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
34typedef struct _PangoCairoFcFontMapClass PangoCairoFcFontMapClass;
35
36struct _PangoCairoFcFontMapClass
37{
38 PangoFcFontMapClass parent_class;
39};
40
41static guint
42pango_cairo_fc_font_map_get_serial (PangoFontMap *fontmap)
43{
44 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (fontmap);
45
46 return cffontmap->serial;
47}
48
49static void
50pango_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
59static void
60pango_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 (fcfontmap: (PangoFcFontMap *) (cfontmap));
73 }
74}
75
76static double
77pango_cairo_fc_font_map_get_resolution_cairo (PangoCairoFontMap *cfontmap)
78{
79 PangoCairoFcFontMap *cffontmap = (PangoCairoFcFontMap *) (cfontmap);
80
81 return cffontmap->dpi;
82}
83
84static cairo_font_type_t
85pango_cairo_fc_font_map_get_font_type (PangoCairoFontMap *cfontmap G_GNUC_UNUSED)
86{
87 return CAIRO_FONT_TYPE_FT;
88}
89
90static void
91cairo_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
98G_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
101static void
102pango_cairo_fc_font_map_fontset_key_substitute (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
103 PangoFcFontsetKey *fontkey,
104 FcPattern *pattern)
105{
106 FcConfigSubstitute (config: pango_fc_font_map_get_config (fcfontmap), p: pattern, kind: FcMatchPattern);
107
108 if (fcfontmap->substitute_func)
109 fcfontmap->substitute_func (pattern, fcfontmap->substitute_data);
110 if (fontkey)
111 cairo_ft_font_options_substitute (options: pango_fc_fontset_key_get_context_key (key: fontkey),
112 pattern);
113
114 FcDefaultSubstitute (pattern);
115}
116
117static double
118pango_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
137static gconstpointer
138pango_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
144static gpointer
145pango_cairo_fc_font_map_context_key_copy (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
146 gconstpointer key)
147{
148 return cairo_font_options_copy (original: key);
149}
150
151static void
152pango_cairo_fc_font_map_context_key_free (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
153 gpointer key)
154{
155 cairo_font_options_destroy (options: key);
156}
157
158
159static guint32
160pango_cairo_fc_font_map_context_key_hash (PangoFcFontMap *fcfontmap G_GNUC_UNUSED,
161 gconstpointer key)
162{
163 return (guint32)cairo_font_options_hash (options: key);
164}
165
166static gboolean
167pango_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 (options: key_a, other: key_b);
172}
173
174static PangoFcFont *
175pango_cairo_fc_font_map_create_font (PangoFcFontMap *fcfontmap,
176 PangoFcFontKey *key)
177{
178 return _pango_cairo_fc_font_new (cffontmap: (PangoCairoFcFontMap *) (fcfontmap),
179 key);
180}
181
182static void
183pango_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
203static void
204pango_cairo_fc_font_map_init (PangoCairoFcFontMap *cffontmap)
205{
206 cffontmap->serial = 1;
207 cffontmap->dpi = 96.0;
208}
209

source code of gtk/subprojects/pango/pango/pangocairo-fcfontmap.c