release: 1.3.94

[lilypond.git] / lily / bar.cc

diff --git a/lily/bar.cc b/lily/bar.cc
index 8a6891b330bab5ac50a075e6dc59e588e47d60e8..11bcc3830259c46a5b3537d607e16dd34d775f06 100644 (file)
--- a/lily/bar.cc
+++ b/lily/bar.cc
@@ -3,34 +3,182 @@
 
   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 "score-element.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"
+#include "item.hh"
+#include "staff-symbol-referencer.hh"
 
-Bar::Bar( String t)
+MAKE_SCHEME_CALLBACK(Bar,brew_molecule,1);
+
+SCM 
+Bar::brew_molecule (SCM smob) 
 {
-    type = t;
+  Score_element * me = unsmob_element (smob);
+
+  SCM s = me->get_elt_property ("glyph");
+  SCM barsiz_proc = me->get_elt_property ("barsize-procedure");
+  if (gh_string_p (s) && gh_procedure_p (barsiz_proc))
+    {
+      String str  =ly_scm2string (s);
+      SCM siz = gh_call1 (barsiz_proc, me->self_scm ());
+      Real sz =  gh_scm2double (siz);
+      if (sz < 0)
+       return SCM_EOL;
+      
+      return compound_barline (me, str, sz).create_scheme ();
+    }
+  return SCM_EOL;
 }
 
-IMPLEMENT_STATIC_NAME(Bar);
 
+Molecule
+Bar::compound_barline (Score_element*me, String str, Real h)
+{
+  Real kern = gh_scm2double (me->get_elt_property ("kern"));
+  Real thinkern = gh_scm2double (me->get_elt_property ("thin-kern"));
+  Real hair = gh_scm2double (me->get_elt_property ("hair-thickness"));
+  Real fatline = gh_scm2double (me->get_elt_property ("thick-thickness"));
+
+  Real staffline = me->paper_l ()->get_var ("stafflinethickness");
+
+  kern *= staffline;
+  thinkern *= staffline;
+  hair *= staffline;
+  fatline *= staffline;
+  
+  Molecule thin = simple_barline (me, hair, h);
+  Molecule thick = simple_barline (me, fatline, h);
+  Molecule colon = me->lookup_l ()->afm_find ("dots-repeatcolon");  
+
+  Molecule m;
+  
+  if (str == "")
+    {
+      return me->lookup_l ()->blank (Box (Interval(0, 0), Interval (-h/2, h/2)));
+    }
+  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::simple_barline (Score_element*me,Real w, Real h) 
+{
+  return me->lookup_l ()->filledbox (Box (Interval(0,w), Interval(-h/2, h/2)));
+}
+
+MAKE_SCHEME_CALLBACK(Bar,before_line_breaking ,1);
+
+SCM
+Bar::before_line_breaking  (SCM smob)
+{
+  Score_element*me=unsmob_element (smob);
+  Item * item = dynamic_cast<Item*> (me);
+  
+  SCM g = me->get_elt_property ("glyph");
+  SCM orig = g;
+  Direction bsd = item->break_status_dir ();
+  if (gh_string_p (g) && bsd)
+    {
+      SCM proc = me->get_elt_property ("break-glyph-function");
+      g = gh_call2 (proc, g, gh_int2scm (bsd));
+    }
+
+  
+  if (!gh_string_p (g))
+    {
+      me->set_elt_property ("molecule-callback", SCM_BOOL_T);
+      me->set_extent_callback (SCM_EOL, X_AXIS);
+      // leave y_extent for spanbar? 
+    }
+
+  if (! gh_equal_p  (g, orig))
+    me->set_elt_property ("glyph", g);
+
+
+  return SCM_UNSPECIFIED;
+}
+  
 void
-Bar::do_print()const
+Bar::set_interface (Score_element*me)
+{
+  me->set_elt_property ("interfaces",
+                       gh_cons (ly_symbol2scm ("bar-interface"), me->get_elt_property ("interfaces")));
+}
+
+bool
+Bar::has_interface (Score_element*m)
 {
-    mtor << type;
+  return m && m->has_interface (ly_symbol2scm ("bar-interface"));
 }
 
-Molecule*
-Bar::brew_molecule_p()const
-{    
-    Symbol s = paper()->lookup_l()->bar(type);
-    Molecule*output = new Molecule(Atom(s));
-    return output;
+
+MAKE_SCHEME_CALLBACK(Bar,get_staff_bar_size,1);
+SCM
+Bar::get_staff_bar_size (SCM smob) 
+{
+  Score_element*me = unsmob_element (smob);
+  Real ss = Staff_symbol_referencer::staff_space (me);
+  SCM size = me->get_elt_property ("bar-size");
+  if (gh_number_p (size))
+    return gh_double2scm (gh_scm2double(size)*ss);
+  else
+    {
+      return gh_double2scm ((Staff_symbol_referencer::line_count (me) -1) * ss);
+    }
 }
-