Merge branch 'master' of ssh+git://hanwen@git.sv.gnu.org/srv/git/lilypond

[lilypond.git] / lily / stem.cc

diff --git a/lily/stem.cc b/lily/stem.cc
index 857dfb7d49fbbc37aceed0421697de11b9806566..862163fad9785987c6414eb58348998e557016a3 100644 (file)
--- a/lily/stem.cc
+++ b/lily/stem.cc
@@ -239,6 +239,10 @@ Stem::pure_height (SCM smob, SCM start, SCM end)
 
   if (!is_normal_stem (me))
     return ly_interval2scm (iv);
+
+  /* if we are part of a cross-staff beam, return empty */
+  if (get_beam (me) && Beam::is_cross_staff (get_beam (me)))
+    return ly_interval2scm (iv);
   
   Real ss = Staff_symbol_referencer::staff_space (me);
   Real len = scm_to_double (calc_length (smob)) * ss / 2;
@@ -402,7 +406,7 @@ Stem::duration_log (Grob *me)
   return (scm_is_number (s)) ? scm_to_int (s) : 2;
 }
 
-MAKE_SCHEME_CALLBACK(Stem, calc_positioning_done, 1);
+MAKE_SCHEME_CALLBACK (Stem, calc_positioning_done, 1);
 SCM
 Stem::calc_positioning_done (SCM smob)
 {
@@ -508,7 +512,7 @@ Stem::calc_positioning_done (SCM smob)
   return SCM_BOOL_T;
 }
 
-MAKE_SCHEME_CALLBACK(Stem, calc_direction, 1);
+MAKE_SCHEME_CALLBACK (Stem, calc_direction, 1);
 SCM
 Stem::calc_direction (SCM smob)
 {
@@ -531,7 +535,7 @@ Stem::calc_direction (SCM smob)
   return scm_from_int (dir);
 }
 
-MAKE_SCHEME_CALLBACK(Stem, calc_default_direction, 1);
+MAKE_SCHEME_CALLBACK (Stem, calc_default_direction, 1);
 SCM
 Stem::calc_default_direction (SCM smob)
 {
@@ -570,11 +574,11 @@ Stem::height (SCM smob)
     }
 
   /*
-    Can't get_stencil(), since that would cache stencils too early.
+    Can't get_stencil (), since that would cache stencils too early.
     This causes problems with beams.
    */
   Stencil *stencil = unsmob_stencil (print (smob));
-  Interval iv = stencil ? stencil->extent (Y_AXIS) : Interval();
+  Interval iv = stencil ? stencil->extent (Y_AXIS) : Interval ();
   if (beam)
     {
       if (dir == CENTER)
@@ -857,7 +861,7 @@ Stem::get_stem_info (Grob *me)
   return si;
 }
 
-MAKE_SCHEME_CALLBACK(Stem, calc_stem_info, 1);
+MAKE_SCHEME_CALLBACK (Stem, calc_stem_info, 1);
 SCM
 Stem::calc_stem_info (SCM smob)
 {
@@ -1001,6 +1005,20 @@ Stem::beam_multiplicity (Grob *stem)
   return le;
 }
 
+bool
+Stem::is_cross_staff (Grob *stem)
+{
+  Grob *beam = unsmob_grob (stem->get_object ("beam"));
+  return beam && Beam::is_cross_staff (beam);
+}
+
+MAKE_SCHEME_CALLBACK (Stem, cross_staff, 1)
+SCM
+Stem::cross_staff (SCM smob)
+{
+  return scm_from_bool (is_cross_staff (unsmob_grob (smob)));
+}
+
 /* FIXME:  Too many properties  */
 ADD_INTERFACE (Stem,
               "The stem represent the graphical stem.  "