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: markup-symbol | (markup-symbol . parameter)
24 sentence: text | sentence text
31 ------* Series: medium, bold
32 ------* Shape: upright, italic, slanted
33 ------* Family: roman, music, orator, typewriter
36 ------* size: ...,-2,-1,0,1,2,... (style-sheet -> cmrXX, fetaXX)
37 ------* points: 11,13,16,20,23,26 (for feta)
38 ------* magnification: UNSIGNED
41 ---* kern: INT (staff-space)
42 ---* align: horizontal/vertical / lines / rows
45 Text_item::text2molecule (Score_element *me, SCM text, SCM properties)
47 if (gh_string_p (text))
48 return string2molecule (me, text, properties);
49 else if (gh_list_p (text))
51 if (!gh_pair_p (gh_car (text)) && gh_string_p (gh_car (text)))
52 return string2molecule (me, gh_car (text), properties);
54 return markup_sentence2molecule (me, text, properties);
61 get_elt_property (Score_element *me, char const *name)
63 SCM s = me->get_elt_property (name);
65 error (_f ("No `%s' defined for %s", name, me->name ()));
70 Text_item::string2molecule (Score_element *me, SCM text, SCM properties)
72 SCM style = scm_assoc (ly_symbol2scm ("font-style"), properties);
73 SCM paper = me->get_elt_property ("style-sheet");
75 paper = scm_string_to_symbol (me->paper_l ()->get_scmvar ("style_sheet"));
78 if (gh_pair_p (style))
80 SCM f = get_elt_property (me, "style-to-font-name");
81 font_name = gh_call2 (f, paper, gh_cdr (style));
85 SCM f = get_elt_property (me, "properties-to-font-name");
86 font_name = gh_call2 (f, paper, properties);
89 // should move fallback to scm
90 if (!gh_string_p (font_name))
91 font_name = ly_str02scm ("cmr10");
93 SCM lookup = scm_assoc (ly_symbol2scm ("lookup"), properties);
96 if (gh_pair_p (lookup) && ly_symbol2string (gh_cdr (lookup)) == "name")
97 mol = lookup_character (me, font_name, text);
99 mol = lookup_text (me, font_name, text);
105 caching / use some form of Lookup without 'paper'?
108 Text_item::lookup_character (Score_element *me, SCM font_name, SCM char_name)
110 Adobe_font_metric *afm = all_fonts_global_p->find_afm (ly_scm2string (font_name));
114 warning (_f ("can't find font: `%s'", ly_scm2string (font_name)));
115 warning (_f ("(search path: `%s')", global_path.str ().ch_C()));
116 error (_ ("Aborting"));
119 AFM_CharMetricInfo const *metric =
120 afm->find_char_metric (ly_scm2string (char_name), true);
129 SCM list = gh_list (ly_symbol2scm ("char"),
130 gh_int2scm (metric->code),
133 list = fontify_atom (afm, list);
134 return Molecule (afm_bbox_to_box (metric->charBBox), list);
138 Text_item::lookup_text (Score_element *me, SCM font_name, SCM text)
140 SCM magnification = me->get_elt_property ("font-magnification");
141 Font_metric* metric = 0;
142 if (gh_number_p (magnification))
143 metric = all_fonts_global_p->find_scaled (ly_scm2string (font_name),
144 gh_scm2int (magnification));
146 metric = all_fonts_global_p->find_font (ly_scm2string (font_name));
148 SCM list = gh_list (ly_symbol2scm ("text"), text, SCM_UNDEFINED);
149 list = fontify_atom (metric, list);
151 return Molecule (metric->text_dimension (ly_scm2string (text)), list);
155 Text_item::markup_sentence2molecule (Score_element *me, SCM markup_sentence,
158 SCM markup = gh_car (markup_sentence);
159 SCM sentence = gh_cdr (markup_sentence);
160 SCM f = get_elt_property (me, "markup-to-properties");
161 SCM p = gh_append2 (gh_call1 (f, markup), properties);
164 SCM a = scm_assoc (ly_symbol2scm ("align"), p);
165 if (gh_pair_p (a) && gh_number_p (gh_cdr (a)))
166 align = (Axis)gh_scm2int (gh_cdr (a));
168 Real staff_space = Staff_symbol_referencer::staff_space (me);
170 SCM k = scm_assoc (ly_symbol2scm ("kern"), p);
171 if (gh_pair_p (k) && gh_number_p (gh_cdr (k)))
172 kern = gh_scm2double (gh_cdr (k)) * staff_space;
175 SCM r = scm_assoc (ly_symbol2scm ("raise"), p);
176 if (gh_pair_p (r) && gh_number_p (gh_cdr (r)))
177 raise = gh_scm2double (gh_cdr (r)) * staff_space;
179 Offset o (align == X_AXIS ? kern : 0,
180 (align == Y_AXIS ? - kern : 0) + raise);
183 while (gh_pair_p (sentence))
185 Molecule m = text2molecule (me, gh_car (sentence), p);
189 mol.add_at_edge (align, align == X_AXIS ? RIGHT : DOWN, m, 0);
191 sentence = gh_cdr (sentence);
196 MAKE_SCHEME_CALLBACK (Text_item, brew_molecule, 1);
198 Text_item::brew_molecule (SCM smob)
200 Score_element *me = unsmob_element (smob);
202 SCM text = me->get_elt_property ("text");
204 SCM properties = gh_append2 (me->immutable_property_alist_,
205 me->mutable_property_alist_);
207 Molecule mol = Text_item::text2molecule (me, text, properties);
209 SCM space = me->get_elt_property ("word-space");
210 if (gh_number_p (space))
214 mol.add_at_edge (X_AXIS, RIGHT, m, gh_scm2double (space)
215 * Staff_symbol_referencer::staff_space (me));
217 return mol.create_scheme ();