1 /* Copyright (C) 1990, 1995, 1996, 1997, 1999, 2001 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: gstype1.h,v 1.9 2003/10/21 01:43:28 igor Exp $ */ 18 /* Client interface to Adobe Type 1 font routines */ 19 20 #ifndef gstype1_INCLUDED 21 # define gstype1_INCLUDED 22 23 /* ------ Normal client interface ------ */ 24 25 #define crypt_charstring_seed 4330 26 typedef struct gs_type1_state_s gs_type1_state; 27 28 #ifndef gx_path_DEFINED 29 # define gx_path_DEFINED 30 typedef struct gx_path_s gx_path; 31 #endif 32 #ifndef gs_font_type1_DEFINED 33 # define gs_font_type1_DEFINED 34 typedef struct gs_font_type1_s gs_font_type1; 35 #endif 36 #ifndef gs_type1_data_s_DEFINED 37 struct gs_type1_data_s; 38 #endif 39 int gs_type1_interp_init(gs_type1_state * pcis, gs_imager_state * pis, 40 gx_path * ppath, const gs_log2_scale_point * pscale, 41 const gs_log2_scale_point * psubpixels, bool no_grid_fitting, 42 int paint_type, gs_font_type1 * pfont); 43 void gs_type1_set_callback_data(gs_type1_state *pcis, void *callback_data); 44 void gs_type1_set_lsb(gs_type1_state * pcis, const gs_point * psbpt); 45 void gs_type1_set_width(gs_type1_state * pcis, const gs_point * pwpt); 46 47 /* Backward compatibility */ 48 #define gs_type1_init(pcis, penum, psbpt, charpath_flag, paint_type, pfont)\ 49 (gs_type1_interp_init(pcis, (gs_imager_state *)((penum)->pgs),\ 50 (penum)->pgs->path, &(penum)->log2_current_scale,\ 51 charpath_flag, paint_type, pfont) |\ 52 ((psbpt) == 0 ? 0 : (gs_type1_set_lsb(pcis, psbpt), 0))) 53 /* 54 * Continue interpreting a (Type 1) CharString. If str != 0, it is taken as 55 * the byte string to interpret. Return 0 on successful completion, <0 on 56 * error, or >0 when client intervention is required (or allowed). The int* 57 * argument is where the othersubr # is stored for callothersubr. 58 */ 59 #define type1_result_sbw 1 /* allow intervention after [h]sbw */ 60 #define type1_result_callothersubr 2 61 62 /* Define the generic procedure type for a CharString interpreter. */ 63 #define charstring_interpret_proc(proc)\ 64 int proc(gs_type1_state *, const gs_glyph_data_t *, int *) 65 typedef charstring_interpret_proc((*charstring_interpret_proc_t)); 66 67 /* Define the Type 1 interpreter. */ 68 charstring_interpret_proc(gs_type1_interpret); 69 /* Define the Type 2 interpreter. */ 70 charstring_interpret_proc(gs_type2_interpret); 71 72 /* ------ CharString number representation ------ */ 73 74 /* Define the representation of integers used by both Type 1 and Type 2. */ 75 typedef enum { 76 77 /* Values from 32 to 246 represent small integers. */ 78 c_num1 = 32, 79 #define c_value_num1(ch) ((int)(byte)(ch) - 139) 80 81 /* The next 4 values represent 2-byte positive integers. */ 82 c_pos2_0 = 247, 83 c_pos2_1 = 248, 84 c_pos2_2 = 249, 85 c_pos2_3 = 250, 86 #define c_value_pos2(c1,c2)\ 87 (((int)(byte)((c1) - (int)c_pos2_0) << 8) + (int)(byte)(c2) + 108) 88 89 /* The next 4 values represent 2-byte negative integers. */ 90 c_neg2_0 = 251, 91 c_neg2_1 = 252, 92 c_neg2_2 = 253, 93 c_neg2_3 = 254 94 #define c_value_neg2(c1,c2)\ 95 -(((int)(byte)((c1) - (int)c_neg2_0) << 8) + (int)(byte)(c2) + 108) 96 97 } char_num_command; 98 99 /* ------ Type 1 & Type 2 CharString representation ------ */ 100 101 /* 102 * We define both the Type 1 and Type 2 operators here, because they 103 * overlap so much. 104 */ 105 typedef enum { 106 107 /* Commands with identical functions in Type 1 and Type 2 */ 108 /* charstrings. */ 109 110 c_undef0 = 0, 111 c_undef2 = 2, 112 c_callsubr = 10, 113 c_return = 11, 114 c_undoc15 = 15, /* An obsolete and undocumented */ 115 /* command used in some very old */ 116 /* Adobe fonts. */ 117 c_undef17 = 17, 118 119 /* Commands with similar but not identical functions */ 120 /* in Type 1 and Type 2 charstrings. */ 121 122 cx_hstem = 1, 123 cx_vstem = 3, 124 cx_vmoveto = 4, 125 cx_rlineto = 5, 126 cx_hlineto = 6, 127 cx_vlineto = 7, 128 cx_rrcurveto = 8, 129 cx_escape = 12, /* extends the command set */ 130 cx_endchar = 14, 131 cx_rmoveto = 21, 132 cx_hmoveto = 22, 133 cx_vhcurveto = 30, 134 cx_hvcurveto = 31, 135 136 cx_num4 = 255, /* 4-byte numbers */ 137 138 /* Commands recognized only in Type 1 charstrings. */ 139 140 c1_closepath = 9, 141 c1_hsbw = 13, 142 143 /* Commands not recognized in Type 1 charstrings. */ 144 145 #define case_c1_undefs\ 146 case 16: case 18: case 19:\ 147 case 20: case 23: case 24:\ 148 case 25: case 26: case 27: case 28: case 29 149 150 /* Commands only recognized in Type 2 charstrings. */ 151 152 c2_blend = 16, 153 c2_hstemhm = 18, 154 c2_hintmask = 19, 155 c2_cntrmask = 20, 156 c2_vstemhm = 23, 157 c2_rcurveline = 24, 158 c2_rlinecurve = 25, 159 c2_vvcurveto = 26, 160 c2_hhcurveto = 27, 161 c2_shortint = 28, 162 c2_callgsubr = 29 163 164 /* Commands not recognized in Type 2 charstrings. */ 165 166 #define case_c2_undefs\ 167 case 9: case 13 168 169 } char_command; 170 171 #define char1_command_names\ 172 0, "hstem", 0, "vstem", "vmoveto",\ 173 "rlineto", "hlineto", "vlineto", "rrcurveto", "closepath",\ 174 "callsubr", "return", "(escape)", "hsbw", "endchar",\ 175 "undoc15", 0, 0, 0, 0,\ 176 0, "rmoveto", "hmoveto", 0, 0,\ 177 0, 0, 0, 0, 0,\ 178 "vhcurveto", "hvcurveto" 179 #define char2_command_names\ 180 0, "hstem", 0, "vstem", "vmoveto",\ 181 "rlineto", "hlineto", "vlineto", "rrcurveto", 0,\ 182 "callsubr", "return", "(escape)", 0, "endchar",\ 183 "undoc15", "blend", 0, "hstemhm", "hintmask",\ 184 "cntrmask", "rmoveto", "hmoveto", "vstemhm", "rcurveline",\ 185 "rlinecurve", "vvcurveto", "hhcurveto", "shortint", "callgsubr",\ 186 "vhcurveto", "hvcurveto" 187 188 /* 189 * Extended (escape) commands in Type 1 charstrings. 190 */ 191 typedef enum { 192 ce1_dotsection = 0, 193 ce1_vstem3 = 1, 194 ce1_hstem3 = 2, 195 ce1_seac = 6, 196 ce1_sbw = 7, 197 ce1_div = 12, 198 ce1_undoc15 = 15, /* An obsolete and undocumented */ 199 /* command used in some very old */ 200 /* Adobe fonts. */ 201 ce1_callothersubr = 16, 202 ce1_pop = 17, 203 ce1_setcurrentpoint = 33 204 } char1_extended_command; 205 206 #define char1_extended_command_count 34 207 #define char1_extended_command_names\ 208 "dotsection", "vstem3", "hstem3", 0, 0,\ 209 0, "seac", "sbw", 0, 0,\ 210 0, 0, "div", 0, 0,\ 211 "undoc15", "callothersubr", "pop", 0, 0,\ 212 0, 0, 0, 0, 0,\ 213 0, 0, 0, 0, 0,\ 214 0, 0, 0, "setcurrentpoint" 215 216 /* 217 * Extended (escape) commands in Type 2 charstrings. 218 */ 219 typedef enum { 220 ce2_and = 3, 221 ce2_or = 4, 222 ce2_not = 5, 223 ce2_store = 8, 224 ce2_abs = 9, 225 ce2_add = 10, 226 ce2_sub = 11, 227 ce2_div = 12, /* same as ce1_div */ 228 ce2_load = 13, 229 ce2_neg = 14, 230 ce2_eq = 15, 231 ce2_drop = 18, 232 ce2_put = 20, 233 ce2_get = 21, 234 ce2_ifelse = 22, 235 ce2_random = 23, 236 ce2_mul = 24, 237 ce2_sqrt = 26, 238 ce2_dup = 27, 239 ce2_exch = 28, 240 ce2_index = 29, 241 ce2_roll = 30, 242 ce2_hflex = 34, 243 ce2_flex = 35, 244 ce2_hflex1 = 36, 245 ce2_flex1 = 37 246 } char2_extended_command; 247 248 #define char2_extended_command_count 38 249 #define char2_extended_command_names\ 250 0, 0, 0, "and", "or",\ 251 "not", 0, 0, "store", "abs",\ 252 "add", "sub", "div", "load", "neg",\ 253 "eq", 0, 0, "drop", 0,\ 254 "put", "get", "ifelse", "random", "mul",\ 255 0, "sqrt", "dup", "exch", "index",\ 256 "roll", 0, 0, 0, "hflex",\ 257 "flex", "hflex1", "flex1" 258 259 #endif /* gstype1_INCLUDED */ 260