1 /* Pango
2 * pangocairo-fontmap.c: Cairo font handling, fontconfig backend
3 *
4 * Copyright (C) 2000-2005 Red Hat Software
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library 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 GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
20 */
21 #include "config.h"
22
23 /* Freetype has undefined macros in its headers */
24 #pragma GCC diagnostic push
25 #pragma GCC diagnostic ignored "-Wundef"
26 #include <cairo-ft.h>
27 #pragma GCC diagnostic pop
28
29 #include "pangofc-fontmap-private.h"
30 #include "pangocairo.h"
31 #include "pangocairo-private.h"
32 #include "pangocairo-fc-private.h"
33
34 typedef struct _PangoCairoFcFontMapClass PangoCairoFcFontMapClass;
35
36 struct _PangoCairoFcFontMapClass
37 {
38 PangoFcFontMapClass parent_class;
39 };
40
41 static guint
pango_cairo_fc_font_map_get_serial(PangoFontMap * fontmap)42 pango_cairo_fc_font_map_get_serial (PangoFontMap *fontmap)
43 {
44 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (fontmap);
45
46 return cffontmap->serial;
47 }
48
49 static void
pango_cairo_fc_font_map_changed(PangoFontMap * fontmap)50 pango_cairo_fc_font_map_changed (PangoFontMap *fontmap)
51 {
52 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (fontmap);
53
54 cffontmap->serial++;
55 if (cffontmap->serial == 0)
56 cffontmap->serial++;
57 }
58
59 static void
pango_cairo_fc_font_map_set_resolution(PangoCairoFontMap * cfontmap,double dpi)60 pango_cairo_fc_font_map_set_resolution (PangoCairoFontMap *cfontmap,
61 double dpi)
62 {
63 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (cfontmap);
64
65 if (dpi != cffontmap->dpi)
66 {
67 cffontmap->serial++;
68 if (cffontmap->serial == 0)
69 cffontmap->serial++;
70 cffontmap->dpi = dpi;
71
72 pango_fc_font_map_cache_clear ((PangoFcFontMap *) (cfontmap));
73 }
74 }
75
76 static double
pango_cairo_fc_font_map_get_resolution_cairo(PangoCairoFontMap * cfontmap)77 pango_cairo_fc_font_map_get_resolution_cairo (PangoCairoFontMap *cfontmap)
78 {
79 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (cfontmap);
80
81 return cffontmap->dpi;
82 }
83
84 static cairo_font_type_t
pango_cairo_fc_font_map_get_font_type(PangoCairoFontMap * cfontmap G_GNUC_UNUSED)85 pango_cairo_fc_font_map_get_font_type (PangoCairoFontMap *cfontmap G_GNUC_UNUSED)
86 {
87 return CAIRO_FONT_TYPE_FT;
88 }
89
90 static void
cairo_font_map_iface_init(PangoCairoFontMapIface * iface)91 cairo_font_map_iface_init (PangoCairoFontMapIface *iface)
92 {
93 iface->set_resolution = pango_cairo_fc_font_map_set_resolution;
94 iface->get_resolution = pango_cairo_fc_font_map_get_resolution_cairo;
95 iface->get_font_type = pango_cairo_fc_font_map_get_font_type;
96 }
97
98 G_DEFINE_TYPE_WITH_CODE (PangoCairoFcFontMap, pango_cairo_fc_font_map, PANGO_TYPE_FC_FONT_MAP,
99 { G_IMPLEMENT_INTERFACE (PANGO_TYPE_CAIRO_FONT_MAP, cairo_font_map_iface_init) })
100
101 static void
pango_cairo_fc_font_map_fontset_key_substitute(PangoFcFontMap * fcfontmap G_GNUC_UNUSED,PangoFcFontsetKey * fontkey,FcPattern * pattern)102 pango_cairo_fc_font_map_fontset_key_substitute (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
103 PangoFcFontsetKey *fontkey,
104 FcPattern *pattern)
105 {
106 FcConfigSubstitute (pango_fc_font_map_get_config (fcfontmap), pattern, FcMatchPattern);
107
108 if (fcfontmap->substitute_func)
109 fcfontmap->substitute_func (pattern, fcfontmap->substitute_data);
110 if (fontkey)
111 cairo_ft_font_options_substitute (pango_fc_fontset_key_get_context_key (fontkey),
112 pattern);
113
114 FcDefaultSubstitute (pattern);
115 }
116
117 static double
pango_cairo_fc_font_map_get_resolution_fc(PangoFcFontMap * fcfontmap,PangoContext * context)118 pango_cairo_fc_font_map_get_resolution_fc (PangoFcFontMap *fcfontmap,
119 PangoContext *context)
120 {
121 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (fcfontmap);
122 double dpi;
123
124 if (context)
125 {
126 dpi = pango_cairo_context_get_resolution (context);
127
128 if (dpi <= 0)
129 dpi = cffontmap->dpi;
130 }
131 else
132 dpi = cffontmap->dpi;
133
134 return dpi;
135 }
136
137 static gconstpointer
pango_cairo_fc_font_map_context_key_get(PangoFcFontMap * fcfontmap G_GNUC_UNUSED,PangoContext * context)138 pango_cairo_fc_font_map_context_key_get (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
139 PangoContext *context)
140 {
141 return _pango_cairo_context_get_merged_font_options (context);
142 }
143
144 static gpointer
pango_cairo_fc_font_map_context_key_copy(PangoFcFontMap * fcfontmap G_GNUC_UNUSED,gconstpointer key)145 pango_cairo_fc_font_map_context_key_copy (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
146 gconstpointer key)
147 {
148 return cairo_font_options_copy (key);
149 }
150
151 static void
pango_cairo_fc_font_map_context_key_free(PangoFcFontMap * fcfontmap G_GNUC_UNUSED,gpointer key)152 pango_cairo_fc_font_map_context_key_free (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
153 gpointer key)
154 {
155 cairo_font_options_destroy (key);
156 }
157
158
159 static guint32
pango_cairo_fc_font_map_context_key_hash(PangoFcFontMap * fcfontmap G_GNUC_UNUSED,gconstpointer key)160 pango_cairo_fc_font_map_context_key_hash (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
161 gconstpointer key)
162 {
163 return (guint32)cairo_font_options_hash (key);
164 }
165
166 static gboolean
pango_cairo_fc_font_map_context_key_equal(PangoFcFontMap * fcfontmap G_GNUC_UNUSED,gconstpointer key_a,gconstpointer key_b)167 pango_cairo_fc_font_map_context_key_equal (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
168 gconstpointer key_a,
169 gconstpointer key_b)
170 {
171 return cairo_font_options_equal (key_a, key_b);
172 }
173
174 static PangoFcFont *
pango_cairo_fc_font_map_create_font(PangoFcFontMap * fcfontmap,PangoFcFontKey * key)175 pango_cairo_fc_font_map_create_font (PangoFcFontMap *fcfontmap,
176 PangoFcFontKey *key)
177 {
178 return _pango_cairo_fc_font_new ((PangoCairoFcFontMap *) (fcfontmap),
179 key);
180 }
181
182 static void
pango_cairo_fc_font_map_class_init(PangoCairoFcFontMapClass * class)183 pango_cairo_fc_font_map_class_init (PangoCairoFcFontMapClass *class)
184 {
185 PangoFontMapClass *fontmap_class = PANGO_FONT_MAP_CLASS (class);
186 PangoFcFontMapClass *fcfontmap_class = PANGO_FC_FONT_MAP_CLASS (class);
187
188 fontmap_class->get_serial = pango_cairo_fc_font_map_get_serial;
189 fontmap_class->changed = pango_cairo_fc_font_map_changed;
190
191 fcfontmap_class->fontset_key_substitute = pango_cairo_fc_font_map_fontset_key_substitute;
192 fcfontmap_class->get_resolution = pango_cairo_fc_font_map_get_resolution_fc;
193
194 fcfontmap_class->context_key_get = pango_cairo_fc_font_map_context_key_get;
195 fcfontmap_class->context_key_copy = pango_cairo_fc_font_map_context_key_copy;
196 fcfontmap_class->context_key_free = pango_cairo_fc_font_map_context_key_free;
197 fcfontmap_class->context_key_hash = pango_cairo_fc_font_map_context_key_hash;
198 fcfontmap_class->context_key_equal = pango_cairo_fc_font_map_context_key_equal;
199
200 fcfontmap_class->create_font = pango_cairo_fc_font_map_create_font;
201 }
202
203 static void
pango_cairo_fc_font_map_init(PangoCairoFcFontMap * cffontmap)204 pango_cairo_fc_font_map_init (PangoCairoFcFontMap *cffontmap)
205 {
206 cffontmap->serial = 1;
207 cffontmap->dpi = 96.0;
208 }
209