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| 1 /***************************************************************************/ | |
| 2 /* */ | |
| 3 /* pshrec.h */ | |
| 4 /* */ | |
| 5 /* Postscript (Type1/Type2) hints recorder (specification). */ | |
| 6 /* */ | |
| 7 /* Copyright 2001, 2002, 2003, 2006, 2008 by */ | |
| 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
| 9 /* */ | |
| 10 /* This file is part of the FreeType project, and may only be used, */ | |
| 11 /* modified, and distributed under the terms of the FreeType project */ | |
| 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
| 13 /* this file you indicate that you have read the license and */ | |
| 14 /* understand and accept it fully. */ | |
| 15 /* */ | |
| 16 /***************************************************************************/ | |
| 17 | |
| 18 | |
| 19 /**************************************************************************/ | |
| 20 /* */ | |
| 21 /* The functions defined here are called from the Type 1, CID and CFF */ | |
| 22 /* font drivers to record the hints of a given character/glyph. */ | |
| 23 /* */ | |
| 24 /* The hints are recorded in a unified format, and are later processed */ | |
| 25 /* by the `optimizer' and `fitter' to adjust the outlines to the pixel */ | |
| 26 /* grid. */ | |
| 27 /* */ | |
| 28 /**************************************************************************/ | |
| 29 | |
| 30 | |
| 31 #ifndef __PSHREC_H__ | |
| 32 #define __PSHREC_H__ | |
| 33 | |
| 34 | |
| 35 #include "../../include/ft2build.h" | |
| 36 #include "../../include/freetype/internal/pshints.h" | |
| 37 #include "pshglob.h" | |
| 38 | |
| 39 | |
| 40 FT_BEGIN_HEADER | |
| 41 | |
| 42 | |
| 43 /*************************************************************************/ | |
| 44 /*************************************************************************/ | |
| 45 /***** *****/ | |
| 46 /***** GLYPH HINTS RECORDER INTERNALS *****/ | |
| 47 /***** *****/ | |
| 48 /*************************************************************************/ | |
| 49 /*************************************************************************/ | |
| 50 | |
| 51 /* handle to hint record */ | |
| 52 typedef struct PS_HintRec_* PS_Hint; | |
| 53 | |
| 54 /* hint types */ | |
| 55 typedef enum PS_Hint_Type_ | |
| 56 { | |
| 57 PS_HINT_TYPE_1 = 1, | |
| 58 PS_HINT_TYPE_2 = 2 | |
| 59 | |
| 60 } PS_Hint_Type; | |
| 61 | |
| 62 | |
| 63 /* hint flags */ | |
| 64 typedef enum PS_Hint_Flags_ | |
| 65 { | |
| 66 PS_HINT_FLAG_GHOST = 1, | |
| 67 PS_HINT_FLAG_BOTTOM = 2 | |
| 68 | |
| 69 } PS_Hint_Flags; | |
| 70 | |
| 71 | |
| 72 /* hint descriptor */ | |
| 73 typedef struct PS_HintRec_ | |
| 74 { | |
| 75 FT_Int pos; | |
| 76 FT_Int len; | |
| 77 FT_UInt flags; | |
| 78 | |
| 79 } PS_HintRec; | |
| 80 | |
| 81 | |
| 82 #define ps_hint_is_active( x ) ( (x)->flags & PS_HINT_FLAG_ACTIVE ) | |
| 83 #define ps_hint_is_ghost( x ) ( (x)->flags & PS_HINT_FLAG_GHOST ) | |
| 84 #define ps_hint_is_bottom( x ) ( (x)->flags & PS_HINT_FLAG_BOTTOM ) | |
| 85 | |
| 86 | |
| 87 /* hints table descriptor */ | |
| 88 typedef struct PS_Hint_TableRec_ | |
| 89 { | |
| 90 FT_UInt num_hints; | |
| 91 FT_UInt max_hints; | |
| 92 PS_Hint hints; | |
| 93 | |
| 94 } PS_Hint_TableRec, *PS_Hint_Table; | |
| 95 | |
| 96 | |
| 97 /* hint and counter mask descriptor */ | |
| 98 typedef struct PS_MaskRec_ | |
| 99 { | |
| 100 FT_UInt num_bits; | |
| 101 FT_UInt max_bits; | |
| 102 FT_Byte* bytes; | |
| 103 FT_UInt end_point; | |
| 104 | |
| 105 } PS_MaskRec, *PS_Mask; | |
| 106 | |
| 107 | |
| 108 /* masks and counters table descriptor */ | |
| 109 typedef struct PS_Mask_TableRec_ | |
| 110 { | |
| 111 FT_UInt num_masks; | |
| 112 FT_UInt max_masks; | |
| 113 PS_Mask masks; | |
| 114 | |
| 115 } PS_Mask_TableRec, *PS_Mask_Table; | |
| 116 | |
| 117 | |
| 118 /* dimension-specific hints descriptor */ | |
| 119 typedef struct PS_DimensionRec_ | |
| 120 { | |
| 121 PS_Hint_TableRec hints; | |
| 122 PS_Mask_TableRec masks; | |
| 123 PS_Mask_TableRec counters; | |
| 124 | |
| 125 } PS_DimensionRec, *PS_Dimension; | |
| 126 | |
| 127 | |
| 128 /* glyph hints descriptor */ | |
| 129 /* dimension 0 => X coordinates + vertical hints/stems */ | |
| 130 /* dimension 1 => Y coordinates + horizontal hints/stems */ | |
| 131 typedef struct PS_HintsRec_ | |
| 132 { | |
| 133 FT_Memory memory; | |
| 134 FT_Error error; | |
| 135 FT_UInt32 magic; | |
| 136 PS_Hint_Type hint_type; | |
| 137 PS_DimensionRec dimension[2]; | |
| 138 | |
| 139 } PS_HintsRec, *PS_Hints; | |
| 140 | |
| 141 /* */ | |
| 142 | |
| 143 /* initialize hints recorder */ | |
| 144 FT_LOCAL( FT_Error ) | |
| 145 ps_hints_init( PS_Hints hints, | |
| 146 FT_Memory memory ); | |
| 147 | |
| 148 /* finalize hints recorder */ | |
| 149 FT_LOCAL( void ) | |
| 150 ps_hints_done( PS_Hints hints ); | |
| 151 | |
| 152 /* initialize Type1 hints recorder interface */ | |
| 153 FT_LOCAL( void ) | |
| 154 t1_hints_funcs_init( T1_Hints_FuncsRec* funcs ); | |
| 155 | |
| 156 /* initialize Type2 hints recorder interface */ | |
| 157 FT_LOCAL( void ) | |
| 158 t2_hints_funcs_init( T2_Hints_FuncsRec* funcs ); | |
| 159 | |
| 160 | |
| 161 #ifdef DEBUG_HINTER | |
| 162 extern PS_Hints ps_debug_hints; | |
| 163 extern int ps_debug_no_horz_hints; | |
| 164 extern int ps_debug_no_vert_hints; | |
| 165 #endif | |
| 166 | |
| 167 /* */ | |
| 168 | |
| 169 | |
| 170 FT_END_HEADER | |
| 171 | |
| 172 | |
| 173 #endif /* __PS_HINTER_RECORD_H__ */ | |
| 174 | |
| 175 | |
| 176 /* END */ | |
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