1 /* pdftables.h 2 3 Copyright 2009-2013 Taco Hoekwater <taco@luatex.org> 4 5 This file is part of LuaTeX. 6 7 LuaTeX is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 2 of the License, or (at your 10 option) any later version. 11 12 LuaTeX is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 15 License for more details. 16 17 You should have received a copy of the GNU General Public License along 18 with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */ 19 20 21 #ifndef PDFTABLES_H 22 # define PDFTABLES_H 23 24 extern const char *pdf_obj_typenames[PDF_OBJ_TYPE_MAX + 1]; 25 26 typedef enum { 27 union_type_int, 28 union_type_cstring, 29 } union_type; 30 31 typedef struct { 32 union { 33 int int0; 34 char *str0; 35 } u; 36 union_type u_type; /* integer or char * in union above */ 37 int objptr; 38 } oentry; 39 40 /* 41 The cross-reference table |obj_tab| is an array of |obj_tab_size| of 42 |obj_entry|. Each entry contains five integer fields and represents an object 43 in PDF file whose object number is the index of this entry in |obj_tab|. 44 Objects in |obj_tab| maybe linked into list; objects in such a linked list have 45 the same type. 46 */ 47 48 /* 49 The first field contains information representing identifier of this object. 50 It is usally a number for most of object types, but it may be a string number 51 for named destination or named thread. 52 53 The second field of |obj_entry| contains link to the next 54 object in |obj_tab| if this object is linked in a list. 55 56 The third field holds the byte offset of the object in the output PDF file, 57 or its byte offset within an object stream. As long as the object is not 58 written, this field is used for flags about the write status of the object; 59 then it has a negative value. 60 61 The fourth field holds the object number of the object stream, into which 62 the object is included. 63 64 The last field usually represents the pointer to some auxiliary data 65 structure depending on the object type; however it may be used as a counter as 66 well. 67 */ 68 69 # define obj_info(pdf,A) pdf->obj_tab[(A)].u.int0 /* information representing identifier of this object */ 70 # define obj_start(pdf,A) pdf->obj_tab[(A)].u.str0 71 # define obj_link(pdf,A) pdf->obj_tab[(A)].int1 /* link to the next entry in linked list */ 72 73 # define obj_offset(pdf,A) pdf->obj_tab[(A)].int2 /* negative (flags), or byte offset for this object in PDF 74 output file, or ... */ 75 # define obj_os_objnum(pdf,A) pdf->obj_tab[(A)].int2 /* ... object stream number for this object */ 76 # define obj_os_idx(pdf,A) pdf->obj_tab[(A)].int3 /* index of this object in object stream */ 77 # define obj_aux(pdf,A) pdf->obj_tab[(A)].v.int4 /* auxiliary pointer */ 78 # define obj_stop(pdf,A) pdf->obj_tab[(A)].v.str4 79 # define obj_type(pdf,A) pdf->obj_tab[(A)].objtype 80 81 # define obj_data_ptr obj_aux /* pointer to |pdf->mem| */ 82 83 # define set_obj_link(pdf,A,B) obj_link(pdf,A)=(B) 84 # define set_obj_start(pdf,A,B) obj_start(pdf,A)=(B) 85 # define set_obj_info(pdf,A,B) obj_info(pdf,A)=(B) 86 # define set_obj_offset(pdf,A,B) obj_offset(pdf,A)=(B) 87 # define set_obj_os_objnum(pdf,A,B) obj_offset(pdf,A)=(B) 88 # define set_obj_aux(pdf,A,B) obj_aux(pdf,A)=(B) 89 # define set_obj_stop(pdf,A,B) obj_stop(pdf,A)=(B) 90 # define set_obj_data_ptr(pdf,A,B) obj_data_ptr(pdf,A)=(B) 91 92 # define set_obj_fresh(pdf,A) obj_offset(pdf,(A))=(off_t)-2 93 # define set_obj_scheduled(pdf,A) if (obj_offset(pdf,A)==(off_t)-2) obj_offset(pdf,A)=(off_t)-1 94 # define is_obj_scheduled(pdf,A) ((obj_offset(pdf,A))>(off_t)-2) 95 # define is_obj_written(pdf,A) ((obj_offset(pdf,A))>(off_t)-1) 96 97 /* NOTE: The data structure definitions for the nodes on the typesetting side are 98 inside |nodes.h| */ 99 100 /* Some constants */ 101 # define inf_pk_dpi 72 /* min PK pixel density value from \.{texmf.cnf} */ 102 # define sup_pk_dpi 8000 /* max PK pixel density value from \.{texmf.cnf} */ 103 104 extern int find_obj(PDF pdf, int t, int i, boolean byname); 105 extern void check_obj_exists(PDF pdf, int objnum); 106 extern void check_obj_type(PDF pdf, int t, int objnum); 107 extern int pdf_get_obj(PDF pdf, int t, int i, boolean byname); 108 extern int pdf_create_obj(PDF pdf, int t, int i); 109 110 extern void set_rect_dimens(PDF pdf, halfword p, halfword parent_box, 111 scaledpos cur, scaled_whd alt_rule, scaled margin); 112 113 extern void libpdffinish(PDF); 114 115 extern void dump_pdftex_data(PDF pdf); 116 extern void undump_pdftex_data(PDF pdf); 117 118 # define set_width(A, B) width(A) = (B) 119 # define set_height(A, B) height(A) = (B) 120 # define set_depth(A, B) depth(A) = (B) 121 122 /* interface definitions for eqtb locations */ 123 # define pdf_compress_level int_par(pdf_compress_level_code) 124 # define pdf_decimal_digits int_par(pdf_decimal_digits_code) 125 # define pdf_draftmode int_par(pdf_draftmode_code) 126 # define pdf_gamma int_par(pdf_gamma_code) 127 # define pdf_gen_tounicode int_par(pdf_gen_tounicode_code) 128 # define pdf_image_apply_gamma int_par(pdf_image_apply_gamma_code) 129 # define pdf_image_gamma int_par(pdf_image_gamma_code) 130 # define pdf_image_hicolor int_par(pdf_image_hicolor_code) 131 # define pdf_inclusion_copy_font int_par(pdf_inclusion_copy_font_code) 132 # define pdf_inclusion_errorlevel int_par(pdf_inclusion_errorlevel_code) 133 # define pdf_minor_version int_par(pdf_minor_version_code) 134 # define pdf_move_chars int_par(pdf_move_chars_code) 135 # define pdf_objcompresslevel int_par(pdf_objcompresslevel_code) 136 # define pdf_output int_par(pdf_output_code) 137 # define pdf_pk_mode equiv(pdf_pk_mode_loc) 138 # define pdf_pk_resolution int_par(pdf_pk_resolution_code) 139 # define pdf_replace_font int_par(pdf_replace_font_code) 140 # define pdf_unique_resname int_par(pdf_unique_resname_code) 141 142 #endif /* PDFTABLES_H */ 143