/***************************************************************************/ | |
/* */ | |
/* cffcmap.c */ | |
/* */ | |
/* CFF character mapping table (cmap) support (body). */ | |
/* */ | |
/* Copyright 2002-2015 by */ | |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
/* */ | |
/* This file is part of the FreeType project, and may only be used, */ | |
/* modified, and distributed under the terms of the FreeType project */ | |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
/* this file you indicate that you have read the license and */ | |
/* understand and accept it fully. */ | |
/* */ | |
/***************************************************************************/ | |
#include <ft2build.h> | |
#include FT_INTERNAL_DEBUG_H | |
#include "cffcmap.h" | |
#include "cffload.h" | |
#include "cfferrs.h" | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/***** *****/ | |
/***** CFF STANDARD (AND EXPERT) ENCODING CMAPS *****/ | |
/***** *****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
FT_CALLBACK_DEF( FT_Error ) | |
cff_cmap_encoding_init( CFF_CMapStd cmap, | |
FT_Pointer pointer ) | |
{ | |
TT_Face face = (TT_Face)FT_CMAP_FACE( cmap ); | |
CFF_Font cff = (CFF_Font)face->extra.data; | |
CFF_Encoding encoding = &cff->encoding; | |
FT_UNUSED( pointer ); | |
cmap->gids = encoding->codes; | |
return 0; | |
} | |
FT_CALLBACK_DEF( void ) | |
cff_cmap_encoding_done( CFF_CMapStd cmap ) | |
{ | |
cmap->gids = NULL; | |
} | |
FT_CALLBACK_DEF( FT_UInt ) | |
cff_cmap_encoding_char_index( CFF_CMapStd cmap, | |
FT_UInt32 char_code ) | |
{ | |
FT_UInt result = 0; | |
if ( char_code < 256 ) | |
result = cmap->gids[char_code]; | |
return result; | |
} | |
FT_CALLBACK_DEF( FT_UInt32 ) | |
cff_cmap_encoding_char_next( CFF_CMapStd cmap, | |
FT_UInt32 *pchar_code ) | |
{ | |
FT_UInt result = 0; | |
FT_UInt32 char_code = *pchar_code; | |
*pchar_code = 0; | |
if ( char_code < 255 ) | |
{ | |
FT_UInt code = (FT_UInt)(char_code + 1); | |
for (;;) | |
{ | |
if ( code >= 256 ) | |
break; | |
result = cmap->gids[code]; | |
if ( result != 0 ) | |
{ | |
*pchar_code = code; | |
break; | |
} | |
code++; | |
} | |
} | |
return result; | |
} | |
FT_DEFINE_CMAP_CLASS(cff_cmap_encoding_class_rec, | |
sizeof ( CFF_CMapStdRec ), | |
(FT_CMap_InitFunc) cff_cmap_encoding_init, | |
(FT_CMap_DoneFunc) cff_cmap_encoding_done, | |
(FT_CMap_CharIndexFunc)cff_cmap_encoding_char_index, | |
(FT_CMap_CharNextFunc) cff_cmap_encoding_char_next, | |
NULL, NULL, NULL, NULL, NULL | |
) | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/***** *****/ | |
/***** CFF SYNTHETIC UNICODE ENCODING CMAP *****/ | |
/***** *****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
FT_CALLBACK_DEF( const char* ) | |
cff_sid_to_glyph_name( TT_Face face, | |
FT_UInt idx ) | |
{ | |
CFF_Font cff = (CFF_Font)face->extra.data; | |
CFF_Charset charset = &cff->charset; | |
FT_UInt sid = charset->sids[idx]; | |
return cff_index_get_sid_string( cff, sid ); | |
} | |
FT_CALLBACK_DEF( FT_Error ) | |
cff_cmap_unicode_init( PS_Unicodes unicodes, | |
FT_Pointer pointer ) | |
{ | |
TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); | |
FT_Memory memory = FT_FACE_MEMORY( face ); | |
CFF_Font cff = (CFF_Font)face->extra.data; | |
CFF_Charset charset = &cff->charset; | |
FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; | |
FT_UNUSED( pointer ); | |
/* can't build Unicode map for CID-keyed font */ | |
/* because we don't know glyph names. */ | |
if ( !charset->sids ) | |
return FT_THROW( No_Unicode_Glyph_Name ); | |
return psnames->unicodes_init( memory, | |
unicodes, | |
cff->num_glyphs, | |
(PS_GetGlyphNameFunc)&cff_sid_to_glyph_name, | |
(PS_FreeGlyphNameFunc)NULL, | |
(FT_Pointer)face ); | |
} | |
FT_CALLBACK_DEF( void ) | |
cff_cmap_unicode_done( PS_Unicodes unicodes ) | |
{ | |
FT_Face face = FT_CMAP_FACE( unicodes ); | |
FT_Memory memory = FT_FACE_MEMORY( face ); | |
FT_FREE( unicodes->maps ); | |
unicodes->num_maps = 0; | |
} | |
FT_CALLBACK_DEF( FT_UInt ) | |
cff_cmap_unicode_char_index( PS_Unicodes unicodes, | |
FT_UInt32 char_code ) | |
{ | |
TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); | |
CFF_Font cff = (CFF_Font)face->extra.data; | |
FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; | |
return psnames->unicodes_char_index( unicodes, char_code ); | |
} | |
FT_CALLBACK_DEF( FT_UInt32 ) | |
cff_cmap_unicode_char_next( PS_Unicodes unicodes, | |
FT_UInt32 *pchar_code ) | |
{ | |
TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); | |
CFF_Font cff = (CFF_Font)face->extra.data; | |
FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; | |
return psnames->unicodes_char_next( unicodes, pchar_code ); | |
} | |
FT_DEFINE_CMAP_CLASS(cff_cmap_unicode_class_rec, | |
sizeof ( PS_UnicodesRec ), | |
(FT_CMap_InitFunc) cff_cmap_unicode_init, | |
(FT_CMap_DoneFunc) cff_cmap_unicode_done, | |
(FT_CMap_CharIndexFunc)cff_cmap_unicode_char_index, | |
(FT_CMap_CharNextFunc) cff_cmap_unicode_char_next, | |
NULL, NULL, NULL, NULL, NULL | |
) | |
/* END */ |