X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fslash-repeat-engraver.cc;h=dbb55c1b385fead81d12454a018ae40fa0765040;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=456013b67f18fa9d06d6021fa011667b538f19aa;hpb=0a84151a3709fcf51b4b77f0e7e991db1a47eafc;p=lilypond.git

diff --git a/lily/slash-repeat-engraver.cc b/lily/slash-repeat-engraver.cc
index 456013b67f..dbb55c1b38 100644
--- a/lily/slash-repeat-engraver.cc
+++ b/lily/slash-repeat-engraver.cc
@@ -1,149 +1,82 @@
-/*   
-     slash-repeat-engraver.cc --  implement Chord_tremolo_engraver
-  
+/*
+  slash-repeat-engraver.cc -- implement Slash_repeat_engraver
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
 
-#include "engraver.hh"
-#include "repeated-music.hh"
-#include "engraver-group-engraver.hh"
-#include "global-translator.hh"
-#include "warn.hh"
+  (c) 2000--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg
+  <mandolaerik@gmail.com>
+*/
+
+#include "bar-line.hh"
+#include "global-context.hh"
+#include "international.hh"
+#include "item.hh"
 #include "misc.hh"
+#include "repeated-music.hh"
+#include "score-engraver.hh"
 #include "spanner.hh"
-#include "item.hh"
-#include "percent-repeat-iterator.hh"
-#include "bar-line.hh"
+#include "stream-event.hh"
+#include "warn.hh"
 
-#include "score-engraver.hh"
-#include "translator-group.hh"
+#include "translator.icc"
 
 /**
-  This acknowledges repeated music with "percent" style.  It typesets
-  a % sign.  
-
-  TODO:
-
-  - BEAT case: Create items for single beat repeats, i.e. c4 / / /
-
-  - DOUBLE_MEASURE case: attach a % to an appropriate barline.
-  
+   This acknowledges repeated music with "percent" style.  It typesets
+   a slash sign.
 */
 class Slash_repeat_engraver : public Engraver
 {
 public:
-  TRANSLATOR_DECLARATIONS(Slash_repeat_engraver);
+  TRANSLATOR_DECLARATIONS (Slash_repeat_engraver);
 protected:
-  Repeated_music * repeat_;
-
-  /// moment (global time) where beam started.
-  Moment start_mom_;
-  Moment stop_mom_;
-
-  /// location  within measure where beam started.
-  Moment beam_start_location_;
-  Moment next_moment_;
-  Moment body_length_;
-
-  Item * beat_slash_;
-  Item * double_percent_;
+  Stream_event *slash_;
 protected:
-  virtual bool try_music (Music*);
-  virtual void stop_translation_timestep ();
-  virtual void start_translation_timestep ();
-  virtual void process_music ();
+  DECLARE_TRANSLATOR_LISTENER (percent);
+  void process_music ();
 };
 
 Slash_repeat_engraver::Slash_repeat_engraver ()
 {
-  repeat_ =0;
-  beat_slash_ = 0;
+  slash_ = 0;
 }
 
-bool
-Slash_repeat_engraver::try_music (Music * m)
+IMPLEMENT_TRANSLATOR_LISTENER (Slash_repeat_engraver, percent);
+void
+Slash_repeat_engraver::listen_percent (Stream_event *ev)
 {
-  Repeated_music * rp = dynamic_cast<Repeated_music*> (m);
-  if (rp
-      && !repeat_
-      && rp->get_mus_property ("iterator-ctor")
-      == Percent_repeat_iterator::constructor_proc)
-    {
-      body_length_ = rp->body_get_length ();
-      int count =   rp->repeat_count ();
-      
-      Moment now = now_mom ();
-      start_mom_ = now;
-      stop_mom_ = start_mom_ + Moment (count) * body_length_;
-      next_moment_ = start_mom_ + body_length_;
-
-      SCM m = get_property ("measureLength");
-      Moment meas_len;
-      if (Moment *mp = unsmob_moment (m))
-	meas_len = *mp;
-
-      if (body_length_ < meas_len 
-	  && meas_len.main_part_.mod_rat (body_length_.main_part_)
-	  == Moment (Rational (0,0)))
-	{
-	  repeat_ = rp;
-	}
-      else
-	return false;
-      
-      Global_translator *global =top_engraver();
-      for (int i = 0; i < count; i++)  
-	global->add_moment_to_process (next_moment_ + Moment (i) * body_length_);
+  /*todo: separate events for percent and slash */
+  Moment meas_length
+    = robust_scm2moment (get_property ("measureLength"), Moment (0));
   
-      return true;
-    }
-
-  return false;
+  if (get_event_length (ev) < meas_length)
+    ASSIGN_EVENT_ONCE (slash_, ev);
+  
+  /*
+    don't warn if nothing happens: this can happen if there are whole
+    measure repeats.
+   */
 }
 
 void
 Slash_repeat_engraver::process_music ()
 {
-  if (repeat_ && now_mom () == next_moment_)
-    {
-      beat_slash_ = new Item (get_property ("RepeatSlash"));
-      announce_grob(beat_slash_, repeat_->self_scm());
-      next_moment_ = next_moment_ + body_length_;
-
-      top_engraver()->add_moment_to_process (next_moment_);
-    }
-}
-
-
-void
-Slash_repeat_engraver::start_translation_timestep ()
-{
-  if (stop_mom_ == now_mom ())
-    {
-      repeat_ = 0;
-    }
-}
-
-void
-Slash_repeat_engraver::stop_translation_timestep ()
-{
- if (beat_slash_)
+  if (slash_)
     {
-      typeset_grob (beat_slash_);
-      beat_slash_ = 0;
+      make_item ("RepeatSlash", slash_->self_scm ());
+      slash_ = 0;
     }
 }
 
+ADD_TRANSLATOR (Slash_repeat_engraver,
+		/* doc */
+		"Make beat repeats.",
 
+		/* create */
+		"RepeatSlash ",
 
+		/* read */
+		"measureLength ",
 
-ENTER_DESCRIPTION(Slash_repeat_engraver,
-/* descr */       "Make beat repeats.",
-/* creats*/       "RepeatSlash",
-/* accepts */     "repeated-music",
-/* acks  */      "",
-/* reads */       "measureLength currentCommandColumn",
-/* write */       "");
+		/* write */
+		""
+		);