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/****************************************************************************
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*
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* pshglob.h
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*
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* PostScript hinter global hinting management.
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*
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* Copyright (C) 2001-2019 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 PSHGLOB_H_
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#define PSHGLOB_H_
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#include FT_FREETYPE_H
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#include FT_INTERNAL_POSTSCRIPT_HINTS_H
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FT_BEGIN_HEADER
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** GLOBAL HINTS INTERNALS *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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/**************************************************************************
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*
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* @constant:
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* PS_GLOBALS_MAX_BLUE_ZONES
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*
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* @description:
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* The maximum number of blue zones in a font global hints structure.
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* See @PS_Globals_BluesRec.
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*/
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#define PS_GLOBALS_MAX_BLUE_ZONES 16
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/**************************************************************************
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*
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* @constant:
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* PS_GLOBALS_MAX_STD_WIDTHS
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*
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* @description:
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* The maximum number of standard and snap widths in either the
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* horizontal or vertical direction. See @PS_Globals_WidthsRec.
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*/
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#define PS_GLOBALS_MAX_STD_WIDTHS 16
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/* standard and snap width */
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typedef struct PSH_WidthRec_
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{
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FT_Int org;
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FT_Pos cur;
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FT_Pos fit;
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} PSH_WidthRec, *PSH_Width;
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/* standard and snap widths table */
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typedef struct PSH_WidthsRec_
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{
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FT_UInt count;
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PSH_WidthRec widths[PS_GLOBALS_MAX_STD_WIDTHS];
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} PSH_WidthsRec, *PSH_Widths;
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typedef struct PSH_DimensionRec_
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{
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PSH_WidthsRec stdw;
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FT_Fixed scale_mult;
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FT_Fixed scale_delta;
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} PSH_DimensionRec, *PSH_Dimension;
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/* blue zone descriptor */
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typedef struct PSH_Blue_ZoneRec_
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{
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FT_Int org_ref;
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FT_Int org_delta;
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FT_Int org_top;
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FT_Int org_bottom;
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FT_Pos cur_ref;
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FT_Pos cur_delta;
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FT_Pos cur_bottom;
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FT_Pos cur_top;
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} PSH_Blue_ZoneRec, *PSH_Blue_Zone;
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typedef struct PSH_Blue_TableRec_
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{
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FT_UInt count;
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PSH_Blue_ZoneRec zones[PS_GLOBALS_MAX_BLUE_ZONES];
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} PSH_Blue_TableRec, *PSH_Blue_Table;
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/* blue zones table */
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typedef struct PSH_BluesRec_
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{
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PSH_Blue_TableRec normal_top;
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PSH_Blue_TableRec normal_bottom;
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PSH_Blue_TableRec family_top;
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PSH_Blue_TableRec family_bottom;
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FT_Fixed blue_scale;
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FT_Int blue_shift;
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FT_Int blue_threshold;
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FT_Int blue_fuzz;
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FT_Bool no_overshoots;
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} PSH_BluesRec, *PSH_Blues;
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/* font globals. */
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/* dimension 0 => X coordinates + vertical hints/stems */
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/* dimension 1 => Y coordinates + horizontal hints/stems */
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typedef struct PSH_GlobalsRec_
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{
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FT_Memory memory;
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PSH_DimensionRec dimension[2];
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PSH_BluesRec blues;
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} PSH_GlobalsRec;
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#define PSH_BLUE_ALIGN_NONE 0
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#define PSH_BLUE_ALIGN_TOP 1
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#define PSH_BLUE_ALIGN_BOT 2
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typedef struct PSH_AlignmentRec_
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{
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int align;
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FT_Pos align_top;
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FT_Pos align_bot;
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} PSH_AlignmentRec, *PSH_Alignment;
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FT_LOCAL( void )
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psh_globals_funcs_init( PSH_Globals_FuncsRec* funcs );
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#if 0
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/* snap a stem width to fitter coordinates. `org_width' is in font */
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/* units. The result is in device pixels (26.6 format). */
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FT_LOCAL( FT_Pos )
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psh_dimension_snap_width( PSH_Dimension dimension,
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FT_Int org_width );
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#endif
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FT_LOCAL( void )
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psh_globals_set_scale( PSH_Globals globals,
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FT_Fixed x_scale,
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FT_Fixed y_scale,
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FT_Fixed x_delta,
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FT_Fixed y_delta );
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/* snap a stem to one or two blue zones */
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FT_LOCAL( void )
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psh_blues_snap_stem( PSH_Blues blues,
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FT_Int stem_top,
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FT_Int stem_bot,
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PSH_Alignment alignment );
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/* */
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#ifdef DEBUG_HINTER
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extern PSH_Globals ps_debug_globals;
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#endif
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FT_END_HEADER
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#endif /* PSHGLOB_H_ */
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/* END */
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