kc3-lang/freetype/src/type1/t1gload.h

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• Hash : a90663f5
  Author :
  Date : 2000-07-08T00:41:13
  

  vast clean-up of the sources in order to allow flat directory compilation (by defining the FT_FLAT_COMPILE macro at compile time..) moved "freetype2/BUILD" to "freetype2/docs/BUILD"

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• src/type1/t1gload.h

• /***************************************************************************/
  /*                                                                         */
  /*  t1gload.h                                                              */
  /*                                                                         */
  /*    Type 1 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 T1GLOAD_H
  #define T1GLOAD_H
  
  #ifdef FT_FLAT_COMPILE
  #include "t1objs.h"
  #else
  #include <type1/t1objs.h>
  #endif
  
  
  #ifdef __cplusplus
    extern "C" {
  #endif
  
  
    typedef struct T1_Builder_  T1_Builder;
  
    typedef FT_Error  (*T1_Builder_EndChar)( T1_Builder*  loader );
  
    typedef FT_Error  (*T1_Builder_Sbw)( T1_Builder*  loader,
                                         FT_Pos       sbx,
                                         FT_Pos       sby,
                                         FT_Pos       wx,
                                         FT_Pos       wy );
  
    typedef FT_Error  (*T1_Builder_ClosePath)( T1_Builder*  loader );
  
    typedef FT_Error  (*T1_Builder_RLineTo)( T1_Builder*  loader,
                                             FT_Pos       dx,
                                             FT_Pos       dy );
  
    typedef FT_Error  (*T1_Builder_RMoveTo)( T1_Builder*  loader,
                                             FT_Pos       dx,
                                             FT_Pos       dy );
  
    typedef FT_Error  (*T1_Builder_RCurveTo)( T1_Builder*  loader,
                                              FT_Pos       dx1,
                                              FT_Pos       dy1,
                                              FT_Pos       dx2,
                                              FT_Pos       dy2,
                                              FT_Pos       dx3,
                                              FT_Pos       dy3 );
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Structure>                                                           */
    /*    T1_Builder_Funcs                                                   */
    /*                                                                       */
    /* <Description>                                                         */
    /*    A structure to store the address of various functions used by a    */
    /*    glyph builder to implement the outline's `path construction'.      */
    /*                                                                       */
    typedef struct  T1_Builder_Funcs_
    {
      T1_Builder_EndChar    end_char;
      T1_Builder_Sbw        set_bearing_point;
      T1_Builder_ClosePath  close_path;
      T1_Builder_RLineTo    rline_to;
      T1_Builder_RMoveTo    rmove_to;
      T1_Builder_RCurveTo   rcurve_to;
  
    } 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.                           */
    /*                                                                       */
    /*    size         :: The current size object.                           */
    /*                                                                       */
    /*    glyph        :: The current glyph slot.                            */
    /*                                                                       */
    /*    loader       :: The current glyph loader.                          */
    /*                                                                       */
    /*    current      :: The current glyph outline.                         */
    /*                                                                       */
    /*    base         :: The base glyph 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 (for composite glyphs). */
    /*                                                                       */
    /*    pos_y        :: The vertical translation (for composite glyphs).   */
    /*                                                                       */
    /*    left_bearing :: The left side bearing point.                       */
    /*                                                                       */
    /*    advance      :: The horizontal advance vector.                     */
    /*                                                                       */
    /*    no_recurse   ::                                                    */
    /*                                                                       */
    /*    bbox         :: The glyph's bounding box.                          */
    /*                                                                       */
    /*    path_begun   :: A flag which indicates that a new path has begun.  */
    /*                                                                       */
    /*    load_points  :: A flag which indicates, if not set, that no points */
    /*                    are loaded.                                        */
    /*                                                                       */
    /*    pass         :: The pass number for multi-pass hinters.            */
    /*                                                                       */
    /*    hint_point   :: The index of the next point to hint.               */
    /*                                                                       */
    /*    funcs        :: A table of builder functions used to perform the   */
    /*                    outline's path construction.                       */
    /*                                                                       */
    struct  T1_Builder_
    {
      FT_Memory        memory;
      T1_Face          face;
      T1_Size          size;
      T1_GlyphSlot     glyph;
      FT_GlyphLoader*  loader;
  
      FT_Outline*      current;       /* the current glyph outline   */
      FT_Outline*      base;          /* the composite glyph outline */
  
      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_Bool          no_recurse;
  
      FT_BBox          bbox;          /* bounding box */
      FT_Bool          path_begun;
      FT_Bool          load_points;
  
      FT_Int           pass;
      FT_Int           hint_point;
  
      /* path construction function interface */
      T1_Builder_Funcs  funcs;
    };
  
  
    typedef FT_Error  (*T1_Hinter_ChangeHints)( T1_Builder*  builder );
  
    typedef FT_Error  (*T1_Hinter_DotSection)( T1_Builder*  builder );
  
    typedef FT_Error  (*T1_Hinter_Stem)( T1_Builder*  builder,
                                         FT_Pos       pos,
                                         FT_Pos       width,
                                         FT_Bool      vertical );
  
    typedef FT_Error  (*T1_Hinter_Stem3)( T1_Builder*  builder,
                                          FT_Pos       pos0,
                                          FT_Pos       width0,
                                          FT_Pos       pos1,
                                          FT_Pos       width1,
                                          FT_Pos       pos2,
                                          FT_Pos       width2,
                                          FT_Bool      vertical );
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Structure>                                                           */
    /*    T1_Hinter_Funcs                                                    */
    /*                                                                       */
    /* <Description>                                                         */
    /*    A structure to store the address of various functions used by a    */
    /*    Type 1 hinter to perform outline hinting.                          */
    /*                                                                       */
    typedef struct  T1_Hinter_Func_
    {
      T1_Hinter_ChangeHints  change_hints;
      T1_Hinter_DotSection   dot_section;
      T1_Hinter_Stem         stem;
      T1_Hinter_Stem3        stem3;
  
    } T1_Hinter_Funcs;
  
  
    typedef enum  T1_Operator_
    {
      op_none = 0,
      op_endchar,
      op_hsbw,
      op_seac,
      op_sbw,
      op_closepath,
      op_hlineto,
      op_hmoveto,
      op_hvcurveto,
      op_rlineto,
      op_rmoveto,
      op_rrcurveto,
      op_vhcurveto,
      op_vlineto,
      op_vmoveto,
      op_dotsection,
      op_hstem,
      op_hstem3,
      op_vstem,
      op_vstem3,
      op_div,
      op_callothersubr,
      op_callsubr,
      op_pop,
      op_return,
      op_setcurrentpoint,
  
      op_max    /* never remove this one */
  
    } T1_Operator;
  
  
    /* execution context charstring zone */
    typedef struct  T1_Decoder_Zone_
    {
      FT_Byte*  base;
      FT_Byte*  limit;
      FT_Byte*  cursor;
  
    } T1_Decoder_Zone;
  
  
    typedef struct  T1_Decoder_
    {
      T1_Builder        builder;
      T1_Hinter_Funcs   hinter;
  
      FT_Int            stack[T1_MAX_CHARSTRINGS_OPERANDS];
      FT_Int*           top;
  
      T1_Decoder_Zone   zones[T1_MAX_SUBRS_CALLS + 1];
      T1_Decoder_Zone*  zone;
  
      FT_Int            flex_state;
      FT_Int            num_flex_vectors;
      FT_Vector         flex_vectors[7];
  
    } T1_Decoder;
  
  
    LOCAL_DEF
    void  T1_Init_Builder( T1_Builder*              builder,
                           T1_Face                  face,
                           T1_Size                  size,
                           T1_GlyphSlot             glyph,
                           const T1_Builder_Funcs*  funcs );
  
    LOCAL_DEF
    void T1_Done_Builder( T1_Builder*  builder );
  
    LOCAL_DEF
    void  T1_Init_Decoder( T1_Decoder*             decoder,
                           const T1_Hinter_Funcs*  funcs );
  
    LOCAL_DEF
    FT_Error  T1_Compute_Max_Advance( T1_Face  face,
                                      FT_Int*  max_advance );
  
    LOCAL_DEF
    FT_Error  T1_Parse_CharStrings( T1_Decoder*  decoder,
                                    FT_Byte*     charstring_base,
                                    FT_Int       charstring_len,
                                    FT_Int       num_subrs,
                                    FT_Byte**    subrs_base,
                                    FT_Int*      subrs_len );
  
    LOCAL_DEF
    FT_Error  T1_Add_Points( T1_Builder*  builder,
                             FT_Int       num_points );
  
    LOCAL_DEF
    FT_Error  T1_Add_Contours( T1_Builder*  builder,
                               FT_Int       num_contours );
  
    LOCAL_DEF
    FT_Error  T1_Load_Glyph( T1_GlyphSlot  glyph,
                             T1_Size       size,
                             FT_Int        glyph_index,
                             FT_Int        load_flags );
  
  
  #ifdef __cplusplus
    }
  #endif
  
  
  #endif /* T1GLOAD_H */
  
  
  /* END */
  

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