Fix #455.

[lilypond.git] / lily / arpeggio.cc

diff --git a/lily/arpeggio.cc b/lily/arpeggio.cc
index fe7b116821778f883f5b028d9a3717d50dbdf35f..a5c070398e53149b4560753a20626c7cce99665c 100644 (file)
--- a/lily/arpeggio.cc
+++ b/lily/arpeggio.cc
@@ -8,15 +8,16 @@
 
 #include "arpeggio.hh"
 
+#include "bezier.hh"
+#include "font-interface.hh"
 #include "grob.hh"
+#include "lookup.hh"
 #include "output-def.hh"
-#include "stem.hh"
+#include "pointer-group-interface.hh"
 #include "staff-symbol-referencer.hh"
 #include "staff-symbol.hh"
+#include "stem.hh"
 #include "warn.hh"
-#include "font-interface.hh"
-#include "lookup.hh"
-#include "pointer-group-interface.hh"
 
 Grob *
 Arpeggio::get_common_y (Grob *me)
@@ -136,6 +137,29 @@ Arpeggio::brew_chord_bracket (SCM smob)
   return mol.smobbed_copy ();
 }
 
+MAKE_SCHEME_CALLBACK (Arpeggio, brew_chord_slur, 1);
+SCM
+Arpeggio::brew_chord_slur (SCM smob)
+{
+  Grob *me = unsmob_grob (smob);
+  Interval heads = robust_scm2interval (me->get_property ("positions"),
+                                       Interval())
+    * Staff_symbol_referencer::staff_space (me);
+
+  Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+  Real sp = 1.5 * Staff_symbol_referencer::staff_space (me);
+  Real dy = heads.length ();
+
+  Real height_limit = 1.5;
+  Real ratio = .33;
+  Bezier curve = slur_shape (dy, height_limit, ratio);
+  curve.rotate (M_PI / 2);
+
+  Stencil mol (Lookup::slur (curve, lt, lt));
+  mol.translate_axis (heads[LEFT], Y_AXIS);
+  return mol.smobbed_copy ();
+}
+
 /*
   We have to do a callback, because print () triggers a
   vertical alignment if it is cross-staff.