2 text-item.cc -- implement Text_item
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "text-item.hh"
12 #include "paper-def.hh"
14 #include "staff-symbol-referencer.hh"
15 #include "staff-symbol-referencer.hh"
17 #include "all-font-metrics.hh"
22 TEXT : STRING | (MARKUP SENTENCE)
23 MARKUP: PROPERTY | ABBREV
24 SENTENCE: TEXT | SENTENCE TEXT
25 PROPERTY: (key . value)
26 ABBREV: rows lines roman music bold italic named super sub text, or any font-style
29 Text_item::text2molecule (Score_element *me, SCM text, SCM properties)
31 if (gh_string_p (text))
32 return string2molecule (me, text, properties);
33 else if (gh_list_p (text))
35 if (!gh_pair_p (gh_car (text)) && gh_string_p (gh_car (text)))
36 return string2molecule (me, gh_car (text), properties);
38 return markup_sentence2molecule (me, text, properties);
45 get_elt_property (Score_element *me, char const *name)
47 SCM s = me->get_elt_property (name);
49 error (_f ("No `%s' defined for %s", name, me->name ()));
54 Text_item::string2molecule (Score_element *me, SCM text, SCM properties)
56 SCM style = scm_assoc (ly_symbol2scm ("font-style"), properties);
57 SCM paper = me->get_elt_property ("style-sheet");
59 paper = scm_string_to_symbol (me->paper_l ()->get_scmvar ("style_sheet"));
62 if (gh_pair_p (style))
64 SCM f = get_elt_property (me, "style-to-font-name");
65 font_name = gh_call2 (f, paper, gh_cdr (style));
69 SCM f = get_elt_property (me, "properties-to-font-name");
70 font_name = gh_call2 (f, paper, properties);
73 // should move fallback to scm
74 if (!gh_string_p (font_name))
75 font_name = ly_str02scm ("cmr10");
77 SCM lookup = scm_assoc (ly_symbol2scm ("lookup"), properties);
80 if (gh_pair_p (lookup) && ly_symbol2string (gh_cdr (lookup)) == "name")
81 mol = lookup_character (me, font_name, text);
83 mol = lookup_text (me, font_name, text);
89 caching / use some form of Lookup without 'paper'?
92 Text_item::lookup_character (Score_element *me, SCM font_name, SCM char_name)
94 Adobe_font_metric *afm = all_fonts_global_p->find_afm (ly_scm2string (font_name));
98 warning (_f ("can't find font: `%s'", ly_scm2string (font_name)));
99 warning (_f ("(search path: `%s')", global_path.str ().ch_C()));
100 error (_ ("Aborting"));
103 AFM_CharMetricInfo const *metric =
104 afm->find_char_metric (ly_scm2string (char_name), true);
113 SCM list = gh_list (ly_symbol2scm ("char"),
114 gh_int2scm (metric->code),
117 list = fontify_atom (afm, list);
118 return Molecule (afm_bbox_to_box (metric->charBBox), list);
122 Text_item::lookup_text (Score_element *me, SCM font_name, SCM text)
124 SCM magnification = me->get_elt_property ("font-magnification");
125 Font_metric* metric = 0;
126 if (gh_number_p (magnification))
127 metric = all_fonts_global_p->find_scaled (ly_scm2string (font_name),
128 gh_scm2int (magnification));
130 metric = all_fonts_global_p->find_font (ly_scm2string (font_name));
132 SCM list = gh_list (ly_symbol2scm ("text"), text, SCM_UNDEFINED);
133 list = fontify_atom (metric, list);
135 return Molecule (metric->text_dimension (ly_scm2string (text)), list);
139 Text_item::markup_sentence2molecule (Score_element *me, SCM markup_sentence,
142 SCM markup = gh_car (markup_sentence);
143 SCM sentence = gh_cdr (markup_sentence);
144 SCM f = get_elt_property (me, "markup-to-properties");
145 SCM p = gh_append2 (gh_call1 (f, markup), properties);
148 SCM a = scm_assoc (ly_symbol2scm ("align"), p);
149 if (gh_pair_p (a) && gh_number_p (gh_cdr (a)))
150 align = (Axis)gh_scm2int (gh_cdr (a));
152 Real staff_space = Staff_symbol_referencer::staff_space (me);
154 SCM k = scm_assoc (ly_symbol2scm ("kern"), p);
155 if (gh_pair_p (k) && gh_number_p (gh_cdr (k)))
156 kern = gh_scm2double (gh_cdr (k)) * staff_space;
159 SCM r = scm_assoc (ly_symbol2scm ("raise"), p);
160 if (gh_pair_p (r) && gh_number_p (gh_cdr (r)))
161 raise = gh_scm2double (gh_cdr (r)) * staff_space;
163 Offset o (align == X_AXIS ? kern : 0,
164 (align == Y_AXIS ? - kern : 0) + raise);
167 while (gh_pair_p (sentence))
169 Molecule m = text2molecule (me, gh_car (sentence), p);
173 mol.add_at_edge (align, align == X_AXIS ? RIGHT : DOWN, m, 0);
175 sentence = gh_cdr (sentence);
180 MAKE_SCHEME_CALLBACK (Text_item, brew_molecule, 1);
182 Text_item::brew_molecule (SCM smob)
184 Score_element *me = unsmob_element (smob);
186 SCM text = me->get_elt_property ("text");
188 SCM properties = gh_append2 (me->immutable_property_alist_,
189 me->mutable_property_alist_);
191 Molecule mol = Text_item::text2molecule (me, text, properties);
193 SCM space = me->get_elt_property ("word-space");
194 if (gh_number_p (space))
198 mol.add_at_edge (X_AXIS, RIGHT, m, gh_scm2double (space)
199 * Staff_symbol_referencer::staff_space (me));
201 return mol.create_scheme ();