]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/percent-repeat-engraver.cc
Fix some bugs in the dynamic engraver and PostScript backend
[lilypond.git] / lily / percent-repeat-engraver.cc
index 837c82ce189129a8f31a04a8a433666e5eb197b5..a979a2e743914f91bed6371c3fd3319e420ab102 100644 (file)
-/*   
-  new-chord-tremolo-engraver.cc --  implement Chord_tremolo_engraver
-  
+/*
+  new-chord-tremolo-engraver.cc -- implement Chord_tremolo_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"
-#include "misc.hh"
-#include "spanner.hh"
-#include "item.hh"
-#include "percent-repeat-iterator.hh"
-#include "bar-line.hh"
+  (c) 2000--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg <mandolaerik@gmail.com>
+*/
 
-#include "score-engraver.hh"
-#include "translator-group.hh"
 
-/**
-  This acknowledges repeated music with "percent" style.  It typesets
-  a % sign.  
+#include "score-engraver.hh"
 
-  TODO:
+#include "bar-line.hh"
+#include "global-context.hh"
+#include "international.hh"
+#include "item.hh"
+#include "misc.hh"
+#include "percent-repeat-iterator.hh"
+#include "repeated-music.hh"
+#include "score-context.hh"
+#include "side-position-interface.hh"
+#include "spanner.hh"
+#include "warn.hh"
 
-  - BEAT case: Create items for single beat repeats, i.e. c4 / / /
+#include "translator.icc"
 
-  - DOUBLE_MEASURE case: attach a % to an appropriate barline.
-  
+/*
+* TODO: Create separate Double_percent_repeat_engraver? 
+* Or, at least move double percent handling to Slash_repeat_engraver
 */
+
 class Percent_repeat_engraver : public Engraver
 {
   void typeset_perc ();
 public:
-  TRANSLATOR_DECLARATIONS(Percent_repeat_engraver);
+  TRANSLATOR_DECLARATIONS (Percent_repeat_engraver);
+  
 protected:
-  Repeated_music * repeat_;
+  Music *percent_event_;
 
-  /// moment (global time) where beam started.
-  Moment start_mom_;
+  /// moment (global time) where percent started.
   Moment stop_mom_;
+  Moment start_mom_;
 
-  /// location  within measure where beam started.
-  Moment beam_start_location_;
-  Moment next_moment_;
-  Moment body_length_;
+  enum Repeat_sign_type
+    {
+      UNKNOWN,
+      MEASURE,
+      DOUBLE_MEASURE,
+    };
+  Repeat_sign_type repeat_sign_type_;
 
-  enum {
-    UNKNOWN,
-    MEASURE,
-    DOUBLE_MEASURE,
-  } repeat_sign_type_ ;
+  Spanner *percent_;
+  Spanner *percent_counter_;
 
-  Item * double_percent_;
-  Spanner * perc_;
-  Spanner * finished_perc_;
 protected:
   virtual void finalize ();
-  virtual bool try_music (Music*);
-  virtual void stop_translation_timestep ();
-  virtual void start_translation_timestep ();
-  virtual void process_music ();
+  virtual bool try_music (Music *);
+
+  void stop_translation_timestep ();
+  void start_translation_timestep ();
+  void process_music ();
 };
 
 Percent_repeat_engraver::Percent_repeat_engraver ()
 {
-  perc_  = 0;
-  finished_perc_ = 0;
-  repeat_ =0;
+  percent_ = 0;
+  percent_counter_ = 0;
 
-  double_percent_ = 0;
+  percent_event_ = 0;
 }
 
 bool
-Percent_repeat_engraver::try_music (Music * m)
+Percent_repeat_engraver::try_music (Music *m)
 {
-  Repeated_music * rp = dynamic_cast<Repeated_music*> (m);
-  if (rp
-      && rp->get_mus_property ("iterator-ctor")
-         == Percent_repeat_iterator::constructor_proc
-      && !repeat_)
+  if (m->is_mus_type ("percent-event")
+      && !percent_event_)
     {
-      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 (unsmob_moment (m))
-       meas_len = *unsmob_moment (m);
-
-      if (meas_len == body_length_)
+      Moment body_length = m->get_length ();
+      Moment meas_len (robust_scm2moment (get_property ("measureLength"),
+                                         Moment (1)));
+
+      if (meas_len == body_length)
+      {
        repeat_sign_type_ = MEASURE;
-      else if (Moment (2)* meas_len == body_length_)
-       {
-         repeat_sign_type_ = DOUBLE_MEASURE;
-         next_moment_ += meas_len ;
-       }
+       start_mom_ = now_mom ();
+       stop_mom_ = now_mom () + body_length;
+       get_global_context ()->add_moment_to_process (stop_mom_);
+      }
+      else if (Moment (2) * meas_len == body_length)
+      {
+       repeat_sign_type_ = DOUBLE_MEASURE;
+       start_mom_ = now_mom () + meas_len;
+       stop_mom_ = now_mom () + body_length; /* never used */
+       get_global_context ()->add_moment_to_process (start_mom_);
+      }
       else
-       {
-         warning (_ ("Don't know how to handle a percent repeat of this length."));
-         return false;
-       }
+       return false;
 
-      repeat_ = rp;
+      percent_event_ = m;
 
-      
-      Global_translator *global =top_engraver();
-      for (int i = 0; i < count; i++)  
-       global->add_moment_to_process (next_moment_ + Moment (i) * body_length_);
-  
       return true;
     }
 
@@ -126,96 +107,125 @@ Percent_repeat_engraver::try_music (Music * m)
 void
 Percent_repeat_engraver::process_music ()
 {
-  if (repeat_ && now_mom () == next_moment_)
+  if (percent_event_ && now_mom ().main_part_ == start_mom_.main_part_)
     {
       if (repeat_sign_type_ == MEASURE)
        {
-         finished_perc_ = perc_;
-         typeset_perc ();
-         perc_ = make_spanner ("PercentRepeat");
-         SCM col =get_property ("currentCommandColumn");
-         perc_->set_bound (LEFT, unsmob_grob (col));
-         announce_grob(perc_, repeat_->self_scm());
+         if (percent_)
+           typeset_perc ();
+         percent_ = make_spanner ("PercentRepeat", percent_event_->self_scm ());
+
+         Grob *col = unsmob_grob (get_property ("currentCommandColumn"));
+         percent_->set_bound (LEFT, col);
+
+         SCM count = percent_event_->get_property ("repeat-count");
+          if (count != SCM_EOL && to_boolean (get_property ("countPercentRepeats")))
+           {
+             percent_counter_
+               = make_spanner ("PercentRepeatCounter", percent_event_->self_scm ());
+
+             SCM text = scm_number_to_string (count, scm_from_int (10));
+             percent_counter_->set_property ("text", text);
+             percent_counter_->set_bound (LEFT, col);
+             Side_position_interface::add_support (percent_counter_,
+                                                   percent_);
+             percent_counter_->set_parent (percent_, Y_AXIS);
+           }
+         else
+           percent_counter_ = 0;
        }
       else if (repeat_sign_type_ == DOUBLE_MEASURE)
        {
-         double_percent_ = make_item ("DoublePercentRepeat");
-         announce_grob(double_percent_, repeat_->self_scm());
-
-      /*
-       forbid breaks on a % line. Should forbid all breaks, really.
-       */
-
-           top_engraver()->forbid_breaks ();   // guh. Use properties!      
+         Item *double_percent = make_item ("DoublePercentRepeat", percent_event_->self_scm ());
+
+         SCM count = percent_event_->get_property ("repeat-count");
+         if (count != SCM_EOL
+             && to_boolean (get_property ("countPercentRepeats")))
+           {
+             Item *double_percent_counter = make_item ("DoublePercentRepeatCounter",
+                                                       percent_event_->self_scm());
+
+             SCM text = scm_number_to_string (count,
+                                              scm_from_int (10));
+             double_percent_counter->set_property ("text", text);
+
+             Side_position_interface::add_support (double_percent_counter,
+                                                   double_percent);
+             double_percent_counter->set_parent (double_percent, Y_AXIS);
+             double_percent_counter->set_parent (double_percent, X_AXIS);
+           }
+         
+         /* forbid breaks on a % line. Should forbid all breaks, really. */
+         context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
+
+         /* No more processing needed. */
+         repeat_sign_type_ = UNKNOWN;
        }
-      next_moment_ = next_moment_ + body_length_;
-
-      top_engraver()->add_moment_to_process (next_moment_);
     }
 }
 
 void
 Percent_repeat_engraver::finalize ()
 {
-  typeset_perc ();
-  if (perc_)
+  if (percent_)
     {
-      repeat_->origin ()->warning (_ ("unterminated percent repeat"));
-      perc_->suicide ();
+      percent_event_->origin ()->warning (_ ("unterminated percent repeat"));
+      percent_->suicide ();
+      percent_counter_->suicide();
     }
 }
 
 void
 Percent_repeat_engraver::typeset_perc ()
 {
-  if (finished_perc_)
+  if (percent_)
     {
-      SCM col =get_property ("currentCommandColumn");
-      finished_perc_->set_bound (RIGHT, unsmob_grob (col));
-      typeset_grob (finished_perc_);
-      finished_perc_ = 0;
-    }
+      Grob *col = unsmob_grob (get_property ("currentCommandColumn"));
 
-  if (double_percent_)
-    {
-      typeset_grob (double_percent_);
-      double_percent_ = 0;
+      percent_->set_bound (RIGHT, col);
+      percent_ = 0;
+
+      if (percent_counter_)
+       percent_counter_->set_bound (RIGHT, col);
+      percent_counter_ = 0;
     }
 }
 
-
-
-
 void
 Percent_repeat_engraver::start_translation_timestep ()
 {
-  if (stop_mom_ == now_mom ())
+  if (stop_mom_.main_part_ == now_mom ().main_part_)
     {
-      if (perc_)
-       {
-         finished_perc_ = perc_;
-         typeset_perc ();
-       }
-      repeat_ = 0;
-      perc_ = 0;
+      if (percent_)
+       typeset_perc ();
+      percent_event_ = 0;
       repeat_sign_type_ = UNKNOWN;
     }
 }
 
-
 void
 Percent_repeat_engraver::stop_translation_timestep ()
 {
-  typeset_perc ();
 }
 
-
-
-
-ENTER_DESCRIPTION(Percent_repeat_engraver,
-/* descr */       "Make whole bar and double bar repeats.",
-/* creats*/       "PercentRepeat DoublePercentRepeat",
-/* accepts */     "repeated-music",
-/* acks  */      "",
-/* reads */       "measureLength currentCommandColumn",
-/* write */       "");
+ADD_TRANSLATOR (Percent_repeat_engraver,
+               /* doc */
+               "Make whole bar and double bar repeats.",
+               
+               /* create */
+               "DoublePercentRepeat "
+               "DoublePercentRepeatCounter "
+               "PercentRepeat "
+               "PercentRepeatCounter ",
+               
+               /* accept */
+               "percent-event ",
+
+               /* read */
+               "countPercentRepeats "
+               "currentCommandColumn "
+               "measureLength ",
+
+               /* write */
+               "forbidBreak "
+               );