Doc-es: various updates.

[lilypond.git] / lily / beam-engraver.cc

diff --git a/lily/beam-engraver.cc b/lily/beam-engraver.cc
index 846e4a245c6d772cb7ec5097fbfe80a626bf33a0..f252eea5e2a1037c715ac72ef3aaf700bea8a0c0 100644 (file)
--- a/lily/beam-engraver.cc
+++ b/lily/beam-engraver.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1998--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -38,8 +38,9 @@
 class Beam_engraver : public Engraver
 {
 public:
-  DECLARE_ACKNOWLEDGER (stem);
-  DECLARE_ACKNOWLEDGER (rest);
+  void acknowledge_stem (Grob_info);
+  void acknowledge_rest (Grob_info);
+  void listen_beam (Stream_event *);
 
 protected:
   Stream_event *start_ev_;
@@ -77,7 +78,6 @@ protected:
   virtual bool valid_start_point ();
   virtual bool valid_end_point ();
 
-  DECLARE_TRANSLATOR_LISTENER (beam);
 public:
   TRANSLATOR_DECLARATIONS (Beam_engraver);
 };
@@ -100,7 +100,8 @@ Beam_engraver::valid_end_point ()
   return valid_start_point ();
 }
 
-Beam_engraver::Beam_engraver ()
+Beam_engraver::Beam_engraver (Context *c)
+  : Engraver (c)
 {
   beam_ = 0;
   finished_beam_ = 0;
@@ -112,7 +113,6 @@ Beam_engraver::Beam_engraver ()
   prev_start_ev_ = 0;
 }
 
-IMPLEMENT_TRANSLATOR_LISTENER (Beam_engraver, beam);
 void
 Beam_engraver::listen_beam (Stream_event *ev)
 {
@@ -248,7 +248,7 @@ Beam_engraver::acknowledge_rest (Grob_info info)
   if (beam_
       && !scm_is_number (info.grob ()->get_property_data ("staff-position")))
     chain_offset_callback (info.grob (),
-                           ly_make_unpure_pure_container
+                           Unpure_pure_container::make_smob
                              (Beam::rest_collision_callback_proc,
                               Beam::pure_rest_collision_callback_proc),
                            Y_AXIS);
@@ -285,9 +285,9 @@ Beam_engraver::acknowledge_stem (Grob_info info)
 
   last_stem_added_at_ = now;
 
-  Duration *stem_duration = unsmob_duration (ev->get_property ("duration"));
+  Duration *stem_duration = unsmob<Duration> (ev->get_property ("duration"));
   int durlog = stem_duration->duration_log ();
-  //int durlog = unsmob_duration (ev->get_property ("duration"))->duration_log ();
+  //int durlog = unsmob<Duration> (ev->get_property ("duration"))->duration_log ();
   if (durlog <= 2)
     {
       ev->origin ()->warning (_ ("stem does not fit in beam"));
@@ -308,12 +308,18 @@ Beam_engraver::acknowledge_stem (Grob_info info)
                         max (durlog - 2, 0),
                         Stem::is_invisible (stem),
                         stem_duration->factor (),
-                        (stem->get_property ("tuplet-start") == SCM_BOOL_T));
+                        (to_boolean (stem->get_property ("tuplet-start"))));
   Beam::add_stem (beam_, stem);
 }
 
-ADD_ACKNOWLEDGER (Beam_engraver, stem);
-ADD_ACKNOWLEDGER (Beam_engraver, rest);
+
+void
+Beam_engraver::boot ()
+{
+  ADD_LISTENER (Beam_engraver, beam);
+  ADD_ACKNOWLEDGER (Beam_engraver, stem);
+  ADD_ACKNOWLEDGER (Beam_engraver, rest);
+}
 
 ADD_TRANSLATOR (Beam_engraver,
                 /* doc */
@@ -337,15 +343,15 @@ class Grace_beam_engraver : public Beam_engraver
 {
 public:
   TRANSLATOR_DECLARATIONS (Grace_beam_engraver);
-
-  DECLARE_TRANSLATOR_LISTENER (beam);
+  TRANSLATOR_INHERIT (Beam_engraver);
 
 protected:
   virtual bool valid_start_point ();
   virtual bool valid_end_point ();
 };
 
-Grace_beam_engraver::Grace_beam_engraver ()
+Grace_beam_engraver::Grace_beam_engraver (Context *c)
+  : Beam_engraver (c)
 {
 }
 
@@ -363,24 +369,14 @@ Grace_beam_engraver::valid_end_point ()
   return beam_ && valid_start_point ();
 }
 
-/*
-  Ugh, C&P code.
- */
-IMPLEMENT_TRANSLATOR_LISTENER (Grace_beam_engraver, beam);
 void
-Grace_beam_engraver::listen_beam (Stream_event *ev)
+Grace_beam_engraver::boot ()
 {
-  Direction d = to_dir (ev->get_property ("span-direction"));
-
-  if (d == START && valid_start_point ())
-    start_ev_ = ev;
-  else if (d == STOP && valid_end_point ())
-    stop_ev_ = ev;
+  ADD_LISTENER (Grace_beam_engraver, beam);
+  ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
+  ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
 }
 
-ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
-ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
-
 ADD_TRANSLATOR (Grace_beam_engraver,
                 /* doc */
                 "Handle @code{Beam} events by engraving beams.  If omitted,"