111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/***************************************************************************/
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/* */
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/* pshfit.h */
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/* */
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/* Postscript (Type 1/CFF) outline grid-fitter */
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/* */
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/* Copyright 2001 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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/* process the hints provided by the Postscript hints recorder. This */
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/* means sorting and scaling the hints, calling the "optimiser" to */
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/* process them, then grid-fitting the glyph outline based on the */
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/* optimised hints information. */
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/* */
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/* (the real hinting "intelligence" is in "pshoptim.h", not here) */
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/* */
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/***************************************************************************/
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#ifndef __PS_HINTER_FITTER_H__
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#define __PS_HINTER_FITTER_H__
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#include "pshrec.h"
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FT_BEGIN_HEADER
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typedef struct PSH_HintRec_* PSH_Hint;
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typedef enum
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{
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PSH_HINT_FLAG_GHOST = PS_HINT_FLAG_GHOST,
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PSH_HINT_FLAG_BOTTOM = PS_HINT_FLAG_BOTTOM,
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PSH_HINT_FLAG_ACTIVE = 4
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} PSH_Hint_Flags;
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#define psh_hint_is_active(x) (((x)->flags & PSH_HINT_FLAG_ACTIVE) != 0)
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#define psh_hint_is_ghost(x) (((x)->flags & PSH_HINT_FLAG_GHOST ) != 0)
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#define psh_hint_activate(x) (x)->flags |= PSH_HINT_FLAG_ACTIVE
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#define psh_hint_deactivate(x) (x)->flags &= ~PSH_HINT_FLAG_ACTIVE
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typedef struct PSH_HintRec_
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{
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FT_Int org_pos;
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FT_Int org_len;
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FT_Pos cur_pos;
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FT_Pos cur_len;
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FT_UInt flags;
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PSH_Hint parent;
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FT_Int order;
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} PSH_HintRec;
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/* this is an interpolation zone used for strong points */
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/* weak points are interpolated according to their strong */
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/* neighbours.. */
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typedef struct PSH_ZoneRec_
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{
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FT_Fixed scale;
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FT_Fixed delta;
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FT_Pos min;
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FT_Pos max;
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} PSH_ZoneRec, *PSH_Zone;
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typedef struct PSH_Hint_TableRec_
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{
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FT_UInt max_hints;
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FT_UInt num_hints;
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PSH_Hint hints;
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PSH_Hint* sort;
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PSH_Hint* sort_global;
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FT_UInt num_zones;
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PSH_Zone zones;
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PSH_Zone zone;
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PS_Mask_Table hint_masks;
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PS_Mask_Table counter_masks;
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} PSH_Hint_TableRec, *PSH_Hint_Table;
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FT_LOCAL FT_Error
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ps_hints_apply( PS_Hints ps_hints,
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FT_Outline* outline,
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PSH_Globals globals );
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#ifdef DEBUG_VIEW
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extern int ps_debug_no_horz_hints;
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extern int ps_debug_no_vert_hints;
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extern PSH_Hint_Table ps_debug_hint_table;
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typedef void (*PSH_HintFunc)( PSH_Hint hint, FT_Bool vertical );
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extern PSH_HintFunc ps_debug_hint_func;
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#endif
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FT_END_HEADER
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#endif /* __PS_HINTER_FITTER_H__ */
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