0.333) (force-blowfit . 0.5)
527 (bezier-pct-c0 . -0.2) (bezier-pct-c3 . 0.000006)
528 (bezier-pct-out-max . 0.8) (bezier-pct-in-max . 1.2)
529 (bezier-area-steps . 1.0)))
532 (attachment . (#f . #f))
533 (attachment-offset . ((0 . 0) . (0 . 0)))
535 (meta . ,(grob-description slur-interface))
538 (NonMusicalPaperColumn
541 ; (molecule-callback . ,Paper_column::brew_molecule) (font-name . "cmr8")
542 (meta . ,(grob-description paper-column-interface
543 axis-group-interface spaceable-element-interface))
548 (spacing-procedure . ,Multi_measure_rest::set_spacing_rods)
549 (molecule-callback . ,Multi_measure_rest::percent)
552 (minimum-width . 12.5) ; staffspace
553 (font-family . music)
554 (meta . ,(grob-description multi-measure-rest-interface font-interface percent-repeat-interface))
557 (PianoPedalBracket ;; an example of a text spanner
559 (molecule-callback . ,Text_spanner::brew_molecule)
560 (font-family . roman)
562 (if-text-padding . 1.0)
566 (edge-width . (0.5 . 0.5))
567 (edge-height . (1.0 . 1.0))
568 (shorten-pair . (0.0 . 0.0))
570 (meta . ,(grob-description piano-pedal-interface))
575 (molecule-callback . , Percent_repeat_item_interface::beat_slash)
578 (meta . ,(grob-description percent-repeat-interface))
582 (after-line-breaking-callback . ,Rest::after_line_breaking)
583 (X-extent-callback . ,Rest::extent_callback)
584 (Y-extent-callback . ,Rest::extent_callback)
585 (molecule-callback . ,Rest::brew_molecule)
586 (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
587 (minimum-beam-collision-distance . 1.5)
588 (meta . ,(grob-description
589 rhythmic-head-interface
590 staff-symbol-referencer-interface
596 (minimum-distance . 0.75)
597 (meta . ,(grob-description rest-collision-interface ))
602 ;; don't set direction here: it breaks staccato.
603 (molecule-callback . ,Script::brew_molecule)
605 (X-offset-callbacks . (,Side_position_interface::centered_on_parent))
606 (before-line-breaking-callback . ,Script::before_line_breaking)
607 (font-family . music)
608 (meta . ,(grob-description script-interface side-position-interface font-interface))
613 (before-line-breaking-callback . ,Script_column::before_line_breaking)
614 (meta . ,(grob-description script-column-interface))
619 (molecule-callback . ,Slur::brew_molecule)
621 (spacing-procedure . ,Spanner::set_spacing_rods)
622 (minimum-length . 1.5)
623 (after-line-breaking-callback . ,Slur::after_line_breaking)
624 (extremity-rules . ,default-slur-extremity-rules)
625 (extremity-offset-alist . ,default-slur-extremity-offset-alist)
626 (de-uglify-parameters . ( 1.5 0.8 -2.0))
627 (Y-extent-callback . ,Slur::height)
628 (details . ((height-limit . 2.0) (ratio . 0.333) (force-blowfit . 0.5)
629 (bezier-pct-c0 . -0.2) (bezier-pct-c3 . 0.000006)
630 (bezier-pct-out-max . 0.8) (bezier-pct-in-max . 1.2)
631 (bezier-area-steps . 1.0)))
634 (attachment . (#f . #f))
635 (attachment-offset . ((0 . 0) . (0 . 0)))
637 (meta . ,(grob-description slur-interface))
642 (spacing-procedure . ,Spacing_spanner::set_springs)
643 (grace-space-factor . 0.8)
645 (shortest-duration-space . 2.0)
646 (spacing-increment . 1.2)
648 (X-extent-callback . #f)
649 (Y-extent-callback . #f)
652 (meta . ,(grob-description spacing-spanner-interface))
657 (break-align-symbol . staff-bar)
658 (bar-size-procedure . ,Span_bar::get_bar_size)
659 (molecule-callback . ,Span_bar::brew_molecule)
660 (visibility-lambda . ,begin-of-line-invisible)
661 (X-extent-callback . ,Span_bar::width_callback)
664 (before-line-breaking-callback . ,Span_bar::before_line_breaking)
668 ;; Ross. page 151 lists other values, we opt for a leaner look
672 (hair-thickness . 1.6)
673 (thick-thickness . 6.0)
674 (meta . ,(grob-description span-bar-interface bar-line-interface ))
680 (molecule-callback . ,Text_item::brew_molecule)
681 (break-align-symbol . clef)
682 (visibility-lambda . ,begin-of-line-visible)
683 (font-family . roman)
684 (meta . ,(grob-description break-aligned-interface text-interface font-interface))
690 (X-extent-callback . #f)
691 (stem-spacing-correction . 0.4)
692 (Y-extent-callback . #f)
693 (meta . ,(grob-description staff-spacing-interface))
697 (X-extent-callback . #f)
698 (Y-extent-callback . #f)
699 (stem-spacing-correction . 0.5)
701 (meta . ,(grob-description note-spacing-interface))
706 (molecule-callback . ,Staff_symbol::brew_molecule)
710 (meta . ,(grob-description staff-symbol-interface ))
715 (molecule-callback . ,Text_item::brew_molecule)
717 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
718 (no-spacing-rods . #t)
719 (padding . 0.0) ;; padding relative to SostenutoPedalLineSpanner
721 (font-family . roman)
722 (font-shape . italic)
723 (self-alignment-X . 0)
724 (meta . ,(grob-description text-interface font-interface))
727 (SostenutoPedalLineSpanner
731 (minimum-space . 1.0)
733 (meta . ,(grob-description piano-pedal-interface axis-group-interface side-position-interface))
738 (before-line-breaking-callback . ,Stem::before_line_breaking)
739 (molecule-callback . ,Stem::brew_molecule)
741 (beamed-lengths . (0.0 2.5 2.0 1.5))
742 (beamed-minimum-lengths . (0.0 1.5 1.25 1.0))
744 ;; Stems in unnatural (forced) direction should be shortened,
745 ;; according to [Roush & Gourlay]. Their suggestion to knock off
746 ;; a whole staffspace seems a bit drastical: we'll do half.
748 (lengths . (3.5 3.5 3.5 4.5 5.0))
749 (stem-shorten . (1.0 0.5))
750 ; if stem is on middle line, choose this direction.
751 (neutral-direction . -1)
752 (X-offset-callbacks . (,Stem::off_callback))
753 (X-extent-callback . ,Stem::dim_callback)
754 (Y-extent-callback . ,Stem::height)
755 (adjust-if-on-staffline . #t)
756 (font-family . music)
757 (meta . ,(grob-description stem-interface font-interface))
762 (molecule-callback . ,Stem_tremolo::brew_molecule)
763 (Y-extent-callback . ,Stem_tremolo::height)
764 (X-extent-callback . #f)
766 (beam-width . 2.0) ; staff-space
767 (beam-thickness . 0.48) ; staff-space
768 (meta . ,(grob-description stem-tremolo-interface ))
773 (meta . ,(grob-description separation-item-interface ))
776 (SeparatingGroupSpanner
778 (spacing-procedure . ,Separating_group_spanner::set_spacing_rods)
779 (meta . ,(grob-description separation-spanner-interface))
784 (no-spacing-rods . #t)
785 (molecule-callback . ,Sustain_pedal::brew_molecule)
786 (self-alignment-X . 0)
788 (padding . 0.0) ;; padding relative to SustainPedalLineSpanner
790 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
791 (meta . ,(grob-description piano-pedal-interface side-position-interface font-interface))
794 (SustainPedalLineSpanner
798 (minimum-space . 1.0)
800 (meta . ,(grob-description piano-pedal-interface axis-group-interface side-position-interface))
806 (meta . ,(grob-description line-of-score-interface axis-group-interface))
812 (molecule-callback . ,System_start_delimiter::brew_molecule)
813 (collapse-height . 5.0)
814 (font-family . braces)
815 (Y-extent-callback . #f)
816 (meta . ,(grob-description system-start-delimiter-interface font-interface))
821 (Y-extent-callback . #f)
822 (molecule-callback . ,System_start_delimiter::brew_molecule)
828 (bracket-collapse-height . 1)
830 (meta . ,(grob-description system-start-delimiter-interface ))
835 (Y-extent-callback . #f)
836 (molecule-callback . ,System_start_delimiter::brew_molecule)
839 (after-line-breaking-callback . ,System_start_delimiter::after_line_breaking)
840 (meta . ,(grob-description system-start-delimiter-interface ))
845 (molecule-callback . ,Text_item::brew_molecule)
846 (no-spacing-rods . #t)
849 ;; todo: add X self alignment?
851 (font-family . roman)
852 (meta . ,(grob-description text-script-interface text-interface side-position-interface font-interface ))
857 (molecule-callback . ,Text_spanner::brew_molecule)
858 (font-family . roman)
861 ;; urg, only for (de)cresc. text spanners
862 (if-text-padding . 1.0)
866 (meta . ,(grob-description text-spanner-interface font-interface))
871 (molecule-callback . ,Tie::brew_molecule)
872 (spacing-procedure . ,Spanner::set_spacing_rods)
873 (staffline-clearance . 0.35)
874 (details . ((ratio . 0.333) (height-limit . 1.0)))
878 (minimum-length . 2.5)
879 (meta . ,(grob-description tie-interface ))
884 (after-line-breaking-callback . ,Tie_column::after_line_breaking)
885 (meta . ,(grob-description tie-column-interface ))
890 (molecule-callback . ,Time_signature::brew_molecule)
891 (break-align-symbol . time-signature)
892 (visibility-lambda . ,all-visible)
894 (begin-of-note . (extra-space . 2.0))
895 (staff-bar . (minimum-space . 2.0))
899 (font-family . number)
900 (meta . ,(grob-description time-signature-interface font-interface))
907 (after-line-breaking-callback . ,Tuplet_bracket::after_line_breaking)
908 (molecule-callback . ,Tuplet_bracket::brew_molecule)
909 (font-family . roman)
910 (font-shape . italic)
911 (font-relative-size . -1)
912 (meta . ,(grob-description text-interface
913 tuplet-bracket-interface font-interface))
918 (molecule-callback . ,Text_item::brew_molecule)
919 (font-family . roman)
920 (font-shape . italic)
921 (no-spacing-rods . #t)
922 (self-alignment-X . 0)
925 (padding . 0.0) ;; padding relative to UnaCordaPedalLineSpanner
926 (X-offset-callbacks . (,Side_position_interface::aligned_on_self))
927 (meta . ,(grob-description text-interface font-interface))
930 (UnaCordaPedalLineSpanner
934 (minimum-space . 1.0)
936 (meta . ,(grob-description piano-pedal-interface axis-group-interface side-position-interface))
941 (molecule-callback . ,Volta_spanner::brew_molecule)
945 (Y-offset-callbacks . (,Side_position_interface::aligned_side))
946 (thickness . 1.6) ; stafflinethickness
947 (height . 2.0) ; staffspace;
949 (font-family . number)
950 (font-relative-size . -2)
951 (meta . ,(grob-description volta-bracket-interface side-position-interface font-interface))
957 (Y-extent-callback . ,Axis_group_interface::group_extent_callback)
958 (X-extent-callback . #f)
960 (meta . ,(grob-description align-interface axis-group-interface))
966 (meta . ,(grob-description axis-group-interface))
974 (define (completize-grob-entry x)
975 "transplant assoc key into 'name entry of 'meta of X
977 (let* ((name-sym (car x))
979 (metaentry (cdr (assoc 'meta entry)))
980 (new-metaentry (assoc-set! metaentry 'name name-sym))
983 (cons name-sym (assoc-set! entry 'meta new-metaentry))
986 (set! all-grob-descriptions (map completize-grob-entry all-grob-descriptions))
990 ; (display (map pair? all-grob-descriptions))
993 ;; make sure that \property Foo.Bar =\turnOff doesn't complain
996 ; (display (car x)) (newline)
998 (set-object-property! (car x) 'translation-type? list?))
999 all-grob-descriptions)