kc3-lang/freetype/include/internal/ftgloadr.h

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• Hash : 0a33a398
  Author :
  Date : 2015-02-17T08:03:05
  

  [truetype] Various signedness fixes.
  
  * include/internal/ftgloadr.h, src/truetype/ttpload.c: Apply.
  
  * src/truetype/ttgload.c: Apply.
  (TT_Get_VMetrics): Protect against invalid ascenders and descenders
  while constructing advance height.
  

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• include/internal/ftgloadr.h

• /***************************************************************************/
  /*                                                                         */
  /*  ftgloadr.h                                                             */
  /*                                                                         */
  /*    The FreeType glyph loader (specification).                           */
  /*                                                                         */
  /*  Copyright 2002-2015 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 __FTGLOADR_H__
  #define __FTGLOADR_H__
  
  
  #include <ft2build.h>
  #include FT_FREETYPE_H
  
  
  FT_BEGIN_HEADER
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Struct>                                                              */
    /*    FT_GlyphLoader                                                     */
    /*                                                                       */
    /* <Description>                                                         */
    /*    The glyph loader is an internal object used to load several glyphs */
    /*    together (for example, in the case of composites).                 */
    /*                                                                       */
    /* <Note>                                                                */
    /*    The glyph loader implementation is not part of the high-level API, */
    /*    hence the forward structure declaration.                           */
    /*                                                                       */
    typedef struct FT_GlyphLoaderRec_*  FT_GlyphLoader ;
  
  
  #if 0  /* moved to freetype.h in version 2.2 */
  #define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS          1
  #define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES      2
  #define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID        4
  #define FT_SUBGLYPH_FLAG_SCALE                   8
  #define FT_SUBGLYPH_FLAG_XY_SCALE             0x40
  #define FT_SUBGLYPH_FLAG_2X2                  0x80
  #define FT_SUBGLYPH_FLAG_USE_MY_METRICS      0x200
  #endif
  
  
    typedef struct  FT_SubGlyphRec_
    {
      FT_Int     index;
      FT_UShort  flags;
      FT_Int     arg1;
      FT_Int     arg2;
      FT_Matrix  transform;
  
    } FT_SubGlyphRec;
  
  
    typedef struct  FT_GlyphLoadRec_
    {
      FT_Outline   outline;       /* outline                   */
      FT_Vector*   extra_points;  /* extra points table        */
      FT_Vector*   extra_points2; /* second extra points table */
      FT_UInt      num_subglyphs; /* number of subglyphs       */
      FT_SubGlyph  subglyphs;     /* subglyphs                 */
  
    } FT_GlyphLoadRec, *FT_GlyphLoad;
  
  
    typedef struct  FT_GlyphLoaderRec_
    {
      FT_Memory        memory;
      FT_UInt          max_points;
      FT_UInt          max_contours;
      FT_UInt          max_subglyphs;
      FT_Bool          use_extra;
  
      FT_GlyphLoadRec  base;
      FT_GlyphLoadRec  current;
  
      void*            other;            /* for possible future extension? */
  
    } FT_GlyphLoaderRec;
  
  
    /* create new empty glyph loader */
    FT_BASE( FT_Error )
    FT_GlyphLoader_New( FT_Memory        memory,
                        FT_GlyphLoader  *aloader );
  
    /* add an extra points table to a glyph loader */
    FT_BASE( FT_Error )
    FT_GlyphLoader_CreateExtra( FT_GlyphLoader  loader );
  
    /* destroy a glyph loader */
    FT_BASE( void )
    FT_GlyphLoader_Done( FT_GlyphLoader  loader );
  
    /* reset a glyph loader (frees everything int it) */
    FT_BASE( void )
    FT_GlyphLoader_Reset( FT_GlyphLoader  loader );
  
    /* rewind a glyph loader */
    FT_BASE( void )
    FT_GlyphLoader_Rewind( FT_GlyphLoader  loader );
  
    /* check that there is enough space to add `n_points' and `n_contours' */
    /* to the glyph loader                                                 */
    FT_BASE( FT_Error )
    FT_GlyphLoader_CheckPoints( FT_GlyphLoader  loader,
                                FT_UInt         n_points,
                                FT_UInt         n_contours );
  
  
  #define FT_GLYPHLOADER_CHECK_P( _loader, _count )       \
    ( (_count) == 0                                    || \
      ( (FT_UInt)(_loader)->base.outline.n_points    +    \
        (FT_UInt)(_loader)->current.outline.n_points +    \
        (FT_UInt)(_count) ) <= (_loader)->max_points   )
  
  #define FT_GLYPHLOADER_CHECK_C( _loader, _count )         \
    ( (_count) == 0                                      || \
      ( (FT_UInt)(_loader)->base.outline.n_contours    +    \
        (FT_UInt)(_loader)->current.outline.n_contours +    \
        (FT_UInt)(_count) ) <= (_loader)->max_contours   )
  
  #define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points, _contours ) \
    ( ( FT_GLYPHLOADER_CHECK_P( _loader, _points )   &&              \
        FT_GLYPHLOADER_CHECK_C( _loader, _contours ) )               \
      ? 0                                                            \
      : FT_GlyphLoader_CheckPoints( (_loader),                       \
                                    (FT_UInt)(_points),              \
                                    (FT_UInt)(_contours) ) )
  
  
    /* check that there is enough space to add `n_subs' sub-glyphs to */
    /* a glyph loader                                                 */
    FT_BASE( FT_Error )
    FT_GlyphLoader_CheckSubGlyphs( FT_GlyphLoader  loader,
                                   FT_UInt         n_subs );
  
    /* prepare a glyph loader, i.e. empty the current glyph */
    FT_BASE( void )
    FT_GlyphLoader_Prepare( FT_GlyphLoader  loader );
  
    /* add the current glyph to the base glyph */
    FT_BASE( void )
    FT_GlyphLoader_Add( FT_GlyphLoader  loader );
  
    /* copy points from one glyph loader to another */
    FT_BASE( FT_Error )
    FT_GlyphLoader_CopyPoints( FT_GlyphLoader  target,
                               FT_GlyphLoader  source );
  
   /* */
  
  
  FT_END_HEADER
  
  #endif /* __FTGLOADR_H__ */
  
  
  /* END */
  

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