X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftext-interface.cc;h=1c88d97cb30c7789c068030c93d255f8a28e1efa;hb=e04d2f37f505bd6de6ae8b3923de9b68a3a64455;hp=5524d5a0b1259c3fcda61ab166d075faa177c76b;hpb=ed32442d90825777d09672a871940674b308a2da;p=lilypond.git

diff --git a/lily/text-interface.cc b/lily/text-interface.cc
index 5524d5a0b1..1c88d97cb3 100644
--- a/lily/text-interface.cc
+++ b/lily/text-interface.cc
@@ -1,15 +1,14 @@
 /*
-  text-item.cc -- implement Text_interface
+  text-interface.cc -- implement Text_interface
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1998--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1998--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
-#include "text-item.hh"
+#include "text-interface.hh"
 
-#include <math.h>
 
 #include "main.hh"
 #include "config.hh"
@@ -20,26 +19,78 @@
 #include "output-def.hh"
 #include "modified-font-metric.hh"
 
+static void
+replace_whitespace (string *str)
+{
+  vsize i = 0;
+  vsize n = str->size ();
+
+  while (i < n)
+    {
+      vsize char_len = 1;
+      char cur = (*str)[i];
+      
+      // U+10000 - U+10FFFF
+      if ((cur & 0x11110000) == 0x11110000)
+	char_len = 4;
+      // U+0800 - U+FFFF
+      else if ((cur & 0x11100000) == 0x11100000)
+	char_len = 3;
+      // U+0080 - U+07FF
+      else if ((cur & 0x11000000) == 0x11000000)
+	char_len = 2;
+      else if (cur & 0x10000000)
+	programming_error ("invalid utf-8 string");
+      else
+	// avoid the locale-dependent isspace
+	if (cur == '\n' || cur == '\t' || cur == '\v')
+	  (*str)[i] = ' ';
+
+      i += char_len;
+    }
+}
+
 MAKE_SCHEME_CALLBACK (Text_interface, interpret_string, 3);
 SCM
 Text_interface::interpret_string (SCM layout_smob,
 				  SCM props,
 				  SCM markup)
 {
-  Output_def *layout = unsmob_output_def (layout_smob);
-
-  SCM_ASSERT_TYPE (layout, layout_smob, SCM_ARG1,
-		   __FUNCTION__, "Layout definition");
-  SCM_ASSERT_TYPE (scm_is_string (markup), markup, SCM_ARG3,
-		   __FUNCTION__, "string");
-
-  String str = ly_scm2string (markup);
+  LY_ASSERT_SMOB (Output_def, layout_smob, 1);
+  LY_ASSERT_TYPE (scm_is_string, markup, 3);
 
+  string str = ly_scm2string (markup);
+  Output_def *layout = unsmob_output_def (layout_smob);
   Font_metric *fm = select_encoded_font (layout, props);
-  return fm->text_stencil (str).smobbed_copy ();
+
+  replace_whitespace (&str);
+
+  /*
+    We want to use "glyph-string" in the SVG backend for all
+    music fonts (Emmentaler and Aybabtu) that pass through the
+    text interface.  Here the font encoding is checked to see if
+    it matches one of the music font encodings.  --pmccarty
+  */
+  SCM encoding = ly_chain_assoc_get (ly_symbol2scm ("font-encoding"),
+				     props,
+				     SCM_BOOL_F);
+  SCM music_encodings = ly_lily_module_constant ("all-music-font-encodings");
+
+  if (scm_memq (encoding, music_encodings) != SCM_BOOL_F)
+    return fm->word_stencil (str, true).smobbed_copy ();
+  else
+    return fm->word_stencil (str, false).smobbed_copy ();
 }
 
-MAKE_SCHEME_CALLBACK (Text_interface, interpret_markup, 3);
+MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Text_interface, interpret_markup, 3, 0,
+				   "Convert a text markup into a stencil."
+"  Takes three arguments, @var{layout}, @var{props}, and @var{markup}.\n"
+"\n"
+"@var{layout} is a @code{\\layout} block; it may be obtained from a grob with"
+" @code{ly:grob-layout}.  @var{props} is an alist chain, i.e. a list of"
+"  alists.  This is typically obtained with"
+" @code{(ly:grob-alist-chain grob (ly:output-def-lookup layout 'text-font-defaults))}."
+"  @var{markup} is the markup text to be processed.");
 SCM
 Text_interface::interpret_markup (SCM layout_smob, SCM props, SCM markup)
 {
@@ -49,16 +100,18 @@ Text_interface::interpret_markup (SCM layout_smob, SCM props, SCM markup)
     {
       SCM func = scm_car (markup);
       SCM args = scm_cdr (markup);
-      if (!markup_p (markup))
-	programming_error ("Markup head has no markup signature.");
+      if (!is_markup (markup))
+	programming_error ("markup head has no markup signature");
 
       return scm_apply_2 (func, layout_smob, props, args);
     }
   else
     {
-      programming_error ("Is not a markup: ");
+      programming_error ("Object is not a markup. ");
+      scm_puts ("This object should be a markup: ", scm_current_error_port ());
       scm_display (markup, scm_current_error_port ());
-      assert (false);
+      scm_puts ("\n", scm_current_error_port ());
+
       Box b;
       b[X_AXIS].set_empty ();
       b[Y_AXIS].set_empty ();
@@ -76,12 +129,12 @@ Text_interface::print (SCM grob)
 
   SCM t = me->get_property ("text");
   SCM chain = Font_interface::text_font_alist_chain (me);
-  return interpret_markup (me->get_layout ()->self_scm (), chain, t);
+  return interpret_markup (me->layout ()->self_scm (), chain, t);
 }
 
 /* Ugh. Duplicated from Scheme.  */
 bool
-Text_interface::markup_p (SCM x)
+Text_interface::is_markup (SCM x)
 {
   return (scm_is_string (x)
 	  || (scm_is_pair (x)
@@ -90,7 +143,27 @@ Text_interface::markup_p (SCM x)
 				      ly_symbol2scm ("markup-signature"))));
 }
 
-ADD_INTERFACE (Text_interface, "text-interface",
-	       "A scheme markup text, see @usermanref{Text markup}.",
-	       "text baseline-skip word-space");
+bool
+Text_interface::is_markup_list (SCM x)
+{
+  SCM music_list_p = ly_lily_module_constant ("markup-list?");
+  return scm_is_true (scm_call_1 (music_list_p, x));
+}
+
+
+ADD_INTERFACE (Text_interface,
+	       "A Scheme markup text, see @ruser{Formatting text} and"
+	       " @ruser{New markup command definition}.\n"
+	       "\n"
+	       "There are two important commands:"
+	       " @code{ly:text-interface::print}, which is a"
+	       " grob callback, and"
+	       " @code{ly:text-interface::interpret-markup}.",
+
+	       /* properties */
+	       "baseline-skip "
+	       "text "
+	       "word-space "
+	       "text-direction "
+	       );