X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fslash-repeat-engraver.cc;h=aa80c2e2e544afc7e69330a5e10a09ace6ea37d1;hb=77267b700c377fd170abcbf4863728937038eb5e;hp=7020be066f3144ff389110c8fdb59bbf29f94742;hpb=14d74ac262744d16fc753ee41042d32860d58633;p=lilypond.git

diff --git a/lily/slash-repeat-engraver.cc b/lily/slash-repeat-engraver.cc
index 7020be066f..aa80c2e2e5 100644
--- a/lily/slash-repeat-engraver.cc
+++ b/lily/slash-repeat-engraver.cc
@@ -1,140 +1,87 @@
-/*   
-     slash-repeat-engraver.cc --  implement Chord_tremolo_engraver
-  
-  source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+/*
+  This file is part of LilyPond, the GNU music typesetter.
 
-#include "repeated-music.hh"
-#include "global-context.hh"
-#include "warn.hh"
-#include "misc.hh"
-#include "spanner.hh"
-#include "item.hh"
-#include "percent-repeat-iterator.hh"
-#include "bar-line.hh"
-#include "score-engraver.hh"
+  Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg
+  <mandolaerik@gmail.com>
 
-/**
-  This acknowledges repeated music with "percent" style.  It typesets
-  a % sign.  
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
 
-  TODO:
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
 
-  - BEAT case: Create items for single beat repeats, i.e. c4 / / /
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
-  - DOUBLE_MEASURE case: attach a % to an appropriate barline.
-  
+#include "item.hh"
+#include "engraver.hh"
+#include "stream-event.hh"
+
+#include "translator.icc"
+
+/*
+  This acknowledges repeated music with "percent" style.  It typesets
+  a slash sign or double percent sign.
 */
 class Slash_repeat_engraver : public Engraver
 {
 public:
   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 ();
+  void listen_repeat_slash (Stream_event *);
+  void process_music ();
 };
 
-Slash_repeat_engraver::Slash_repeat_engraver ()
+Slash_repeat_engraver::Slash_repeat_engraver (Context *c)
+  : Engraver (c)
 {
-  repeat_ = 0;
-  beat_slash_ = 0;
-}
-
-bool
-Slash_repeat_engraver::try_music (Music * m)
-{
-  Repeated_music * rp = dynamic_cast<Repeated_music*> (m);
-  if (rp
-      && !repeat_
-      && rp->get_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_context *global = get_global_context ();
-      for (int i = 0; i < count; i++)  
-	global->add_moment_to_process (next_moment_ + Moment (i) * body_length_);
-  
-      return true;
-    }
-
-  return false;
+  slash_ = 0;
 }
 
 void
-Slash_repeat_engraver::process_music ()
+Slash_repeat_engraver::listen_repeat_slash (Stream_event *ev)
 {
-  if (repeat_ && now_mom () == next_moment_)
-    {
-      beat_slash_ = make_item ("RepeatSlash", repeat_->self_scm ());
-      next_moment_ = next_moment_ + body_length_;
-
-      get_global_context ()->add_moment_to_process (next_moment_);
-    }
+  ASSIGN_EVENT_ONCE (slash_, ev);
 }
 
-
 void
-Slash_repeat_engraver::start_translation_timestep ()
+Slash_repeat_engraver::process_music ()
 {
-  if (stop_mom_ == now_mom ())
+  if (slash_)
     {
-      repeat_ = 0;
+      SCM count = slash_->get_property ("slash-count");
+      if (scm_to_int (count) == 0)
+        make_item ("DoubleRepeatSlash", slash_->self_scm ());
+      else
+        make_item ("RepeatSlash", slash_->self_scm ());
+      slash_ = 0;
     }
 }
 
 void
-Slash_repeat_engraver::stop_translation_timestep ()
+Slash_repeat_engraver::boot ()
 {
-  beat_slash_ = 0;
+  ADD_LISTENER (Slash_repeat_engraver, repeat_slash);
 }
 
+ADD_TRANSLATOR (Slash_repeat_engraver,
+                /* doc */
+                "Make beat repeats.",
 
+                /* create */
+                "DoubleRepeatSlash "
+                "RepeatSlash ",
 
+                /* read */
+                "",
 
-ADD_TRANSLATOR (Slash_repeat_engraver,
-/* descr */       "Make beat repeats.",
-/* creats*/       "RepeatSlash",
-/* accepts */     "repeated-music",
-/* acks  */      "",
-/* reads */       "measureLength",
-/* write */       "");
+                /* write */
+                ""
+               );