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"
21 text: string | (markup sentence)
22 markup: markup-symbol | (markup-symbol . parameter)
23 sentence: text | sentence text
30 ------* Series: medium, bold
31 ------* Shape: upright, italic, slanted
32 ------* Family: roman, music, orator, typewriter
35 ------* size: ...,-2,-1,0,1,2,... (style-sheet -> cmrXX, fetaXX)
36 ------* points: 11,13,16,20,23,26 (for feta)
37 ------* magnification: UNSIGNED
40 ---* kern: INT (staff-space)
41 ---* align: horizontal/vertical / lines / rows
44 Text_item::text2molecule (Score_element *me, SCM text, SCM properties)
46 if (gh_string_p (text))
47 return string2molecule (me, text, properties);
48 else if (gh_list_p (text))
50 if (!gh_pair_p (gh_car (text)) && gh_string_p (gh_car (text)))
51 return string2molecule (me, gh_car (text), properties);
53 return markup_sentence2molecule (me, text, properties);
60 get_elt_property (Score_element *me, char const *name)
62 SCM s = me->get_elt_property (name);
64 error (_f ("No `%s' defined for %s", name, me->name ()));
69 Text_item::string2molecule (Score_element *me, SCM text, SCM properties)
71 SCM style = scm_assoc (ly_symbol2scm ("font-style"), properties);
72 SCM paper = me->get_elt_property ("style-sheet");
74 paper = scm_string_to_symbol (me->paper_l ()->get_scmvar ("style_sheet"));
77 if (gh_pair_p (style))
79 SCM f = get_elt_property (me, "style-to-font-name");
80 font_name = gh_call2 (f, paper, gh_cdr (style));
84 SCM f = get_elt_property (me, "properties-to-font-name");
85 font_name = gh_call2 (f, paper, properties);
88 // should move fallback to scm
89 if (!gh_string_p (font_name))
90 font_name = ly_str02scm ("cmr10");
92 SCM lookup = scm_assoc (ly_symbol2scm ("lookup"), properties);
95 if (gh_pair_p (lookup) && ly_symbol2string (gh_cdr (lookup)) == "name")
96 mol = lookup_character (me, font_name, text);
98 mol = lookup_text (me, font_name, text);
104 caching / use some form of Lookup without 'paper'?
107 Text_item::lookup_character (Score_element *me, SCM font_name, SCM char_name)
109 Adobe_font_metric *afm = all_fonts_global_p->find_afm (ly_scm2string (font_name));
113 warning (_f ("can't find font: `%s'", ly_scm2string (font_name)));
114 warning (_f ("(search path: `%s')", global_path.str ().ch_C()));
115 error (_ ("Aborting"));
118 AFM_CharMetricInfo const *metric =
119 afm->find_char_metric (ly_scm2string (char_name), true);
128 SCM list = gh_list (ly_symbol2scm ("char"),
129 gh_int2scm (metric->code),
132 list = fontify_atom (afm, list);
133 return Molecule (afm_bbox_to_box (metric->charBBox), list);
137 Text_item::lookup_text (Score_element *me, SCM font_name, SCM text)
139 SCM magnification = me->get_elt_property ("font-magnification");
140 Font_metric* metric = 0;
141 if (gh_number_p (magnification))
142 metric = all_fonts_global_p->find_scaled (ly_scm2string (font_name),
143 gh_scm2int (magnification));
145 metric = all_fonts_global_p->find_font (ly_scm2string (font_name));
147 SCM list = gh_list (ly_symbol2scm ("text"), text, SCM_UNDEFINED);
148 list = fontify_atom (metric, list);
150 return Molecule (metric->text_dimension (ly_scm2string (text)), list);
154 Text_item::markup_sentence2molecule (Score_element *me, SCM markup_sentence,
157 SCM markup = gh_car (markup_sentence);
158 SCM sentence = gh_cdr (markup_sentence);
159 SCM f = get_elt_property (me, "markup-to-properties");
160 SCM p = gh_append2 (gh_call1 (f, markup), properties);
163 SCM a = scm_assoc (ly_symbol2scm ("align"), p);
164 if (gh_pair_p (a) && gh_number_p (gh_cdr (a)))
165 align = (Axis)gh_scm2int (gh_cdr (a));
167 Real staff_space = Staff_symbol_referencer::staff_space (me);
169 SCM k = scm_assoc (ly_symbol2scm ("kern"), p);
170 if (gh_pair_p (k) && gh_number_p (gh_cdr (k)))
171 kern = gh_scm2double (gh_cdr (k)) * staff_space;
174 SCM r = scm_assoc (ly_symbol2scm ("raise"), p);
175 if (gh_pair_p (r) && gh_number_p (gh_cdr (r)))
176 raise = gh_scm2double (gh_cdr (r)) * staff_space;
178 Offset o (align == X_AXIS ? kern : 0,
179 (align == Y_AXIS ? - kern : 0) + raise);
182 while (gh_pair_p (sentence))
184 Molecule m = text2molecule (me, gh_car (sentence), p);
188 mol.add_at_edge (align, align == X_AXIS ? RIGHT : DOWN, m, 0);
190 sentence = gh_cdr (sentence);
195 MAKE_SCHEME_CALLBACK (Text_item, brew_molecule, 1);
197 Text_item::brew_molecule (SCM smob)
199 Score_element *me = unsmob_element (smob);
201 SCM text = me->get_elt_property ("text");
203 SCM properties = gh_append2 (me->immutable_property_alist_,
204 me->mutable_property_alist_);
206 Molecule mol = Text_item::text2molecule (me, text, properties);
208 SCM space = me->get_elt_property ("word-space");
209 if (gh_number_p (space))
213 mol.add_at_edge (X_AXIS, RIGHT, m, gh_scm2double (space)
214 * Staff_symbol_referencer::staff_space (me));
216 return mol.create_scheme ();