kc3-lang/freetype/src/type1z/z1gload.h

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• Hash : 7fa51b55
  Author :
  Date : 2000-07-08T19:51:42
  

  Formatting. Adding some trivial error checking. Adding/Fixing tracing levels.

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• src/type1z/z1gload.h

• /***************************************************************************/
  /*                                                                         */
  /*  z1gload.h                                                              */
  /*                                                                         */
  /*    Experimental 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 Z1GLOAD_H
  #define Z1GLOAD_H
  
  
  #ifdef FT_FLAT_COMPILE
  
  #include "z1objs.h"
  
  #else
  
  #include <type1z/z1objs.h>
  
  #endif
  
  
  #ifdef __cplusplus
    extern "C" {
  #endif
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Structure>                                                           */
    /*    Z1_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.                            */
    /*                                                                       */
    /*    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.                                        */
    /*                                                                       */
    /*    error        :: The current error code.                            */
    /*                                                                       */
    /*    metrics_only :: A flag whether to compute metrics only.            */
    /*                                                                       */
    typedef struct  Z1_Builder_
    {
      FT_Memory        memory;
      T1_Face          face;
      Z1_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_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;
  
    } Z1_Builder;
  
  
    /* execution context charstring zone */
    typedef struct  Z1_Decoder_Zone_
    {
      FT_Byte*  base;
      FT_Byte*  limit;
      FT_Byte*  cursor;
  
    } Z1_Decoder_Zone;
  
  
    typedef struct  Z1_Decoder_
    {
      Z1_Builder        builder;
  
      FT_Int            stack[T1_MAX_CHARSTRINGS_OPERANDS];
      FT_Int*           top;
  
      Z1_Decoder_Zone   zones[T1_MAX_SUBRS_CALLS + 1];
      Z1_Decoder_Zone*  zone;
  
      FT_Int            flex_state;
      FT_Int            num_flex_vectors;
      FT_Vector         flex_vectors[7];
  
      T1_Blend*         blend;  /* for multiple masters */
  
    } Z1_Decoder;
  
  
    LOCAL_DEF
    void  Z1_Init_Builder( Z1_Builder*   builder,
                           T1_Face       face,
                           Z1_Size       size,
                           Z1_GlyphSlot  glyph );
  
    LOCAL_DEF
    void  Z1_Done_Builder( Z1_Builder*  builder );
  
    LOCAL_DEF
    void  Z1_Init_Decoder( Z1_Decoder*  decoder );
  
    LOCAL_DEF
    FT_Error  Z1_Compute_Max_Advance( T1_Face  face,
                                      FT_Int*  max_advance );
  
    LOCAL_DEF
    FT_Error   Z1_Parse_CharStrings( Z1_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  Z1_Load_Glyph( Z1_GlyphSlot  glyph,
                             Z1_Size       size,
                             FT_Int        glyph_index,
                             FT_Int        load_flags );
  
  
  #ifdef __cplusplus
    }
  #endif
  
  
  #endif /* Z1GLOAD_H */
  
  
  /* END */
  

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