release: 0.1.13

[lilypond.git] / lily / spanner.cc

diff --git a/lily/spanner.cc b/lily/spanner.cc
index 87a01078aa675e08e805cd2624610e63960ef980..07eb278b84cde5bbf4f84d33855bea833d24b1d8 100644 (file)
--- a/lily/spanner.cc
+++ b/lily/spanner.cc
@@ -1,45 +1,179 @@
+/*
+  spanner.cc -- implement Spanner
+
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1996,1997 Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
 #include "debug.hh"
 #include "spanner.hh"
 #include "p-col.hh"
+#include "p-score.hh"
 
 
-
-IMPLEMENT_STATIC_NAME(Spanner);
+IMPLEMENT_IS_TYPE_B1(Spanner,Score_elem);
 
 void
-Spanner::do_print()const
+Spanner::do_print() const
 {
-    mtor << " (unknown) ";
+#ifndef NPRINT
+  DOUT << "Between col ";
+  if (broken_into_l_arr_.size())
+    DOUT << "with broken pieces\n";
+#endif
 }
 
-Spanner*
-Spanner::broken_at(PCol*c1, PCol *c2)const
+void
+Spanner::break_into_pieces ()
 {
-    Spanner *span_p = do_break_at(c1,c2);
+  if (broken_into_l_arr_.size())
+    return; 
+        
+  Item * left = spanned_drul_[LEFT];
+  Item * right = spanned_drul_[RIGHT];
+  
+  
+  Link_array<Item> break_cols = pscore_l_->broken_col_range (left,right);
+  Link_array<Spanner> broken_into_l_arr;
+
+  break_cols.insert (left,0);
+  break_cols.push (right);
 
-    for (int i=0; i < dependants.size(); i++) {
-       dependants[i]->substitute_dependency((Staff_elem*)this, span_p); 
+  for (int i=1; i < break_cols.size(); i++) 
+    {
+      Spanner* span_p = clone()->spanner ();
+      left = break_cols[i-1];
+      right = break_cols[i];
+      if (!right->line_l())
+       right = right->find_prebroken_piece(-1);
+      if (!left->line_l())
+       left = left->find_prebroken_piece(1);
+
+            assert (left&&right && left->line_l() == right->line_l());
+
+      span_p->set_bounds(LEFT,left);
+      span_p->set_bounds(RIGHT,right);
+       
+      pscore_l_->typeset_broken_spanner (span_p);
+      broken_into_l_arr.push (span_p);
     }
+   
+  broken_into_l_arr_ = broken_into_l_arr;
+}
+
+void
+Spanner::set_my_columns()
+{
+  Direction i = (Direction)1;
+  do 
+    {
+      if (!spanned_drul_[i]->line_l())
+       set_bounds(i,spanned_drul_[i]->find_prebroken_piece(-i));
+    } 
+  while ((i*=-1) != 1);
+}       
+
+
+void
+Spanner::set_bounds(Direction d, Item*i)
+{
     
-    span_p->left = c1;
-    span_p->right = c2;
-    
-    return span_p;
+  if (spanned_drul_[d])
+    spanned_drul_[d]->attached_span_l_arr_.substitute(this,0);
+  
+  spanned_drul_[d] =i;
+  if (i)
+    i->attached_span_l_arr_.push(this);
+
+  assert (!spanned_drul_[d] ||
+         spanned_drul_[Direction(-d)] != spanned_drul_[d]);
+
 }
 
+void
+Spanner::do_break_processing()
+{
+  if (!line_l())
+    {
+      break_into_pieces ();
+      for (int i=0; i < broken_into_l_arr_.size(); i++)
+       broken_into_l_arr_[i]->handle_broken_dependencies();
+    }
+  else 
+    {
+      handle_broken_dependencies();
+    }
+}
+
+
 Spanner::Spanner()
 {
-    left = right = 0;
+  spanned_drul_[LEFT]=0;
+  spanned_drul_[RIGHT]=0;
 }
 
+String
+Spanner::do_TeX_output_str () const
+{
+  Offset left_off (spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), 0);
+  return make_TeX_string (absolute_offset() + left_off);
+}
 
 Interval
-Spanner::width()const
+Spanner::do_width() const
 {
-    Real r = right->hpos;
-    Real l = left->hpos;
-    assert(*left < *right);
-    assert(r>=l);
+  Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
+  Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
+  assert (r>=l);
        
-    return Interval(0, r-l);
+  return Interval (0, r-l);
+}
+
+Line_of_score *
+Spanner::line_l() const
+{
+  if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
+    return 0;
+  if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
+    return 0;
+  return spanned_drul_[LEFT]->line_l();
+}
+
+
+Spanner*
+Spanner::find_broken_piece (Line_of_score*l) const
+{
+  for (int i=0; i < broken_into_l_arr_.size(); i++)
+    if (broken_into_l_arr_[i]->line_l() == l)
+      return broken_into_l_arr_[i];
+  return 0;                               
+         
+}
+
+bool
+Spanner::broken_b() const
+{
+  return broken_into_l_arr_.size();
+}
+
+void
+Spanner::do_unlink() 
+{
+  if (spanned_drul_[LEFT]) 
+    {
+      spanned_drul_[LEFT]->attached_span_l_arr_.substitute (this,0);
+      spanned_drul_[LEFT] =0;
+    }
+  if (spanned_drul_[RIGHT]) 
+    {
+      spanned_drul_[RIGHT]->attached_span_l_arr_.substitute (this,0);
+      spanned_drul_[RIGHT] = 0;
+    }
+}
+
+void
+Spanner::do_junk_links()
+{
+  spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
 }