partial: 1.0.1.jcn

[lilypond.git] / lily / item.cc

diff --git a/lily/item.cc b/lily/item.cc
index f1de7827e8951b9fd35bd7cc9392bb5710336cee..20f52f0553021944e697561bbf55f47b864dea6d 100644 (file)
--- a/lily/item.cc
+++ b/lily/item.cc
@@ -3,107 +3,166 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+  (c)  1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
 */
+
 #include "p-score.hh"
 #include "debug.hh"
 #include "item.hh"
 #include "p-col.hh"
+// #include "elem-group.hh"
+#include "spanner.hh"
 
 Item::Item()
 {
-    pcol_l_ = 0;
-
-    broken_to_a_[0]
-       = broken_to_a_[1]=0;
+  break_priority_i_ = 0;
+  breakable_b_ = false;
+  break_status_i_ = CENTER;
+  broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0;
 }
 
-IMPLEMENT_STATIC_NAME(Item);
 IMPLEMENT_IS_TYPE_B1(Item, Score_elem);
 
 void
 Item::do_print() const
 {
 #ifndef NPRINT
-    mtor << "(unknown)";
+  DOUT << "breakable_b_: " << breakable_b_ << 
+    " break_status_i_: " <<break_status_i_;
 #endif
 }
 
 
 Real 
-Item::hpos_f()const
+Item::hpos_f() const
 {
-    return pcol_l_->hpos + offset().x;
+  return absolute_coordinate (X_AXIS);
 }
 
-
-
 Line_of_score *
-Item::line_l()const
+Item::line_l() const
 {
-    return pcol_l_->line_l_;
+  return  (axis_group_l_a_[X_AXIS])? axis_group_l_a_[X_AXIS]->line_l() : 0;
 }
 
 int
 Item::break_status_i() const
 {
-    PCol * c = pcol_l_;
-    if (c->breakable_b())
-       return 0;
-    else if (!c->daddy_l_) 
-       return 0; 
-    else if (c == c->daddy_l_->prebreak_p_)
-       return -1;
-    else 
-       return 1;
+  return break_status_i_;
 }
 
 void
-Item::do_breakable_col_processing()
+Item::copy_breakable_items()
 {
-    PCol * c = pcol_l_;
-    if (!c->breakable_b())
-       return;
-    
-    for (int i=0; i < 2; i++) {
-       broken_to_a_[i] = clone()->item();
-       pscore_l_->typeset_item(broken_to_a_[i], c, -1+ 2*i);
-       broken_to_a_[i]->handle_prebroken_dependencies();
+  if (broken_to_drul_[LEFT] || broken_to_drul_[RIGHT])
+    return;
+  Drul_array<Item *> new_copies;
+  Direction  i=LEFT;
+  do 
+    {
+      Item * item_p = clone()->item ();
+
+      item_p->break_status_i_ =  i;
+      pscore_l_->typeset_element (item_p);
+      item_p->handle_prebroken_dependencies();
+      new_copies[i] =item_p;
     }
+  while (flip(&i) != LEFT);
+  broken_to_drul_= new_copies;
+}
+
+void
+Item::do_breakable_col_processing()
+{
+  if (!breakable_b_)
+    return;
+
+  if (!column_l ()->breakable_b_)
+    return;
+
+  copy_breakable_items();
+  handle_prebroken_dependencies();
 
-    handle_prebroken_dependencies();
+  /*
+    Otherwise the broken items won't be pre_process()'ed.
+    */
+  add_dependency (broken_to_drul_[LEFT]);
+  add_dependency (broken_to_drul_[RIGHT]);    
 }
 
 Item*
-Item::find_prebroken_piece(Line_of_score*l) const
+Item::find_prebroken_piece (Line_of_score*l) const
 {
-    if (line_l() == l) 
-       return this;
-    else if (broken_to_a_[0] && broken_to_a_[0]->line_l() == l)
-       return broken_to_a_[0];
-    else if (broken_to_a_[1] && broken_to_a_[1]->line_l() == l)
-       return broken_to_a_[1];
-
-    return 0;
+  if (line_l() == l) 
+    return (Item*)this;
+  else if (broken_to_drul_[LEFT] && broken_to_drul_[LEFT]->line_l() == l)
+    return broken_to_drul_[LEFT];
+  else if (broken_to_drul_[RIGHT] && broken_to_drul_[RIGHT]->line_l() == l)
+    return broken_to_drul_[RIGHT];
+
+  return 0;
 }
 
 Item*
-Item::find_prebroken_piece(PCol*c)const
+Item::find_prebroken_piece (Direction breakstatus) const
 {
-    if (c == pcol_l_ )
-       return (Item *) this;   // ugh
+  if (!breakstatus)
+    return (Item *) this;      // ugh
+  else
+    return (Item*) broken_to_drul_[breakstatus];
+}
+
+void
+Item::handle_prebroken_dependencies()
+{
+  if (breakable_b_)
+    Score_elem::handle_prebroken_dependencies();
+}
+
+int
+Item::left_right_compare(Item const *l, Item const *r)
+{
+  while (!l->is_type_b (Paper_column::static_name ()))
+    l = l->axis_group_l_a_[X_AXIS]->item();
+  while (!r->is_type_b (Paper_column::static_name ()))
+    r = r->axis_group_l_a_[X_AXIS]->item();
+
+  Paper_column *p1 = (Paper_column*)l;
+  Paper_column* p2 = (Paper_column*)r;
+  return p1->rank_i () - p2->rank_i ();
+}
 
-    if (c == pcol_l_->prebreak_p_)
-       return (Item *) broken_to_a_[0];
-    else if (c==pcol_l_->postbreak_p_)
-       return  (Item *)broken_to_a_[1];
 
-    assert(false);
+bool
+Item::linked_b() const
+{
+  return Score_elem::linked_b() || attached_span_l_arr_.size();
 }
 
 void
-Item::handle_prebroken_dependencies()
+Item::do_junk_links()
+{
+  attached_span_l_arr_.set_size(0);
+}
+
+void
+Item::do_unlink()
+{
+  Link_array<Spanner> attached = attached_span_l_arr_;
+
+  for (int i=0; i < attached_span_l_arr_.size (); i++) {
+    Spanner *&s= attached_span_l_arr_[i];
+    if (s->spanned_drul_[LEFT] == this)
+      s->set_bounds (LEFT, 0);
+    if  (s->spanned_drul_[RIGHT] == this)
+      s->set_bounds (RIGHT,0);
+    s =0;
+  }
+  attached_span_l_arr_.set_size (0);
+}
+
+Paper_column *
+Item::column_l () const
 {
-    if ( pcol_l_->breakable_b() || pcol_l_->daddy_l_ )
-       Score_elem::handle_prebroken_dependencies();
+  return axis_group_l_a_[X_AXIS]->item ()->column_l ();
 }