In "C:\Users\franc\Documents\lilypond-2.24.4\share\lilypond\2.24.4\ly\
event-listener.ly"
I see the function *#(define (format-note engraver event)* which displays
information about "notes".
How to display these additional information ? :
- page number where the not is engraved
- x,y pixel position where the note is engraved in the png page
I have some difficulties locating the piece of documentation with all these
properties, and the way to use it...
Thank you for your cooperation
Franck Revolle
frevo...@gmail.com
Use-case : engrave score in png files,and follow the notes, for my freeware
Expresseur.com
Extract of the code to complete in event-listener.ly :
#(define (format-note engraver event)
(let* ((origin (ly:input-file-line-char-column
(ly:event-property event 'origin)))
(drum-type (ly:event-property event 'drum-type))
(pitch (ly:event-property event 'pitch)))
(print-line engraver
(if (ly:pitch? pitch)
"note"
"type")
(if (ly:pitch? pitch)
;; get a MIDI pitch value.
(+ 60 (ly:pitch-semitones
(ly:event-property event 'pitch)))
drum-type)
(ly:duration->string
(ly:event-property event 'duration))
(format-moment (ly:duration-length
(ly:event-property event 'duration)))
;; point and click info
(ly:format "point-and-click ~a ~a"
(caddr origin)
(cadr origin)))))
code to complete to display page number, and x,y pixel position in the Png ?
*(ly:format "pos ~a ~a ~a"*
* (pageNumber ?)*
* (xPixel ?)*
(yPixel ?))
