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/****************************************************************************
*
* pshrec.h
*
* Postscript (Type1/Type2) hints recorder (specification).
*
* Copyright (C) 2001-2020 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.
*
*/
/***************************************************************************
*
* The functions defined here are called from the Type 1, CID and CFF
* font drivers to record the hints of a given character/glyph.
*
* The hints are recorded in a unified format, and are later processed
* by the `optimizer' and `fitter' to adjust the outlines to the pixel
* grid.
*
*/
#ifndef PSHREC_H_
#define PSHREC_H_
#include <ft2build.h>
#include <freetype/internal/pshints.h>
#include "pshglob.h"
FT_BEGIN_HEADER
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** GLYPH HINTS RECORDER INTERNALS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* handle to hint record */
typedef struct PS_HintRec_* PS_Hint;
/* hint types */
typedef enum PS_Hint_Type_
{
PS_HINT_TYPE_1 = 1,
PS_HINT_TYPE_2 = 2
} PS_Hint_Type;
/* hint flags */
#define PS_HINT_FLAG_GHOST 1U
#define PS_HINT_FLAG_BOTTOM 2U
/* hint descriptor */
typedef struct PS_HintRec_
{
FT_Int pos;
FT_Int len;
FT_UInt flags;
} PS_HintRec;
#define ps_hint_is_active( x ) ( (x)->flags & PS_HINT_FLAG_ACTIVE )
#define ps_hint_is_ghost( x ) ( (x)->flags & PS_HINT_FLAG_GHOST )
#define ps_hint_is_bottom( x ) ( (x)->flags & PS_HINT_FLAG_BOTTOM )
/* hints table descriptor */
typedef struct PS_Hint_TableRec_
{
FT_UInt num_hints;
FT_UInt max_hints;
PS_Hint hints;
} PS_Hint_TableRec, *PS_Hint_Table;
/* hint and counter mask descriptor */
typedef struct PS_MaskRec_
{
FT_UInt num_bits;
FT_UInt max_bits;
FT_Byte* bytes;
FT_UInt end_point;
} PS_MaskRec, *PS_Mask;
/* masks and counters table descriptor */
typedef struct PS_Mask_TableRec_
{
FT_UInt num_masks;
FT_UInt max_masks;
PS_Mask masks;
} PS_Mask_TableRec, *PS_Mask_Table;
/* dimension-specific hints descriptor */
typedef struct PS_DimensionRec_
{
PS_Hint_TableRec hints;
PS_Mask_TableRec masks;
PS_Mask_TableRec counters;
} PS_DimensionRec, *PS_Dimension;
/* glyph hints descriptor */
/* dimension 0 => X coordinates + vertical hints/stems */
/* dimension 1 => Y coordinates + horizontal hints/stems */
typedef struct PS_HintsRec_
{
FT_Memory memory;
FT_Error error;
FT_UInt32 magic;
PS_Hint_Type hint_type;
PS_DimensionRec dimension[2];
} PS_HintsRec, *PS_Hints;
/* */
/* initialize hints recorder */
FT_LOCAL( void )
ps_hints_init( PS_Hints hints,
FT_Memory memory );
/* finalize hints recorder */
FT_LOCAL( void )
ps_hints_done( PS_Hints hints );
/* initialize Type1 hints recorder interface */
FT_LOCAL( void )
t1_hints_funcs_init( T1_Hints_FuncsRec* funcs );
/* initialize Type2 hints recorder interface */
FT_LOCAL( void )
t2_hints_funcs_init( T2_Hints_FuncsRec* funcs );
#ifdef DEBUG_HINTER
extern PS_Hints ps_debug_hints;
extern int ps_debug_no_horz_hints;
extern int ps_debug_no_vert_hints;
#endif
/* */
FT_END_HEADER
#endif /* PSHREC_H_ */
/* END */