* lily/text-item.cc (interpret_string): new file, select font with

[lilypond.git] / lily / key-signature-interface.cc

diff --git a/lily/key-signature-interface.cc b/lily/key-signature-interface.cc
index 16215ce5417123717f89200797fc9df97799f0ce..bb2b15db75d51b5a423ef915bfb2718532e1df24 100644 (file)
--- a/lily/key-signature-interface.cc
+++ b/lily/key-signature-interface.cc
@@ -3,25 +3,25 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1996--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 
   keyplacement by Mats Bengtsson
 */
 
 #include "item.hh"
 
-#include "molecule.hh"
+#include "stencil.hh"
 #include "paper-def.hh"
 #include "font-interface.hh"
 #include "staff-symbol-referencer.hh"
 #include "lookup.hh"
 #include "lily-guile.hh"
 #include "lily-proto.hh"
-
+#include "accidental-interface.hh"
 
 struct Key_signature_interface
 {
-  DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM ));
+  DECLARE_SCHEME_CALLBACK (print, (SCM ));
 
   static bool has_interface (Grob*);
 };
@@ -50,14 +50,16 @@ const int NATURAL_TOP_PITCH = 4;
   - lots of values trivially shared (key doesn't change very
   often). Compute those once, and use that as cache for the rest.
 
+  TODO: can  we do without c0pos? it's partly musical. 
+
 */
 int
 alteration_pos  (SCM what, int alter, int c0p)
 {
-  if (gh_pair_p (what))
-    return gh_scm2int (ly_car (what)) * 7 + gh_scm2int (ly_cdr (what)) + c0p;
+  if (is_pair (what))
+    return ly_scm2int (ly_car (what)) * 7 + ly_scm2int (ly_cdr (what)) + c0p;
 
-  int p = gh_scm2int (what);
+  int p = ly_scm2int (what);
 
   // Find the c in the range -4 through 2
   int from_bottom_pos = c0p + 4;
@@ -92,54 +94,63 @@ alteration_pos  (SCM what, int alter, int c0p)
   TODO
   - space the `natural' signs wider
  */
-MAKE_SCHEME_CALLBACK (Key_signature_interface,brew_molecule,1);
+MAKE_SCHEME_CALLBACK (Key_signature_interface,print,1);
 SCM
-Key_signature_interface::brew_molecule (SCM smob)
+Key_signature_interface::print (SCM smob)
 {
   Grob*me =unsmob_grob (smob);
 
   Real inter = Staff_symbol_referencer::staff_space (me)/2.0;
-  
-  SCM scm_style = me->get_grob_property ("style");
+
+  SCM scm_style = me->get_property ("style");
   String style;
-  if (gh_symbol_p (scm_style))
+  if (is_symbol (scm_style))
     {
-      style = ly_scm2string (scm_symbol_to_string (scm_style));
+      style = ly_symbol2string (scm_style);
     }
   else
     {
       style = "";
     }
 
-  SCM newas = me->get_grob_property ("new-accidentals");  
-  Molecule mol;
+  SCM newas = me->get_property ("new-accidentals");  
+  Stencil mol;
 
-  SCM c0s = me->get_grob_property ("c0-position");
-  int c0p=0;
-  if (gh_number_p (c0s))
-     c0p = gh_scm2int (c0s);
+  SCM c0s = me->get_property ("c0-position");
+  int c0p = 0;
+  if (is_number (c0s))
+    c0p = ly_scm2int (c0s);
 
   /*
     SCM lists are stacks, so we work from right to left, ending with
     the cancellation signature.
   */
 
-  for (SCM s = newas; gh_pair_p (s); s = ly_cdr (s))
+  Font_metric *fm = Font_interface::get_default_font (me);
+  for (SCM s = newas; is_pair (s); s = ly_cdr (s))
     {
-      SCM what = ly_caar (s);
-      int alter = gh_scm2int (ly_cdar (s));
-      int pos = alteration_pos (what, alter, c0p);
-      
-      Molecule m = Font_interface::get_default_font (me)->
-         find_by_name (String ("accidentals-") + style + to_str (alter));
-      m.translate_axis (pos * inter, Y_AXIS);
-      mol.add_at_edge (X_AXIS, LEFT, m, 0);
+      int alteration = ly_scm2int (ly_cdar (s));
+      String font_char =
+       Accidental_interface::get_fontcharname (style, alteration);
+      Stencil acc (fm->find_by_name ("accidentals-" + font_char));
+
+      if (acc.is_empty ())
+       {
+         me->warning (_f ("accidental `%s' not found", font_char));
+       }
+      else
+       {
+         SCM what = ly_caar (s);
+         int pos = alteration_pos (what, alteration, c0p);
+         acc.translate_axis (pos * inter, Y_AXIS);
+         mol.add_at_edge (X_AXIS, LEFT, acc, 0, 0);
+       }
     }
 
   Item *it = dynamic_cast<Item*> (me) ;
   if (it->break_status_dir () != RIGHT)
     {
-      SCM old = me->get_grob_property ("old-accidentals");
+      SCM old = me->get_property ("old-accidentals");
       
       /*
        Add half a space between  cancellation and key sig.
@@ -149,24 +160,24 @@ Key_signature_interface::brew_molecule (SCM smob)
       Interval x (0, inter);
       Interval y (0,0);
 
-      mol.add_at_edge (X_AXIS, LEFT, Lookup::blank (Box (x,y)),0);
+      mol.add_at_edge (X_AXIS, LEFT, Lookup::blank (Box (x,y)), 0, 0);
 
-      Molecule natural;
-      if (gh_pair_p (old))
+      Stencil natural;
+      if (is_pair (old))
        natural=Font_interface::get_default_font (me)->
            find_by_name (String ("accidentals-") + style + String ("0"));
       
-      for (; gh_pair_p (old); old = ly_cdr (old))
+      for (; is_pair (old); old = ly_cdr (old))
         {
          SCM found = scm_assoc (ly_caar (old), newas);
          if (found == SCM_BOOL_F
              || ly_cdr (found) != ly_cdar (old))
            {
              SCM what = ly_caar (old);
-             int alter = 0;
-             int pos = alteration_pos (what, alter, c0p);
+             int alteration = 0;
+             int pos = alteration_pos (what, alteration, c0p);
 
-             Molecule m = natural;
+             Stencil m = natural;
               m.translate_axis (pos* inter, Y_AXIS);
 
              /*
@@ -175,7 +186,7 @@ Key_signature_interface::brew_molecule (SCM smob)
                needed to prevent collisions.
               */
              Real padding = 0.1 ;
-             mol.add_at_edge (X_AXIS, LEFT, m, padding);
+             mol.add_at_edge (X_AXIS, LEFT, m, padding, 0);
             }
         }
     }