release: 1.0.1

[lilypond.git] / lily / key-item.cc

diff --git a/lily/key-item.cc b/lily/key-item.cc
index 93abfa0575bd1946e894605a87a40843583d8573..94645d20c227f762021d3c00d5d96a10e6a22cae 100644 (file)
--- a/lily/key-item.cc
+++ b/lily/key-item.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1996, 1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
+  (c) 1996, 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 
   keyplacement by Mats Bengtsson
 */
@@ -15,38 +15,50 @@
 #include "paper-def.hh"
 #include "lookup.hh"
 
-#include "key-grav.hh"
+#include "key-engraver.hh"
 
 const int FLAT_TOP_PITCH=2; /* fes,ges,as and bes typeset in lower octave */
 const int SHARP_TOP_PITCH=4; /*  ais and bis typeset in lower octave */
 
-Key_item::Key_item (int c)
+Key_item::Key_item ()
 {
   breakable_b_ =true;
   default_b_ = false;
-  set_c_position (c);
+  set_c_position (0);
 }
 
 void
 Key_item::read (Key_engraver const & key_grav_r)
 {
-  assert (!key_grav_r.key_.multi_octave_b_);
-  const Array<int> &idx_arr =key_grav_r.accidental_idx_arr_; 
+  multi_octave_b_ = key_grav_r.key_.multi_octave_b_;
+  const Array<Musical_pitch> &idx_arr = key_grav_r.accidental_idx_arr_; 
   for (int i = 0 ; i< idx_arr.size(); i++) 
     {
-      int note = idx_arr[i];
-      int acc = ((Key &) key_grav_r.key_).oct (0).acc (note);
-
-      add (note, acc);
+      Musical_pitch m_l =idx_arr[i];
+      if (multi_octave_b_)
+        add (m_l);
+      else
+       add (m_l.notename_i_, m_l.accidental_i_);
+    }
+  const Array<Musical_pitch> &old_idx_arr = key_grav_r.old_accidental_idx_arr_; 
+  for (int i = 0 ; i< old_idx_arr.size(); i++) 
+    {
+      Musical_pitch m_l =old_idx_arr[i];
+      if (multi_octave_b_)
+        add_old (m_l);
+      else
+       add_old (m_l.notename_i_, m_l.accidental_i_);
     }
 }
 
 void 
 Key_item::set_c_position (int c0)
 {
-  int from_bottom_pos = c0 + 4;        // ugh
-  int octaves =(from_bottom_pos / 7) +1 ;
-  from_bottom_pos =(from_bottom_pos + 7*octaves)%7;
+  c0_position = c0;
+  // Find the c in the range -4 through 2
+  int from_bottom_pos = c0 + 4;        
+  from_bottom_pos = from_bottom_pos%7;
+  from_bottom_pos = (from_bottom_pos + 7)%7; // Precaution to get positive.
   c_position  = from_bottom_pos - 4;
 }
 
@@ -54,36 +66,101 @@ Key_item::set_c_position (int c0)
 void
 Key_item::add (int p, int a)
 {
-  if ((a<0 && ((p>FLAT_TOP_PITCH) || (p+c_position>4)) && (p+c_position>1)) 
-      ||
-      (a>0 && ((p>SHARP_TOP_PITCH) || (p+c_position>5)) && (p+c_position>2))) 
-    {
-      p -= 7; /* Typeset below c_position */
-    }
   pitch.push (p);
   acc.push (a);
 }
 
+void
+Key_item::add (const Musical_pitch& pitch_r)
+{
+  pitch.push (pitch_r.steps());
+  acc.push (pitch_r.accidental_i_);
+}
+
+void
+Key_item::add_old (int p, int a)
+{
+  old_pitch.push (p);
+  old_acc.push (a);
+}
 
+void
+Key_item::add_old (const Musical_pitch& pitch_r)
+{
+  old_pitch.push (pitch_r.steps());
+  old_acc.push (pitch_r.accidental_i_);
+}
+
+int
+Key_item::calculate_position(int p, int a) const
+{
+  if (multi_octave_b_) 
+    {
+      return p + c0_position;
+    }
+  else {
+    if ((a<0 && ((p>FLAT_TOP_PITCH) || (p+c_position>4)) && (p+c_position>1)) 
+       ||
+       (a>0 && ((p>SHARP_TOP_PITCH) || (p+c_position>5)) && (p+c_position>2))) 
+      {
+       p -= 7; /* Typeset below c_position */
+      }
+    return p + c_position;
+  }
+}
+
+/*
+  TODO space the `natural' signs wider
+ */
 Molecule*
 Key_item::brew_molecule_p() const
 {
   Molecule*output = new Molecule;
   Real inter = paper()->internote_f ();
   
+  int j;
+  if ((break_status_dir_ == LEFT || break_status_dir_ == CENTER)
+      || old_pitch.size ())
+    {
+      for (int i =0; i < old_pitch.size(); i++) 
+        {
+          for (j =0; (j < pitch.size()) && (old_pitch[i] != pitch[j]); j++) 
+           ;
+         
+          if (j == pitch.size()
+             || (old_pitch[i] == pitch[j] && old_acc[i] != acc[j]))
+            {
+              Atom a =lookup_l ()->accidental (0);
+              a.translate_axis (calculate_position(old_pitch[i], old_acc[i]) * inter, Y_AXIS);
+              Molecule m (a);
+              output->add_at_edge (X_AXIS, RIGHT, m);  
+            }
+        }
+
+      /*
+       Add half a space between  cancellation and key sig.
+
+       As suggested by [Ross], p.148.
+       */
+      Interval x(0, inter);
+      Interval y(0,0);
+
+      output->add_at_edge (X_AXIS, RIGHT, lookup_l()->fill (Box(x,y)));
+    }
+ 
   for (int i =0; i < pitch.size(); i++) 
     {
-      Atom a =paper()->lookup_l ()->accidental (acc[i]);
-      a.translate_axis ((c_position + pitch[i]) * inter, Y_AXIS);
+      Atom a =lookup_l ()->accidental (acc[i]);
+      a.translate_axis (calculate_position(pitch[i], acc[i]) * inter, Y_AXIS);
       Molecule m (a);
       output->add_at_edge (X_AXIS, RIGHT, m);  
     }
   if (pitch.size()) 
     {
-      Molecule m (paper()->lookup_l ()->fill (Box (
-                                                  Interval (0, paper()->note_width ()),
-                                                  Interval (0,0))));
-
+      Molecule m (lookup_l ()->fill (Box (
+                                         Interval (0, paper()->note_width ()),
+                                         Interval (0,0))));
+      
       output->add_at_edge (X_AXIS, RIGHT, m);
     }
   return output;
@@ -96,7 +173,7 @@ Key_item::do_pre_processing()
 {
   if (default_b_) 
     {
-      transparent_b_ = (break_status_i() != 1);
+      transparent_b_ = (break_status_dir() != RIGHT);
       set_empty (transparent_b_);
     }
 }