/* harfbuzz-buffer.h: Buffer of glyphs for substitution/positioning * * Copyrigh 2004 Red Hat Software * * Portions 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 HARFBUZZ_BUFFER_H#define HARFBUZZ_BUFFER_H#include <ft2build.h>#include FT_FREETYPE_HFT_BEGIN_HEADER#define HB_GLYPH_PROPERTIES_UNKNOWN 0xFFFFtypedef struct HB_GlyphItemRec_ {  FT_UInt     gindex;  FT_UInt     properties;  FT_UInt     cluster;  FT_UShort   component;  FT_UShort   ligID;  FT_UShort   gproperties;} HB_GlyphItemRec, *HB_GlyphItem;typedef struct HB_PositionRec_ {  FT_Pos     x_pos;  FT_Pos     y_pos;  FT_Pos     x_advance;  FT_Pos     y_advance;  FT_UShort  back;            /* number of glyphs to go back				 for drawing current glyph   */  FT_Bool    new_advance;     /* if set, the advance width values are				 absolute, i.e., they won't be				 added to the original glyph's value				 but rather replace them.            */  FT_Short  cursive_chain;   /* character to which this connects,				 may be positive or negative; used				 only internally                     */} HB_PositionRec, *HB_Position;typedef struct HB_BufferRec_{   FT_Memory   memory;  FT_ULong    allocated;  FT_ULong    in_length;  FT_ULong    out_length;  FT_ULong    in_pos;  FT_ULong    out_pos;    HB_GlyphItem  in_string;  HB_GlyphItem  out_string;  HB_Position   positions;  FT_UShort      max_ligID;} HB_BufferRec, *HB_Buffer;FT_Errorhb_buffer_new( FT_Memory   memory,		HB_Buffer *buffer );FT_Errorhb_buffer_swap( HB_Buffer buffer );FT_Errorhb_buffer_free( HB_Buffer buffer );FT_Errorhb_buffer_clear( HB_Buffer buffer );FT_Errorhb_buffer_add_glyph( HB_Buffer buffer,		      FT_UInt    glyph_index,		      FT_UInt    properties,		      FT_UInt    cluster );FT_Errorhb_buffer_add_output_glyphs( HB_Buffer buffer,			      FT_UShort  num_in,			      FT_UShort  num_out,			      FT_UShort *glyph_data,			      FT_UShort  component,			      FT_UShort  ligID );FT_Errorhb_buffer_add_output_glyph ( HB_Buffer buffer,			      FT_UInt    glyph_index,			      FT_UShort  component,			      FT_UShort  ligID );FT_Errorhb_buffer_copy_output_glyph ( HB_Buffer buffer );FT_UShorthb_buffer_allocate_ligid( HB_Buffer buffer );FT_END_HEADER#endif /* HARFBUZZ_BUFFER_H */