On 2/10/10 6:42 PM, "Eric Knapp" <ekn...@gmail.com> wrote:
> > With this in mind, my string marker function needs to have all the > pitches and strings for a chord to determine where to draw the > markers. I'm envisioning a function that receives two lists and can > work out all the combinations. What I can't figure out is how to > capture the chord and all its data together. I'm getting all the > individual events, but that's not enough. > > Am I making sense and what do you suggest? > You're making great sense. This is *really* easy, once you understand how LilyPond engravers work. As an example, look at lily/fretboard-engraver.cc. The engraver contains two vectors: note_events_ and tabstring_events_. The listeners for notes and string-events do a push_back on note_events_ and tabstring_events_, respectively. That's all they do. The process_music function, which is called after all the events are listened to, then works with note_events_ and tabstring_events_. All of the information on the notes and strings are there. You can also see this same structure (but with a touch more complexity) in lily/tab-note-heads-engraver.cc. So your staff-tab-string-marker-engraver (or whatever it's called) will listen to both note-events and string-number-events, and create these vectors. Then, based on the contents of the vectors, it can create the appropriate stringMarker grobs, with the correct X-offset to put the string markers in the right position. Let me know if you have more questions on this. Thanks, Carl _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-devel
