release: 1.3.44

[lilypond.git] / lily / bar.cc

diff --git a/lily/bar.cc b/lily/bar.cc
index 2f4b47b3b5faa7ea88d1844bc572913dbdc504e1..99f65c026ecabd64f111efc1d4efdeed0ca5a658 100644 (file)
--- a/lily/bar.cc
+++ b/lily/bar.cc
@@ -3,69 +3,151 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
+#include <math.h>
 
+#include "main.hh"
+#include "dimensions.hh"
+#include "dimension-cache.hh"
 #include "bar.hh"
 #include "string.hh"
 #include "molecule.hh"
 #include "paper-def.hh"
 #include "lookup.hh"
 #include "debug.hh"
+#include "all-font-metrics.hh"
 
-Bar::Bar()
+Bar::Bar ()
 {
-    breakable_b_ = true;
-    type_str_ = "|";
-    spanned_i_ = 0;
+  set_elt_property ("breakable", SCM_BOOL_T);
 }
 
 
+Real
+Bar::get_bar_size () const
+{
+  // Never called!
+  return 0;
+}
 
-IMPLEMENT_IS_TYPE_B1(Bar,Item);
 
-void
-Bar::do_print()const
+Molecule 
+Bar::do_brew_molecule () const
+{
+  SCM s = get_elt_property ("glyph");
+  if (gh_string_p (s))
+    {
+      String str  =ly_scm2string (s);
+      return compound_barline (str, get_bar_size ());
+    }
+  return Molecule ();
+}
+
+
+Molecule
+Bar::compound_barline (String str, Real h) const
 {
-    DOUT << type_str_;
+  Real kern = paper_l()->get_var ("bar_kern");
+  Real thinkern = paper_l()->get_var ("bar_thinkern");
+
+  Molecule thin = simple_barline (paper_l()->get_var ("barthick_thin"), h);
+  Molecule thick = simple_barline (paper_l()->get_var ("barthick_thick"), h);
+  Molecule colon = lookup_l ()->afm_find ("dots-repeatcolon");  
+
+  Molecule m;
+  
+  if (str == "")
+    {
+      return lookup_l ()->blank (Box (Interval(0, 0), Interval (-h/2, h/2)));
+    }
+  if (str == "scorepostbreak")
+    {
+      return simple_barline (paper_l ()->get_var ("barthick_score"), h);
+    }
+  else if (str == "|")
+    {
+      return thin;
+    }
+  else if (str == "|.")
+    {
+      m.add_at_edge (X_AXIS, LEFT, thick, 0);      
+      m.add_at_edge (X_AXIS, LEFT, thin, kern);
+    }
+  else if (str == ".|")
+    {
+      m.add_at_edge (X_AXIS, RIGHT, thick, 0);
+      m.add_at_edge (X_AXIS, RIGHT, thin, kern);
+    }
+  else if (str == ":|")
+    {
+      m.add_at_edge (X_AXIS, LEFT, thick, 0);
+      m.add_at_edge (X_AXIS, LEFT, thin, kern);
+      m.add_at_edge (X_AXIS, LEFT, colon, kern);      
+    }
+  else if (str == "|:")
+    {
+      m.add_at_edge (X_AXIS, RIGHT, thick, 0);
+      m.add_at_edge (X_AXIS, RIGHT, thin, kern);
+      m.add_at_edge (X_AXIS, RIGHT, colon, kern);      
+    }
+  else if (str == ":|:")
+    {
+      m.add_at_edge (X_AXIS, LEFT, thick, thinkern);
+      m.add_at_edge (X_AXIS, LEFT, colon, kern);      
+      m.add_at_edge (X_AXIS, RIGHT, thick, kern);
+      m.add_at_edge (X_AXIS, RIGHT, colon, kern);      
+    }
+  else if (str == ".|.")
+    {
+      m.add_at_edge (X_AXIS, LEFT, thick, thinkern);
+      m.add_at_edge (X_AXIS, RIGHT, thick, kern);      
+    }
+  else if (str == "||")
+    {
+      m.add_at_edge (X_AXIS, RIGHT, thin, 0);
+      m.add_at_edge (X_AXIS, RIGHT, thin, thinkern);      
+    }
+
+  return m;
 }
 
-Molecule*
-Bar::brew_molecule_p()const
-{    
-    Paper_def *p = paper();
-    Symbol s = p->lookup_l()->bar (type_str_, 
-                                  p->get_var ("bar_size"));
-    Molecule*output = new Molecule (Atom (s));
-    return output;
+
+Molecule
+Bar::simple_barline (Real w, Real h) const
+{
+  return lookup_l ()->filledbox (Box (Interval(0,w), Interval(-h/2, h/2)));
 }
 
-/**
-  Prescriptions for splitting bars.
-  TODO: parametrise this (input-settable)
- */
-static char const *bar_breaks[][3] ={
-    {":|", ":|:", "|:"},
-    {"|", "|", ""},
-    {"", "|:", "|:"},
-    {"||.", "||.", ""},
-    {":|", ":|", ""},
-    {0,0,0}
-};
 
 void
-Bar::do_pre_processing()
+Bar::before_line_breaking ()
 {
-    for (int i=0; bar_breaks[i][0]; i++) {
-       if (bar_breaks[i][1] == type_str_)
-           type_str_ = bar_breaks[i][break_status_i()+1];
+  SCM g = get_elt_property ("glyph");
+  Direction bsd = break_status_dir ();
+  if (gh_string_p (g))
+    {
+      if (bsd)
+       {
+         SCM breakdir = gh_int2scm (bsd);
+         g = scm_eval (gh_list (ly_symbol2scm ("break-barline"),
+                                g,
+                                breakdir,
+                                SCM_UNDEFINED));
+       }
+    }
+  else
+    {
+      g = SCM_UNDEFINED;
     }
   
-    /*
-      span_score_bar needs dims, so don't do
-    
-      transparent_b_ = empty_b_ = (type_str_ == "");
-      
-      */
+  if (!gh_string_p (g))
+    {
+      set_elt_property ("transparent", SCM_BOOL_T);
+      set_extent_callback (0, X_AXIS);      
+    }
+  else
+    set_elt_property ("glyph", g);
 }
-    
+  
+