Edit
kc3-lang/freetype/src/cid/cidriver.c
Werner Lemberg
- src/cid/cidriver.c
-
/***************************************************************************/ /* */ /* cidriver.c */ /* */ /* CID driver interface (body). */ /* */ /* Copyright 1996-2000 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. */ /* */ /***************************************************************************/ #ifdef FT_FLAT_COMPILE #include "cidriver.h" #include "cidgload.h" #else #include <cid/cidriver.h> #include <cid/cidgload.h> #endif #include <freetype/internal/ftdebug.h> #include <freetype/internal/ftstream.h> #include <freetype/internal/psnames.h> #include <string.h> /* for strcmp() */ /*************************************************************************/ /* */ /* 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 FT_Module_Interface CID_Get_Interface( FT_Driver driver, const FT_String* interface ) { FT_UNUSED( driver ); FT_UNUSED( interface ); 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 T1_Err_Ok; } #endif /* 0 */ /*************************************************************************/ /* */ /* <Function> */ /* Cid_Get_Char_Index */ /* */ /* <Description> */ /* Uses a charmap to return a given character code's glyph index. */ /* */ /* <Input> */ /* charmap :: A handle to the source charmap object. */ /* */ /* charcode :: The character code. */ /* */ /* <Return> */ /* 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_Interface* psnames; face = (T1_Face)charmap->face; psnames = (PSNames_Interface*)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] && strcmp( gname, glyph_name ) == 0 ) { result = n; break; } } } } Exit: return result; } const FT_Driver_Class t1cid_driver_class = { /* first of all, the FT_Module_Class fields */ { ft_module_font_driver | ft_module_driver_scalable, sizeof( FT_DriverRec ), "t1cid", /* module name */ 0x10000L, /* version 1.0 of driver */ 0x20000L, /* requires FreeType 2.0 */ 0, (FT_Module_Constructor)CID_Init_Driver, (FT_Module_Destructor) CID_Done_Driver, (FT_Module_Requester) CID_Get_Interface }, /* then the other font drivers fields */ sizeof( CID_FaceRec ), sizeof( CID_SizeRec ), sizeof( CID_GlyphSlotRec ), (FTDriver_initFace) CID_Init_Face, (FTDriver_doneFace) CID_Done_Face, (FTDriver_initSize) 0, (FTDriver_doneSize) 0, (FTDriver_initGlyphSlot)0, (FTDriver_doneGlyphSlot)0, (FTDriver_setCharSizes) 0, (FTDriver_setPixelSizes)0, (FTDriver_loadGlyph) CID_Load_Glyph, (FTDriver_getCharIndex) CID_Get_Char_Index, (FTDriver_getKerning) 0, (FTDriver_attachFile) 0, (FTDriver_getAdvances) 0 }; #ifdef FT_CONFIG_OPTION_DYNAMIC_DRIVERS /*************************************************************************/ /* */ /* <Function> */ /* getDriverClass */ /* */ /* <Description> */ /* This function is used when compiling the TrueType driver as a */ /* shared library (`.DLL' or `.so'). It will be used by the */ /* high-level library of FreeType to retrieve the address of the */ /* driver's generic interface. */ /* */ /* It shouldn't be implemented in a static build, as each driver must */ /* have the same function as an exported entry point. */ /* */ /* <Return> */ /* The address of the TrueType's driver generic interface. The */ /* format-specific interface can then be retrieved through the method */ /* interface->get_format_interface. */ /* */ EXPORT_FUNC( FT_Driver_Class* ) getDriverClass( void ) { return &t1cid_driver_class; } #endif /* CONFIG_OPTION_DYNAMIC_DRIVERS */ /* END */