The usual mistake… and once again with attachment ;-)
Am 25.02.2015 um 09:35 schrieb Simon Albrecht:
Hello David, (hello list,)
unfortunately through some change between versions 2.19.8 and .15 your
very useful lyric-word-compressor code ceased to work. It exits with
an error stating that ‘value #<grob_properties> must be of type
<list>’ (written from memory). Could you please help with this?
Thanks in advance, Simon
%\version "2.18.0"
% 2.19.8 works, 2.19.15 fails
\version "2.19.15"
% courtesy of David Nalesnik
%%%%%%%%%%%%%%%% USAGE: %%%%%%%%%%%%%%%%%%%%
% add the following in \layout:
%{
\context { \Global
\grobdescriptions #all-grob-descriptions
}
\context { \Lyrics
\consists \collectlyricwordEngraver
\wordcompress 0.3 % or another value between ca. 0.1 and 0.5
}
%}
%%%%%%%%%% ADD NEW GROB INTERFACE %%%%%%%%%%%%%%%
#(ly:add-interface
'lyric-word-interface
"A word of lyrics. Includes syllables and hyphens."
'(text-items))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%% CREATE NEW GROB PROPERTY %%%%%%%%%%%
#(define (define-grob-property symbol type? description)
(if (not (equal? (object-property symbol 'backend-doc) #f))
(ly:error (_ "symbol ~S redefined") symbol))
(set-object-property! symbol 'backend-type? type?)
(set-object-property! symbol 'backend-doc description)
symbol)
#(map
(lambda (x)
(apply define-grob-property x))
`(
(text-items ,list? "Syllables and hyphens of a word of lyrics")))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%% ADD DEFINITION OF GROB %%%%%%%%%%%%%%
#(define (add-grob-definition grob-name grob-entry)
(let* ((meta-entry (assoc-get 'meta grob-entry))
(class (assoc-get 'class meta-entry))
(ifaces-entry (assoc-get 'interfaces meta-entry)))
(set-object-property! grob-name 'translation-type? list?)
(set-object-property! grob-name 'is-grob? #t)
(set! ifaces-entry (append (case class
((Item) '(item-interface))
((Spanner) '(spanner-interface))
((Paper_column) '((item-interface
paper-column-interface)))
((System) '((system-interface
spanner-interface)))
(else '(unknown-interface)))
ifaces-entry))
(set! ifaces-entry (uniq-list (sort ifaces-entry symbol<?)))
(set! ifaces-entry (cons 'grob-interface ifaces-entry))
(set! meta-entry (assoc-set! meta-entry 'name grob-name))
(set! meta-entry (assoc-set! meta-entry 'interfaces
ifaces-entry))
(set! grob-entry (assoc-set! grob-entry 'meta meta-entry))
(set! all-grob-descriptions
(cons (cons grob-name grob-entry)
all-grob-descriptions))))
#(add-grob-definition
'LyricWord
`(;(stencil . ,ly:lyric-word::print)
(meta . ((class . Spanner)
(interfaces . (lyric-hyphen-interface
lyric-word-interface
text-interface))))))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#(define (add-bound-item spanner item)
(if (null? (ly:spanner-bound spanner LEFT))
(ly:spanner-set-bound! spanner LEFT item)
(ly:spanner-set-bound! spanner RIGHT item)))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%% ENGRAVER %%%%%%%%%%%%%%%%
collectLyricWordEngraver =
% Collect lyric syllables and hyphens into words. (LyricExtender?)
% The bounds of a LyricWord should be LyricText grobs, when available.
% When a LyricWord consists of a single syllable, the left and right bounds
% should be the same grob.
% When a spanner is broken, the ends not attached to LyricText grobs should
% attach to NonMusicalPaperColumn, as with any spanner.
#(lambda (context)
(let ((word-bits '()) ; holds syllables and hyphens
(word '()) ; LyricWord grob we're building
(collect #f)) ; signal to end word and begin another
(make-engraver
(acknowledgers
((lyric-syllable-interface engraver grob source-engraver)
(set! collect #t)
(set! word-bits (append word-bits (list grob)))
(if (ly:grob? word)
(add-bound-item word grob)))
((lyric-hyphen-interface engraver grob source-engraver)
(let* ((props (ly:grob-basic-properties grob))
(meta (assoc-get 'meta props))
(name (assoc-get 'name meta)))
; don't collect LyricSpace
; use it as our signal to end o word/start a new one
(if (eq? name 'LyricSpace)
(set! collect #f)
(set! word-bits (append word-bits (list grob)))))))
((process-music trans)
(if (and collect (pair? word-bits))
(begin
(if (not (ly:grob? word))
(set! word (ly:engraver-make-grob trans 'LyricWord '())))
; car should always be a LyricText grob, but maybe a check is in order
(add-bound-item word (car word-bits))
(for-each
(lambda (x)
(ly:pointer-group-interface::add-grob word 'text-items x))
word-bits)))
(if (not collect)
(begin
(if (ly:grob? word)
(begin
(if (pair? word-bits)
(begin
(for-each
(lambda (x)
(ly:pointer-group-interface::add-grob word 'text-items x))
word-bits)
(if (null? (ly:spanner-bound word RIGHT))
(ly:spanner-set-bound!
word RIGHT
(car word-bits)))))
(set! word (ly:engraver-make-grob trans 'LyricWord '()))
(set! collect #t)))
(if (not (ly:grob? word))
(begin
(set! word (ly:engraver-make-grob trans 'LyricWord '()))
(if (pair? word-bits)
(begin
(ly:spanner-set-bound! word LEFT (car word-bits))
(for-each
(lambda (x)
(ly:pointer-group-interface::add-grob word 'text-items x))
word-bits)
(if (null? (ly:spanner-bound word RIGHT))
(ly:spanner-set-bound! word RIGHT (car word-bits)))))
(set! word '())))))
(set! word-bits '())))))
% backwards compatibility
collectlyricwordEngraver = \collectLyricWordEngraver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#(define (compress-pair syl-a hyphen syl-b threshold)
(let* ((hyphen-sten (ly:lyric-hyphen::print hyphen))
(hyphen-ex
(if (ly:stencil? hyphen-sten)
(ly:stencil-extent hyphen-sten X)
(cons (/ threshold -2) (/ threshold 2)))))
(if (>= (interval-length hyphen-ex) threshold) ;; >= : fix broken-word bug
'() ; no compression--DO NOTHING!
(let*
((syl-a-text (ly:grob-property syl-a 'text))
(syl-a-text (if (markup? syl-a-text) syl-a-text (markup syl-a-text)))
(syl-b-text (ly:grob-property syl-b 'text))
(syl-b-text (if (markup? syl-b-text) syl-b-text (markup syl-b-text)))
(full-text (make-concat-markup (list syl-a-text syl-b-text))))
(set! (ly:grob-property syl-a 'text) full-text)
(set! (ly:grob-property syl-b 'text) empty-markup)
(set! (ly:grob-property syl-a 'stencil) lyric-text::print)
(set! (ly:grob-property syl-b 'stencil) lyric-text::print)
(set! (ly:grob-property hyphen 'stencil) empty-stencil)))))
#(define (lyric-word-compressor threshold)
(lambda (grob) ; LyricWord
(let* ((items (ly:grob-object grob 'text-items))
(item-list (ly:grob-array->list items)))
(if (> (length item-list) 1) ; do nothing to monosyllabic words
(let* ((text-grobs
(filter
(lambda (item)
(grob::has-interface item 'lyric-syllable-interface))
item-list))
(hyphen-grobs
(filter
(lambda (item)
(grob::has-interface item 'lyric-hyphen-interface))
item-list)))
(define (helper seed tx-list hy-list)
(if (and (pair? (cdr tx-list))
(pair? hy-list))
(let ((next-syl (cadr tx-list))
(hyphen (car hy-list)))
(compress-pair seed hyphen next-syl threshold)
(if (equal? empty-markup (ly:grob-property next-syl 'text))
(helper seed (cdr tx-list) (cdr hy-list))
(helper (cadr tx-list) (cdr tx-list) (cdr hy-list))))))
(helper (car text-grobs) text-grobs hyphen-grobs))))))
%%%%%%%%%%%%%% SOME OTHER FUNCTIONS %%%%%%%%%%%%%%
#(define (dim-hack grob ax)
(let* ((elts (ly:grob-object grob 'text-items))
(common (ly:grob-common-refpoint-of-array grob elts ax))
(rel (ly:relative-group-extent elts common ax))
(off (ly:grob-relative-coordinate grob common ax)))
(coord-translate rel (- off))))
#(define (height-hack grob)
(dim-hack grob Y))
#(define (width-hack grob)
(dim-hack grob X))
#(define (ly:lyric-word::underline grob)
(let* ((height (height-hack grob))
(width (width-hack grob)))
(make-line-stencil 0.1 (car width) 0 (cdr width) 0)))
#(define (ly:lyric-word::boxer grob)
(let* ((yext (height-hack grob))
(xext (width-hack grob))
(thick 0.1))
(ly:stencil-add
(make-filled-box-stencil xext (cons (- (car yext) thick) (car yext)))
(make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick)))
(make-filled-box-stencil (cons (cdr xext) (+ (cdr xext) thick)) yext)
(make-filled-box-stencil (cons (- (car xext) thick) (car xext)) yext))))
wordunderline = \once \override LyricWord.stencil = #ly:lyric-word::underline
wordbox = \once \override LyricWord.stencil = #ly:lyric-word::boxer
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%% HELPER FUNCTION %%%%%%%%%%%%%%
wordcompress =
#(define-music-function (parser location num) (number?)
(cond
((< num 0)
(ly:error "\\wordcompress should get a non-negative value."))
(else
(begin
(if (>= num 0.5)
(ly:warning "Attention: 0.4 is a rather large value for \\wordcompress already!"))
#{
\override LyricWord.after-line-breaking = #(lyric-word-compressor num)
\override LyricHyphen.minimum-distance = #0
\override LyricSpace.minimum-distance = #1
#}))))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\layout {
\context { \Global
\grobdescriptions #all-grob-descriptions
}
\context { \Lyrics
\consists \collectLyricWordEngraver
\wordcompress 0.3 % or another value between ca. 0.1 and 0.5
}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%% TEST %%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\score {
<<
\relative { c' d e f g a b c g1 c,2. r4 }
\addlyrics { Here I test the Ly -- ric Word Com -- pres -- sor. }
>>
}_______________________________________________
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