reactos/lib/3rdparty/freetype/src/autofit/afglobal.h

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  afglobal.h                                                             */
   4 /*                                                                         */
   5 /*    Auto-fitter routines to compute global hinting values                */
   6 /*    (specification).                                                     */
   7 /*                                                                         */
   8 /*  Copyright 2003-2005, 2007, 2009, 2011-2012 by                          */
   9 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  10 /*                                                                         */
  11 /*  This file is part of the FreeType project, and may only be used,       */
  12 /*  modified, and distributed under the terms of the FreeType project      */
  13 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  14 /*  this file you indicate that you have read the license and              */
  15 /*  understand and accept it fully.                                        */
  16 /*                                                                         */
  17 /***************************************************************************/
  18
  19
  20 #ifndef __AFGLOBAL_H__
  21 #define __AFGLOBAL_H__
  22
  23
  24 #include "aftypes.h"
  25 #include "afmodule.h"
  26
  27
  28 FT_BEGIN_HEADER
  29
  30
  31   /*
  32    *  Default values and flags for both autofitter globals (found in
  33    *  AF_ModuleRec) and face globals (in AF_FaceGlobalsRec).
  34    */
  35
  36   /* index of fallback script in `af_script_classes' */
  37 #define AF_SCRIPT_FALLBACK  2
  38   /* a bit mask indicating an uncovered glyph        */
  39 #define AF_SCRIPT_NONE      0x7F
  40   /* if this flag is set, we have an ASCII digit     */
  41 #define AF_DIGIT            0x80
  42
  43   /* `increase-x-height' property */
  44 #define AF_PROP_INCREASE_X_HEIGHT_MIN  6
  45 #define AF_PROP_INCREASE_X_HEIGHT_MAX  0
  46
  47
  48   /************************************************************************/
  49   /************************************************************************/
  50   /*****                                                              *****/
  51   /*****                  F A C E   G L O B A L S                     *****/
  52   /*****                                                              *****/
  53   /************************************************************************/
  54   /************************************************************************/
  55
  56
  57   /*
  58    *  Note that glyph_scripts[] is used to map each glyph into
  59    *  an index into the `af_script_classes' array.
  60    *
  61    */
  62   typedef struct  AF_FaceGlobalsRec_
  63   {
  64     FT_Face           face;
  65     FT_Long           glyph_count;    /* same as face->num_glyphs */
  66     FT_Byte*          glyph_scripts;
  67
  68     /* per-face auto-hinter properties */
  69     FT_UInt           increase_x_height;
  70
  71     AF_ScriptMetrics  metrics[AF_SCRIPT_MAX];
  72
  73     AF_Module         module;         /* to access global properties */
  74
  75   } AF_FaceGlobalsRec;
  76
  77
  78   /*
  79    *  model the global hints data for a given face, decomposed into
  80    *  script-specific items
  81    */
  82
  83   FT_LOCAL( FT_Error )
  84   af_face_globals_new( FT_Face          face,
  85                        AF_FaceGlobals  *aglobals,
  86                        AF_Module        module );
  87
  88   FT_LOCAL( FT_Error )
  89   af_face_globals_get_metrics( AF_FaceGlobals     globals,
  90                                FT_UInt            gindex,
  91                                FT_UInt            options,
  92                                AF_ScriptMetrics  *ametrics );
  93
  94   FT_LOCAL( void )
  95   af_face_globals_free( AF_FaceGlobals  globals );
  96
  97   FT_LOCAL_DEF( FT_Bool )
  98   af_face_globals_is_digit( AF_FaceGlobals  globals,
  99                             FT_UInt         gindex );
 100
 101   /* */
 102
 103
 104 FT_END_HEADER
 105
 106 #endif /* __AFGLOBAL_H__ */
 107
 108
 109 /* END */