2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "dimensions.hh"
21 #include "all-font-metrics.hh"
22 #include "libc-extension.hh"
23 #include "output-def.hh"
24 #include "pango-font.hh"
26 PangoFontDescription *
27 properties_to_pango_description (SCM chain, Real text_size)
29 SCM name = ly_chain_assoc_get (ly_symbol2scm ("font-name"), chain, SCM_BOOL_F);
31 PangoFontDescription *description = 0;
32 if (scm_is_string (name))
34 string name_str = ly_scm2string (name);
35 description = pango_font_description_from_string (name_str.c_str ());
39 SCM family = ly_chain_assoc_get (ly_symbol2scm ("font-family"), chain,
41 SCM variant = ly_chain_assoc_get (ly_symbol2scm ("font-shape"), chain,
44 SCM style = ly_chain_assoc_get (ly_symbol2scm ("font-shape"), chain,
46 SCM weight = ly_chain_assoc_get (ly_symbol2scm ("font-series"), chain,
50 = symbols_to_pango_font_description (family, style, variant, weight,
54 Real step = robust_scm2double (ly_chain_assoc_get (ly_symbol2scm ("font-size"), chain, SCM_BOOL_F),
56 Real size = text_size * pow (2.0, step / 6.0);
58 pango_font_description_set_size (description,
59 gint (my_round (size * PANGO_SCALE)));
64 select_pango_font (Output_def *layout, SCM chain)
66 PangoFontDescription *pfd
67 = properties_to_pango_description (chain,
69 * layout->get_dimension (ly_symbol2scm ("text-font-size")));
71 char *str = pango_font_description_to_string (pfd);
72 SCM scm_str = scm_from_locale_string (str);
74 pango_font_description_free (pfd);
76 return find_pango_font (layout, scm_str, 1.0);
80 symbol_to_pango_style (SCM style)
82 PangoStyle pstyle = PANGO_STYLE_NORMAL;
83 if (scm_is_eq (style, ly_symbol2scm ("italic")))
84 pstyle = PANGO_STYLE_ITALIC;
85 else if (scm_is_eq (style, ly_symbol2scm ("oblique"))
86 || scm_is_eq (style, ly_symbol2scm ("slanted")))
87 pstyle = PANGO_STYLE_OBLIQUE;
93 symbol_to_pango_variant (SCM variant)
95 PangoVariant pvariant = PANGO_VARIANT_NORMAL;
96 if (scm_is_eq (variant, ly_symbol2scm ("caps")))
97 pvariant = PANGO_VARIANT_SMALL_CAPS;
102 symbol_to_pango_weight (SCM weight)
104 PangoWeight pw = PANGO_WEIGHT_NORMAL;
105 if (scm_is_eq (weight, ly_symbol2scm ("bold")))
106 pw = PANGO_WEIGHT_BOLD;
107 if (scm_is_eq (weight, ly_symbol2scm ("heavy")))
108 pw = PANGO_WEIGHT_HEAVY;
109 if (scm_is_eq (weight, ly_symbol2scm ("ultrabold")))
110 pw = PANGO_WEIGHT_ULTRABOLD;
111 if (scm_is_eq (weight, ly_symbol2scm ("light")))
112 pw = PANGO_WEIGHT_LIGHT;
113 if (scm_is_eq (weight, ly_symbol2scm ("ultralight")))
114 pw = PANGO_WEIGHT_ULTRALIGHT;
120 symbol_to_pango_stretch (SCM) // stretch)
122 PangoStretch ps = PANGO_STRETCH_NORMAL;
127 PANGO_STRETCH_ULTRA_CONDENSED,
128 PANGO_STRETCH_EXTRA_CONDENSED,
129 PANGO_STRETCH_CONDENSED,
130 PANGO_STRETCH_SEMI_CONDENSED,
132 PANGO_STRETCH_SEMI_EXPANDED,
133 PANGO_STRETCH_EXPANDED,
134 PANGO_STRETCH_EXTRA_EXPANDED,
135 PANGO_STRETCH_ULTRA_EXPANDED
140 PangoFontDescription *
141 symbols_to_pango_font_description (SCM family,
147 PangoFontDescription *description = pango_font_description_new ();
149 string family_str = "roman";
150 if (scm_is_symbol (family))
151 family_str = ly_symbol2string (family);
152 else if (scm_is_string (family))
153 family_str = ly_scm2string (family);
155 pango_font_description_set_family (description,
156 family_str.c_str ());
157 pango_font_description_set_style (description,
158 symbol_to_pango_style (style));
159 pango_font_description_set_variant (description,
160 symbol_to_pango_variant (variant));
161 pango_font_description_set_weight (description,
162 symbol_to_pango_weight (weight));
163 pango_font_description_set_stretch (description,
164 symbol_to_pango_stretch (stretch));