kc3-lang/freetype/src/pshinter/pshglob.h

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• Hash : 971517ac
  Author :
  Date : 2002-07-08T23:13:25
  

  * src/pshinter/pshglob.h, src/pshinter/pshglob.c: adding support for blue fuzz

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• src/pshinter/pshglob.h

• /***************************************************************************/
  /*                                                                         */
  /*  pshglob.h                                                              */
  /*                                                                         */
  /*    PostScript hinter global hinting management.                         */
  /*                                                                         */
  /*  Copyright 2001, 2002 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 __PSHGLOB_H__
  #define __PSHGLOB_H__
  
  
  #include FT_FREETYPE_H
  #include FT_INTERNAL_POSTSCRIPT_HINTS_H
  
  
  FT_BEGIN_HEADER
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****                    GLOBAL HINTS INTERNALS                     *****/
    /*****                                                               *****/
    /*************************************************************************/
    /*************************************************************************/
  
  
    /*************************************************************************/
    /*                                                                       */
    /* @constant:                                                            */
    /*    PS_GLOBALS_MAX_BLUE_ZONES                                          */
    /*                                                                       */
    /* @description:                                                         */
    /*    The maximum number of blue zones in a font global hints structure. */
    /*    See @PS_Globals_BluesRec.                                          */
    /*                                                                       */
  #define PS_GLOBALS_MAX_BLUE_ZONES  16
  
  
    /*************************************************************************/
    /*                                                                       */
    /* @constant:                                                            */
    /*    PS_GLOBALS_MAX_STD_WIDTHS                                          */
    /*                                                                       */
    /* @description:                                                         */
    /*    The maximum number of standard and snap widths in either the       */
    /*    horizontal or vertical direction.  See @PS_Globals_WidthsRec.      */
    /*                                                                       */
  #define PS_GLOBALS_MAX_STD_WIDTHS  16
  
  
    /* standard and snap width */
    typedef struct  PSH_WidthRec_
    {
      FT_Int  org;
      FT_Pos  cur;
      FT_Pos  fit;
  
    } PSH_WidthRec, *PSH_Width;
  
  
    /* standard and snap widths table */
    typedef struct  PSH_WidthsRec_
    {
      FT_UInt       count;
      PSH_WidthRec  widths[PS_GLOBALS_MAX_STD_WIDTHS];
  
    } PSH_WidthsRec, *PSH_Widths;
  
  
    typedef struct  PSH_DimensionRec_
    {
      PSH_WidthsRec  stdw;
      FT_Fixed       scale_mult;
      FT_Fixed       scale_delta;
  
    } PSH_DimensionRec, *PSH_Dimension;
  
  
    /* blue zone descriptor */
    typedef struct  PSH_Blue_ZoneRec_
    {
      FT_Int  org_ref;
      FT_Int  org_delta;
      FT_Int  org_top;
      FT_Int  org_bottom;
  
      FT_Pos  cur_ref;
      FT_Pos  cur_delta;
      FT_Pos  cur_bottom;
      FT_Pos  cur_top;
  
    } PSH_Blue_ZoneRec, *PSH_Blue_Zone;
  
  
    typedef struct  PSH_Blue_TableRec_
    {
      FT_UInt           count;
      PSH_Blue_ZoneRec  zones[PS_GLOBALS_MAX_BLUE_ZONES];
  
    } PSH_Blue_TableRec, *PSH_Blue_Table;
  
  
    /* blue zones table */
    typedef struct  PSH_BluesRec_
    {
      PSH_Blue_TableRec  normal_top;
      PSH_Blue_TableRec  normal_bottom;
      PSH_Blue_TableRec  family_top;
      PSH_Blue_TableRec  family_bottom;
  
      FT_Fixed           blue_scale;
      FT_Int             blue_shift;
      FT_Int             blue_threshold;
      FT_Int             blue_fuzz;
      FT_Bool            no_overshoots;
  
    } PSH_BluesRec, *PSH_Blues;
  
  
    /* font globals.                                         */
    /* dimension 0 => X coordinates + vertical hints/stems   */
    /* dimension 1 => Y coordinates + horizontal hints/stems */
    typedef struct  PSH_GlobalsRec_
    {
      FT_Memory         memory;
      PSH_DimensionRec  dimension[2];
      PSH_BluesRec      blues;
  
    } PSH_GlobalsRec;
  
  
  #define PSH_BLUE_ALIGN_NONE  0
  #define PSH_BLUE_ALIGN_TOP   1
  #define PSH_BLUE_ALIGN_BOT   2
  
  
    typedef struct  PSH_AlignmentRec_
    {
      int     align;
      FT_Pos  align_top;
      FT_Pos  align_bot;
  
    } PSH_AlignmentRec, *PSH_Alignment;
  
  
    FT_LOCAL( void )
    psh_globals_funcs_init( PSH_Globals_FuncsRec*  funcs );
  
  
    /* snap a stem width to fitter coordinates.  `org_width' is in font */
    /* units.  The result is in device pixels (26.6 format).            */
    FT_LOCAL( FT_Pos )
    psh_dimension_snap_width( PSH_Dimension  dimension,
                              FT_Int         org_width );
  
    /* snap a stem to one or two blue zones */
    FT_LOCAL( void )
    psh_blues_snap_stem( PSH_Blues      blues,
                         FT_Int         stem_top,
                         FT_Int         stem_bot,
                         PSH_Alignment  alignment );
    /* */
  
  #ifdef DEBUG_HINTER
    extern PSH_Globals  ps_debug_globals;
  #endif
  
  
  FT_END_HEADER
  
  
  #endif /* __PSHGLOB_H__ */
  
  
  /* END */
  

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