source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
+ (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
+#include <math.h>
#include "debug.hh"
-#include "molecule.hh"
+#include "text-item.hh"
#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
+#include "staff-symbol-referencer.hh"
#include "staff-symbol-referencer.hh"
+#include "main.hh"
+#include "all-font-metrics.hh"
+#include "afm.hh"
+
+
+/*
+ TEXT : STRING | (MARKUP SENTENCE)
+ MARKUP: PROPERTY | ABBREV
+ SENTENCE: TEXT | SENTENCE TEXT
+ PROPERTY: (key . value)
+ ABBREV: rows lines roman music bold italic named super sub text, or any font-style
+ */
+
+/*
+ TODO:
+
+ rewrite routines and syntax to be like
+
+ TEXT: STRING
+ | (head-expression* TEXT*)
+ ;
+
+ head-expression is a list, containing a tag and a variable number of
+ arguments. If necessary, the number of arguments can be stored in a alist,
+
+ '(
+ (tag1 . argcount1)
+ (tag2 . argcount2)
+
+ ... etc
+
+ )
+
+ or even entries like
+
+ (tag . (argcount function-to-handle-the-tag ))
+
+ */
-struct Text_item
+Molecule
+Text_item::text2molecule (Grob *me, SCM text, SCM alist_chain)
{
- static SCM brew_molecule (SCM);
-};
+ if (gh_string_p (text))
+ return string2molecule (me, text, alist_chain);
+ else if (gh_list_p (text))
+ {
+ if (!gh_pair_p (gh_car (text)) && gh_string_p (gh_car (text)))
+ return string2molecule (me, gh_car (text), alist_chain);
+ else
+ return markup_sentence2molecule (me, text, alist_chain);
+ }
+ return Molecule ();
+}
+
+Molecule
+Text_item::string2molecule (Grob *me, SCM text, SCM alist_chain)
+{
+ SCM style = ly_assoc_chain (ly_symbol2scm ("font-style"),
+ alist_chain);
+ if (gh_pair_p (style) && gh_symbol_p (gh_cdr (style)))
+ alist_chain = Font_interface::add_style (me, gh_cdr(style), alist_chain);
+ Font_metric *fm = Font_interface::get_font (me, alist_chain);
+
+ SCM lookup = ly_assoc_chain (ly_symbol2scm ("lookup"), alist_chain);
+
+ Molecule mol;
+ if (gh_pair_p (lookup) && gh_cdr (lookup) ==ly_symbol2scm ("name"))
+ mol = lookup_character (me, fm, text);
+ else
+ mol = lookup_text (me, fm, text);
+
+ return mol;
+}
+
+Molecule
+Text_item::lookup_character (Grob *, Font_metric*fm, SCM char_name)
+{
+ return fm->find_by_name (ly_scm2string (char_name));
+}
-MAKE_SCHEME_CALLBACK(Text_item,brew_molecule)
+Molecule
+Text_item::lookup_text (Grob *me, Font_metric*fm, SCM text)
+{
+#if 0
+ /*
+ Fixme; should be done differently, move to font-interface?
+ */
+
+ SCM magnification = me->get_grob_property ("font-magnification");
+
+ Font_metric* metric = 0;
+ if (gh_number_p (magnification))
+ {
+
+ Real realmag = pow (1.2, gh_scm2int (magnification));
+ metric = all_fonts_global_p->find_scaled (ly_scm2string (font_name), realmag);
+
+ assert (false);
+ }
+
+#endif
+
+ SCM list = gh_list (ly_symbol2scm ("text"), text, SCM_UNDEFINED);
+ list = fontify_atom (fm, list);
+
+ return Molecule (fm->text_dimension (ly_scm2string (text)), list);
+}
+
+Molecule
+Text_item::markup_sentence2molecule (Grob *me, SCM markup_sentence,
+ SCM alist_chain)
+{
+ /*
+ FIXME
+
+ huh?
+ */
+ // return Molecule ();
+
+ SCM sheet = me->paper_l ()->style_sheet_;
+ SCM f = gh_cdr (scm_assoc (ly_symbol2scm ("markup-to-properties"), sheet));
+
+ SCM markup = gh_car (markup_sentence);
+ SCM sentence = gh_cdr (markup_sentence);
+
+ SCM p = gh_cons (gh_call2 (f, sheet, markup), alist_chain);
+
+ Axis align = X_AXIS;
+ SCM a = ly_assoc_chain (ly_symbol2scm ("align"), p);
+ if (gh_pair_p (a) && gh_number_p (gh_cdr (a)))
+ align = (Axis)gh_scm2int (gh_cdr (a));
+
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+ Real kern = 0;
+ SCM k = ly_assoc_chain (ly_symbol2scm ("kern"), p);
+ if (gh_pair_p (k) && gh_number_p (gh_cdr (k)))
+ kern = gh_scm2double (gh_cdr (k)) * staff_space;
+
+ Real raise = 0;
+ SCM r = ly_assoc_chain (ly_symbol2scm ("raise"), p);
+ if (gh_pair_p (r) && gh_number_p (gh_cdr (r)))
+ raise = gh_scm2double (gh_cdr (r)) * staff_space;
+
+ Offset o (align == X_AXIS ? kern : 0,
+ (align == Y_AXIS ? - kern : 0) + raise);
+
+ Molecule mol;
+ while (gh_pair_p (sentence))
+ {
+ Molecule m = text2molecule (me, gh_car (sentence), p);
+ if (!m.empty_b ())
+ {
+ m.translate (o);
+ mol.add_at_edge (align, align == X_AXIS ? RIGHT : DOWN, m, 0);
+ }
+ sentence = gh_cdr (sentence);
+ }
+ return mol;
+}
+
+MAKE_SCHEME_CALLBACK (Text_item, brew_molecule, 1);
SCM
-Text_item::brew_molecule (SCM sm)
+Text_item::brew_molecule (SCM smob)
{
- Score_element * s = unsmob_element (sm);
+ Grob *me = unsmob_grob (smob);
- SCM style = s->get_elt_property ("style");
- String st = gh_string_p (style) ? ly_scm2string (style) : "";
- SCM txt = s-> get_elt_property ("text");
- String t = gh_string_p (txt) ? ly_scm2string (txt) : "";
+ SCM text = me->get_grob_property ("text");
- Molecule mol = s->paper_l ()->lookup_l(0)->text (st, t, s->paper_l ());
+ SCM properties = Font_interface::font_alist_chain (me);
+ Molecule mol = Text_item::text2molecule (me, text, properties);
- SCM space = s->get_elt_property ("word-space");
+ SCM space = me->get_grob_property ("word-space");
if (gh_number_p (space))
{
Molecule m;
m.set_empty (false);
- mol.add_at_edge (X_AXIS, RIGHT, m, gh_scm2double (space)*
- Staff_symbol_referencer::staff_space (s));
+ mol.add_at_edge (X_AXIS, RIGHT, m, gh_scm2double (space)
+ * Staff_symbol_referencer::staff_space (me));
}
- return mol.create_scheme ();
+ return mol.smobbed_copy ();
}
-
projects / lilypond.git / blobdiff