release: 1.3.5

[lilypond.git] / lily / multi-measure-rest-engraver.cc

diff --git a/lily/multi-measure-rest-engraver.cc b/lily/multi-measure-rest-engraver.cc
index 2c93ec04c695259a0dd817921a68c801f36729bd..cd6efa31723b2ed8875264042e9daaeb850e510e 100644 (file)
--- a/lily/multi-measure-rest-engraver.cc
+++ b/lily/multi-measure-rest-engraver.cc
@@ -1,7 +1,8 @@
 /*
   multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
 
-  (c) 1998 Jan Nieuwenhuizen <jan@digicash.com>
+  (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
+       Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 #include "proto.hh"
@@ -9,76 +10,125 @@
 #include "multi-measure-rest.hh"
 #include "multi-measure-rest-engraver.hh"
 #include "score-column.hh"
+#include "engraver-group-engraver.hh"
+#include "timing-translator.hh"
+#include "bar.hh"
+
 
-IMPLEMENT_IS_TYPE_B1 (Multi_measure_rest_engraver, Engraver);
 ADD_THIS_TRANSLATOR (Multi_measure_rest_engraver);
 
 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
 {
-  last_mom_ = 0;
+  start_measure_i_ = 0;
+  rest_moments_[START] =
+    rest_moments_[STOP] =0;
   multi_measure_req_l_ = 0;
+
+  lastrest_p_ =0;
   mmrest_p_ = 0;
 }
 
-bool
-Multi_measure_rest_engraver::do_try_request (Request* req_l)
+void
+Multi_measure_rest_engraver::acknowledge_element (Score_element_info i)
 {
-  if (!req_l->musical () || !req_l->musical ()->multi_measure ())
-    return false;
-
-  multi_measure_req_l_ = req_l->musical ()->multi_measure ();
-  last_mom_ = now_moment () + multi_measure_req_l_->duration_.length ();
-
-  return true;
+  if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
+    {
+      if (mmrest_p_) 
+       mmrest_p_->add_column (c);
+      if (lastrest_p_)
+       lastrest_p_->add_column (c);
+    }
 }
 
-void
-Multi_measure_rest_engraver::do_removal_processing ()
+bool
+Multi_measure_rest_engraver::do_try_music (Music* req_l)
 {
-  if (mmrest_p_)
+  Rhythmic_req *r=0;
+  if (Multi_measure_rest_req *mr = 
+      dynamic_cast<Multi_measure_rest_req *> (req_l))
+    r=mr;
+  else if (Repetitions_req *rr = 
+          dynamic_cast<Repetitions_req *> (req_l))
+    r=rr;
+  if (r)
     {
-      typeset_element (mmrest_p_);
-      mmrest_p_ = 0;
+      if (multi_measure_req_l_)
+       if (!multi_measure_req_l_->equal_b (r)
+           || rest_moments_[START] != now_mom ())
+         return false;
+      
+      multi_measure_req_l_ = r;
+      rest_moments_[START] = now_mom ();
+      
+      rest_moments_[STOP] = rest_moments_[START] +
+       multi_measure_req_l_->duration_.length_mom ();
+      return true;
     }
+  return false;
 }
 
 void
 Multi_measure_rest_engraver::do_process_requests ()
 {
-  if (mmrest_p_ || !multi_measure_req_l_)
-    return;
-
-  mmrest_p_ = new Multi_measure_rest;
+  if (multi_measure_req_l_ && !mmrest_p_)
+    {
 
-  Scalar prop = get_property ("part");
-  if (prop.isnum_b ()) 
-    part_b_ = prop.to_bool ();
+      Translator * tr = daddy_grav_l()->get_simple_translator ("Timing_engraver");     // ugh
+      Timing_translator * time = dynamic_cast<Timing_translator*> (tr);
 
-//  if (!part_b_)
-//    return;
+      mmrest_p_ = new Multi_measure_rest;
+      if(dynamic_cast<Repetitions_req *> (multi_measure_req_l_))
+       mmrest_p_->set_elt_property ("alt-symbol", 
+                                    ly_str02scm ("scripts-repeatsign"));
+      announce_element (Score_element_info (mmrest_p_, multi_measure_req_l_));
+      start_measure_i_ = time->bars_i ();
+    }
+}
 
-  int measures_i = (int)multi_measure_req_l_->duration_.plet_.iso_i_;
-  if (part_b_)
-    mmrest_p_->measures_i_ = measures_i;
+void
+Multi_measure_rest_engraver::do_pre_move_processing ()
+{
+  Moment now (now_mom ());
+  Translator * tr = daddy_grav_l()->get_simple_translator ("Timing_engraver"); // ugh
+  Timing_translator * time  = dynamic_cast<Timing_translator*> (tr);
 
-  announce_element (Score_elem_info (mmrest_p_, multi_measure_req_l_));
 
-  multi_measure_req_l_ = 0;
+  if (mmrest_p_ && (now >= rest_moments_[START]) 
+    && !time->measure_position ()
+    && (mmrest_p_->column_arr_.size () >= 2))
+    {
+      typeset_element (mmrest_p_);
+      /*
+       must keep mmrest_p_ around to set measures_i_
+       */
+    }
+  if (lastrest_p_)
+    {
+      typeset_element (lastrest_p_);
+      lastrest_p_ = 0;
+    }
 }
 
 void
-Multi_measure_rest_engraver::do_pre_move_processing ()
+Multi_measure_rest_engraver::do_post_move_processing ()
 {
-  if (!mmrest_p_)
-    return;
+  Translator * tr = daddy_grav_l()->get_simple_translator ("Timing_engraver"); // ugh
+  Timing_translator * time  = dynamic_cast<Timing_translator*> (tr);
 
-  typeset_element (mmrest_p_);
-  mmrest_p_ = 0;
+  Moment now (now_mom ());
 
-  if (part_b_)
-    return;
+  if (mmrest_p_ && !time->measure_position ())
+    {
+      lastrest_p_ = mmrest_p_;
+      lastrest_p_->measures_i_ = time->bars_i () - start_measure_i_;
+      mmrest_p_ = 0;
+    }
 
-  if (last_mom_ <= now_moment ())
-    multi_measure_req_l_ = 0;
+  if (now >= rest_moments_[STOP])
+    {
+      multi_measure_req_l_ = 0;
+      mmrest_p_ = 0;
+    }
 }
 
+