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kc3-lang/freetype/src/cff/cffgload.h
Werner Lemberg
- src/cff/cffgload.h
-
/***************************************************************************/ /* */ /* cffgload.h */ /* */ /* OpenType Glyph Loader (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 __CFFGLOAD_H__ #define __CFFGLOAD_H__ #include <ft2build.h> #include FT_FREETYPE_H #include "cffobjs.h" FT_BEGIN_HEADER #define CFF_MAX_OPERANDS 48 #define CFF_MAX_SUBRS_CALLS 32 /*************************************************************************/ /* */ /* <Structure> */ /* CFF_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 CFF_Builder_ { FT_Memory memory; TT_Face face; CFF_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_Error error; /* only used for memory errors */ FT_Bool metrics_only; } CFF_Builder; /* execution context charstring zone */ typedef struct CFF_Decoder_Zone_ { FT_Byte* base; FT_Byte* limit; FT_Byte* cursor; } CFF_Decoder_Zone; typedef struct CFF_Decoder_ { CFF_Builder builder; CFF_Font* cff; FT_Fixed stack[CFF_MAX_OPERANDS + 1]; FT_Fixed* top; CFF_Decoder_Zone zones[CFF_MAX_SUBRS_CALLS + 1]; CFF_Decoder_Zone* zone; FT_Int flex_state; FT_Int num_flex_vectors; FT_Vector flex_vectors[7]; FT_Pos glyph_width; FT_Pos nominal_width; FT_Bool read_width; FT_Int num_hints; FT_Fixed* buildchar; FT_Int len_buildchar; FT_UInt num_locals; FT_UInt num_globals; FT_Int locals_bias; FT_Int globals_bias; FT_Byte** locals; FT_Byte** globals; FT_Byte** glyph_names; /* for pure CFF fonts only */ FT_UInt num_glyphs; /* number of glyphs in font */ } CFF_Decoder; FT_LOCAL void CFF_Init_Decoder( CFF_Decoder* decoder, TT_Face face, CFF_Size size, CFF_GlyphSlot slot ); FT_LOCAL void CFF_Prepare_Decoder( CFF_Decoder* decoder, FT_UInt glyph_index ); #if 0 /* unused until we support pure CFF fonts */ /* Compute the maximum advance width of a font through quick parsing */ FT_LOCAL FT_Error CFF_Compute_Max_Advance( TT_Face face, FT_Int* max_advance ); #endif /* 0 */ FT_LOCAL FT_Error CFF_Parse_CharStrings( CFF_Decoder* decoder, FT_Byte* charstring_base, FT_Int charstring_len ); FT_LOCAL FT_Error CFF_Load_Glyph( CFF_GlyphSlot glyph, CFF_Size size, FT_Int glyph_index, FT_Int load_flags ); FT_END_HEADER #endif /* __CFFGLOAD_H__ */ /* END */