2 font-interface.cc -- implement Font_interface
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "all-font-metrics.hh"
11 #include "font-metric.hh"
12 #include "font-interface.hh"
14 #include "paper-def.hh"
19 TODO revise font handling.
22 * relative sizes should relate to staff-space, eg. font-staff-space
25 * If a relative size is given, lily should magnify the closest
26 design size font to match that. (ie. fonts should have variable
29 (this requires that fonts are stored as (filename , designsize))
36 Font_interface::font_alist_chain (Grob *me)
38 SCM defaults = gh_cdr (scm_assoc (ly_symbol2scm ("font-defaults"),
39 me->paper_l ()->style_sheet_));
41 SCM ch = gh_list (me->mutable_property_alist_,
42 me->immutable_property_alist_,
50 todo: split up this func, reuse in text_item?
53 Font_interface::get_default_font (Grob*me)
55 Font_metric * fm = unsmob_metrics (me->get_grob_property ("font"));
59 fm = get_font (me, font_alist_chain (me));
60 me->set_grob_property ("font", fm->self_scm ());
66 ly_font_interface_get_default_font (SCM grob)
68 Grob * gr = unsmob_grob (grob);
72 warning ("ly_font_interface_get_default_font (): invalid argument");
76 return Font_interface::get_default_font (gr)->self_scm ();
80 Font_interface::get_font (Grob *me, SCM chain)
83 SCM ss = me->paper_l ()->style_sheet_;
85 SCM proc = gh_cdr (scm_assoc (ly_symbol2scm ("properties-to-font"),
88 SCM fonts = gh_cdr (scm_assoc (ly_symbol2scm ("fonts"), ss));
90 assert (gh_procedure_p (proc));
91 SCM font_name = gh_call2 (proc, fonts, chain);
93 Font_metric *fm = me->paper_l ()->find_font (font_name, 1.0);
98 Font_interface::add_style (Grob* me, SCM style, SCM chain)
100 assert (gh_symbol_p (style));
102 SCM sheet = me->paper_l ()->style_sheet_;
104 SCM style_alist = gh_cdr (scm_assoc (ly_symbol2scm ("style-alist"), sheet));
105 SCM entry = scm_assoc (style, style_alist);
106 if (gh_pair_p (entry))
108 chain = gh_cons (gh_cdr (entry), chain);
116 Interpreting music...
117 MIDI output to wtk1-fugue2.midi...
133 static SCM name_sym, shape_sym, family_sym, series_sym, rel_sz_sym, design_sz_sym, wild_sym;
139 name_sym = scm_permanent_object (ly_symbol2scm ("font-name"));
140 shape_sym = scm_permanent_object (ly_symbol2scm ("font-shape"));
141 family_sym = scm_permanent_object (ly_symbol2scm ("font-family"));
142 series_sym = scm_permanent_object (ly_symbol2scm ("font-series"));
143 rel_sz_sym = scm_permanent_object (ly_symbol2scm ("font-relative-size"));
144 design_sz_sym = scm_permanent_object (ly_symbol2scm ("font-design-size"));
145 wild_sym = scm_permanent_object (ly_symbol2scm ("*"));
147 scm_c_define_gsubr ("ly-get-default-font", 1 , 0, 0,
148 (Scheme_function_unknown) ly_font_interface_get_default_font);
153 Font_interface::wild_compare (SCM field_val, SCM val)
155 return (val == SCM_BOOL_F || field_val == wild_sym || field_val == val);
158 ADD_SCM_INIT_FUNC (Font_interface_syms,init_syms);
161 MAKE_SCHEME_CALLBACK (Font_interface,properties_to_font_name,2);
163 Font_interface::properties_to_font_name (SCM fonts, SCM alist_chain)
165 SCM name = ly_assoc_chain (name_sym, alist_chain);
167 SCM shape = SCM_BOOL_F;
168 SCM family = SCM_BOOL_F;
169 SCM series = SCM_BOOL_F;
172 SCM point_sz = ly_assoc_chain (design_sz_sym, alist_chain);
173 SCM rel_sz = SCM_BOOL_F;
175 if (!gh_pair_p (name))
177 shape = ly_assoc_chain (shape_sym, alist_chain);
178 family = ly_assoc_chain (family_sym, alist_chain);
179 series = ly_assoc_chain (series_sym, alist_chain);
181 if (gh_pair_p (shape))
182 shape = gh_cdr (shape);
183 if (gh_pair_p (family))
184 family = gh_cdr (family);
185 if (gh_pair_p (series))
186 series = gh_cdr (series);
189 name = gh_cdr (name);
192 if (gh_pair_p (point_sz))
193 point_sz = gh_cdr (point_sz);
196 rel_sz = ly_assoc_chain (rel_sz_sym, alist_chain);
197 if (gh_pair_p (rel_sz))
198 rel_sz = gh_cdr (rel_sz);
201 for (SCM s = fonts ; gh_pair_p (s); s = gh_cdr (s))
203 SCM qlist = gh_caar (s);
205 if (name != SCM_BOOL_F)
207 if (!wild_compare (scm_list_ref (qlist, gh_int2scm (4)), name))
212 if (!wild_compare (scm_list_ref (qlist, gh_int2scm (1)), series))
214 if (!wild_compare (scm_list_ref (qlist, gh_int2scm (2)), shape))
216 if (!wild_compare (scm_list_ref (qlist, gh_int2scm (3)), family))
220 if (point_sz != SCM_BOOL_F)
222 // This if statement will always be true since name must
223 // be SCM_BOOL_F here, right? /MB
224 if (!wild_compare (scm_list_ref (qlist, gh_int2scm (4)), name))
229 if (!wild_compare (gh_car (qlist), rel_sz))
234 SCM qname = gh_cdar (s);
238 warning (_ ("couldn't find any font satisfying "));
239 scm_write (gh_list (name, point_sz, shape, series , family, rel_sz, SCM_UNDEFINED), scm_current_error_port ());
240 scm_flush (scm_current_error_port ());
242 return ly_str02scm ("cmr10");