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 */ 110
