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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /***************************************************************************/ |
| 2 | /* */ |
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| 3 | /* cffgload.h */ |
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| 4 | /* */ |
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| 5 | /* OpenType Glyph Loader (specification). */ |
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| 6 | /* */ |
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| 7 | /* Copyright 1996-2004, 2006-2009, 2013 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 __CFFGLOAD_H__ |
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| 20 | #define __CFFGLOAD_H__ |
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| 21 | |||
| 22 | |||
| 23 | #include |
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| 24 | #include FT_FREETYPE_H |
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| 25 | #include "cffobjs.h" |
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| 26 | |||
| 27 | |||
| 28 | FT_BEGIN_HEADER |
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| 29 | |||
| 30 | |||
| 31 | #define CFF_MAX_OPERANDS 48 |
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| 32 | #define CFF_MAX_SUBRS_CALLS 32 |
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| 33 | #define CFF_MAX_TRANS_ELEMENTS 32 |
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| 34 | |||
| 35 | |||
| 36 | /*************************************************************************/ |
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| 37 | /* */ |
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| 38 | /* |
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| 39 | /* CFF_Builder */ |
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| 40 | /* */ |
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| 41 | /* |
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| 42 | /* A structure used during glyph loading to store its outline. */ |
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| 43 | /* */ |
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| 44 | /* |
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| 45 | /* memory :: The current memory object. */ |
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| 46 | /* */ |
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| 47 | /* face :: The current face object. */ |
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| 48 | /* */ |
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| 49 | /* glyph :: The current glyph slot. */ |
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| 50 | /* */ |
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| 51 | /* loader :: The current glyph loader. */ |
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| 52 | /* */ |
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| 53 | /* base :: The base glyph outline. */ |
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| 54 | /* */ |
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| 55 | /* current :: The current glyph outline. */ |
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| 56 | /* */ |
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| 57 | /* pos_x :: The horizontal translation (if composite glyph). */ |
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| 58 | /* */ |
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| 59 | /* pos_y :: The vertical translation (if composite glyph). */ |
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| 60 | /* */ |
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| 61 | /* left_bearing :: The left side bearing point. */ |
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| 62 | /* */ |
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| 63 | /* advance :: The horizontal advance vector. */ |
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| 64 | /* */ |
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| 65 | /* bbox :: Unused. */ |
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| 66 | /* */ |
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| 67 | /* path_begun :: A flag which indicates that a new path has begun. */ |
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| 68 | /* */ |
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| 69 | /* load_points :: If this flag is not set, no points are loaded. */ |
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| 70 | /* */ |
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| 71 | /* no_recurse :: Set but not used. */ |
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| 72 | /* */ |
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| 73 | /* metrics_only :: A boolean indicating that we only want to compute */ |
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| 74 | /* the metrics of a given glyph, not load all of its */ |
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| 75 | /* points. */ |
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| 76 | /* */ |
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| 77 | /* hints_funcs :: Auxiliary pointer for hinting. */ |
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| 78 | /* */ |
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| 79 | /* hints_globals :: Auxiliary pointer for hinting. */ |
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| 80 | /* */ |
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| 81 | typedef struct CFF_Builder_ |
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| 82 | { |
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| 83 | FT_Memory memory; |
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| 84 | TT_Face face; |
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| 85 | CFF_GlyphSlot glyph; |
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| 86 | FT_GlyphLoader loader; |
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| 87 | FT_Outline* base; |
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| 88 | FT_Outline* current; |
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| 89 | |||
| 90 | FT_Pos pos_x; |
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| 91 | FT_Pos pos_y; |
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| 92 | |||
| 93 | FT_Vector left_bearing; |
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| 94 | FT_Vector advance; |
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| 95 | |||
| 96 | FT_BBox bbox; /* bounding box */ |
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| 97 | FT_Bool path_begun; |
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| 98 | FT_Bool load_points; |
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| 99 | FT_Bool no_recurse; |
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| 100 | |||
| 101 | FT_Bool metrics_only; |
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| 102 | |||
| 103 | void* hints_funcs; /* hinter-specific */ |
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| 104 | void* hints_globals; /* hinter-specific */ |
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| 105 | |||
| 106 | } CFF_Builder; |
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| 107 | |||
| 108 | |||
| 109 | FT_LOCAL( FT_Error ) |
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| 110 | cff_check_points( CFF_Builder* builder, |
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| 111 | FT_Int count ); |
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| 112 | |||
| 113 | FT_LOCAL( void ) |
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| 114 | cff_builder_add_point( CFF_Builder* builder, |
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| 115 | FT_Pos x, |
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| 116 | FT_Pos y, |
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| 117 | FT_Byte flag ); |
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| 118 | FT_LOCAL( FT_Error ) |
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| 119 | cff_builder_add_point1( CFF_Builder* builder, |
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| 120 | FT_Pos x, |
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| 121 | FT_Pos y ); |
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| 122 | FT_LOCAL( FT_Error ) |
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| 123 | cff_builder_start_point( CFF_Builder* builder, |
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| 124 | FT_Pos x, |
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| 125 | FT_Pos y ); |
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| 126 | FT_LOCAL( void ) |
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| 127 | cff_builder_close_contour( CFF_Builder* builder ); |
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| 128 | |||
| 129 | |||
| 130 | FT_LOCAL( FT_Int ) |
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| 131 | cff_lookup_glyph_by_stdcharcode( CFF_Font cff, |
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| 132 | FT_Int charcode ); |
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| 133 | FT_LOCAL( FT_Error ) |
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| 134 | cff_get_glyph_data( TT_Face face, |
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| 135 | FT_UInt glyph_index, |
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| 136 | FT_Byte** pointer, |
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| 137 | FT_ULong* length ); |
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| 138 | FT_LOCAL( void ) |
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| 139 | cff_free_glyph_data( TT_Face face, |
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| 140 | FT_Byte** pointer, |
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| 141 | FT_ULong length ); |
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| 142 | |||
| 143 | |||
| 144 | /* execution context charstring zone */ |
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| 145 | |||
| 146 | typedef struct CFF_Decoder_Zone_ |
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| 147 | { |
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| 148 | FT_Byte* base; |
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| 149 | FT_Byte* limit; |
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| 150 | FT_Byte* cursor; |
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| 151 | |||
| 152 | } CFF_Decoder_Zone; |
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| 153 | |||
| 154 | |||
| 155 | typedef struct CFF_Decoder_ |
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| 156 | { |
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| 157 | CFF_Builder builder; |
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| 158 | CFF_Font cff; |
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| 159 | |||
| 160 | FT_Fixed stack[CFF_MAX_OPERANDS + 1]; |
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| 161 | FT_Fixed* top; |
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| 162 | |||
| 163 | CFF_Decoder_Zone zones[CFF_MAX_SUBRS_CALLS + 1]; |
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| 164 | CFF_Decoder_Zone* zone; |
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| 165 | |||
| 166 | FT_Int flex_state; |
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| 167 | FT_Int num_flex_vectors; |
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| 168 | FT_Vector flex_vectors[7]; |
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| 169 | |||
| 170 | FT_Pos glyph_width; |
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| 171 | FT_Pos nominal_width; |
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| 172 | |||
| 173 | FT_Bool read_width; |
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| 174 | FT_Bool width_only; |
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| 175 | FT_Int num_hints; |
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| 176 | FT_Fixed buildchar[CFF_MAX_TRANS_ELEMENTS]; |
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| 177 | |||
| 178 | FT_UInt num_locals; |
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| 179 | FT_UInt num_globals; |
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| 180 | |||
| 181 | FT_Int locals_bias; |
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| 182 | FT_Int globals_bias; |
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| 183 | |||
| 184 | FT_Byte** locals; |
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| 185 | FT_Byte** globals; |
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| 186 | |||
| 187 | FT_Byte** glyph_names; /* for pure CFF fonts only */ |
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| 188 | FT_UInt num_glyphs; /* number of glyphs in font */ |
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| 189 | |||
| 190 | FT_Render_Mode hint_mode; |
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| 191 | |||
| 192 | FT_Bool seac; |
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| 193 | |||
| 194 | CFF_SubFont current_subfont; /* for current glyph_index */ |
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| 195 | |||
| 196 | } CFF_Decoder; |
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| 197 | |||
| 198 | |||
| 199 | FT_LOCAL( void ) |
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| 200 | cff_decoder_init( CFF_Decoder* decoder, |
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| 201 | TT_Face face, |
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| 202 | CFF_Size size, |
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| 203 | CFF_GlyphSlot slot, |
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| 204 | FT_Bool hinting, |
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| 205 | FT_Render_Mode hint_mode ); |
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| 206 | |||
| 207 | FT_LOCAL( FT_Error ) |
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| 208 | cff_decoder_prepare( CFF_Decoder* decoder, |
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| 209 | CFF_Size size, |
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| 210 | FT_UInt glyph_index ); |
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| 211 | |||
| 212 | #if 0 /* unused until we support pure CFF fonts */ |
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| 213 | |||
| 214 | /* Compute the maximum advance width of a font through quick parsing */ |
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| 215 | FT_LOCAL( FT_Error ) |
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| 216 | cff_compute_max_advance( TT_Face face, |
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| 217 | FT_Int* max_advance ); |
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| 218 | |||
| 219 | #endif /* 0 */ |
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| 220 | |||
| 221 | #ifdef CFF_CONFIG_OPTION_OLD_ENGINE |
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| 222 | FT_LOCAL( FT_Error ) |
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| 223 | cff_decoder_parse_charstrings( CFF_Decoder* decoder, |
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| 224 | FT_Byte* charstring_base, |
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| 225 | FT_ULong charstring_len ); |
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| 226 | #endif |
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| 227 | |||
| 228 | FT_LOCAL( FT_Error ) |
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| 229 | cff_slot_load( CFF_GlyphSlot glyph, |
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| 230 | CFF_Size size, |
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| 231 | FT_UInt glyph_index, |
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| 232 | FT_Int32 load_flags ); |
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| 233 | |||
| 234 | |||
| 235 | FT_END_HEADER |
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| 236 | |||
| 237 | #endif /* __CFFGLOAD_H__ */ |
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| 238 | |||
| 239 | |||
| 240 | /* END */ |