1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
|
/* Pango
* pango-fontmap.c: Font handling
*
* Copyright (C) 2000 Red Hat Software
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "pango-fontmap.h"
#include "pango-utils.h"
#include <stdlib.h>
static void pango_font_map_class_init (PangoFontMapClass *class);
static PangoFontset *pango_font_map_real_load_fontset (PangoFontMap *fontmap,
PangoContext *context,
const PangoFontDescription *desc,
PangoLanguage *language);
GType
pango_font_map_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (PangoFontMapClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) pango_font_map_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (PangoFontMap),
0, /* n_preallocs */
NULL /* init */
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"PangoFontMap",
&object_info, 0);
}
return object_type;
}
static void
pango_font_map_class_init (PangoFontMapClass *class)
{
class->load_fontset = pango_font_map_real_load_fontset;
}
/**
* pango_font_map_load_font:
* @fontmap: a #PangoFontMap
* @context: the #PangoContext the font will be used with
* @desc: a #PangoFontDescription describing the font to load
*
* Load the font in the fontmap that is the closest match for @desc.
*
* Returns the font loaded, or %NULL if no font matched.
**/
PangoFont *
pango_font_map_load_font (PangoFontMap *fontmap,
PangoContext *context,
const PangoFontDescription *desc)
{
g_return_val_if_fail (fontmap != NULL, NULL);
return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_font (fontmap, context, desc);
}
/**
* pango_font_map_list_families:
* @fontmap: a #PangoFontMap
* @families: location to store a pointer to an array of PangoFontFamily *.
* This array should be freed with g_free().
* @n_families: location to store the number of elements in @descs
*
* List all families for a fontmap.
**/
void
pango_font_map_list_families (PangoFontMap *fontmap,
PangoFontFamily ***families,
int *n_families)
{
g_return_if_fail (fontmap != NULL);
PANGO_FONT_MAP_GET_CLASS (fontmap)->list_families (fontmap, families, n_families);
}
/**
* pango_font_map_load_fontset:
* @fontmap: a #PangoFontMap
* @context: the #PangoContext the font will be used with
* @desc: a #PangoFontDescription describing the font to load
* @language: a #PangoLanguage the fonts will be used for
*
* Load a set of fonts in the fontmap that can be used to render
* a font matching @desc.
*
* Returns the fontset, or %NULL if no font matched.
**/
PangoFontset *
pango_font_map_load_fontset (PangoFontMap *fontmap,
PangoContext *context,
const PangoFontDescription *desc,
PangoLanguage *language)
{
g_return_val_if_fail (fontmap != NULL, NULL);
g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL);
return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_fontset (fontmap, context, desc, language);
}
static void
pango_font_map_fontset_add_fonts (PangoFontMap *fontmap,
PangoContext *context,
PangoFontsetSimple *fonts,
PangoFontDescription *desc,
char *family)
{
char **aliases;
int n_aliases;
int j;
PangoFont *font;
pango_lookup_aliases (family,
&aliases,
&n_aliases);
if (n_aliases)
{
for (j = 0; j < n_aliases; j++)
{
pango_font_description_set_family_static (desc, aliases[j]);
font = pango_font_map_load_font (fontmap, context, desc);
if (font)
pango_fontset_simple_append (fonts, font);
}
}
else
{
pango_font_description_set_family_static (desc, family);
font = pango_font_map_load_font (fontmap, context, desc);
if (font)
pango_fontset_simple_append (fonts, font);
}
}
static PangoFontset *
pango_font_map_real_load_fontset (PangoFontMap *fontmap,
PangoContext *context,
const PangoFontDescription *desc,
PangoLanguage *language)
{
PangoFontDescription *tmp_desc = pango_font_description_copy_static (desc);
char **families;
int i;
PangoFontsetSimple *fonts;
families = g_strsplit (pango_font_description_get_family (desc), ",", -1);
fonts = pango_fontset_simple_new (language);
for (i = 0; families[i]; i++)
pango_font_map_fontset_add_fonts (fontmap,
context,
fonts,
tmp_desc,
families[i]);
g_strfreev (families);
/* The font description was completely unloadable, try with
* family == "Sans"
*/
if (pango_fontset_simple_size (fonts) == 0)
{
char *ctmp1, *ctmp2;
pango_font_description_set_family_static (tmp_desc,
pango_font_description_get_family (desc));
ctmp1 = pango_font_description_to_string (desc);
pango_font_description_set_family_static (tmp_desc, "Sans");
ctmp2 = pango_font_description_to_string (tmp_desc);
g_warning ("Couldn't load font \"%s\" falling back to \"%s\"", ctmp1, ctmp2);
g_free (ctmp1);
g_free (ctmp2);
pango_font_map_fontset_add_fonts (fontmap,
context,
fonts,
tmp_desc,
"Sans");
}
/* We couldn't try with Sans and the specified style. Try Sans Normal
*/
if (pango_fontset_simple_size (fonts) == 0)
{
char *ctmp1, *ctmp2;
pango_font_description_set_family_static (tmp_desc, "Sans");
ctmp1 = pango_font_description_to_string (tmp_desc);
pango_font_description_set_style (tmp_desc, PANGO_STYLE_NORMAL);
pango_font_description_set_weight (tmp_desc, PANGO_WEIGHT_NORMAL);
pango_font_description_set_variant (tmp_desc, PANGO_VARIANT_NORMAL);
pango_font_description_set_stretch (tmp_desc, PANGO_STRETCH_NORMAL);
ctmp2 = pango_font_description_to_string (tmp_desc);
g_warning ("Couldn't load font \"%s\" falling back to \"%s\"", ctmp1, ctmp2);
g_free (ctmp1);
g_free (ctmp2);
pango_font_map_fontset_add_fonts (fontmap,
context,
fonts,
tmp_desc,
"Sans");
}
pango_font_description_free (tmp_desc);
/* Everything failed, we are screwed, there is no way to continue
*/
if (pango_fontset_simple_size (fonts) == 0)
{
g_warning ("All font failbacks failed!!!!");
exit (1);
}
return PANGO_FONTSET (fonts);
}
/**
* pango_font_map_get_shape_engine_type:
* @fontmap: a #PangoFontmap
*
* Returns the render ID for shape engines for this fontmap.
* See the <structfield>render_type</structfield> field of
* #PangoEngineInfo.
*
* Return value: the ID string for shape engines for
* this fontmap. Owned by Pango, should not be modified
* or freed.
**/
const char *
pango_font_map_get_shape_engine_type (PangoFontMap *fontmap)
{
g_return_val_if_fail (PANGO_IS_FONT_MAP (fontmap), NULL);
return PANGO_FONT_MAP_GET_CLASS (fontmap)->shape_engine_type;
}
|
