Run `make grand-replace'.

[lilypond.git] / lily / time-signature.cc

diff --git a/lily/time-signature.cc b/lily/time-signature.cc
index 50878c467905b469faada933b93c4cf3ea9530f8..6958de57eac19c70354649a82581aaa4cf634ee4 100644 (file)
--- a/lily/time-signature.cc
+++ b/lily/time-signature.cc
@@ -1,37 +1,149 @@
-/*   
-  time-signature.cc --  implement Time_signature
-  
+/*
+  time-signature.cc -- implement Time_signature
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 1996--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
 
-#include "scalar.hh"
-#include "molecule.hh"
+  (c) 1996--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
 #include "time-signature.hh"
-#include "paper-def.hh"
-#include "lookup.hh"
 
-Time_signature::Time_signature ()
+#include "grob.hh"
+#include "font-interface.hh"
+#include "international.hh"
+#include "output-def.hh"
+#include "staff-symbol-referencer.hh"
+#include "text-interface.hh"
+#include "warn.hh"
+
+/*
+  TODO:
+
+  this file should go ; The formatting can completely be done with
+  markups.
+*/
+
+MAKE_SCHEME_CALLBACK (Time_signature, print, 1);
+SCM
+Time_signature::print (SCM smob)
 {
-  breakable_b_ = true;
+  Grob *me = unsmob_grob (smob);
+  SCM st = me->get_property ("style");
+  SCM frac = me->get_property ("fraction");
+  int n = 4;
+  int d = 4;
+  if (scm_is_pair (frac))
+    {
+      n = scm_to_int (scm_car (frac));
+      d = scm_to_int (scm_cdr (frac));
+    }
+
+  Stencil m;
+  if (st == ly_symbol2scm ("single-digit"))
+    m = numbered_time_signature (me, n, 0);
+  else if (scm_is_symbol (st))
+    m = special_time_signature (me, st, n, d);
+  else
+    m = numbered_time_signature (me, n, d);
+
+  if (Staff_symbol_referencer::line_count (me) % 2 == 0)
+    m.translate_axis (Staff_symbol_referencer::staff_space (me) / 2, Y_AXIS);
+
+  return m.smobbed_copy ();
 }
 
-Molecule*
-Time_signature::brew_molecule_p () const
+Stencil
+Time_signature::special_time_signature (Grob *me, SCM scm_style, int n, int d)
 {
-  Atom s;
-  if (time_sig_type_str_.length_i ())
+  string style = ly_scm2string (scm_symbol_to_string (scm_style));
+
+  if (style == "numbered")
+    return numbered_time_signature (me, n, d);
+
+  if ((style == "default") || (style == ""))
+    style = to_string ("C");
+
+  if (style == "C")
     {
-      s = lookup_l ()-> special_time_signature (time_sig_type_str_);
+      if /* neither C2/2 nor C4/4 */
+       (((n != 2) || (d != 2))
+        && ((n != 4) || (d != 4)))
+       return numbered_time_signature (me, n, d);
     }
-  else
-    s = lookup_l ()->time_signature (args_);
-  s.translate_axis (-s.extent ()[Y_AXIS].center (), Y_AXIS);
-  return new Molecule (Atom (s));
+
+  string char_name = style + to_string (n) + to_string (d);
+  me->set_property ("font-encoding", ly_symbol2scm ("fetaMusic"));
+  Stencil out = Font_interface::get_default_font (me)
+    ->find_by_name ("timesig." + char_name);
+  if (!out.is_empty ())
+    return out;
+
+  /* If there is no such symbol, we default to the numbered style.
+     (Here really with a warning!) */
+  me->warning (_f ("time signature symbol `%s' not found; "
+                  "reverting to numbered style", char_name));
+  return numbered_time_signature (me, n, d);
 }
 
+Stencil
+Time_signature::numbered_time_signature (Grob *me, int num, int den)
+{
+  SCM chain = me->get_property_alist_chain (Font_interface::text_font_alist_chain (me));
+  chain = scm_cons (scm_list_1 (scm_cons (ly_symbol2scm ("font-encoding"),
+                                         ly_symbol2scm ("fetaNumber"))),
+                   chain);
+
+  SCM sn = Text_interface::interpret_markup (me->layout ()->self_scm (), chain,
+                                            ly_string2scm (to_string (num)));
+  SCM sd = Text_interface::interpret_markup (me->layout ()->self_scm (), chain,
+                                            ly_string2scm (to_string (den)));
+
+  Stencil n = *unsmob_stencil (sn);
+  Stencil d = *unsmob_stencil (sd);
+
+  n.align_to (X_AXIS, CENTER);
+  d.align_to (X_AXIS, CENTER);
+  Stencil m;
+  if (den)
+    {
+      m.add_at_edge (Y_AXIS, UP, n, 0.0);
+      m.add_at_edge (Y_AXIS, DOWN, d, 0.0);
+    }
+  else
+    {
+      m = n;
+      m.align_to (Y_AXIS, CENTER);
+    }
+
+  m.align_to (X_AXIS, LEFT);
+
+  return m;
+}
 
+ADD_INTERFACE (Time_signature,
+              "A time signature, in different styles.  The following values"
+              " for @code{style} are are recognized:\n"
+              "\n"
+              "@table @code\n"
+              "@item C\n"
+              "4/4 and 2/2 are typeset as C and struck C, respectively."
+              "  All other time signatures are written with two digits.\n"
+              "@item neomensural\n"
+              "2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8, and 9/8 are"
+              " typeset with neo-mensural style mensuration marks.  All"
+              " other time signatures are written with two digits.\n"
+              "@item mensural\n"
+              "2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8, and 9/8 are"
+              " typeset with mensural style mensuration marks.  All other"
+              " time signatures are written with two digits.\n"
+              "@item single-digit\n"
+              "All time signatures are typeset with a single digit, e.g.,"
+              " 3/2 is written as 3.\n"
+              "@end table\n"
+              "\n"
+              "See also the test-file @file{input/test/time.ly}.",
 
-IMPLEMENT_IS_TYPE_B1(Time_signature,Item);
+              /* properties */
+              "fraction "
+              "style "
+              );