kc3-lang/harfbuzz/src/otlbuffer.h

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• Hash : 78282cda
  Author :
  Date : 2004-07-26T18:59:02
  

  Make Check_Property() take a OTL_GlyphItem, add a gproperties field to
  
  Mon Jul 26 14:49:22 2004  Owen Taylor  <otaylor@redhat.com>
  
          * ftxgdef.[ch] otlbuffer.[ch]: Make Check_Property() take a
          OTL_GlyphItem, add a gproperties field to OTLGlyphItem,
          and use that to cache the properties for a glyph.
  
          * ftxgsub.c ftxgdef.c: Adapt to Check_Property() changes.
  
          * otlbuffer.[ch] ftxgsub.c: Add otl_buffer_copy_output_glyph()
          to use when we are copying an unmodified glyph from input
          to output that preserves the cached properties.
  

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• src/otlbuffer.h

• /* otlbuffer.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.
   */
  #include <ft2build.h>
  #include FT_FREETYPE_H
  
  #include <glib.h>
  
  G_BEGIN_DECLS
  
  #define OTL_GLYPH_PROPERTIES_UNKNOWN 0xFFFF
  
    typedef struct OTL_GlyphItemRec_ {
      FT_UInt     gindex;
      FT_UInt     properties;
      FT_UInt     cluster;
      FT_UShort   component;
      FT_UShort   ligID;
      FT_UShort   gproperties;
    } OTL_GlyphItemRec, *OTL_GlyphItem;
  
    typedef struct OTL_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                     */
    } OTL_PositionRec, *OTL_Position;
  
  
    typedef struct OTL_BufferRec_{ 
      FT_Memory   memory;
      FT_ULong    allocated;
  
      FT_ULong    in_length;
      FT_ULong    out_length;
      FT_ULong    in_pos;
      FT_ULong    out_pos;
      
      OTL_GlyphItem  in_string;
      OTL_GlyphItem  out_string;
      OTL_Position   positions;
      FT_UShort      max_ligID;
    } OTL_BufferRec, *OTL_Buffer;
  
    FT_Error
    otl_buffer_new( FT_Memory   memory,
  		  OTL_Buffer *buffer );
  
    FT_Error
    otl_buffer_swap( OTL_Buffer buffer );
  
    FT_Error
    otl_buffer_free( OTL_Buffer buffer );
  
    FT_Error
    otl_buffer_clear( OTL_Buffer buffer );
  
    FT_Error
    otl_buffer_add_glyph( OTL_Buffer buffer,
  			FT_UInt    glyph_index,
  			FT_UInt    properties,
  			FT_UInt    cluster );
  
    FT_Error
    otl_buffer_add_output_glyphs( OTL_Buffer buffer,
  				FT_UShort  num_in,
  				FT_UShort  num_out,
  				FT_UShort *glyph_data,
  				FT_UShort  component,
  				FT_UShort  ligID );
  
    FT_Error
    otl_buffer_add_output_glyph ( OTL_Buffer buffer,
  			        FT_UInt    glyph_index,
  			        FT_UShort  component,
  			        FT_UShort  ligID );
  
    FT_Error
    otl_buffer_copy_output_glyph ( OTL_Buffer buffer );
  
    FT_UShort
    otl_buffer_allocate_ligid( OTL_Buffer buffer );
  
  G_END_DECLS
  

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