Issue 1388: Initial work to support opentype font features.

[lilypond.git] / lily / font-interface.cc

diff --git a/lily/font-interface.cc b/lily/font-interface.cc
index 4923cdeb3eddffb2c88b189a5c2322af7e44bf8a..5e5f18ceb3f8a83d133820d762228c06a0cc44ad 100644 (file)
--- a/lily/font-interface.cc
+++ b/lily/font-interface.cc
@@ -1,57 +1,76 @@
 /*
-  font-interface.cc --  implement Font_interface
-  
-  source file of the GNU LilyPond music typesetter
+  This file is part of LilyPond, the GNU music typesetter.
 
-  (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include "all-font-metrics.hh"
-#include "font-metric.hh"
 #include "font-interface.hh"
-#include "grob.hh"
-#include "paper-def.hh"
-#include "warn.hh"
 
+#include "all-font-metrics.hh"
+#include "output-def.hh"
+#include "warn.hh"
+#include "grob.hh"
 
 /* todo: split up this func, reuse in text_item?  */
 Font_metric *
 Font_interface::get_default_font (Grob *me)
 {
-  Font_metric *fm = unsmob_metrics (me->get_property ("font"));
+  Font_metric *fm = unsmob<Font_metric> (me->get_property ("font"));
   if (!fm)
     {
+      SCM chain = music_font_alist_chain (me);
 
-      SCM defaults = me->get_paper ()->lookup_variable (ly_symbol2scm ("font-defaults"));
-      SCM chain = me->get_property_alist_chain (defaults);
-      
-      fm = select_font (me->get_paper (), chain);
+      fm = select_font (me->layout (), chain);
       me->set_property ("font", fm->self_scm ());
     }
-  
+
   return fm;
 }
 
-LY_DEFINE (ly_font_interface_get_default_font, "ly:get-default-font",
-         1 , 0, 0, (SCM grob),
-         "Return the default font for grob @var{gr}.")
+SCM
+Font_interface::music_font_alist_chain (Grob *g)
 {
-  Grob *gr = unsmob_grob (grob);
-  SCM_ASSERT_TYPE (gr, grob, SCM_ARG1, __FUNCTION__, "grob");
-
-  return Font_interface::get_default_font (gr)->self_scm ();
+  SCM defaults
+    = g->layout ()->lookup_variable (ly_symbol2scm ("font-defaults"));
+  if (SCM_UNBNDP (defaults))
+    defaults = SCM_EOL;
+  return g->get_property_alist_chain (defaults);
 }
 
-
 SCM
 Font_interface::text_font_alist_chain (Grob *g)
 {
-  SCM defaults = g->get_paper ()->lookup_variable (ly_symbol2scm ("text-font-defaults"));
+  SCM defaults
+    = g->layout ()->lookup_variable (ly_symbol2scm ("text-font-defaults"));
+  if (SCM_UNBNDP (defaults))
+    defaults = SCM_EOL;
   return g->get_property_alist_chain (defaults);
 }
 
-ADD_INTERFACE (Font_interface, "font-interface",
-              "Any symbol that is typeset through fixed sets of glyphs, "
-              " (ie. fonts)",
-              "font-magnification font font-series font-shape "
-              "font-family font-name font-size");
+ADD_INTERFACE (Font_interface,
+               "Any symbol that is typeset through fixed sets of glyphs,"
+               " (i.e., fonts).",
+
+               /* properties */
+               "font "
+               "font-encoding "
+               "font-family "
+               "font-name "
+               "font-series "
+               "font-shape "
+               "font-size "
+               "font-features "
+              );