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/***************************************************************************/
/* */
/* afglobal.h */
/* */
/* Auto-fitter routines to compute global hinting values */
/* (specification). */
/* */
/* Copyright 2003-2005, 2007, 2009, 2011-2012 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 __AFGLOBAL_H__
#define __AFGLOBAL_H__
#include "aftypes.h"
#include "afmodule.h"
FT_BEGIN_HEADER
/*
* Default values and flags for both autofitter globals (found in
* AF_ModuleRec) and face globals (in AF_FaceGlobalsRec).
*/
/* index of fallback script in `af_script_classes' */
#define AF_SCRIPT_FALLBACK 2
/* a bit mask indicating an uncovered glyph */
#define AF_SCRIPT_NONE 0x7F
/* if this flag is set, we have an ASCII digit */
#define AF_DIGIT 0x80
/* `increase-x-height' property */
#define AF_PROP_INCREASE_X_HEIGHT_MIN 6
#define AF_PROP_INCREASE_X_HEIGHT_MAX 0
/************************************************************************/
/************************************************************************/
/***** *****/
/***** F A C E G L O B A L S *****/
/***** *****/
/************************************************************************/
/************************************************************************/
/*
* Note that glyph_scripts[] is used to map each glyph into
* an index into the `af_script_classes' array.
*
*/
typedef struct AF_FaceGlobalsRec_
{
FT_Face face;
FT_Long glyph_count; /* same as face->num_glyphs */
FT_Byte* glyph_scripts;
/* per-face auto-hinter properties */
FT_UInt increase_x_height;
AF_ScriptMetrics metrics[AF_SCRIPT_MAX];
AF_Module module; /* to access global properties */
} AF_FaceGlobalsRec;
/*
* model the global hints data for a given face, decomposed into
* script-specific items
*/
FT_LOCAL( FT_Error )
af_face_globals_new( FT_Face face,
AF_FaceGlobals *aglobals,
AF_Module module );
FT_LOCAL( FT_Error )
af_face_globals_get_metrics( AF_FaceGlobals globals,
FT_UInt gindex,
FT_UInt options,
AF_ScriptMetrics *ametrics );
FT_LOCAL( void )
af_face_globals_free( AF_FaceGlobals globals );
FT_LOCAL_DEF( FT_Bool )
af_face_globals_is_digit( AF_FaceGlobals globals,
FT_UInt gindex );
/* */
FT_END_HEADER
#endif /* __AFGLOBAL_H__ */
/* END */
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