1 ;;;; This file is part of LilyPond, the GNU music typesetter.
3 ;;;; Copyright (C) 1998--2010 Jan Nieuwenhuizen <janneke@gnu.org>
4 ;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
6 ;;;; LilyPond is free software: you can redistribute it and/or modify
7 ;;;; it under the terms of the GNU General Public License as published by
8 ;;;; the Free Software Foundation, either version 3 of the License, or
9 ;;;; (at your option) any later version.
11 ;;;; LilyPond is distributed in the hope that it will be useful,
12 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;;; GNU General Public License for more details.
16 ;;;; You should have received a copy of the GNU General Public License
17 ;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
23 (define-public (grob::has-interface grob iface)
24 (memq iface (ly:grob-interfaces grob)))
26 (define-public (grob::is-live? grob)
27 (pair? (ly:grob-basic-properties grob)))
29 (define-public (make-stencil-boxer thickness padding callback)
31 "Return function that adds a box around the grob passed as argument."
33 (box-stencil (callback grob) thickness padding)))
35 (define-public (make-stencil-circler thickness padding callback)
36 "Return function that adds a circle around the grob passed as argument."
38 (lambda (grob) (circle-stencil (callback grob) thickness padding)))
40 (define-public (print-circled-text-callback grob)
41 (grob-interpret-markup grob (make-circle-markup
42 (ly:grob-property grob 'text))))
44 (define-public (event-cause grob)
45 (let ((cause (ly:grob-property grob 'cause)))
48 ((ly:stream-event? cause) cause)
49 ((ly:grob? cause) (event-cause cause))
52 (define-public (grob-interpret-markup grob text)
53 (let* ((layout (ly:grob-layout grob))
54 (defs (ly:output-def-lookup layout 'text-font-defaults))
55 (props (ly:grob-alist-chain grob defs)))
57 (ly:text-interface::interpret-markup layout props text)))
60 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
63 (define-public (stem::calc-duration-log grob)
65 (ly:event-property (event-cause grob) 'duration)))
67 (define-public (note-head::calc-duration-log grob)
70 (ly:event-property (event-cause grob) 'duration))))
72 (define-public (dots::calc-dot-count grob)
73 (ly:duration-dot-count
74 (ly:event-property (event-cause grob) 'duration)))
76 (define-public (dots::calc-staff-position grob)
77 (let* ((head (ly:grob-parent grob Y))
78 (log (ly:grob-property head 'duration-log)))
81 ((or (not (grob::has-interface head 'rest-interface))
82 (not (integer? log))) 0)
90 ;; Kept separate from note-head::calc-glyph-name to allow use by
91 ;; markup commands \note and \note-by-number
92 (define-public (select-head-glyph style log)
93 "Select a note head glyph string based on note head style @var{style}
94 and duration-log @var{log}."
96 ;; "default" style is directly handled in note-head.cc as a
97 ;; special case (HW says, mainly for performance reasons).
98 ;; Therefore, style "default" does not appear in this case
100 ((xcircle) "2xcircle")
101 ((harmonic) "0harmonic")
102 ((harmonic-black) "2harmonic")
103 ((harmonic-mixed) (if (<= log 1) "0harmonic"
106 ;; Oops, I actually would not call this "baroque", but, for
107 ;; backwards compatibility to 1.4, this is supposed to take
108 ;; brevis, longa and maxima from the neo-mensural font and all
109 ;; other note heads from the default font. -- jr
111 (string-append (number->string log) "neomensural")
112 (number->string log)))
114 ;; Like default, but brevis is drawn with double vertical lines
116 (string-append (number->string log) "double")
117 (number->string log)))
119 (string-append (number->string log) (symbol->string style)))
122 (string-append (number->string log) "mensural")
123 (string-append (number->string log) (symbol->string style))))
125 (string-append (number->string log) (symbol->string style)))
127 (if (string-match "vaticana*|hufnagel*|medicaea*" (symbol->string style))
128 (symbol->string style)
129 (string-append (number->string (max 0 log))
130 (symbol->string style))))))
132 (define-public (note-head::calc-glyph-name grob)
133 (let ((style (ly:grob-property grob 'style))
134 (log (min 2 (ly:grob-property grob 'duration-log))))
136 (select-head-glyph style log)))
138 (define-public (note-head::brew-ez-stencil grob)
139 (let* ((log (ly:grob-property grob 'duration-log))
140 (pitch (ly:event-property (event-cause grob) 'pitch))
141 (pitch-index (ly:pitch-notename pitch))
142 (note-names (ly:grob-property grob 'note-names))
143 (pitch-string (if (and (vector? note-names)
144 (> (vector-length note-names) pitch-index))
145 (vector-ref note-names pitch-index)
148 (+ (modulo (+ pitch-index 2) 7)
149 (char->integer #\A))))))
150 (staff-space (ly:staff-symbol-staff-space grob))
151 (line-thickness (ly:staff-symbol-line-thickness grob))
152 (stem (ly:grob-object grob 'stem))
153 (stem-thickness (* (if (ly:grob? stem)
154 (ly:grob-property stem 'thickness)
157 (radius (/ (+ staff-space line-thickness) 2))
158 (letter (markup #:center-align #:vcenter pitch-string))
159 (filled-circle (markup #:draw-circle radius 0 #t)))
161 (ly:stencil-translate-axis
162 (grob-interpret-markup
167 (make-with-color-markup white letter))
171 (make-with-color-markup white (make-draw-circle-markup
172 (- radius stem-thickness) 0 #t)))
177 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
180 (define-public all-visible #(#t #t #t))
181 (define-public begin-of-line-invisible #(#t #t #f))
182 (define-public center-invisible #(#t #f #t))
183 (define-public end-of-line-invisible #(#f #t #t))
184 (define-public begin-of-line-visible #(#f #f #t))
185 (define-public center-visible #(#f #t #f))
186 (define-public end-of-line-visible #(#t #f #f))
187 (define-public all-invisible #(#f #f #f))
189 (define-public spanbar-begin-of-line-invisible #(#t #f #f))
192 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
196 ;; How should a bar line behave at a break?
197 (define bar-glyph-alist
198 '((":|:" . (":|" . "|:"))
199 (":|.|:" . (":|" . "|:"))
200 (":|.:" . (":|" . "|:"))
201 ("||:" . ("||" . "|:"))
202 ("dashed" . ("dashed" . '()))
204 ("||:" . ("||" . "|:"))
206 ("|:" . ("|" . "|:"))
209 ;; hmm... should we end with a bar line here?
210 (".|" . ("|" . ".|"))
213 (".|." . (".|." . ()))
214 ("|.|" . ("|.|" . ()))
219 ("empty" . (() . ()))
220 ("brace" . (() . "brace"))
221 ("bracket" . (() . "bracket"))))
223 (define-public (bar-line::calc-glyph-name grob)
224 (let* ((glyph (ly:grob-property grob 'glyph))
225 (dir (ly:item-break-dir grob))
226 (result (assoc-get glyph bar-glyph-alist))
227 (glyph-name (if (= dir CENTER)
230 (string? (index-cell result dir)))
231 (index-cell result dir)
235 (define-public (bar-line::calc-break-visibility grob)
236 (let* ((glyph (ly:grob-property grob 'glyph))
237 (result (assoc-get glyph bar-glyph-alist)))
240 (vector (string? (car result)) #t (string? (cdr result)))
243 (define-public (shift-right-at-line-begin g)
244 "Shift an item to the right, but only at the start of the line."
245 (if (and (ly:item? g)
246 (equal? (ly:item-break-dir g) RIGHT))
247 (ly:grob-translate-axis! g 3.5 X)))
250 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
253 (define-public (tuplet-number::calc-denominator-text grob)
254 (number->string (ly:event-property (event-cause grob) 'denominator)))
256 (define-public (tuplet-number::calc-fraction-text grob)
257 (let ((ev (event-cause grob)))
260 (ly:event-property ev 'denominator)
261 (ly:event-property ev 'numerator))))
263 ;; a formatter function, which is simply a wrapper around an existing
264 ;; tuplet formatter function. It takes the value returned by the given
265 ;; function and appends a note of given length.
266 (define-public ((tuplet-number::append-note-wrapper function note) grob)
267 (let ((txt (if function (function grob) #f)))
270 (markup txt #:fontsize -5 #:note note UP)
271 (markup #:fontsize -5 #:note note UP))))
273 ;; Print a tuplet denominator with a different number than the one derived from
274 ;; the actual tuplet fraction
275 (define-public ((tuplet-number::non-default-tuplet-denominator-text denominator)
277 (number->string (if denominator
279 (ly:event-property (event-cause grob) 'denominator))))
281 ;; Print a tuplet fraction with different numbers than the ones derived from
282 ;; the actual tuplet fraction
283 (define-public ((tuplet-number::non-default-tuplet-fraction-text
284 denominator numerator) grob)
285 (let* ((ev (event-cause grob))
286 (den (if denominator denominator (ly:event-property ev 'denominator)))
287 (num (if numerator numerator (ly:event-property ev 'numerator))))
289 (format "~a:~a" den num)))
291 ;; Print a tuplet fraction with note durations appended to the numerator and the
293 (define-public ((tuplet-number::fraction-with-notes
294 denominatornote numeratornote) grob)
295 (let* ((ev (event-cause grob))
296 (denominator (ly:event-property ev 'denominator))
297 (numerator (ly:event-property ev 'numerator)))
299 ((tuplet-number::non-default-fraction-with-notes
300 denominator denominatornote numerator numeratornote) grob)))
302 ;; Print a tuplet fraction with note durations appended to the numerator and the
304 (define-public ((tuplet-number::non-default-fraction-with-notes
305 denominator denominatornote numerator numeratornote) grob)
306 (let* ((ev (event-cause grob))
307 (den (if denominator denominator (ly:event-property ev 'denominator)))
308 (num (if numerator numerator (ly:event-property ev 'numerator))))
310 (make-concat-markup (list
311 (make-simple-markup (format "~a" den))
312 (markup #:fontsize -5 #:note denominatornote UP)
313 (make-simple-markup " : ")
314 (make-simple-markup (format "~a" num))
315 (markup #:fontsize -5 #:note numeratornote UP)))))
318 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
321 (define-public color? list?)
322 (define-public (rgb-color r g b) (list r g b))
325 (define-public black '(0.0 0.0 0.0))
326 (define-public white '(1.0 1.0 1.0))
327 (define-public red '(1.0 0.0 0.0))
328 (define-public green '(0.0 1.0 0.0))
329 (define-public blue '(0.0 0.0 1.0))
330 (define-public cyan '(0.0 1.0 1.0))
331 (define-public magenta '(1.0 0.0 1.0))
332 (define-public yellow '(1.0 1.0 0.0))
334 (define-public grey '(0.5 0.5 0.5))
335 (define-public darkred '(0.5 0.0 0.0))
336 (define-public darkgreen '(0.0 0.5 0.0))
337 (define-public darkblue '(0.0 0.0 0.5))
338 (define-public darkcyan '(0.0 0.5 0.5))
339 (define-public darkmagenta '(0.5 0.0 0.5))
340 (define-public darkyellow '(0.5 0.5 0.0))
343 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
346 (define-public (key-signature-interface::alteration-position step alter
348 ;; TODO: memoize - this is mostly constant.
350 ;; fes, ges, as and bes typeset in lower octave
351 (define FLAT_TOP_PITCH 2)
353 ;; ais and bis typeset in lower octave
354 (define SHARP_TOP_PITCH 4)
357 (+ (cdr step) (* (car step) 7) c0-position)
358 (let* ((from-bottom-pos (modulo (+ 4 49 c0-position) 7))
360 (c0 (- from-bottom-pos 4)))
364 (or (> p FLAT_TOP_PITCH) (> (+ p c0) 4)) (> (+ p c0) 1))
366 (or (> p SHARP_TOP_PITCH) (> (+ p c0) 5)) (> (+ p c0) 2)))
368 ;; Typeset below c_position
371 ;; Provide for the four cases in which there's a glitch
372 ;; it's a hack, but probably not worth
373 ;; the effort of finding a nicer solution.
376 ((and (= c0 2) (= p 3) (> alter 0))
378 ((and (= c0 -3) (= p -1) (> alter 0))
380 ((and (= c0 -4) (= p -1) (< alter 0))
382 ((and (= c0 -2) (= p -3) (< alter 0))
388 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
391 (define-public (accidental-interface::calc-alteration grob)
392 (ly:pitch-alteration (ly:event-property (event-cause grob) 'pitch)))
394 (define-public cancellation-glyph-name-alist
395 '((0 . "accidentals.natural")))
397 (define-public standard-alteration-glyph-name-alist
399 ;; ordered for optimal performance.
400 (0 . "accidentals.natural")
401 (-1/2 . "accidentals.flat")
402 (1/2 . "accidentals.sharp")
404 (1 . "accidentals.doublesharp")
405 (-1 . "accidentals.flatflat")
407 (3/4 . "accidentals.sharp.slashslash.stemstemstem")
408 (1/4 . "accidentals.sharp.slashslash.stem")
409 (-1/4 . "accidentals.mirroredflat")
410 (-3/4 . "accidentals.mirroredflat.flat")))
412 ;; FIXME: standard vs default, alteration-FOO vs FOO-alteration
413 (define-public alteration-default-glyph-name-alist
414 standard-alteration-glyph-name-alist)
416 (define-public makam-alteration-glyph-name-alist
417 '((1 . "accidentals.doublesharp")
418 (8/9 . "accidentals.sharp.slashslashslash.stemstem")
419 (5/9 . "accidentals.sharp.slashslashslash.stem")
420 (4/9 . "accidentals.sharp")
421 (1/9 . "accidentals.sharp.slashslash.stem")
422 (0 . "accidentals.natural")
423 (-1/9 . "accidentals.mirroredflat")
424 (-4/9 . "accidentals.flat.slash")
425 (-5/9 . "accidentals.flat")
426 (-8/9 . "accidentals.flat.slashslash")
427 (-1 . "accidentals.flatflat")))
429 (define-public alteration-hufnagel-glyph-name-alist
430 '((-1/2 . "accidentals.hufnagelM1")
431 (0 . "accidentals.vaticana0")
432 (1/2 . "accidentals.mensural1")))
434 (define-public alteration-medicaea-glyph-name-alist
435 '((-1/2 . "accidentals.medicaeaM1")
436 (0 . "accidentals.vaticana0")
437 (1/2 . "accidentals.mensural1")))
439 (define-public alteration-vaticana-glyph-name-alist
440 '((-1/2 . "accidentals.vaticanaM1")
441 (0 . "accidentals.vaticana0")
442 (1/2 . "accidentals.mensural1")))
444 (define-public alteration-mensural-glyph-name-alist
445 '((-1/2 . "accidentals.mensuralM1")
446 (0 . "accidentals.vaticana0")
447 (1/2 . "accidentals.mensural1")))
450 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
451 ;; * Pitch Trill Heads
454 (define-public (parentheses-item::calc-parenthesis-stencils grob)
455 (let* ((font (ly:grob-default-font grob))
456 (lp (ly:font-get-glyph font "accidentals.leftparen"))
457 (rp (ly:font-get-glyph font "accidentals.rightparen")))
461 (define-public (parentheses-item::calc-angled-bracket-stencils grob)
462 (let* ((parent (ly:grob-parent grob Y))
463 (y-extent (ly:grob-extent parent parent Y))
464 (half-thickness 0.05) ; should it be a property?
465 (width 0.5) ; should it be a property?
466 (angularity 1.5) ; makes angle brackets
467 (white-padding 0.1) ; should it be a property?
468 (lp (ly:stencil-aligned-to
469 (ly:stencil-aligned-to
470 (make-parenthesis-stencil y-extent
477 (interval-widen (ly:stencil-extent lp X) white-padding))
478 (rp (ly:stencil-aligned-to
479 (ly:stencil-aligned-to
480 (make-parenthesis-stencil y-extent
487 (interval-widen (ly:stencil-extent rp X) white-padding)))
488 (set! lp (ly:make-stencil (ly:stencil-expr lp)
490 (ly:stencil-extent lp Y)))
491 (set! rp (ly:make-stencil (ly:stencil-expr rp)
493 (ly:stencil-extent rp Y)))
494 (list (stencil-whiteout lp)
495 (stencil-whiteout rp))))
497 (define (parenthesize-elements grob . rest)
498 (let* ((refp (if (null? rest)
501 (elts (ly:grob-object grob 'elements))
502 (x-ext (ly:relative-group-extent elts refp X))
503 (stencils (ly:grob-property grob 'stencils))
506 (padding (ly:grob-property grob 'padding 0.1)))
509 (ly:stencil-translate-axis lp (- (car x-ext) padding) X)
510 (ly:stencil-translate-axis rp (+ (cdr x-ext) padding) X))))
513 (define (parentheses-item::print me)
514 (let* ((elts (ly:grob-object me 'elements))
515 (y-ref (ly:grob-common-refpoint-of-array me elts Y))
516 (x-ref (ly:grob-common-refpoint-of-array me elts X))
517 (stencil (parenthesize-elements me x-ref))
518 (elt-y-ext (ly:relative-group-extent elts y-ref Y))
519 (y-center (interval-center elt-y-ext)))
521 (ly:stencil-translate
524 (- (ly:grob-relative-coordinate me x-ref X))
525 (- y-center (ly:grob-relative-coordinate me y-ref Y))))))
529 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
532 (define-public (chain-grob-member-functions grob value . funcs)
535 (set! value (func grob value)))
541 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
544 (define-public (bend::print spanner)
546 (< (abs (- a b)) 0.01))
548 (let* ((delta-y (* 0.5 (ly:grob-property spanner 'delta-position)))
549 (left-span (ly:spanner-bound spanner LEFT))
550 (dots (if (and (grob::has-interface left-span 'note-head-interface)
551 (ly:grob? (ly:grob-object left-span 'dot)))
552 (ly:grob-object left-span 'dot) #f))
554 (right-span (ly:spanner-bound spanner RIGHT))
555 (thickness (* (ly:grob-property spanner 'thickness)
556 (ly:output-def-lookup (ly:grob-layout spanner)
558 (padding (ly:grob-property spanner 'padding 0.5))
559 (common (ly:grob-common-refpoint right-span
560 (ly:grob-common-refpoint spanner
563 (common-y (ly:grob-common-refpoint spanner left-span Y))
564 (minimum-length (ly:grob-property spanner 'minimum-length 0.5))
568 (interval-end (ly:grob-robust-relative-extent
573 (ly:grob-relative-coordinate dots common-y Y)
574 (ly:grob-relative-coordinate spanner common-y Y)))
576 (ly:grob-robust-relative-extent dots common X))
577 ;; TODO: use real infinity constant.
579 (right-x (max (- (interval-start
580 (ly:grob-robust-relative-extent right-span common X))
582 (+ left-x minimum-length)))
583 (self-x (ly:grob-relative-coordinate spanner common X))
584 (dx (- right-x left-x))
585 (exp (list 'path thickness
593 ,dx ,(* 0.66 delta-y)
598 (cons (- left-x self-x) (- right-x self-x))
599 (cons (min 0 delta-y)
603 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
606 (define-public (grace-spacing::calc-shortest-duration grob)
607 (let* ((cols (ly:grob-object grob 'columns))
610 (ly:moment-sub (ly:grob-property
611 (ly:grob-array-ref cols (1+ idx)) 'when)
613 (ly:grob-array-ref cols idx) 'when))))
615 (moment-min (lambda (x y)
618 (if (ly:moment<? x y)
624 (fold moment-min #f (map get-difference
625 (iota (1- (ly:grob-array-length cols)))))))
628 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
631 (define-public (fingering::calc-text grob)
632 (let* ((event (event-cause grob))
633 (digit (ly:event-property event 'digit)))
636 (ly:input-message (ly:event-property event 'origin)
637 "Warning: Fingering notation for finger number ~a"
640 (number->string digit 10)))
642 (define-public (string-number::calc-text grob)
643 (let ((digit (ly:event-property (event-cause grob) 'string-number)))
645 (number->string digit 10)))
647 (define-public (stroke-finger::calc-text grob)
648 (let* ((digit (ly:event-property (event-cause grob) 'digit))
649 (text (ly:event-property (event-cause grob) 'text)))
653 (vector-ref (ly:grob-property grob 'digit-names)
654 (1- (max (min 5 digit) 1))))))
657 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
660 (define-public (hairpin::calc-grow-direction grob)
661 (if (eq? (ly:event-property (event-cause grob) 'class) 'decrescendo-event)
665 (define-public (dynamic-text-spanner::before-line-breaking grob)
666 "Monitor left bound of @code{DynamicTextSpanner} for absolute dynamics.
667 If found, ensure @code{DynamicText} does not collide with spanner text by
668 changing @code{'attach-dir} and @code{'padding}. Reads the
669 @code{'right-padding} property of @code{DynamicText} to fine tune space
670 between the two text elements."
671 (let ((left-bound (ly:spanner-bound grob LEFT)))
672 (if (grob::has-interface left-bound 'dynamic-text-interface)
673 (let* ((details (ly:grob-property grob 'bound-details))
674 (left-details (ly:assoc-get 'left details))
675 (my-padding (ly:assoc-get 'padding left-details))
676 (script-padding (ly:grob-property left-bound 'right-padding 0)))
678 (and (number? my-padding)
679 (ly:grob-set-nested-property! grob
680 '(bound-details left attach-dir)
682 (ly:grob-set-nested-property! grob
683 '(bound-details left padding)
684 (+ my-padding script-padding)))))))
687 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
690 (define-public (lyric-text::print grob)
691 "Allow interpretation of tildes as lyric tieing marks."
693 (let ((text (ly:grob-property grob 'text)))
695 (grob-interpret-markup grob (if (string? text)
696 (make-tied-lyric-markup text)
699 (define-public ((grob::calc-property-by-copy prop) grob)
700 (ly:event-property (event-cause grob) prop))
703 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
706 (define-public (fret-board::calc-stencil grob)
707 (grob-interpret-markup
709 (make-fret-diagram-verbose-markup
710 (ly:grob-property grob 'dot-placement-list))))
713 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
716 (define-public (script-interface::calc-x-offset grob)
717 (ly:grob-property grob 'positioning-done)
718 (let* ((shift (ly:grob-property grob 'toward-stem-shift 0.0))
720 (ly:self-alignment-interface::centered-on-x-parent grob))
721 (note-head-grob (ly:grob-parent grob X))
722 (stem-grob (ly:grob-object note-head-grob 'stem)))
724 (+ note-head-location
725 ;; If the property 'toward-stem-shift is defined and the script
726 ;; has the same direction as the stem, move the script accordingly.
727 ;; Since scripts can also be over skips, we need to check whether
728 ;; the grob has a stem at all.
729 (if (ly:grob? stem-grob)
730 (let ((dir1 (ly:grob-property grob 'direction))
731 (dir2 (ly:grob-property stem-grob 'direction)))
732 (if (equal? dir1 dir2)
733 (let* ((common-refp (ly:grob-common-refpoint grob stem-grob X))
735 (ly:grob-relative-coordinate stem-grob common-refp X)))
736 (* shift (- stem-location note-head-location)))
741 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
744 (define-public (system-start-text::print grob)
745 (let* ((left-bound (ly:spanner-bound grob LEFT))
746 (left-mom (ly:grob-property left-bound 'when))
747 (name (if (moment<=? left-mom ZERO-MOMENT)
748 (ly:grob-property grob 'long-text)
749 (ly:grob-property grob 'text))))
751 (if (and (markup? name)
752 (!= (ly:item-break-dir left-bound) CENTER))
754 (grob-interpret-markup grob name)
755 (ly:grob-suicide! grob))))
757 (define-public (system-start-text::calc-x-offset grob)
758 (let* ((left-bound (ly:spanner-bound grob LEFT))
759 (left-mom (ly:grob-property left-bound 'when))
760 (layout (ly:grob-layout grob))
761 (indent (ly:output-def-lookup layout
762 (if (moment<=? left-mom ZERO-MOMENT)
766 (system (ly:grob-system grob))
767 (my-extent (ly:grob-extent grob system X))
768 (elements (ly:grob-object system 'elements))
769 (common (ly:grob-common-refpoint-of-array system elements X))
770 (total-ext empty-interval)
771 (align-x (ly:grob-property grob 'self-alignment-X 0))
772 (padding (min 0 (- (interval-length my-extent) indent)))
773 (right-padding (- padding
774 (/ (* padding (1+ align-x)) 2))))
776 ;; compensate for the variation in delimiter extents by
777 ;; calculating an X-offset correction based on united extents
778 ;; of all delimiters in this system
779 (let unite-delims ((l (ly:grob-array-length elements)))
781 (let ((elt (ly:grob-array-ref elements (1- l))))
783 (if (grob::has-interface elt 'system-start-delimiter-interface)
784 (let ((dims (ly:grob-extent elt common X)))
785 (if (interval-sane? dims)
786 (set! total-ext (interval-union total-ext dims)))))
787 (unite-delims (1- l)))))
790 (ly:side-position-interface::x-aligned-side grob)
792 (- (interval-length total-ext)))))
794 (define-public (system-start-text::calc-y-offset grob)
796 (define (live-elements-list me)
797 (let* ((elements (ly:grob-object me 'elements))
798 (elts-length (ly:grob-array-length elements))
801 (let get-live ((len elts-length))
803 (let ((elt (ly:grob-array-ref elements (1- len))))
805 (if (grob::is-live? elt)
806 (set! live-elements (cons elt live-elements)))
807 (get-live (1- len)))))
810 (let* ((left-bound (ly:spanner-bound grob LEFT))
811 (live-elts (live-elements-list grob))
812 (system (ly:grob-system grob))
813 (extent empty-interval))
815 (if (and (pair? live-elts)
816 (interval-sane? (ly:grob-extent grob system Y)))
817 (let get-extent ((lst live-elts))
819 (let ((axis-group (car lst)))
821 (if (and (ly:spanner? axis-group)
822 (equal? (ly:spanner-bound axis-group LEFT)
824 (set! extent (add-point extent
825 (ly:grob-relative-coordinate
826 axis-group system Y))))
827 (get-extent (cdr lst)))))
828 ;; no live axis group(s) for this instrument name -> remove from system
829 (ly:grob-suicide! grob))
832 (ly:self-alignment-interface::y-aligned-on-self grob)
833 (interval-center extent))))
836 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
839 (define-public (ambitus::print grob)
840 (let ((heads (ly:grob-object grob 'note-heads)))
842 (if (and (ly:grob-array? heads)
843 (= (ly:grob-array-length heads) 2))
844 (let* ((common (ly:grob-common-refpoint-of-array grob heads Y))
845 (head-down (ly:grob-array-ref heads 0))
846 (head-up (ly:grob-array-ref heads 1))
847 (gap (ly:grob-property grob 'gap 0.35))
848 (point-min (+ (interval-end (ly:grob-extent head-down common Y))
850 (point-max (- (interval-start (ly:grob-extent head-up common Y))
853 (if (< point-min point-max)
854 (let* ((layout (ly:grob-layout grob))
855 (line-thick (ly:output-def-lookup layout 'line-thickness))
856 (blot (ly:output-def-lookup layout 'blot-diameter))
857 (grob-thick (ly:grob-property grob 'thickness 2))
858 (width (* line-thick grob-thick))
859 (x-ext (symmetric-interval (/ width 2)))
860 (y-ext (cons point-min point-max))
861 (line (ly:round-filled-box x-ext y-ext blot))
862 (y-coord (ly:grob-relative-coordinate grob common Y)))
864 (ly:stencil-translate-axis line (- y-coord) Y))
867 (ly:grob-suicide! grob)