110 lines
3.8 KiB
C
110 lines
3.8 KiB
C
/***************************************************************************/
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/* */
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/* afglobal.h */
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/* */
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/* Auto-fitter routines to compute global hinting values */
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/* (specification). */
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/* */
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/* Copyright 2003-2005, 2007, 2009, 2011-2012 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __AFGLOBAL_H__
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#define __AFGLOBAL_H__
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#include "aftypes.h"
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#include "afmodule.h"
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FT_BEGIN_HEADER
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/*
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* Default values and flags for both autofitter globals (found in
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* AF_ModuleRec) and face globals (in AF_FaceGlobalsRec).
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*/
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/* index of fallback script in `af_script_classes' */
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#define AF_SCRIPT_FALLBACK 2
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/* a bit mask indicating an uncovered glyph */
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#define AF_SCRIPT_NONE 0x7F
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/* if this flag is set, we have an ASCII digit */
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#define AF_DIGIT 0x80
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/* `increase-x-height' property */
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#define AF_PROP_INCREASE_X_HEIGHT_MIN 6
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#define AF_PROP_INCREASE_X_HEIGHT_MAX 0
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/************************************************************************/
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/************************************************************************/
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/***** *****/
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/***** F A C E G L O B A L S *****/
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/***** *****/
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/************************************************************************/
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/************************************************************************/
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/*
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* Note that glyph_scripts[] is used to map each glyph into
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* an index into the `af_script_classes' array.
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*
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*/
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typedef struct AF_FaceGlobalsRec_
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{
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FT_Face face;
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FT_Long glyph_count; /* same as face->num_glyphs */
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FT_Byte* glyph_scripts;
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/* per-face auto-hinter properties */
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FT_UInt increase_x_height;
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AF_ScriptMetrics metrics[AF_SCRIPT_MAX];
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AF_Module module; /* to access global properties */
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} AF_FaceGlobalsRec;
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/*
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* model the global hints data for a given face, decomposed into
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* script-specific items
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*/
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FT_LOCAL( FT_Error )
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af_face_globals_new( FT_Face face,
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AF_FaceGlobals *aglobals,
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AF_Module module );
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FT_LOCAL( FT_Error )
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af_face_globals_get_metrics( AF_FaceGlobals globals,
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FT_UInt gindex,
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FT_UInt options,
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AF_ScriptMetrics *ametrics );
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FT_LOCAL( void )
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af_face_globals_free( AF_FaceGlobals globals );
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FT_LOCAL_DEF( FT_Bool )
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af_face_globals_is_digit( AF_FaceGlobals globals,
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FT_UInt gindex );
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/* */
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FT_END_HEADER
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#endif /* __AFGLOBAL_H__ */
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/* END */
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