-/*
- span-arpeggio.cc -- implement Span_arpeggio
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-#include "axis-group-interface.hh"
-#include "molecule.hh"
-#include "paper-def.hh"
-#include "lookup.hh"
-#include "arpeggio.hh"
-#include "span-arpeggio.hh"
-#include "score-element.hh"
-#include "stem.hh"
-#include "staff-symbol-referencer.hh"
-
-bool
-Span_arpeggio::has_interface (Score_element* me)
-{
- return me && me->has_interface (ly_symbol2scm ("span-arpeggio-interface"));
-}
-
-/*
- We could collapse this with Arpeggio::brew_molecule, but that requires
- hairy scm callback hacking.
- */
-MAKE_SCHEME_CALLBACK (Span_arpeggio, brew_molecule, 1);
-SCM
-Span_arpeggio::brew_molecule (SCM smob)
-{
- Score_element *me = unsmob_element (smob);
-
- Interval iv;
- //Score_element *common = me;
- Score_element *common = 0;
- for (SCM s = me->get_elt_property ("arpeggios"); gh_pair_p (s); s = gh_cdr (s))
- {
- Score_element *arpeggio = unsmob_element (gh_car (s));
- if (common)
- common = arpeggio->common_refpoint (common, Y_AXIS);
- else
- common = arpeggio;
- }
- if (0) //common)
- for (SCM s = me->get_elt_property ("arpeggios"); gh_pair_p (s); s = gh_cdr (s))
- {
- Score_element *arpeggio = unsmob_element (gh_car (s));
- // this dumps core: someone has no y-parent
- Real c = common->relative_coordinate (arpeggio, Y_AXIS);
- //iv.unite (Arpeggio::head_positions (stem));
- iv.unite (Interval (c, c));
- }
- else
- iv = Interval (-23, 5);
-
- Molecule mol;
- Molecule arpeggio = me->paper_l ()->lookup_l (0)->afm_find ("scripts-arpeggio");
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- for (int i = (int)iv[MIN]/ 2; i < (int)(iv[MAX] - 1)/ 2; i++)
- {
- Molecule a (arpeggio);
- a.translate_axis (i * staff_space, Y_AXIS);
- mol.add_molecule (a);
- }
- mol.translate (Offset (-2 * staff_space, 0));
-
- return mol.create_scheme ();
-}
-