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- /***************************************************************************/
- /* */
- /* 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 */
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