ref: 75c92428225428c8fde2d015f010e608a0b12f1d
dir: purgatorio/libfreetype/pshalgo1.h
/***************************************************************************/
/* */
/* pshalgo1.h */
/* */
/* PostScript hinting algorithm 1 (specification). */
/* */
/* 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 __PSHALGO1_H__
#define __PSHALGO1_H__
#include "pshrec.h"
FT_BEGIN_HEADER
typedef struct PSH1_HintRec_* PSH1_Hint;
typedef enum
{
PSH1_HINT_FLAG_GHOST = PS_HINT_FLAG_GHOST,
PSH1_HINT_FLAG_BOTTOM = PS_HINT_FLAG_BOTTOM,
PSH1_HINT_FLAG_ACTIVE = 4
} PSH1_Hint_Flags;
#define psh1_hint_is_active( x ) \
( ( (x)->flags & PSH1_HINT_FLAG_ACTIVE ) != 0 )
#define psh1_hint_is_ghost( x ) \
( ( (x)->flags & PSH1_HINT_FLAG_GHOST ) != 0 )
#define psh1_hint_activate( x ) (x)->flags |= PSH1_HINT_FLAG_ACTIVE
#define psh1_hint_deactivate( x ) (x)->flags &= ~PSH1_HINT_FLAG_ACTIVE
typedef struct PSH1_HintRec_
{
FT_Int org_pos;
FT_Int org_len;
FT_Pos cur_pos;
FT_Pos cur_len;
FT_UInt flags;
PSH1_Hint parent;
FT_Int order;
} PSH1_HintRec;
/* this is an interpolation zone used for strong points; */
/* weak points are interpolated according to their strong */
/* neighbours */
typedef struct PSH1_ZoneRec_
{
FT_Fixed scale;
FT_Fixed delta;
FT_Pos min;
FT_Pos max;
} PSH1_ZoneRec, *PSH1_Zone;
typedef struct PSH1_Hint_TableRec_
{
FT_UInt max_hints;
FT_UInt num_hints;
PSH1_Hint hints;
PSH1_Hint* sort;
PSH1_Hint* sort_global;
FT_UInt num_zones;
PSH1_Zone zones;
PSH1_Zone zone;
PS_Mask_Table hint_masks;
PS_Mask_Table counter_masks;
} PSH1_Hint_TableRec, *PSH1_Hint_Table;
extern FT_Error
ps1_hints_apply( PS_Hints ps_hints,
FT_Outline* outline,
PSH_Globals globals,
FT_Render_Mode hint_mode );
#ifdef DEBUG_HINTER
extern PSH1_Hint_Table ps1_debug_hint_table;
typedef void
(*PSH1_HintFunc)( PSH1_Hint hint,
FT_Bool vertical );
extern PSH1_HintFunc ps1_debug_hint_func;
#endif
FT_END_HEADER
#endif /* __PSHALGO1_H__ */
/* END */