| /***************************************************************************/ |
| /* */ |
| /* t42drivr.c */ |
| /* */ |
| /* High-level Type 42 driver interface (body). */ |
| /* */ |
| /* Copyright 2002, 2003 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) As for Type1 fonts, CDevProc is not supported. */ |
| /* 4) The Metrics dictionary is not supported. */ |
| /* 5) 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 |
| |
| #include FT_SERVICE_XFREE86_NAME_H |
| #include FT_SERVICE_GLYPH_DICT_H |
| #include FT_SERVICE_POSTSCRIPT_NAME_H |
| #include FT_SERVICE_POSTSCRIPT_INFO_H |
| |
| #undef FT_COMPONENT |
| #define FT_COMPONENT trace_t42 |
| |
| |
| /* |
| * |
| * GLYPH DICT SERVICE |
| * |
| */ |
| |
| 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 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_Service_GlyphDictRec t42_service_glyph_dict = |
| { |
| (FT_GlyphDict_GetNameFunc) t42_get_glyph_name, |
| (FT_GlyphDict_NameIndexFunc)t42_get_name_index |
| }; |
| |
| |
| /* |
| * |
| * POSTSCRIPT NAME SERVICE |
| * |
| */ |
| |
| static const char* |
| t42_get_ps_font_name( T42_Face face ) |
| { |
| return (const char*)face->type1.font_name; |
| } |
| |
| |
| static FT_Service_PsFontNameRec t42_service_ps_font_name = |
| { |
| (FT_PsName_GetFunc)t42_get_ps_font_name |
| }; |
| |
| |
| /* |
| * POSTSCRIPT INFO SERVICE |
| * |
| */ |
| |
| static FT_Error |
| t42_ps_get_font_info( FT_Face face, |
| PS_FontInfoRec* afont_info ) |
| { |
| *afont_info = ((T42_Face)face)->type1.font_info; |
| return 0; |
| } |
| |
| static FT_Int |
| t42_ps_has_glyph_names( FT_Face face ) |
| { |
| FT_UNUSED( face ); |
| return 1; |
| } |
| |
| static const FT_Service_PsInfoRec t42_service_ps_info = |
| { |
| (PS_GetFontInfoFunc) t42_ps_get_font_info, |
| (PS_HasGlyphNamesFunc) t42_ps_has_glyph_names |
| }; |
| |
| |
| /* |
| * |
| * SERVICE LIST |
| * |
| */ |
| |
| static const FT_ServiceDescRec t42_services[] = |
| { |
| { FT_SERVICE_ID_GLYPH_DICT, &t42_service_glyph_dict }, |
| { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t42_service_ps_font_name }, |
| { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TYPE_42 }, |
| { NULL, NULL } |
| }; |
| |
| |
| static FT_Module_Interface |
| T42_Get_Interface( FT_Driver driver, |
| const FT_String* t42_interface ) |
| { |
| FT_UNUSED( driver ); |
| |
| return ft_service_list_lookup( t42_services, t42_interface ); |
| } |
| |
| |
| 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 */ |