ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /libfreetype/t42drivr.c/
/***************************************************************************/ /* */ /* t42drivr.c */ /* */ /* High-level Type 42 driver interface (body). */ /* */ /* Copyright 2002 by Roberto Alameda. */ /* */ /* 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. */ /* */ /***************************************************************************/ /*************************************************************************/ /* */ /* This driver implements Type42 fonts as described in the */ /* Technical Note #5012 from Adobe, with these limitations: */ /* */ /* 1) CID Fonts are not currently supported. */ /* 2) Incremental fonts making use of the GlyphDirectory keyword */ /* will be loaded, but the rendering will be using the TrueType */ /* tables. */ /* 3) The sfnts array is expected to be ASCII, not binary. */ /* 4) As for Type1 fonts, CDevProc is not supported. */ /* 5) The Metrics dictionary is not supported. */ /* 6) AFM metrics are not supported. */ /* */ /* In other words, this driver supports Type42 fonts derived from */ /* TrueType fonts in a non-CID manner, as done by usual conversion */ /* programs. */ /* */ /*************************************************************************/ #include "t42drivr.h" #include "t42objs.h" #include "t42error.h" #include FT_INTERNAL_DEBUG_H #undef FT_COMPONENT #define FT_COMPONENT trace_t42 static FT_Error t42_get_glyph_name( T42_Face face, FT_UInt glyph_index, FT_Pointer buffer, FT_UInt buffer_max ) { FT_String* gname; gname = face->type1.glyph_names[glyph_index]; if ( buffer_max > 0 ) { FT_UInt len = (FT_UInt)( ft_strlen( gname ) ); if ( len >= buffer_max ) len = buffer_max - 1; FT_MEM_COPY( buffer, gname, len ); ((FT_Byte*)buffer)[len] = 0; } return T42_Err_Ok; } static const char* t42_get_ps_name( T42_Face face ) { return (const char*)face->type1.font_name; } static FT_UInt t42_get_name_index( T42_Face face, FT_String* glyph_name ) { FT_Int i; FT_String* gname; for ( i = 0; i < face->type1.num_glyphs; i++ ) { gname = face->type1.glyph_names[i]; if ( !ft_strcmp( glyph_name, gname ) ) return ft_atoi( (const char *)face->type1.charstrings[i] ); } return 0; } static FT_Module_Interface T42_Get_Interface( FT_Driver driver, const FT_String* t42_interface ) { FT_UNUSED( driver ); /* Any additional interface are defined here */ if (ft_strcmp( (const char*)t42_interface, "glyph_name" ) == 0 ) return (FT_Module_Interface)t42_get_glyph_name; if ( ft_strcmp( (const char*)t42_interface, "name_index" ) == 0 ) return (FT_Module_Interface)t42_get_name_index; if ( ft_strcmp( (const char*)t42_interface, "postscript_name" ) == 0 ) return (FT_Module_Interface)t42_get_ps_name; return 0; } const FT_Driver_ClassRec t42_driver_class = { { ft_module_font_driver | ft_module_driver_scalable | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER ft_module_driver_has_hinter, #else 0, #endif sizeof ( T42_DriverRec ), "type42", 0x10000L, 0x20000L, 0, /* format interface */ (FT_Module_Constructor)T42_Driver_Init, (FT_Module_Destructor) T42_Driver_Done, (FT_Module_Requester) T42_Get_Interface, }, sizeof ( T42_FaceRec ), sizeof ( T42_SizeRec ), sizeof ( T42_GlyphSlotRec ), (FT_Face_InitFunc) T42_Face_Init, (FT_Face_DoneFunc) T42_Face_Done, (FT_Size_InitFunc) T42_Size_Init, (FT_Size_DoneFunc) T42_Size_Done, (FT_Slot_InitFunc) T42_GlyphSlot_Init, (FT_Slot_DoneFunc) T42_GlyphSlot_Done, (FT_Size_ResetPointsFunc) T42_Size_SetChars, (FT_Size_ResetPixelsFunc) T42_Size_SetPixels, (FT_Slot_LoadFunc) T42_GlyphSlot_Load, (FT_Face_GetKerningFunc) 0, (FT_Face_AttachFunc) 0, (FT_Face_GetAdvancesFunc) 0 }; /* END */