diff options
Diffstat (limited to 'libfreetype/t42drivr.c')
| -rw-r--r-- | libfreetype/t42drivr.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/libfreetype/t42drivr.c b/libfreetype/t42drivr.c new file mode 100644 index 00000000..65bf2e8a --- /dev/null +++ b/libfreetype/t42drivr.c @@ -0,0 +1,169 @@ +/***************************************************************************/ +/* */ +/* 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 */ |