[CMAKE]
[reactos.git] / lib / 3rdparty / freetype / src / cff / cffcmap.c
1 /***************************************************************************/
2 /* */
3 /* cffcmap.c */
4 /* */
5 /* CFF character mapping table (cmap) support (body). */
6 /* */
7 /* Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2010 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17
18
19 #include "cffcmap.h"
20 #include "cffload.h"
21
22 #include "cfferrs.h"
23
24
25 /*************************************************************************/
26 /*************************************************************************/
27 /***** *****/
28 /***** CFF STANDARD (AND EXPERT) ENCODING CMAPS *****/
29 /***** *****/
30 /*************************************************************************/
31 /*************************************************************************/
32
33 FT_CALLBACK_DEF( FT_Error )
34 cff_cmap_encoding_init( CFF_CMapStd cmap )
35 {
36 TT_Face face = (TT_Face)FT_CMAP_FACE( cmap );
37 CFF_Font cff = (CFF_Font)face->extra.data;
38 CFF_Encoding encoding = &cff->encoding;
39
40
41 cmap->gids = encoding->codes;
42
43 return 0;
44 }
45
46
47 FT_CALLBACK_DEF( void )
48 cff_cmap_encoding_done( CFF_CMapStd cmap )
49 {
50 cmap->gids = NULL;
51 }
52
53
54 FT_CALLBACK_DEF( FT_UInt )
55 cff_cmap_encoding_char_index( CFF_CMapStd cmap,
56 FT_UInt32 char_code )
57 {
58 FT_UInt result = 0;
59
60
61 if ( char_code < 256 )
62 result = cmap->gids[char_code];
63
64 return result;
65 }
66
67
68 FT_CALLBACK_DEF( FT_UInt32 )
69 cff_cmap_encoding_char_next( CFF_CMapStd cmap,
70 FT_UInt32 *pchar_code )
71 {
72 FT_UInt result = 0;
73 FT_UInt32 char_code = *pchar_code;
74
75
76 *pchar_code = 0;
77
78 if ( char_code < 255 )
79 {
80 FT_UInt code = (FT_UInt)(char_code + 1);
81
82
83 for (;;)
84 {
85 if ( code >= 256 )
86 break;
87
88 result = cmap->gids[code];
89 if ( result != 0 )
90 {
91 *pchar_code = code;
92 break;
93 }
94
95 code++;
96 }
97 }
98 return result;
99 }
100
101
102 FT_DEFINE_CMAP_CLASS(cff_cmap_encoding_class_rec,
103 sizeof ( CFF_CMapStdRec ),
104
105 (FT_CMap_InitFunc) cff_cmap_encoding_init,
106 (FT_CMap_DoneFunc) cff_cmap_encoding_done,
107 (FT_CMap_CharIndexFunc)cff_cmap_encoding_char_index,
108 (FT_CMap_CharNextFunc) cff_cmap_encoding_char_next,
109
110 NULL, NULL, NULL, NULL, NULL
111 )
112
113
114 /*************************************************************************/
115 /*************************************************************************/
116 /***** *****/
117 /***** CFF SYNTHETIC UNICODE ENCODING CMAP *****/
118 /***** *****/
119 /*************************************************************************/
120 /*************************************************************************/
121
122 FT_CALLBACK_DEF( const char* )
123 cff_sid_to_glyph_name( TT_Face face,
124 FT_UInt idx )
125 {
126 CFF_Font cff = (CFF_Font)face->extra.data;
127 CFF_Charset charset = &cff->charset;
128 FT_UInt sid = charset->sids[idx];
129
130
131 return cff_index_get_sid_string( cff, sid );
132 }
133
134
135 FT_CALLBACK_DEF( FT_Error )
136 cff_cmap_unicode_init( PS_Unicodes unicodes )
137 {
138 TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes );
139 FT_Memory memory = FT_FACE_MEMORY( face );
140 CFF_Font cff = (CFF_Font)face->extra.data;
141 CFF_Charset charset = &cff->charset;
142 FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames;
143
144
145 /* can't build Unicode map for CID-keyed font */
146 /* because we don't know glyph names. */
147 if ( !charset->sids )
148 return CFF_Err_No_Unicode_Glyph_Name;
149
150 return psnames->unicodes_init( memory,
151 unicodes,
152 cff->num_glyphs,
153 (PS_GetGlyphNameFunc)&cff_sid_to_glyph_name,
154 (PS_FreeGlyphNameFunc)NULL,
155 (FT_Pointer)face );
156 }
157
158
159 FT_CALLBACK_DEF( void )
160 cff_cmap_unicode_done( PS_Unicodes unicodes )
161 {
162 FT_Face face = FT_CMAP_FACE( unicodes );
163 FT_Memory memory = FT_FACE_MEMORY( face );
164
165
166 FT_FREE( unicodes->maps );
167 unicodes->num_maps = 0;
168 }
169
170
171 FT_CALLBACK_DEF( FT_UInt )
172 cff_cmap_unicode_char_index( PS_Unicodes unicodes,
173 FT_UInt32 char_code )
174 {
175 TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes );
176 CFF_Font cff = (CFF_Font)face->extra.data;
177 FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames;
178
179
180 return psnames->unicodes_char_index( unicodes, char_code );
181 }
182
183
184 FT_CALLBACK_DEF( FT_UInt32 )
185 cff_cmap_unicode_char_next( PS_Unicodes unicodes,
186 FT_UInt32 *pchar_code )
187 {
188 TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes );
189 CFF_Font cff = (CFF_Font)face->extra.data;
190 FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames;
191
192
193 return psnames->unicodes_char_next( unicodes, pchar_code );
194 }
195
196
197 FT_DEFINE_CMAP_CLASS(cff_cmap_unicode_class_rec,
198 sizeof ( PS_UnicodesRec ),
199
200 (FT_CMap_InitFunc) cff_cmap_unicode_init,
201 (FT_CMap_DoneFunc) cff_cmap_unicode_done,
202 (FT_CMap_CharIndexFunc)cff_cmap_unicode_char_index,
203 (FT_CMap_CharNextFunc) cff_cmap_unicode_char_next,
204
205 NULL, NULL, NULL, NULL, NULL
206 )
207
208 /* END */