/***************************************************************************/ /* */ /* cidriver.c */ /* */ /* CID driver interface (body). */ /* */ /* Copyright 1996-2001, 2002 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 #include "cidriver.h" #include "cidgload.h" #include FT_INTERNAL_DEBUG_H #include FT_INTERNAL_STREAM_H #include FT_INTERNAL_POSTSCRIPT_NAMES_H #include "ciderrs.h" /*************************************************************************/ /* */ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ /* messages during execution. */ /* */ #undef FT_COMPONENT #define FT_COMPONENT trace_ciddriver static const char* cid_get_postscript_name( CID_Face face ) { const char* result = face->cid.cid_font_name; if ( result && result[0] == '/' ) result++; return result; } static FT_Module_Interface CID_Get_Interface( FT_Driver driver, const FT_String* cid_interface ) { FT_UNUSED( driver ); FT_UNUSED( cid_interface ); if ( ft_strcmp( (const char*)cid_interface, "postscript_name" ) == 0 ) return (FT_Module_Interface)cid_get_postscript_name; return 0; } #if 0 /* unimplemented yet */ static FT_Error cid_Get_Kerning( T1_Face face, FT_UInt left_glyph, FT_UInt right_glyph, FT_Vector* kerning ) { CID_AFM* afm; kerning->x = 0; kerning->y = 0; afm = (CID_AFM*)face->afm_data; if ( afm ) CID_Get_Kerning( afm, left_glyph, right_glyph, kerning ); return CID_Err_Ok; } #endif /* 0 */ /*************************************************************************/ /* */ /* */ /* Cid_Get_Char_Index */ /* */ /* */ /* Uses a charmap to return a given character code's glyph index. */ /* */ /* */ /* charmap :: A handle to the source charmap object. */ /* */ /* charcode :: The character code. */ /* */ /* */ /* Glyph index. 0 means `undefined character code'. */ /* */ static FT_UInt CID_Get_Char_Index( FT_CharMap charmap, FT_Long charcode ) { T1_Face face; FT_UInt result = 0; PSNames_Service psnames; face = (T1_Face)charmap->face; psnames = (PSNames_Service)face->psnames; if ( psnames ) switch ( charmap->encoding ) { /*******************************************************************/ /* */ /* Unicode encoding support */ /* */ case ft_encoding_unicode: /* use the `PSNames' module to synthetize the Unicode charmap */ result = psnames->lookup_unicode( &face->unicode_map, (FT_ULong)charcode ); /* the function returns 0xFFFF if the Unicode charcode has */ /* no corresponding glyph. */ if ( result == 0xFFFF ) result = 0; goto Exit; /*******************************************************************/ /* */ /* Custom Type 1 encoding */ /* */ case ft_encoding_adobe_custom: { T1_Encoding encoding = &face->type1.encoding; if ( charcode >= encoding->code_first && charcode <= encoding->code_last ) result = encoding->char_index[charcode]; goto Exit; } /*******************************************************************/ /* */ /* Adobe Standard & Expert encoding support */ /* */ default: if ( charcode < 256 ) { FT_UInt code; FT_Int n; const char* glyph_name; code = psnames->adobe_std_encoding[charcode]; if ( charmap->encoding == ft_encoding_adobe_expert ) code = psnames->adobe_expert_encoding[charcode]; glyph_name = psnames->adobe_std_strings( code ); if ( !glyph_name ) break; for ( n = 0; n < face->type1.num_glyphs; n++ ) { const char* gname = face->type1.glyph_names[n]; if ( gname && gname[0] == glyph_name[0] && ft_strcmp( gname, glyph_name ) == 0 ) { result = n; break; } } } } Exit: return result; } /*************************************************************************/ /* */ /* */ /* Cid_Get_Next_Char */ /* */ /* */ /* Uses a charmap to return the next encoded char after. */ /* */ /* */ /* charmap :: A handle to the source charmap object. */ /* */ /* charcode :: The character code. */ /* */ /* */ /* Next char code. 0 means `no more char codes'. */ /* */ static FT_Long CID_Get_Next_Char( FT_CharMap charmap, FT_Long charcode ) { T1_Face face; PSNames_Service psnames; face = (T1_Face)charmap->face; psnames = (PSNames_Service)face->psnames; if ( psnames ) switch ( charmap->encoding ) { /*******************************************************************/ /* */ /* Unicode encoding support */ /* */ case ft_encoding_unicode: /* use the `PSNames' module to synthetize the Unicode charmap */ return psnames->next_unicode (&face->unicode_map, (FT_ULong)charcode ); /*******************************************************************/ /* */ /* Custom Type 1 encoding */ /* */ case ft_encoding_adobe_custom: { T1_Encoding encoding = &face->type1.encoding; charcode++; if ( charcode < encoding->code_first ) charcode = encoding->code_first; while ( charcode <= encoding->code_last ) { if ( encoding->char_index[charcode] ) return charcode; charcode++; } } break; /*******************************************************************/ /* */ /* Adobe Standard & Expert encoding support */ /* */ default: while ( ++charcode < 256 ) { FT_UInt code; FT_Int n; const char* glyph_name; code = psnames->adobe_std_encoding[charcode]; if ( charmap->encoding == ft_encoding_adobe_expert ) code = psnames->adobe_expert_encoding[charcode]; glyph_name = psnames->adobe_std_strings( code ); if ( !glyph_name ) continue; for ( n = 0; n < face->type1.num_glyphs; n++ ) { const char* gname = face->type1.glyph_names[n]; if ( gname && gname[0] == glyph_name[0] && ft_strcmp( gname, glyph_name ) == 0 ) { return charcode; } } } } return 0; } FT_CALLBACK_TABLE_DEF const FT_Driver_ClassRec t1cid_driver_class = { /* first of all, the FT_Module_Class fields */ { ft_module_font_driver | ft_module_driver_scalable | ft_module_driver_has_hinter , sizeof( FT_DriverRec ), "t1cid", /* module name */ 0x10000L, /* version 1.0 of driver */ 0x20000L, /* requires FreeType 2.0 */ 0, (FT_Module_Constructor)CID_Driver_Init, (FT_Module_Destructor) CID_Driver_Done, (FT_Module_Requester) CID_Get_Interface }, /* then the other font drivers fields */ sizeof( CID_FaceRec ), sizeof( CID_SizeRec ), sizeof( CID_GlyphSlotRec ), (FT_Face_InitFunc) CID_Face_Init, (FT_Face_DoneFunc) CID_Face_Done, (FT_Size_InitFunc) CID_Size_Init, (FT_Size_DoneFunc) CID_Size_Done, (FT_Slot_InitFunc) CID_GlyphSlot_Init, (FT_Slot_DoneFunc) CID_GlyphSlot_Done, (FT_Size_ResetPointsFunc) CID_Size_Reset, (FT_Size_ResetPixelsFunc) CID_Size_Reset, (FT_Slot_LoadFunc) CID_Load_Glyph, (FT_CharMap_CharIndexFunc)CID_Get_Char_Index, (FT_Face_GetKerningFunc) 0, (FT_Face_AttachFunc) 0, (FT_Face_GetAdvancesFunc) 0, (FT_CharMap_CharNextFunc) CID_Get_Next_Char }; /* END */