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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /***************************************************************************/ |
| 2 | /* */ |
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| 3 | /* pshglob.h */ |
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| 4 | /* */ |
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| 5 | /* PostScript hinter global hinting management. */ |
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| 6 | /* */ |
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| 7 | /* Copyright 2001, 2002, 2003 by */ |
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| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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| 9 | /* */ |
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| 10 | /* This file is part of the FreeType project, and may only be used, */ |
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| 11 | /* modified, and distributed under the terms of the FreeType project */ |
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| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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| 13 | /* this file you indicate that you have read the license and */ |
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| 14 | /* understand and accept it fully. */ |
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| 15 | /* */ |
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| 16 | /***************************************************************************/ |
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| 17 | |||
| 18 | |||
| 19 | #ifndef __PSHGLOB_H__ |
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| 20 | #define __PSHGLOB_H__ |
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| 21 | |||
| 22 | |||
| 23 | #include FT_FREETYPE_H |
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| 24 | #include FT_INTERNAL_POSTSCRIPT_HINTS_H |
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| 25 | |||
| 26 | |||
| 27 | FT_BEGIN_HEADER |
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| 28 | |||
| 29 | |||
| 30 | /*************************************************************************/ |
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| 31 | /*************************************************************************/ |
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| 32 | /***** *****/ |
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| 33 | /***** GLOBAL HINTS INTERNALS *****/ |
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| 34 | /***** *****/ |
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| 35 | /*************************************************************************/ |
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| 36 | /*************************************************************************/ |
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| 37 | |||
| 38 | |||
| 39 | /*************************************************************************/ |
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| 40 | /* */ |
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| 41 | /* @constant: */ |
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| 42 | /* PS_GLOBALS_MAX_BLUE_ZONES */ |
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| 43 | /* */ |
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| 44 | /* @description: */ |
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| 45 | /* The maximum number of blue zones in a font global hints structure. */ |
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| 46 | /* See @PS_Globals_BluesRec. */ |
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| 47 | /* */ |
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| 48 | #define PS_GLOBALS_MAX_BLUE_ZONES 16 |
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| 49 | |||
| 50 | |||
| 51 | /*************************************************************************/ |
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| 52 | /* */ |
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| 53 | /* @constant: */ |
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| 54 | /* PS_GLOBALS_MAX_STD_WIDTHS */ |
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| 55 | /* */ |
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| 56 | /* @description: */ |
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| 57 | /* The maximum number of standard and snap widths in either the */ |
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| 58 | /* horizontal or vertical direction. See @PS_Globals_WidthsRec. */ |
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| 59 | /* */ |
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| 60 | #define PS_GLOBALS_MAX_STD_WIDTHS 16 |
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| 61 | |||
| 62 | |||
| 63 | /* standard and snap width */ |
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| 64 | typedef struct PSH_WidthRec_ |
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| 65 | { |
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| 66 | FT_Int org; |
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| 67 | FT_Pos cur; |
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| 68 | FT_Pos fit; |
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| 69 | |||
| 70 | } PSH_WidthRec, *PSH_Width; |
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| 71 | |||
| 72 | |||
| 73 | /* standard and snap widths table */ |
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| 74 | typedef struct PSH_WidthsRec_ |
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| 75 | { |
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| 76 | FT_UInt count; |
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| 77 | PSH_WidthRec widths[PS_GLOBALS_MAX_STD_WIDTHS]; |
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| 78 | |||
| 79 | } PSH_WidthsRec, *PSH_Widths; |
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| 80 | |||
| 81 | |||
| 82 | typedef struct PSH_DimensionRec_ |
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| 83 | { |
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| 84 | PSH_WidthsRec stdw; |
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| 85 | FT_Fixed scale_mult; |
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| 86 | FT_Fixed scale_delta; |
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| 87 | |||
| 88 | } PSH_DimensionRec, *PSH_Dimension; |
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| 89 | |||
| 90 | |||
| 91 | /* blue zone descriptor */ |
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| 92 | typedef struct PSH_Blue_ZoneRec_ |
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| 93 | { |
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| 94 | FT_Int org_ref; |
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| 95 | FT_Int org_delta; |
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| 96 | FT_Int org_top; |
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| 97 | FT_Int org_bottom; |
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| 98 | |||
| 99 | FT_Pos cur_ref; |
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| 100 | FT_Pos cur_delta; |
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| 101 | FT_Pos cur_bottom; |
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| 102 | FT_Pos cur_top; |
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| 103 | |||
| 104 | } PSH_Blue_ZoneRec, *PSH_Blue_Zone; |
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| 105 | |||
| 106 | |||
| 107 | typedef struct PSH_Blue_TableRec_ |
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| 108 | { |
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| 109 | FT_UInt count; |
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| 110 | PSH_Blue_ZoneRec zones[PS_GLOBALS_MAX_BLUE_ZONES]; |
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| 111 | |||
| 112 | } PSH_Blue_TableRec, *PSH_Blue_Table; |
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| 113 | |||
| 114 | |||
| 115 | /* blue zones table */ |
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| 116 | typedef struct PSH_BluesRec_ |
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| 117 | { |
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| 118 | PSH_Blue_TableRec normal_top; |
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| 119 | PSH_Blue_TableRec normal_bottom; |
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| 120 | PSH_Blue_TableRec family_top; |
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| 121 | PSH_Blue_TableRec family_bottom; |
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| 122 | |||
| 123 | FT_Fixed blue_scale; |
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| 124 | FT_Int blue_shift; |
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| 125 | FT_Int blue_threshold; |
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| 126 | FT_Int blue_fuzz; |
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| 127 | FT_Bool no_overshoots; |
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| 128 | |||
| 129 | } PSH_BluesRec, *PSH_Blues; |
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| 130 | |||
| 131 | |||
| 132 | /* font globals. */ |
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| 133 | /* dimension 0 => X coordinates + vertical hints/stems */ |
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| 134 | /* dimension 1 => Y coordinates + horizontal hints/stems */ |
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| 135 | typedef struct PSH_GlobalsRec_ |
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| 136 | { |
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| 137 | FT_Memory memory; |
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| 138 | PSH_DimensionRec dimension[2]; |
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| 139 | PSH_BluesRec blues; |
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| 140 | |||
| 141 | } PSH_GlobalsRec; |
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| 142 | |||
| 143 | |||
| 144 | #define PSH_BLUE_ALIGN_NONE 0 |
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| 145 | #define PSH_BLUE_ALIGN_TOP 1 |
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| 146 | #define PSH_BLUE_ALIGN_BOT 2 |
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| 147 | |||
| 148 | |||
| 149 | typedef struct PSH_AlignmentRec_ |
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| 150 | { |
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| 151 | int align; |
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| 152 | FT_Pos align_top; |
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| 153 | FT_Pos align_bot; |
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| 154 | |||
| 155 | } PSH_AlignmentRec, *PSH_Alignment; |
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| 156 | |||
| 157 | |||
| 158 | FT_LOCAL( void ) |
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| 159 | psh_globals_funcs_init( PSH_Globals_FuncsRec* funcs ); |
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| 160 | |||
| 161 | |||
| 162 | #if 0 |
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| 163 | /* snap a stem width to fitter coordinates. `org_width' is in font */ |
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| 164 | /* units. The result is in device pixels (26.6 format). */ |
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| 165 | FT_LOCAL( FT_Pos ) |
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| 166 | psh_dimension_snap_width( PSH_Dimension dimension, |
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| 167 | FT_Int org_width ); |
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| 168 | #endif |
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| 169 | |||
| 170 | FT_LOCAL( FT_Error ) |
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| 171 | psh_globals_set_scale( PSH_Globals globals, |
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| 172 | FT_Fixed x_scale, |
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| 173 | FT_Fixed y_scale, |
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| 174 | FT_Fixed x_delta, |
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| 175 | FT_Fixed y_delta ); |
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| 176 | |||
| 177 | /* snap a stem to one or two blue zones */ |
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| 178 | FT_LOCAL( void ) |
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| 179 | psh_blues_snap_stem( PSH_Blues blues, |
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| 180 | FT_Int stem_top, |
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| 181 | FT_Int stem_bot, |
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| 182 | PSH_Alignment alignment ); |
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| 183 | /* */ |
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| 184 | |||
| 185 | #ifdef DEBUG_HINTER |
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| 186 | extern PSH_Globals ps_debug_globals; |
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| 187 | #endif |
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| 188 | |||
| 189 | |||
| 190 | FT_END_HEADER |
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| 191 | |||
| 192 | |||
| 193 | #endif /* __PSHGLOB_H__ */ |
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| 194 | |||
| 195 | |||
| 196 | /* END */ |