X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fscript-engraver.cc;h=f393128911d0954a8aec55a7108540a2c23ba206;hb=58bcc84c9480dae1b21bc24d8396b91fe19e0131;hp=d53c47648f418e72eb6610a4a8e95b6dfcb91693;hpb=b0064942493df77833e6e41e05d362850f4874b0;p=lilypond.git

diff --git a/lily/script-engraver.cc b/lily/script-engraver.cc
index d53c47648f..f393128911 100644
--- a/lily/script-engraver.cc
+++ b/lily/script-engraver.cc
@@ -1,181 +1,247 @@
 /*
-  script-engraver.cc -- implement Script_engraver
+  script-engraver.cc -- engrave Scripts: Articulations.
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-*/
+  source file of the GNU LilyPond music typesetter
 
+  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
 
-#include "script.hh"
+#include "context.hh"
+#include "directional-element-interface.hh"
+#include "engraver.hh"
+#include "slur.hh"
+#include "note-column.hh"
+#include "paper-column.hh"
+#include "rhythmic-head.hh"
+#include "script-interface.hh"
 #include "side-position-interface.hh"
-#include "musical-request.hh"
+#include "staff-symbol-referencer.hh"
 #include "stem.hh"
-#include "staff-symbol.hh"
-#include "rhythmic-head.hh"
-#include "dimension-cache.hh"
+#include "warn.hh"
 
-#include "engraver.hh"
+struct Script_tuple
+{
+  Music *event_;
+  Grob *script_;
+  bool follow_into_staff_;
+  Script_tuple ()
+  {
+    follow_into_staff_ = false;
+    event_ = 0;
+    script_ = 0;
+  }
+};
 
-class Script_engraver : public Engraver {
-  Link_array<Script> script_p_arr_;
-  Link_array<Articulation_req> script_req_l_arr_;
+class Script_engraver : public Engraver
+{
+  Array<Script_tuple> scripts_;
+  Spanner *slur_;
 
-public:
-  VIRTUAL_COPY_CONS(Translator);
-  
-  Script_engraver();
 protected:
-  virtual bool do_try_music (Music*);
-  virtual void do_process_music ();
-  virtual void do_pre_move_processing ();
-  virtual void do_post_move_processing ();
-  virtual void acknowledge_element (Score_element_info);
-};
+  virtual bool try_music (Music *);
+  virtual void stop_translation_timestep ();
+  virtual void process_music ();
+  virtual void acknowledge_grob (Grob_info);
 
+public:
+  TRANSLATOR_DECLARATIONS (Script_engraver);
+};
 
-Script_engraver::Script_engraver()
+Script_engraver::Script_engraver ()
 {
-  do_post_move_processing();
+  slur_ = 0;
 }
 
 bool
-Script_engraver::do_try_music (Music *r_l)
+Script_engraver::try_music (Music *m)
 {
-  if (Articulation_req *mr = dynamic_cast <Articulation_req *> (r_l))
+  if (m->is_mus_type ("articulation-event"))
     {
-      for (int i=0; i < script_req_l_arr_.size(); i++) 
-	{
-	  if (script_req_l_arr_[i]->equal_b (mr))
-	    return true;
-	}
-      script_req_l_arr_.push (mr);
+      /* Discard double articulations for part-combining.  */
+      int script_count = scripts_.size ();
+      for (int i = 0; i < script_count; i++)
+	if (ly_c_equal_p (scripts_[i].event_
+			  ->get_property ("articulation-type"),
+			  m->get_property ("articulation-type")))
+	  return true;
+
+      Script_tuple t;
+      t.event_ = m;
+      scripts_.push (t);
       return true;
     }
   return false;
 }
 
 void
-Script_engraver::do_process_music()
+copy_property (Grob *g, SCM sym, SCM alist)
+{
+  if (g->internal_get_property (sym) == SCM_EOL)
+    {
+      SCM entry = scm_assoc (sym, alist);
+      if (scm_is_pair (entry))
+	g->internal_set_property (sym, scm_cdr (entry));
+    }
+}
+
+/* Add the properties, one by one for each Script.  A little memory
+   could be saved by tacking the props onto the Script grob (i.e. make
+   ScriptStaccato , ScriptMarcato, etc. ).
+*/
+void make_script_from_event (Grob *p, bool *follow, Context *tg,
+			     SCM art_type, int index)
 {
-  for (int i=0; i < script_req_l_arr_.size(); i++)
+  SCM alist = tg->get_property ("scriptDefinitions");
+  SCM art = scm_assoc (art_type, alist);
+
+  if (art == SCM_BOOL_F)
+    {
+      /* FIXME: */
+      warning (_ ("Do not know how to interpret articulation: "));
+      warning (_ ("Scheme encoding: "));
+      scm_write (art_type, scm_current_error_port ());
+      return;
+    }
+
+  art = scm_cdr (art);
+
+  SCM follow_scm = scm_assoc (ly_symbol2scm ("follow-into-staff"),
+			      art);
+
+  *follow = scm_is_pair (follow_scm) && to_boolean (scm_cdr (follow_scm));
+  bool priority_found = false;
+
+  for (SCM s = art; scm_is_pair (s); s = scm_cdr (s))
     {
-      Articulation_req* l=script_req_l_arr_[i];
+      SCM sym = scm_caar (s);
+      SCM type = scm_object_property (sym, ly_symbol2scm ("backend-type?"));
+      if (!ly_c_procedure_p (type))
+	continue;
 
-      SCM list = scm_eval (gh_list (ly_symbol2scm ("articulation-to-scriptdef"),
-				    ly_str02scm (l->articulation_str_.ch_C()),
-				    SCM_UNDEFINED));
-      
-      if (list == SCM_BOOL_F)
+      SCM val = scm_cdar (s);
+
+      if (sym == ly_symbol2scm ("script-priority"))
 	{
-	  l->warning (_f ("Don't know how to interpret articulation `%s'",
-			l->articulation_str_.ch_C ()));
-	  continue;
+	  priority_found = true;
+	  /* Make sure they're in order of user input by adding index i.
+	     Don't use the direction in this priority. Smaller means closer
+	     to the head.  */
+	  int prio = scm_to_int (val) + index;
+
+	  val = scm_int2num (prio);
 	}
-      // todo -> use result of articulation-to-scriptdef directly as basic prop list.
-      Script *p =new Script (get_property ("basicScriptProperties"));
-      Side_position_interface stafy (p);
-      
-      
-      list = gh_cdr (list);
-      p->set_elt_property ("molecule",
-			   gh_car (list));
-
-      list = gh_cdr(list);
-      bool follow_staff = gh_scm2bool (gh_car (list));
-      list = gh_cdr(list);
-      int relative_stem_dir = gh_scm2int (gh_car (list));
-      list = gh_cdr(list);
-      int force_dir =gh_scm2int (gh_car (list));
-      list = gh_cdr(list);
-      SCM priority = gh_car (list);
-
-      
-      if (relative_stem_dir)
-	  p->set_elt_property ("side-relative-direction", gh_int2scm (relative_stem_dir));
-      else
-	  stafy.set_direction ((Direction)force_dir);
-
-      if (l->get_direction ())
-	stafy.set_direction (l->get_direction ());
-
-      SCM axisprop = get_property ("scriptHorizontal");
-      bool xaxis = to_boolean (axisprop);
-      if (xaxis)
-	stafy.set_axis (X_AXIS);
-      else
-	stafy.set_axis (Y_AXIS);
-      
-      if (!follow_staff && ! xaxis)
-	p->set_elt_property ("staff-support", SCM_BOOL_T);
-
-      if (!xaxis && follow_staff)
-	stafy.set_quantised (Y_AXIS);
-      
-      p->set_elt_property ("script-priority", priority);
-  
-      script_p_arr_.push (p);
-      
-      announce_element (Score_element_info (p, l));
+      if (p->internal_get_property (sym) == SCM_EOL)
+	p->internal_set_property (sym, val);
     }
+
+  if (!priority_found)
+    {
+      p->set_property ("script-priority",
+		       scm_int2num (index));
+    }
+
+  Side_position_interface::set_axis (p, Y_AXIS);
+
 }
 
 void
-Script_engraver::acknowledge_element (Score_element_info inf)
+Script_engraver::process_music ()
 {
-  bool them_grace = to_boolean (inf.elem_l_->get_elt_property ("grace"));
-  bool us_grace = to_boolean (get_property ("weAreGraceContext"));
+  int script_count = scripts_.size ();
+  for (int i = 0; i < script_count; i++)
+    {
+      Music *m = scripts_[i].event_;
+
+      Grob *p = make_item ("Script", m->self_scm ());
+
+      make_script_from_event (p, &scripts_[i].follow_into_staff_, context (),
+			      m->get_property ("articulation-type"),
+			      i);
+
+      scripts_[i].script_ = p;
+
+      SCM force_dir = m->get_property ("direction");
+      if (is_direction (force_dir) && to_dir (force_dir))
+	p->set_property ("direction", force_dir);
+    }
+}
 
-  if (us_grace != them_grace)
-    return;
-  
-  if (Stem *s = dynamic_cast<Stem*>(inf.elem_l_))
+void
+Script_engraver::acknowledge_grob (Grob_info info)
+{
+  int script_count = scripts_.size ();
+  if (Stem::has_interface (info.grob_))
     {
-      for (int i=0; i < script_p_arr_.size(); i++)
+      for (int i = 0; i < script_count; i++)
 	{
-	  Side_position_interface stafy (script_p_arr_[i]);
-	  stafy.elt_l_->set_elt_property ("direction-source", s->self_scm_);
-	  stafy.add_support (s);
+	  Grob *e = scripts_[i].script_;
+
+	  if (to_dir (e->get_property ("side-relative-direction")))
+	    e->set_property ("direction-source", info.grob_->self_scm ());
+
+	  /* FIXME: add dependency */
+	  e->add_dependency (info.grob_);
+	  Side_position_interface::add_support (e, info.grob_);
 	}
     }
-  else if (Rhythmic_head * rh = dynamic_cast<Rhythmic_head*>(inf.elem_l_))
+  else if (Rhythmic_head::has_interface (info.grob_)
+	   && info.music_cause ())
     {
-      for (int i=0; i < script_p_arr_.size(); i++)
+      for (int i = 0; i < script_count; i++)
 	{
-	  Side_position_interface stafy(script_p_arr_[i]);
-	  
-	  if (!stafy.elt_l_->parent_l (X_AXIS))
+	  Grob *e = scripts_[i].script_;
+
+	  if (Side_position_interface::get_axis (e) == X_AXIS
+	      && !e->get_parent (Y_AXIS))
 	    {
-	      stafy.elt_l_->set_parent (inf.elem_l_, X_AXIS);
+	      e->set_parent (info.grob_, Y_AXIS);
+	      e->add_dependency (info.grob_);
 	    }
-	  if (stafy.get_axis () == X_AXIS
-	      && !stafy.elt_l_->parent_l (Y_AXIS))
-	    stafy.elt_l_->set_parent (rh, Y_AXIS);
-	  
-	  stafy.add_support (rh);
+	  Side_position_interface::add_support (e, info.grob_);
 	}
-    }  
-}
-
-void
-Script_engraver::do_pre_move_processing()
-{
-  for (int i=0; i < script_p_arr_.size(); i++) 
+    }
+  else if (Note_column::has_interface (info.grob_))
     {
-      Script * sc = script_p_arr_[i];
-      if (to_boolean (sc->remove_elt_property ("staff-support")))
+      /* Make note column the parent of the script.  That is not
+	 correct, but due to seconds in a chord, noteheads may be
+	 swapped around horizontally.
+
+	 As the note head to put it on is not known now, postpone this
+	 decision to Script_interface::before_line_breaking ().  */
+      for (int i = 0; i < script_count; i++)
 	{
-	  Side_position_interface (sc).add_staff_support ();
+	  Grob *e = scripts_[i].script_;
+
+	  if (!e->get_parent (X_AXIS)
+	      && Side_position_interface::get_axis (e) == Y_AXIS)
+	    e->set_parent (info.grob_, X_AXIS);
 	}
-      typeset_element (sc);
     }
-  script_p_arr_.clear();
+  else if (Slur::has_interface (info.grob_))
+    slur_ = dynamic_cast<Spanner *> (info.grob_);
 }
 
 void
-Script_engraver::do_post_move_processing()
+Script_engraver::stop_translation_timestep ()
 {
-  script_req_l_arr_.clear();
+  int script_count = scripts_.size ();
+  for (int i = 0; i < script_count; i++)
+    if (scripts_[i].follow_into_staff_)
+      {
+	Grob *sc = scripts_[i].script_;
+	sc->add_offset_callback (Side_position_interface
+				 ::quantised_position_proc, Y_AXIS);
+	sc->set_property ("staff-padding", SCM_EOL);
+      }
+
+  scripts_.clear ();
 }
 
-ADD_THIS_TRANSLATOR(Script_engraver);
-
-
+ADD_TRANSLATOR (Script_engraver,
+		/* descr */ "Handles note scripted articulations.",
+		/* creats*/ "Script",
+		/* accepts */ "script-event articulation-event",
+		/* acks  */ "stem-interface rhythmic-head-interface "
+		"slur-interface note-column-interface",
+		/* reads */ "scriptDefinitions",
+		/* write */ "");