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/* dvipos-20070107
Copyright (C) 2003 by Jin-Hwan <chofchof@ktug.or.kr>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _DVICORE_H_
#define _DVICORE_H_
#include "utils.h"
/* DVI opcodes */
#define SET_CHAR_0 0
#define SET_CHAR_1 1
/* etc. */
#define SET_CHAR_127 127
#define SET1 128 /* Typesets its single operand between 128 and 255 */
#define SET2 129 /* Typesets its single two byte unsigned operand */
#define SET3 130 /* Typesets its single three byte unsigned operand */
#define SET4 131 /* Typesets its single four byte unsigned operand */
/* Sets a rule of height param1(four bytes) and width param2(four bytes)
* These are *signed*. Nothing typeset for nonpositive values
* However, negative value *do* change current point */
#define SET_RULE 132
#define PUT1 133 /* Like SET1, but point doesn't change */
#define PUT2 134 /* Like SET2 */
#define PUT3 135 /* Like SET3 */
#define PUT4 136 /* Like SET4 */
#define PUT_RULE 137 /* Like SET_RULE */
#define NOP 138
/* Followed by 10 four byte count registers (signed?).
* Last parameter points to previous BOP (backward linked, first BOP has -1).
* BOP clears stack and resets current point. */
#define BOP 139
#define EOP 140
#define PUSH 141 /* Pushes h,v,w,x,y,z */
#define POP 142 /* Opposite of push */
#define RIGHT1 143 /* Move right by one byte signed operand */
#define RIGHT2 144 /* Move right by two byte signed operand */
#define RIGHT3 145 /* Move right by three byte signed operand */
#define RIGHT4 146 /* Move right by four byte signed operand */
#define W0 147 /* Move right w */
#define W1 148 /* w single byte signed operand. Move right by same amount */
#define W2 149 /* Same as W1 with two byte signed operand */
#define W3 150 /* Three byte signed operand */
#define W4 151 /* Four byte signed operand */
#define X0 152 /* Move right x */
#define X1 153 /* Like W1 */
#define X2 154 /* Like W2 */
#define X3 155 /* Like W3 */
#define X4 156 /* Like W4 */
#define DOWN1 157 /* Move down by one byte signed operand */
#define DOWN2 158 /* Two byte signed operand */
#define DOWN3 159 /* Three byte signed operand */
#define DOWN4 160 /* Four byte signed operand */
#define Y0 161 /* Move down by y */
#define Y1 162 /* Move down by one byte signed operand, which replaces Y */
#define Y2 163 /* Two byte signed operand */
#define Y3 164 /* Three byte signed operand */
#define Y4 165 /* Four byte signed operand */
#define Z0 166 /* Like Y0, but use z */
#define Z1 167 /* Like Y1 */
#define Z2 168 /* Like Y2 */
#define Z3 169 /* Like Y3 */
#define Z4 170 /* Like Y4 */
#define FNT_NUM_0 171 /* Switch to font 0 */
#define FNT_NUM_1 172 /* Switch to font 1 */
/* etc. */
#define FNT_NUM_63 234 /* Switch to font 63 */
/* Switch to font described by single byte unsigned operand */
#define FNT1 235
/* Switch to font described by two byte unsigned operand */
#define FNT2 236
/* Switch to font described by three byte unsigned operand */
#define FNT3 237
/* Four byte operator (Knuth says signed, but what would be the point?) */
#define FNT4 238
/* Special. Operand is one byte length. Special follows immediately */
#define XXX1 239
/* Two byte operand */
#define XXX2 240
/* Three byte operand */
#define XXX3 241
/* Four byte operand (Knuth says TeX uses only XXX1 and XXX4 */
#define XXX4 242
/* One byte font number, four byte checksum, four byte magnified size
* (DVI units), four byte designed size, single byte directory length,
* single byte name length, followed by complete name (area+name) */
#define FNT_DEF1 243
#define FNT_DEF2 244 /* Same for two byte font number */
#define FNT_DEF3 245 /* Same for three byte font number */
#define FNT_DEF4 246 /* Four byte font number (Knuth says signed) */
/* Preamble: one byte DVI version (should be 2)
* four byte unsigned numerator
* four byte unsigned denominator -- one DVI unit = den/num*10^(-7) m
* four byte magnification (multiplied by 1000)
* one byte unsigned comment length followed by comment. */
#define PRE 247
/* Postamble: similar to preamble
* four byte pointer to final bop
* four byte numerator
* four byte denominator
* four byte mag
* four byte maximum height (signed?)
* four byte maximum width
* two byte max stack depth required to process file
* two byte number of pages */
#define POST 248
/* End of postamble:
* four byte pointer to POST command
* Version byte (same as preamble)
* Padded by four or more 223's to the end of the file. */
#define POST_POST 249
#define DIR 255 /* Ascii pTeX DIR command */
#define DVI_ID 2 /* ID Byte for current DVI file */
#define DVIV_ID 3 /* with Ascii pTeX VW mode extension */
#define PADDING 223
#define MAX_FONTS_STEP 10
extern int dvi_pages;
extern void dvi_init (int m, int r);
extern void dvi_close (void);
extern void dvi_do_page (int n);
#endif /* _DVICORE_H_ */
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