X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbeam-engraver.cc;h=c1b9d54c30142029de847038957799090c62894b;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=53d123454777fd33d071200132ee8e2abb75861a;hpb=8f5cd22af76fcb5c77853a5ede8b94ebef97caef;p=lilypond.git

diff --git a/lily/beam-engraver.cc b/lily/beam-engraver.cc
index 53d1234547..c1b9d54c30 100644
--- a/lily/beam-engraver.cc
+++ b/lily/beam-engraver.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 1998--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "beam.hh"
@@ -27,6 +27,7 @@ class Beam_engraver : public Engraver
 public:
   DECLARE_ACKNOWLEDGER (stem);
   DECLARE_ACKNOWLEDGER (rest);
+
 protected:
   Stream_event *start_ev_;
 
@@ -34,7 +35,7 @@ protected:
   Spanner *beam_;
   Stream_event *prev_start_ev_;
 
-  Stream_event *now_stop_ev_;
+  Stream_event *stop_ev_;
 
   Beaming_pattern *beam_info_;
   Beaming_pattern *finished_beam_info_;
@@ -45,9 +46,9 @@ protected:
   /// moment (global time) where beam started.
   Moment beam_start_mom_;
 
-  bool subdivide_beams_;
-  Moment beat_length_;
-
+  Beaming_options beaming_options_;
+  Beaming_options finished_beaming_options_;
+  
   void typeset_beam ();
   void set_melisma (bool);
 
@@ -90,7 +91,7 @@ Beam_engraver::Beam_engraver ()
   finished_beam_ = 0;
   finished_beam_info_ = 0;
   beam_info_ = 0;
-  now_stop_ev_ = 0;
+  stop_ev_ = 0;
   start_ev_ = 0;
   prev_start_ev_ = 0;
 }
@@ -104,7 +105,7 @@ Beam_engraver::listen_beam (Stream_event *ev)
   if (d == START && valid_start_point ())
     ASSIGN_EVENT_ONCE (start_ev_, ev);
   else if (d == STOP && valid_end_point ())
-    ASSIGN_EVENT_ONCE (now_stop_ev_, ev);
+    ASSIGN_EVENT_ONCE (stop_ev_, ev);
 }
 
 void
@@ -118,9 +119,6 @@ Beam_engraver::set_melisma (bool ml)
 void
 Beam_engraver::process_music ()
 {
-  if (beam_ && !to_boolean (get_property ("allowBeamBreak")))
-    context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
-
   if (start_ev_)
     {
       if (beam_)
@@ -137,9 +135,17 @@ Beam_engraver::process_music ()
       beam_start_location_ = mp;
       beam_start_mom_ = now_mom ();
 
+      beaming_options_.from_context (context ());
       beam_info_ = new Beaming_pattern;
       /* urg, must copy to Auto_beam_engraver too */
     }
+
+  typeset_beam ();
+  if (stop_ev_ && beam_)
+    {
+      announce_end_grob (beam_, stop_ev_->self_scm ());
+      
+    }
 }
 
 void
@@ -149,8 +155,8 @@ Beam_engraver::typeset_beam ()
     {
       if (!finished_beam_->get_bound (RIGHT))
 	finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT));
-	  
-      finished_beam_info_->beamify (context ());
+      
+      finished_beam_info_->beamify (finished_beaming_options_);
       Beam::set_beaming (finished_beam_, finished_beam_info_);
 
       delete finished_beam_info_;
@@ -173,13 +179,13 @@ Beam_engraver::start_translation_timestep ()
 void
 Beam_engraver::stop_translation_timestep ()
 {
-  typeset_beam ();
-  if (now_stop_ev_)
+  if (stop_ev_)
     {
       finished_beam_ = beam_;
       finished_beam_info_ = beam_info_;
-
-      now_stop_ev_ = 0;
+      finished_beaming_options_ = beaming_options_;
+      
+      stop_ev_ = 0;
       beam_ = 0;
       beam_info_ = 0;
       typeset_beam ();
@@ -209,7 +215,7 @@ Beam_engraver::acknowledge_rest (Grob_info info)
   if (beam_
       && !scm_is_number (info.grob ()->get_property_data ("staff-position")))
     {
-      chain_offset_callback (info.grob(),
+      chain_offset_callback (info.grob (),
 			     Beam::rest_collision_callback_proc, Y_AXIS);
     }
 }
@@ -256,7 +262,8 @@ Beam_engraver::acknowledge_stem (Grob_info info)
 		      scm_from_int (durlog));
   Moment stem_location = now - beam_start_mom_ + beam_start_location_;
   beam_info_->add_stem (stem_location,
-			max (durlog- 2, 0));
+			max (durlog- 2, 0),
+			Stem::is_invisible (stem));
   Beam::add_stem (beam_, stem);
 }
 
@@ -265,19 +272,20 @@ ADD_ACKNOWLEDGER (Beam_engraver, rest);
 
 ADD_TRANSLATOR (Beam_engraver,
 		/* doc */
-
-		"Handles Beam events by engraving Beams.  If omitted, then notes will be "
-		"printed with flags instead of beams.",
+		"Handle @code{Beam} events by engraving beams.  If omitted,"
+		" then notes are printed with flags instead of beams.",
 		
-		/* create */ "Beam",
+		/* create */
+		"Beam ",
 
 		/* read */
 		"beamMelismaBusy "
 		"beatLength "
-		"subdivideBeams "
-		,
+		"subdivideBeams ",
+
 		/* write */
-		"forbidBreak");
+		"forbidBreak"
+		);
 
 class Grace_beam_engraver : public Beam_engraver
 {
@@ -321,7 +329,7 @@ Grace_beam_engraver::listen_beam (Stream_event *ev)
   if (d == START && valid_start_point ())
     start_ev_ = ev;
   else if (d == STOP && valid_end_point ())
-    now_stop_ev_ = ev;
+    stop_ev_ = ev;
 }
 
 
@@ -329,19 +337,20 @@ ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
 ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
 
 ADD_TRANSLATOR (Grace_beam_engraver,
-
 		/* doc */
-
-		"Handles Beam events by engraving Beams.  If omitted, then notes will "
-		"be printed with flags instead of beams. Only engraves beams when we "
-		" are at grace points in time. ",
+		"Handle @code{Beam} events by engraving beams.  If omitted,"
+		" then notes are printed with flags instead of beams.  Only"
+		" engraves beams when we are at grace points in time.",
 		
-		/* create */ "Beam",
+		/* create */
+		"Beam ",
+
 		/* read */
 		"beamMelismaBusy "
 		"beatLength "
-		"allowBeamBreak "
-		"subdivideBeams "
-		,
-		/* write */ "");
+		"subdivideBeams ",
+
+		/* write */
+		""
+		);