ref: e3c11d7f004b906bebf610cc8bdb5320494fd157
dir: /src/cff/t2gload.h/
/***************************************************************************/
/* */
/* t2gload.h */
/* */
/* OpenType Glyph Loader (specification). */
/* */
/* Copyright 1996-2000 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 T2GLOAD_H
#define T2GLOAD_H
#include <freetype/freetype.h>
#include <t2objs.h>
#ifdef __cplusplus
extern "C" {
#endif
#define T2_MAX_OPERANDS 48
#define T2_MAX_SUBRS_CALLS 32
/*************************************************************************/
/* */
/* <Structure> */
/* T2_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. */
/* */
/* current :: The current glyph outline. */
/* */
/* base :: The base 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. */
/* */
typedef struct T2_Builder_
{
FT_Memory memory;
TT_Face face;
T2_GlyphSlot glyph;
FT_Outline current; /* the current glyph outline */
FT_Outline base; /* the composite glyph outline */
TT_Int max_points; /* capacity of base outline in points */
TT_Int max_contours; /* capacity of base outline in contours */
TT_Vector last;
TT_Fixed scale_x;
TT_Fixed scale_y;
TT_Pos pos_x;
TT_Pos pos_y;
TT_Vector left_bearing;
TT_Vector advance;
TT_BBox bbox; /* bounding box */
TT_Bool path_begun;
TT_Bool load_points;
TT_Bool no_recurse;
TT_Error error; /* only used for memory errors */
TT_Bool metrics_only;
} T2_Builder;
/* execution context charstring zone */
typedef struct T2_Decoder_Zone_
{
TT_Byte* base;
TT_Byte* limit;
TT_Byte* cursor;
} T2_Decoder_Zone;
typedef struct T2_Decoder_
{
T2_Builder builder;
CFF_Font* cff;
TT_Fixed stack[T2_MAX_OPERANDS + 1];
TT_Fixed* top;
T2_Decoder_Zone zones[T2_MAX_SUBRS_CALLS + 1];
T2_Decoder_Zone* zone;
TT_Int flex_state;
TT_Int num_flex_vectors;
TT_Vector flex_vectors[7];
TT_Pos glyph_width;
TT_Pos nominal_width;
TT_Bool read_width;
TT_Int num_hints;
TT_Fixed* buildchar;
TT_Int len_buildchar;
TT_UInt num_locals;
TT_UInt num_globals;
TT_Int locals_bias;
TT_Int globals_bias;
TT_Byte** locals;
TT_Byte** globals;
} T2_Decoder;
LOCAL_DEF
void T2_Init_Decoder( T2_Decoder* decoder,
TT_Face face,
T2_Size size,
T2_GlyphSlot slot );
#if 0 /* unused until we support pure CFF fonts */
/* Compute the maximum advance width of a font through quick parsing */
LOCAL_DEF
TT_Error T2_Compute_Max_Advance( TT_Face face,
TT_Int* max_advance );
#endif
/* This function is exported, because it is used by the T1Dump utility */
LOCAL_DEF
TT_Error T2_Parse_CharStrings( T2_Decoder* decoder,
TT_Byte* charstring_base,
TT_Int charstring_len );
LOCAL_DEF
TT_Error T2_Load_Glyph( T2_GlyphSlot glyph,
T2_Size size,
TT_Int glyph_index,
TT_Int load_flags );
#ifdef __cplusplus
}
#endif
#endif /* T2GLOAD_H */
/* END */