2 all-font-metrics.cc -- implement All_font_metrics
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "all-font-metrics.hh"
11 #include "international.hh"
13 #include "open-type-font.hh"
14 #include "pango-font.hh"
15 #include "scm-hash.hh"
19 Index_to_charcode_map const *
20 All_font_metrics::get_index_to_charcode_map (string filename, FT_Face face)
22 if (filename_charcode_maps_map_.find (filename)
23 == filename_charcode_maps_map_.end ())
24 filename_charcode_maps_map_[filename] = make_index_to_charcode_map (face);
26 return &filename_charcode_maps_map_[filename];
30 All_font_metrics::All_font_metrics (string path)
32 otf_dict_ = new Scheme_hash_table;
35 PangoFontMap *pfm = pango_ft2_font_map_new ();
38 = G_TYPE_CHECK_INSTANCE_CAST (pfm,
39 PANGO_TYPE_FT2_FONT_MAP,
42 pango_ft2_font_map_set_resolution (pango_ft2_fontmap_,
43 pango_dpi_, pango_dpi_);
45 pango_dict_ = new Scheme_hash_table;
48 search_path_.parse_path (path);
51 All_font_metrics::~All_font_metrics ()
53 otf_dict_->unprotect ();
56 pango_dict_->unprotect ();
57 g_object_unref (pango_ft2_fontmap_);
61 All_font_metrics::All_font_metrics (All_font_metrics const &)
68 All_font_metrics::find_pango_font (PangoFontDescription *description,
73 pango_font_description_set_size (description,
75 pango_font_description_get_size (description)));
77 gchar *pango_fn = pango_font_description_to_filename (description);
78 SCM key = ly_symbol2scm (pango_fn);
81 if (!pango_dict_->try_retrieve (key, &val))
83 if (be_verbose_global)
84 progress_indication ("[" + string (pango_fn));
86 Pango_font *pf = new Pango_font (pango_ft2_fontmap_,
91 val = pf->self_scm ();
92 pango_dict_->set (key, val);
95 if (be_verbose_global)
96 progress_indication ("]");
98 pf->description_ = scm_cons (SCM_BOOL_F,
99 scm_from_double (1.0));
102 return dynamic_cast<Pango_font *> (unsmob_metrics (val));
108 kpathsea_find_file (string name, string ext)
111 string path = global_path.find (name);
112 if (path.length () > 0)
118 SCM module = scm_c_resolve_module ("scm kpathsea");
119 proc = scm_c_module_lookup (module, "ly:kpathsea-find-file");
120 proc = scm_variable_ref (proc);
123 if (ly_is_procedure (proc))
125 SCM kp_result = scm_call_1 (proc, scm_makfrom0str (name.c_str ()));
126 if (scm_is_string (kp_result))
127 return ly_scm2string (kp_result);
134 All_font_metrics::find_otf (string name)
136 SCM sname = ly_symbol2scm (name.c_str ());
137 SCM name_string = scm_makfrom0str (name.c_str ());
139 if (!otf_dict_->try_retrieve (sname, &val))
143 if (file_name.empty ())
144 file_name = search_path_.find (name + ".otf");
145 if (file_name.empty ())
148 if (be_verbose_global)
149 progress_indication ("[" + file_name);
151 val = Open_type_font::make_otf (file_name);
153 if (be_verbose_global)
154 progress_indication ("]");
156 unsmob_metrics (val)->file_name_ = file_name;
157 unsmob_metrics (val)->description_ = scm_cons (name_string,
158 scm_from_double (1.0));
159 otf_dict_->set (sname, val);
160 unsmob_metrics (val)->unprotect ();
163 return dynamic_cast<Open_type_font *> (unsmob_metrics (val));
167 All_font_metrics::find_font (string name)
169 Font_metric *f = find_otf (name);
173 error (_f ("cannot find font: `%s'", name.c_str ()));
179 All_font_metrics *all_fonts_global;
181 LY_DEFINE (ly_reset_all_fonts, "ly:reset-all-fonts", 0, 0, 0,
183 "Forget all about previously loaded fonts. ")
185 delete all_fonts_global;
186 all_fonts_global = new All_font_metrics (global_path.to_string ());
188 return SCM_UNSPECIFIED;
192 LY_DEFINE (ly_font_load, "ly:font-load", 1, 0, 0,
194 "Load the font @var{name}. ")
196 SCM_ASSERT_TYPE (scm_is_string (name), name, SCM_ARG1, __FUNCTION__, "string");
198 Font_metric *fm = all_fonts_global->find_font (ly_scm2string (name));
200 return fm->self_scm ();