/***************************************************************************/
/* */
/* pshglob.h */
/* */
/* Postscript hinter globals hints management. */
/* */
/* Copyright 2001 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 __PS_HINTER_GLOBALS_H__
#define __PS_HINTER_GLOBALS_H__
#include FT_FREETYPE_H
#include FT_INTERNAL_POSTSCRIPT_GLOBALS_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 std;
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;
} PSH_BluesRec, *PSH_Blues;
/* font globals */
typedef struct PSH_GlobalsRec_
{
FT_Memory memory;
PSH_DimensionRec dimension[2];
PSH_BluesRec blues;
} PSH_GlobalsRec;
typedef enum
{
PSH_BLUE_ALIGN_TOP = 1,
PSH_BLUE_ALIGN_BOT = 2
} PSH_Blue_Align;
typedef struct
{
PSH_Blue_Align 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 */
/* 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 __T1_FITTER_GLOBALS_H__
