;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 1998--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;; Jan Nieuwenhuizen <janneke@gnu.org>
;;;; distances are given in line-thickness (thicknesses) and
accidental-suggestion-interface
self-alignment-interface
font-interface))))))
+
(AccidentalPlacement
. (
(left-padding . 0.2)
+ ;; for horizontally stacked scripts.
+ (script-priority . -100)
+ (direction . ,LEFT)
+
(positioning-done . ,ly:accidental-placement::calc-positioning-done)
(X-extent . ,ly:axis-group-interface::width)
(right-padding . 0.15)
(meta . ((class . Item)
(interfaces . (accidental-placement-interface))))))
+
(Ambitus
. (
(axes . (0 1))
(X-extent . ,ly:axis-group-interface::width)
- (X-extent . ,ly:axis-group-interface::height)
+ (Y-extent . ,ly:axis-group-interface::height)
(space-alist . (
(clef . (extra-space . 0.5))
(key-signature . (extra-space . 0.0))
(X-offset . ,ly:side-position-interface::x-aligned-side)
(direction . ,LEFT)
(padding . 0.5)
+ (script-priority . 0)
(side-axis . ,X)
(staff-position . 0.0)
(meta . ((class . Item)
side-position-interface
font-interface))))))
+ (BalloonTextItem
+ . ((stencil . ,ly:balloon-interface::print)
+ (text . ,(grob::calc-property-by-copy 'text))
+ (X-offset . ,(grob::calc-property-by-copy 'X-offset))
+ (Y-offset . ,(grob::calc-property-by-copy 'Y-offset))
+ (meta . ((class . Item)
+ (interfaces . (text-interface
+ font-interface))))))
(BarLine
. (
(break-align-symbol . staff-bar)
(glyph . "|")
+ (gap . 0.4)
(layer . 0)
(break-visibility . ,all-visible)
(non-musical . #t)
(X-offset . ,(ly:make-simple-closure
`(,+
,(ly:make-simple-closure
- (list ly:break-alignment-align-interface::self-align-callback))
+ (list ly:break-alignable-interface::self-align-callback))
,(ly:make-simple-closure
(list ly:self-alignment-interface::x-aligned-on-self)))))
(self-alignment-X . 1)
+
+ ;; want the bar number before the clef at line start.
(break-align-symbol . left-edge)
(meta .
((class . Item)
(interfaces . (side-position-interface
text-interface
- break-alignment-align-interface
+ break-alignable-interface
self-alignment-interface
font-interface
))))
. (
(axes . (,Y))
(Y-extent . ,ly:axis-group-interface::height)
+ (skylines . ,ly:axis-group-interface::calc-skylines)
(meta . ((class . Spanner)
(interfaces . (axis-group-interface
))))))
(interfaces . (staff-symbol-referencer-interface
beam-interface))))))
+ (BendAfter
+ . (
+ (stencil . ,bend::print)
+ (thickness . 2.0)
+ (meta . ((class . Spanner)
+ (interfaces . (spanner-interface
+ bend-after-interface))))))
+
(BreakAlignment
. (
(non-musical . #t)
(stacking-dir . 1)
- (positioning-done . ,ly:break-align-interface::calc-positioning-done)
+ (positioning-done . ,ly:break-alignment-interface::calc-positioning-done)
(X-extent . ,ly:axis-group-interface::width)
(break-align-orders . ;; end of line
#((
(stencil . ,ly:clef::print)
(glyph-name . ,ly:clef::calc-glyph-name)
(non-musical . #t)
+ (avoid-slur . inside)
(font-family . music)
(break-align-symbol . clef)
(break-visibility . ,begin-of-line-visible)
(Dots
. (
(stencil . ,ly:dots::print)
- (dot-count . 1)
+ (dot-count . ,dots::calc-dot-count)
(meta . ((class . Item)
(interfaces . (font-interface
staff-symbol-referencer-interface
(meta . ((class . Item)
(interfaces . (font-interface
break-aligned-interface
- percent-repeat-interface))))))
+ percent-repeat-item-interface))))))
(DoublePercentRepeatCounter
. (
(meta . ((class . Item)
(interfaces . (side-position-interface
self-alignment-interface
- percent-repeat-interface
+ percent-repeat-item-interface
font-interface
text-interface))))))
(DynamicLineSpanner
(minimum-space . 1.2)
(direction . ,DOWN)
(side-axis . ,Y)
+ (outside-staff-priority . 250)
(Y-extent . ,ly:axis-group-interface::height)
(X-extent . ,ly:axis-group-interface::width)
(meta . ((class . Spanner)
(font-shape . italic)
(avoid-slur . around)
(no-spacing-rods . #t)
- (script-priority . 100)
+ (outside-staff-priority . 250)
(meta . ((class . Item)
(interfaces . (font-interface
text-interface
(meta . ((class . Spanner)
(interfaces . (font-interface
text-interface
+ line-spanner-interface
dynamic-interface
dynamic-text-spanner-interface
spanner-interface))))))
+
(Fingering
. (
(stencil . ,ly:text-interface::print)
(direction . ,ly:script-interface::calc-direction)
-
+ (text . ,fingering::calc-text)
(font-encoding . fetaNumber)
(font-size . -5) ; don't overlap when next to heads.
(meta . ((class . Item)
side-position-interface
self-alignment-interface
item-interface))))))
+ (FretBoard
+ . ((stencil . ,fret-board::calc-stencil)
+ (finger-code . below-string)
+ (meta . ((class . Item)
+ (interfaces . (fret-diagram-interface
+ font-interface
+ ))))
+ ))
(Glissando
. (
(style . line)
(gap . 0.5)
(zigzag-width . 0.75)
- (non-musical . #t)
(X-extent . #f)
(Y-extent . #f)
(stencil . ,ly:line-spanner::print)
(interfaces . (line-interface
line-spanner-interface))))))
+ (GraceSpacing
+ . (
+ (common-shortest-duration . ,grace-spacing::calc-shortest-duration)
+ (spacing-increment . 0.8)
+ (shortest-duration-space . 1.6)
+ (meta . ((class . Spanner)
+ (interfaces . (grace-spacing-interface
+ spacing-interface
+ spacing-options-interface
+ spanner-interface))))))
(GridPoint
. (
(X-extent . (0 . 0))
(stencil . ,ly:hairpin::print)
(springs-and-rods . ,ly:spanner::set-spacing-rods)
(after-line-breaking . ,ly:hairpin::after-line-breaking)
+ (grow-direction . ,hairpin::calc-grow-direction)
(circled-tip . #f)
(thickness . 1.0)
(height . 0.6666)
(thickness . 1.0)
(stencil . ,ly:horizontal-bracket::print)
(Y-offset . ,ly:side-position-interface::y-aligned-side)
+ (connect-to-neighbor . ,ly:tuplet-bracket::calc-connect-to-neighbors)
+
(padding . 0.2)
(staff-padding . 0.2)
(direction . ,DOWN)
side-position-interface
font-interface))))))
+ (InstrumentSwitch
+ . (
+ (padding . 0.3)
+ (stencil . ,ly:text-interface::print)
+ (Y-offset . ,ly:side-position-interface::y-aligned-side)
+ (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
+ (staff-padding . 2)
+ (direction . ,UP)
+ (self-alignment-X . ,CENTER)
+ (meta . ((class . Item)
+ (interfaces . (system-start-text-interface
+ side-position-interface
+ font-interface))))))
+
(KeyCancellation
. (
(stencil . ,ly:key-signature-interface::print)
(KeySignature
. (
(stencil . ,ly:key-signature-interface::print)
+ (avoid-slur . inside)
(space-alist . (
(time-signature . (extra-space . 1.15))
(staff-bar . (extra-space . 1.1))
. (
(stencil . ,ly:tie::print)
(control-points . ,ly:semi-tie::calc-control-points)
- (direction . ,ly:semi-tie::calc-direction)
+ (direction . ,ly:tie::calc-direction)
(details . ((ratio . 0.333)
(height-limit . 1.0)))
+ (head-direction . ,LEFT)
(thickness . 1.0)
(meta . ((class . Item)
(interfaces . (semi-tie-interface))
(length-fraction . 0.25)
(layer . 0)
(meta . ((class . Spanner)
- (interfaces . (ledger-line-interface))))))
+ (interfaces . (ledger-line-spanner-interface))))))
(LeftEdge
. (
(minimum-length . 0.3)
(minimum-distance . 0.1)
(padding . 0.07)
- (springs-and-rods . ,ly:hyphen-spanner::set-spacing-rods)
- (stencil . ,ly:hyphen-spanner::print)
+ (springs-and-rods . ,ly:lyric-hyphen::set-spacing-rods)
+ (stencil . ,ly:lyric-hyphen::print)
(Y-extent . (0 . 0))
(meta . ((class . Spanner)
(interfaces . (lyric-interface
(LyricSpace
. ((minimum-distance . 0.45)
- (springs-and-rods . ,ly:hyphen-spanner::set-spacing-rods)
+ (springs-and-rods . ,ly:lyric-hyphen::set-spacing-rods)
(padding . 0.0)
(Y-extent . #f)
(X-extent . #f)
lyric-hyphen-interface spacing-interface))
))
))
+
(LyricText
. (
- (stencil . ,ly:text-interface::print)
+ (stencil . ,lyric-text::print)
+ (text . ,(grob::calc-property-by-copy 'text))
(X-offset . ,ly:self-alignment-interface::aligned-on-x-parent)
(self-alignment-X . 0)
(word-space . 0.6)
font-interface
text-interface))))))
+ (NonMusicalPaperColumn
+ . (
+ (allow-loose-spacing . #t)
+ (axes . (0))
+ (before-line-breaking . ,ly:paper-column::before-line-breaking)
+ (X-extent . ,ly:axis-group-interface::width)
+ ;; (stencil . ,ly:paper-column::print)
+
+ (non-musical . #t)
+ (line-break-permission . allow)
+ (page-break-permission . allow)
+
+ ;; debugging stuff: print column number.
+ ;; (font-size . -6) (font-name . "sans") (Y-extent . #f)
+
+ (meta . ((class . Paper_column)
+ (interfaces . (paper-column-interface
+ axis-group-interface
+ spaceable-grob-interface))))))
+
(NoteCollision
. (
(axes . (0 1))
(NoteHead
. (
(stencil . ,ly:note-head::print)
+ (duration-log . ,note-head::calc-duration-log)
(stem-attachment . ,ly:note-head::calc-stem-attachment)
(glyph-name . ,note-head::calc-glyph-name)
(Y-offset . ,ly:staff-symbol-referencer::callback)
(Y-offset . ,ly:side-position-interface::y-aligned-side)
(stencil . ,ly:text-interface::print)
-
- ;; no Y dimensions, because of lyrics under tenor clef.
- (Y-extent . (0 . 0))
(font-shape . italic)
(padding . 0.6)
(staff-padding . 0.2)
(dash-fraction . 0.3)
(edge-height . (0 . 1.2))
(direction . ,UP)
+ (outside-staff-priority . 400)
(meta . ((class . Spanner)
(interfaces . (ottava-bracket-interface
horizontal-bracket-interface
(PaperColumn
. (
(axes . (0))
+ (allow-loose-spacing . #t)
(before-line-breaking . ,ly:paper-column::before-line-breaking)
;; (stencil . ,ly:paper-column::print)
(X-extent . ,ly:axis-group-interface::width)
(ParenthesesItem
. ((stencil . ,parentheses-item::print)
+ (stencils . ,parentheses-item::calc-parenthesis-stencils)
(font-size . -6)
(padding . 0.2)
(meta . ((class . Item)
(interfaces . (parentheses-interface font-interface))))
))
+
+ (HarmonicParenthesesItem
+ . ((stencil . ,parentheses-item::print)
+ (padding . 0)
+ (stencils . ,parentheses-item::calc-angled-bracket-stencils)
+ (meta . ((class . Item)
+ (interfaces . (parentheses-interface font-interface))))
+ ))
(PhrasingSlur
. ((details . ,default-slur-details)
(meta . ((class . Spanner)
(interfaces . (slur-interface))))))
- (NonMusicalPaperColumn
- . (
- (axes . (0))
- (before-line-breaking . ,ly:paper-column::before-line-breaking)
- (X-extent . ,ly:axis-group-interface::width)
- ;; (stencil . ,ly:paper-column::print)
-
- (non-musical . #t)
- (line-break-permission . allow)
- ;; debugging stuff: print column number.
- ;; (font-size . -6) (font-name . "sans") (Y-extent . #f)
-
- (meta . ((class . Paper_column)
- (interfaces . (paper-column-interface
- axis-group-interface
- spaceable-grob-interface))))))
(PercentRepeat
. (
(meta . ((class . Spanner)
(interfaces . (multi-measure-rest-interface
font-interface
- percent-repeat-interface))))))
+ percent-repeat-item-interface))))))
(PercentRepeatCounter
. (
(stencil . ,ly:text-interface::print)
(meta . ((class . Spanner)
(interfaces . (side-position-interface
self-alignment-interface
- percent-repeat-interface
+ percent-repeat-item-interface
font-interface
text-interface))))))
(X-offset . ,(ly:make-simple-closure
`(,+
,(ly:make-simple-closure
- (list ly:break-alignment-align-interface::self-align-callback))
+ (list ly:break-alignable-interface::self-align-callback))
,(ly:make-simple-closure
(list ly:self-alignment-interface::x-aligned-on-self)))))
(break-visibility . ,end-of-line-invisible)
(break-align-symbol . staff-bar)
(padding . 0.8)
+ (outside-staff-priority . 1000)
(meta . ((class . Item)
(interfaces . (text-interface
side-position-interface
- break-alignment-align-interface
+ break-alignable-interface
font-interface
mark-interface
self-alignment-interface))))))
-
(RepeatSlash
. (
(stencil . ,ly:percent-repeat-item-interface::beat-slash)
(thickness . 0.48)
(slope . 1.7)
(meta . ((class . Item)
- (interfaces . (percent-repeat-interface))))))
+ (interfaces . (percent-repeat-item-interface))))))
+
(RepeatTie
. (
(stencil . ,ly:tie::print)
(control-points . ,ly:semi-tie::calc-control-points)
- (direction . ,ly:semi-tie::calc-direction)
+ (direction . ,ly:tie::calc-direction)
(details . ((ratio . 0.333)
(height-limit . 1.0)))
(thickness . 1.0)
+ (head-direction . ,RIGHT)
(meta . ((class . Item)
(interfaces . (semi-tie-interface))
))
. (
(X-extent . #f)
(Y-extent . #f)
+ (direction . ,ly:tie::calc-direction)
(head-direction . ,RIGHT)
+
(positioning-done . ,ly:semi-tie-column::calc-positioning-done)
(meta . ((class . Item)
(interfaces . (semi-tie-column-interface))
(Rest
. (
(stencil . ,ly:rest::print)
+ (duration-log . ,stem::calc-duration-log)
(X-extent . ,ly:rest::width)
(Y-extent . ,ly:rest::height)
(Y-offset . ,ly:rest::y-offset-callback)
. (
;; don't set direction here: it breaks staccato.
- ;; This value is sensitive: if too large, staccato dots will move a
- ;; space a away.
- (padding . 0.20)
+ ;; padding set in script definitions.
(staff-padding . 0.25)
;; (script-priority . 0) priorities for scripts, see script.scm
- (X-offset . , ly:self-alignment-interface::centered-on-x-parent)
-
+ (X-offset . ,ly:self-alignment-interface::centered-on-x-parent)
+ (Y-offset . ,ly:side-position-interface::y-aligned-side)
+ (side-axis . ,Y)
(stencil . ,ly:script-interface::print)
(direction . ,ly:script-interface::calc-direction)
(before-line-breaking . ,ly:script-column::before-line-breaking)
(meta . ((class . Item)
(interfaces . (script-column-interface))))))
+ (ScriptRow
+ . (
+ (before-line-breaking . ,ly:script-column::row-before-line-breaking)
+ (meta . ((class . Item)
+ (interfaces . (script-column-interface))))))
(SeparationItem
. (
- (X-extent . #f)
- (Y-extent . #f)
+ (avoid-slur . inside)
+ (X-extent . ,ly:axis-group-interface::width)
+ (Y-extent . ,ly:axis-group-interface::height)
+ (skylines . ,ly:separation-item::calc-skylines)
(meta . ((class . Item)
(interfaces . (spacing-interface
separation-item-interface))))))
(meta . ((class . Spanner)
(interfaces . (only-prebreak-interface
spacing-interface
- separation-spanner-interface))))))
+ separating-group-spanner-interface))))))
(Slur
. ((details . ,default-slur-details)
(meta . ((class . Spanner)
(interfaces . (slur-interface))))))
- (SostenutoPedal
+ (SostenutoPedal
. (
(stencil . ,ly:text-interface::print)
(direction . ,RIGHT)
(meta . ((class . Item)
(interfaces . (text-interface
self-alignment-interface
+ piano-pedal-script-interface
font-interface))))))
(SostenutoPedalLineSpanner
(SpacingSpanner
. (
(springs-and-rods . ,ly:spacing-spanner::set-springs)
+ (common-shortest-duration . ,ly:spacing-spanner::calc-common-shortest-duration)
(average-spacing-wishes . #t)
- (grace-space-factor . 0.6)
(shortest-duration-space . 2.0)
(spacing-increment . 1.2)
+
(base-shortest-duration . ,(ly:make-moment 3 16))
(meta . ((class . Spanner)
(interfaces . (spacing-interface
+ spacing-options-interface
spacing-spanner-interface))))))
(SpanBar
(Stem
. (
(direction . ,ly:stem::calc-direction)
+ (duration-log . ,stem::calc-duration-log)
(default-direction . ,ly:stem::calc-default-direction)
(stem-end-position . ,ly:stem::calc-stem-end-position)
+
(neutral-direction . ,DOWN)
(stem-info . ,ly:stem::calc-stem-info)
(positioning-done . ,ly:stem::calc-positioning-done)
(StringNumber
. (
(stencil . ,print-circled-text-callback)
+ (text . ,string-number::calc-text)
(padding . 0.5)
(staff-padding . 0.5)
(self-alignment-X . 0)
self-alignment-interface
item-interface))))))
+ (StrokeFinger
+ . (
+ (stencil . ,ly:text-interface::print)
+ (text . ,stroke-finger::calc-text)
+ (digit-names . #("p" "i" "m" "a" "x"))
+ (padding . 0.5)
+ (staff-padding . 0.5)
+ (self-alignment-X . 0)
+ (self-alignment-Y . 0)
+ (script-priority . 100)
+ (font-shape . italic)
+ (font-size . -4) ; don't overlap when next to heads.
+ (meta . ((class . Item)
+ (interfaces . (stroke-finger-interface
+ font-interface
+ text-script-interface
+ text-interface
+ side-position-interface
+ self-alignment-interface
+ item-interface))))))
+
+
(SustainPedal
. (
(no-spacing-rods . #t)
(meta . ((class . Item)
(interfaces . (piano-pedal-interface
text-spanner-interface
+ line-spanner-interface
text-interface
self-alignment-interface
+ piano-pedal-script-interface
font-interface))))))
(SustainPedalLineSpanner
(axes . (0 1))
(X-extent . ,ly:axis-group-interface::width)
(Y-extent . ,ly:axis-group-interface::height)
+ (skylines . ,ly:axis-group-interface::calc-skylines)
+ (skyline-horizontal-padding . 1.0)
(meta . ((class . System)
(interfaces . (system-interface
axis-group-interface))))))
(interfaces . (side-position-interface
system-start-delimiter-interface))))))
-
(TabNoteHead
. (
(stencil . ,ly:text-interface::print)
(Y-offset . ,ly:staff-symbol-referencer::callback)
+ (X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
+ (direction . 0)
(font-size . -2)
(stem-attachment . (0.0 . 1.35))
(font-series . bold)
. (
(no-spacing-rods . #t)
(X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
+ (Y-offset . ,ly:side-position-interface::y-aligned-side)
+ (side-axis . ,Y)
(direction . ,DOWN)
;; sync with Fingering ?
(stencil . ,ly:text-interface::print)
(direction . ,ly:script-interface::calc-direction)
+ (outside-staff-priority . 450)
(avoid-slur . around)
(slur-padding . 0.5)
(script-priority . 200)
(dash-period . 3.0)
(side-axis . ,Y)
(direction . ,UP)
+ (outside-staff-priority . 350)
(meta . ((class . Spanner)
(interfaces . (text-spanner-interface
+ line-spanner-interface
side-position-interface
font-interface))))))
(Tie
. (
(control-points . ,ly:tie::calc-control-points)
+ (springs-and-rods . ,ly:spanner::set-spacing-rods)
(avoid-slur . inside)
(direction . ,ly:tie::calc-direction)
(stencil . ,ly:tie::print)
(font-size . -6)
(details . (
- ;; for a full list, see tie-helper.cc
+ ;; for a full list, see tie-details.cc
(ratio . 0.333)
(center-staff-line-clearance . 0.6)
(tip-staff-line-clearance . 0.45)
(outer-tie-vertical-gap . 0.25)
(multi-tie-region-size . 1)
(between-length-limit . 1.0)))
+
(thickness . 1.2)
(line-thickness . 0.8)
(meta . ((class . Spanner)
(stencil . ,ly:time-signature::print)
(break-align-symbol . time-signature)
(break-visibility . ,all-visible)
+ (avoid-slur . inside)
(space-alist . (
(first-note . (fixed-space . 2.0))
(right-edge . (extra-space . 0.5))
(direction . ,UP)
(Y-offset . ,ly:side-position-interface::y-aligned-side)
(side-axis . ,Y)
+ (outside-staff-priority . 50)
(meta . ((class . Spanner)
(interfaces . (text-spanner-interface
+ line-spanner-interface
side-position-interface
font-interface))))))
(stencil . ,ly:accidental-interface::print)
(meta . ((class . Item)
(interfaces . (item-interface
- accidental-interface
+ trill-pitch-accidental-interface
side-position-interface
font-interface))))))
(axes . (,X))
(font-size . -4)
(stencil . ,parenthesize-elements)
+ (stencils . ,parentheses-item::calc-parenthesis-stencils)
(direction . ,RIGHT)
(side-axis . ,X)
(padding . 0.3)
(edge-height . (0.7 . 0.7))
(shorten-pair . (-0.2 . -0.2))
(staff-padding . 0.25)
-
(direction . ,ly:tuplet-bracket::calc-direction)
(positions . ,ly:tuplet-bracket::calc-positions)
(connect-to-neighbor . ,ly:tuplet-bracket::calc-connect-to-neighbors)
(TupletNumber
. (
(stencil . ,ly:tuplet-number::print)
+ (text . ,tuplet-number::calc-denominator-text)
(font-shape . italic)
(font-size . -2)
(avoid-slur . inside)
(X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
(meta . ((class . Item)
(interfaces . (text-interface
+ piano-pedal-script-interface
self-alignment-interface
font-interface))))))
(Y-extent . ,ly:axis-group-interface::height)
(X-extent . ,ly:axis-group-interface::width)
(stacking-dir . -1)
+ (padding . 0.1)
+ (skylines . ,ly:axis-group-interface::combine-skylines)
(meta . ((class . Spanner)
(interfaces . (align-interface
axis-group-interface))))))
. (
(axes . (1))
(Y-offset . ,ly:hara-kiri-group-spanner::force-hara-kiri-callback)
-
(Y-extent . ,ly:hara-kiri-group-spanner::y-extent)
(X-extent . ,ly:axis-group-interface::width)
+ (skylines . ,ly:axis-group-interface::calc-skylines);
(meta . ((class . Spanner)
(interfaces . (axis-group-interface
- hara-kiri-group-interface
+ hara-kiri-group-spanner-interface
vertically-spaceable-interface))))))
(edge-height . (2.0 . 2.0)) ;; staff-space;
(minimum-space . 5)
(font-size . -4)
+ (outside-staff-priority . 100)
(meta . ((class . Spanner)
(interfaces . (volta-bracket-interface
horizontal-bracket-interface
(set! all-grob-descriptions (sort all-grob-descriptions alist<?))
+(define pure-print-callbacks
+ (list
+ ly:bar-line::print
+ ly:note-head::print
+ ly:accidental-interface::print
+ ly:dots::print
+ ly:clef::print
+ ly:text-interface::print
+ ly:script-interface::print))
+
+;; ly:grob::stencil-extent is safe iff the print callback is safe too
+(define (pure-stencil-height grob start stop)
+ (let ((sten (ly:grob-property-data grob 'stencil)))
+ (if (or
+ (ly:stencil? sten)
+ (memq sten pure-print-callbacks))
+ (ly:grob::stencil-height grob)
+ '(0 . 0))))
+
+(define pure-conversions-alist
+ (list
+ `(,ly:slur::outside-slur-callback . ,ly:slur::pure-outside-slur-callback)
+ `(,ly:stem::height . ,ly:stem::pure-height)
+ `(,ly:grob::stencil-height . ,pure-stencil-height)
+ `(,ly:side-position-interface::y-aligned-side . ,ly:side-position-interface::pure-y-aligned-side)
+ `(,ly:axis-group-interface::height . ,ly:axis-group-interface::pure-height)
+ `(,ly:hara-kiri-group-spanner::y-extent . ,ly:hara-kiri-group-spanner::pure-height)
+ `(,ly:slur::height . ,ly:slur::pure-height)
+ `(,ly:side-position-interface::y-aligned-side . ,ly:side-position-interface::pure-y-aligned-side)))
+
+(define pure-functions
+ (list
+ ly:staff-symbol-referencer::callback
+ ly:staff-symbol::height))
+
+(define-public (pure-relevant grob)
+ (let ((extent-callback (ly:grob-property-data grob 'Y-extent)))
+ (not (eq? #f
+ (or
+ (pair? extent-callback)
+ (memq extent-callback pure-functions)
+ (and
+ (pair? (assq extent-callback pure-conversions-alist))
+ (begin
+ (or
+ (not (eq? extent-callback ly:grob::stencil-height))
+ (memq (ly:grob-property-data grob 'stencil) pure-print-callbacks)
+ (ly:stencil? (ly:grob-property-data grob 'stencil))))))))))
+
+(define-public (call-pure-function unpure args start end)
+ (if (ly:simple-closure? unpure)
+ (ly:eval-simple-closure (car args) unpure start end)
+ (if (not (procedure? unpure))
+ unpure
+ (if (memq unpure pure-functions)
+ (apply unpure args)
+ (let ((pure (assq unpure pure-conversions-alist)))
+ (if pure
+ (apply (cdr pure)
+ (append
+ (list (car args) start end)
+ (cdr args)))))))))