+++ /dev/null
-/***************************************************************************/
-/* */
-/* psaux.h */
-/* */
-/* Auxiliary functions and data structures related to PostScript fonts */
-/* (specification). */
-/* */
-/* Copyright 1996-2001 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. */
-/* */
-/***************************************************************************/
-
-
-#ifndef __PSAUX_H__
-#define __PSAUX_H__
-
-
-#include <ft2build.h>
-#include FT_INTERNAL_OBJECTS_H
-#include FT_INTERNAL_TYPE1_TYPES_H
-
-
-FT_BEGIN_HEADER
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1_TABLE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- typedef struct PS_Table_ PS_Table;
-
-
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* PS_Table_Funcs */
- /* */
- /* <Description> */
- /* A set of function pointers to manage PS_Table objects. */
- /* */
- /* <Fields> */
- /* table_init :: Used to initialize a table. */
- /* */
- /* table_done :: Finalizes resp. destroy a given table. */
- /* */
- /* table_add :: Adds a new object to a table. */
- /* */
- /* table_release :: Releases table data, then finalizes it. */
- /* */
- typedef struct PS_Table_Funcs_
- {
- FT_Error
- (*init)( PS_Table* table,
- FT_Int count,
- FT_Memory memory );
-
- void
- (*done)( PS_Table* table );
-
- FT_Error
- (*add)( PS_Table* table,
- FT_Int index,
- void* object,
- FT_Int length );
-
- void
- (*release)( PS_Table* table );
-
- } PS_Table_Funcs;
-
-
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* PS_Table */
- /* */
- /* <Description> */
- /* A PS_Table is a simple object used to store an array of objects in */
- /* a single memory block. */
- /* */
- /* <Fields> */
- /* block :: The address in memory of the growheap's block. This */
- /* can change between two object adds, due to */
- /* reallocation. */
- /* */
- /* cursor :: The current top of the grow heap within its block. */
- /* */
- /* capacity :: The current size of the heap block. Increments by */
- /* 1kByte chunks. */
- /* */
- /* max_elems :: The maximum number of elements in table. */
- /* */
- /* num_elems :: The current number of elements in table. */
- /* */
- /* elements :: A table of element addresses within the block. */
- /* */
- /* lengths :: A table of element sizes within the block. */
- /* */
- /* memory :: The object used for memory operations */
- /* (alloc/realloc). */
- /* */
- /* funcs :: A table of method pointers for this object. */
- /* */
- struct PS_Table_
- {
- FT_Byte* block; /* current memory block */
- FT_Offset cursor; /* current cursor in memory block */
- FT_Offset capacity; /* current size of memory block */
- FT_Long init;
-
- FT_Int max_elems;
- FT_Int num_elems;
- FT_Byte** elements; /* addresses of table elements */
- FT_Int* lengths; /* lengths of table elements */
-
- FT_Memory memory;
- PS_Table_Funcs funcs;
-
- };
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1 FIELDS & TOKENS *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- typedef struct T1_Parser_ T1_Parser;
-
- /* simple enumeration type used to identify token types */
- typedef enum T1_Token_Type_
- {
- t1_token_none = 0,
- t1_token_any,
- t1_token_string,
- t1_token_array,
-
- /* do not remove */
- t1_token_max
-
- } T1_Token_Type;
-
-
- /* a simple structure used to identify tokens */
- typedef struct T1_Token_
- {
- FT_Byte* start; /* first character of token in input stream */
- FT_Byte* limit; /* first character after the token */
- T1_Token_Type type; /* type of token */
-
- } T1_Token;
-
-
- /* enumeration type used to identify object fields */
- typedef enum T1_Field_Type_
- {
- t1_field_none = 0,
- t1_field_bool,
- t1_field_integer,
- t1_field_fixed,
- t1_field_string,
- t1_field_integer_array,
- t1_field_fixed_array,
- t1_field_callback,
-
- /* do not remove */
- t1_field_max
-
- } T1_Field_Type;
-
- typedef enum T1_Field_Location_
- {
- t1_field_cid_info,
- t1_field_font_dict,
- t1_field_font_info,
- t1_field_private,
-
- /* do not remove */
- t1_field_location_max
-
- } T1_Field_Location;
-
-
- typedef void
- (*T1_Field_Parser)( FT_Face face,
- FT_Pointer parser );
-
-
- /* structure type used to model object fields */
- typedef struct T1_Field_
- {
- const char* ident; /* field identifier */
- T1_Field_Location location;
- T1_Field_Type type; /* type of field */
- T1_Field_Parser reader;
- FT_UInt offset; /* offset of field in object */
- FT_Byte size; /* size of field in bytes */
- FT_UInt array_max; /* maximal number of elements for */
- /* array */
- FT_UInt count_offset; /* offset of element count for */
- /* arrays */
- } T1_Field;
-
-
-#define T1_NEW_SIMPLE_FIELD( _ident, _type, _fname ) \
- { \
- _ident, T1CODE, _type, \
- 0, \
- FT_FIELD_OFFSET( _fname ), \
- FT_FIELD_SIZE( _fname ), \
- 0, 0 \
- },
-
-#define T1_NEW_CALLBACK_FIELD( _ident, _reader ) \
- { \
- _ident, T1CODE, t1_field_callback, \
- (T1_Field_Parser)_reader, \
- 0, 0, \
- 0, 0 \
- },
-
-#define T1_NEW_TABLE_FIELD( _ident, _type, _fname, _max ) \
- { \
- _ident, T1CODE, _type, \
- 0, \
- FT_FIELD_OFFSET( _fname ), \
- FT_FIELD_SIZE_DELTA( _fname ), \
- _max, \
- FT_FIELD_OFFSET( num_ ## _fname ) \
- },
-
-#define T1_NEW_TABLE_FIELD2( _ident, _type, _fname, _max ) \
- { \
- _ident, T1CODE, _type, \
- 0, \
- FT_FIELD_OFFSET( _fname ), \
- FT_FIELD_SIZE_DELTA( _fname ), \
- _max, 0 \
- },
-
-
-#define T1_FIELD_BOOL( _ident, _fname ) \
- T1_NEW_SIMPLE_FIELD( _ident, t1_field_bool, _fname )
-
-#define T1_FIELD_NUM( _ident, _fname ) \
- T1_NEW_SIMPLE_FIELD( _ident, t1_field_integer, _fname )
-
-#define T1_FIELD_FIXED( _ident, _fname ) \
- T1_NEW_SIMPLE_FIELD( _ident, t1_field_fixed, _fname )
-
-#define T1_FIELD_STRING( _ident, _fname ) \
- T1_NEW_SIMPLE_FIELD( _ident, t1_field_string, _fname )
-
-#define T1_FIELD_NUM_TABLE( _ident, _fname, _fmax ) \
- T1_NEW_TABLE_FIELD( _ident, t1_field_integer_array, \
- _fname, _fmax )
-
-#define T1_FIELD_FIXED_TABLE( _ident, _fname, _fmax ) \
- T1_NEW_TABLE_FIELD( _ident, t1_field_fixed_array, \
- _fname, _fmax )
-
-#define T1_FIELD_NUM_TABLE2( _ident, _fname, _fmax ) \
- T1_NEW_TABLE_FIELD2( _ident, t1_field_integer_array, \
- _fname, _fmax )
-
-#define T1_FIELD_FIXED_TABLE2( _ident, _fname, _fmax ) \
- T1_NEW_TABLE_FIELD2( _ident, t1_field_fixed_array, \
- _fname, _fmax )
-
-#define T1_FIELD_CALLBACK( _ident, _name ) \
- T1_NEW_CALLBACK_FIELD( _ident, _name )
-
-
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1 PARSER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- typedef struct T1_Parser_Funcs_
- {
- void
- (*init)( T1_Parser* parser,
- FT_Byte* base,
- FT_Byte* limit,
- FT_Memory memory );
-
- void
- (*done)( T1_Parser* parser );
-
- void
- (*skip_spaces)( T1_Parser* parser );
- void
- (*skip_alpha)( T1_Parser* parser );
-
- FT_Long
- (*to_int)( T1_Parser* parser );
- FT_Fixed
- (*to_fixed)( T1_Parser* parser,
- FT_Int power_ten );
- FT_Int
- (*to_coord_array)( T1_Parser* parser,
- FT_Int max_coords,
- FT_Short* coords );
- FT_Int
- (*to_fixed_array)( T1_Parser* parser,
- FT_Int max_values,
- FT_Fixed* values,
- FT_Int power_ten );
-
- void
- (*to_token)( T1_Parser* parser,
- T1_Token* token );
- void
- (*to_token_array)( T1_Parser* parser,
- T1_Token* tokens,
- FT_UInt max_tokens,
- FT_Int* pnum_tokens );
-
- FT_Error
- (*load_field)( T1_Parser* parser,
- const T1_Field* field,
- void** objects,
- FT_UInt max_objects,
- FT_ULong* pflags );
-
- FT_Error
- (*load_field_table)( T1_Parser* parser,
- const T1_Field* field,
- void** objects,
- FT_UInt max_objects,
- FT_ULong* pflags );
-
- } T1_Parser_Funcs;
-
-
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* T1_Parser */
- /* */
- /* <Description> */
- /* A T1_Parser is an object used to parse a Type 1 font very quickly. */
- /* */
- /* <Fields> */
- /* cursor :: The current position in the text. */
- /* */
- /* base :: Start of the processed text. */
- /* */
- /* limit :: End of the processed text. */
- /* */
- /* error :: The last error returned. */
- /* */
- /* memory :: The object used for memory operations (alloc/realloc). */
- /* */
- /* funcs :: A table of functions for the parser. */
- /* */
- struct T1_Parser_
- {
- FT_Byte* cursor;
- FT_Byte* base;
- FT_Byte* limit;
- FT_Error error;
- FT_Memory memory;
-
- T1_Parser_Funcs funcs;
- };
-
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1 BUILDER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- typedef struct T1_Builder_ T1_Builder;
-
-
- typedef FT_Error
- (*T1_Builder_Check_Points_Func)( T1_Builder* builder,
- FT_Int count );
-
- typedef void
- (*T1_Builder_Add_Point_Func)( T1_Builder* builder,
- FT_Pos x,
- FT_Pos y,
- FT_Byte flag );
-
- typedef FT_Error
- (*T1_Builder_Add_Point1_Func)( T1_Builder* builder,
- FT_Pos x,
- FT_Pos y );
-
- typedef FT_Error
- (*T1_Builder_Add_Contour_Func)( T1_Builder* builder );
-
- typedef FT_Error
- (*T1_Builder_Start_Point_Func)( T1_Builder* builder,
- FT_Pos x,
- FT_Pos y );
-
- typedef void
- (*T1_Builder_Close_Contour_Func)( T1_Builder* builder );
-
-
- typedef struct T1_Builder_Funcs_
- {
- void
- (*init)( T1_Builder* builder,
- FT_Face face,
- FT_Size size,
- FT_GlyphSlot slot );
-
- void
- (*done)( T1_Builder* builder );
-
- T1_Builder_Check_Points_Func check_points;
- T1_Builder_Add_Point_Func add_point;
- T1_Builder_Add_Point1_Func add_point1;
- T1_Builder_Add_Contour_Func add_contour;
- T1_Builder_Start_Point_Func start_point;
- T1_Builder_Close_Contour_Func close_contour;
-
- } T1_Builder_Funcs;
-
-
-
- /*************************************************************************/
- /* */
- /* <Structure> */
- /* T1_Builder */
- /* */
- /* <Description> */
- /* A structure used during glyph loading to store its outline. */
- /* */
- /* <Fields> */
- /* memory :: The current memory object. */
- /* */
- /* face :: The current face object. */
- /* */
- /* glyph :: The current glyph slot. */
- /* */
- /* loader :: XXX */
- /* */
- /* base :: The base glyph outline. */
- /* */
- /* current :: The current glyph outline. */
- /* */
- /* max_points :: maximum points in builder outline */
- /* */
- /* max_contours :: Maximal number of contours in builder outline. */
- /* */
- /* last :: The last point position. */
- /* */
- /* scale_x :: The horizontal scale (FUnits to sub-pixels). */
- /* */
- /* scale_y :: The vertical scale (FUnits to sub-pixels). */
- /* */
- /* pos_x :: The horizontal translation (if composite glyph). */
- /* */
- /* pos_y :: The vertical translation (if composite glyph). */
- /* */
- /* left_bearing :: The left side bearing point. */
- /* */
- /* advance :: The horizontal advance vector. */
- /* */
- /* bbox :: Unused. */
- /* */
- /* path_begun :: A flag which indicates that a new path has begun. */
- /* */
- /* load_points :: If this flag is not set, no points are loaded. */
- /* */
- /* no_recurse :: Set but not used. */
- /* */
- /* error :: An error code that is only used to report memory */
- /* allocation problems. */
- /* */
- /* metrics_only :: A boolean indicating that we only want to compute */
- /* the metrics of a given glyph, not load all of its */
- /* points. */
- /* */
- /* funcs :: An array of function pointers for the builder. */
- /* */
- struct T1_Builder_
- {
- FT_Memory memory;
- FT_Face face;
- FT_GlyphSlot glyph;
- FT_GlyphLoader* loader;
- FT_Outline* base;
- FT_Outline* current;
-
- FT_Vector last;
-
- FT_Fixed scale_x;
- FT_Fixed scale_y;
-
- FT_Pos pos_x;
- FT_Pos pos_y;
-
- FT_Vector left_bearing;
- FT_Vector advance;
-
- FT_BBox bbox; /* bounding box */
- FT_Bool path_begun;
- FT_Bool load_points;
- FT_Bool no_recurse;
- FT_Bool shift;
-
- FT_Error error; /* only used for memory errors */
- FT_Bool metrics_only;
-
- T1_Builder_Funcs funcs;
- };
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1 DECODER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-#if 0
-
- /*************************************************************************/
- /* */
- /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */
- /* calls during glyph loading. */
- /* */
-#define T1_MAX_SUBRS_CALLS 8
-
-
- /*************************************************************************/
- /* */
- /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */
- /* minimum of 16 is required. */
- /* */
-#define T1_MAX_CHARSTRINGS_OPERANDS 32
-
-#endif /* 0 */
-
-
- typedef struct T1_Decoder_Zone_
- {
- FT_Byte* cursor;
- FT_Byte* base;
- FT_Byte* limit;
-
- } T1_Decoder_Zone;
-
-
- typedef struct T1_Decoder_ T1_Decoder;
- typedef struct T1_Decoder_Funcs_ T1_Decoder_Funcs;
-
-
- typedef FT_Error
- (*T1_Decoder_Callback)( T1_Decoder* decoder,
- FT_UInt glyph_index );
-
-
- struct T1_Decoder_Funcs_
- {
- FT_Error
- (*init)( T1_Decoder* decoder,
- FT_Face face,
- FT_Size size,
- FT_GlyphSlot slot,
- FT_Byte** glyph_names,
- T1_Blend* blend,
- T1_Decoder_Callback callback );
-
- void
- (*done)( T1_Decoder* decoder );
-
- FT_Error
- (*parse_charstrings)( T1_Decoder* decoder,
- FT_Byte* base,
- FT_UInt len );
- };
-
-
- struct T1_Decoder_
- {
- T1_Builder builder;
-
- FT_Long stack[T1_MAX_CHARSTRINGS_OPERANDS];
- FT_Long* top;
-
- T1_Decoder_Zone zones[T1_MAX_SUBRS_CALLS + 1];
- T1_Decoder_Zone* zone;
-
- PSNames_Interface* psnames; /* for seac */
- FT_UInt num_glyphs;
- FT_Byte** glyph_names;
-
- FT_Int lenIV; /* internal for sub routine calls */
- FT_UInt num_subrs;
- FT_Byte** subrs;
- FT_Int* subrs_len; /* array of subrs length (optional) */
-
- FT_Matrix font_matrix;
- FT_Vector font_offset;
-
- FT_Int flex_state;
- FT_Int num_flex_vectors;
- FT_Vector flex_vectors[7];
-
- T1_Blend* blend; /* for multiple master support */
-
- T1_Decoder_Callback parse_callback;
- T1_Decoder_Funcs funcs;
- };
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** PSAux Module Interface *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- typedef struct PSAux_Interface_
- {
- const PS_Table_Funcs* ps_table_funcs;
- const T1_Parser_Funcs* t1_parser_funcs;
- const T1_Builder_Funcs* t1_builder_funcs;
- const T1_Decoder_Funcs* t1_decoder_funcs;
-
- void
- (*t1_decrypt)( FT_Byte* buffer,
- FT_Offset length,
- FT_UShort seed );
-
- } PSAux_Interface;
-
-
-FT_END_HEADER
-
-#endif /* __PSAUX_H__ */
-
-
-/* END */
projects / rrdtool.git / blobdiff