lilypond-1.3.95

diff --git a/lily/span-arpeggio.cc b/lily/span-arpeggio.cc
new file mode 100644 (file)
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+++ b/lily/span-arpeggio.cc
@@ -0,0 +1,67 @@
+/*
+  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;
+  for (SCM s = me->get_elt_property ("arpeggios"); gh_pair_p (s); s = gh_cdr (s))
+    {
+      Score_element *arpeggio = unsmob_element (gh_car (s));
+      common = arpeggio->common_refpoint (common, Y_AXIS);
+    }
+  // Hmm, nothing in common?
+  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));
+       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 (); 
+}
+