1/*	$Id: out.h,v 1.21 2011/07/17 15:24:25 kristaps Exp $ */
2/*
3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17#ifndef OUT_H
18#define OUT_H
19
20enum	roffscale {
21	SCALE_CM, /* centimeters (c) */
22	SCALE_IN, /* inches (i) */
23	SCALE_PC, /* pica (P) */
24	SCALE_PT, /* points (p) */
25	SCALE_EM, /* ems (m) */
26	SCALE_MM, /* mini-ems (M) */
27	SCALE_EN, /* ens (n) */
28	SCALE_BU, /* default horizontal (u) */
29	SCALE_VS, /* default vertical (v) */
30	SCALE_FS, /* syn. for u (f) */
31	SCALE_MAX
32};
33
34struct	roffcol {
35	size_t		 width; /* width of cell */
36	size_t		 decimal; /* decimal position in cell */
37};
38
39struct	roffsu {
40	enum roffscale	  unit;
41	double		  scale;
42};
43
44typedef	size_t	(*tbl_strlen)(const char *, void *);
45typedef	size_t	(*tbl_len)(size_t, void *);
46
47struct	rofftbl {
48	tbl_strlen	 slen; /* calculate string length */
49	tbl_len		 len; /* produce width of empty space */
50	struct roffcol	*cols; /* master column specifiers */
51	void		*arg; /* passed to slen and len */
52};
53
54__BEGIN_DECLS
55
56#define	SCALE_VS_INIT(p, v) \
57	do { (p)->unit = SCALE_VS; \
58	     (p)->scale = (v); } \
59	while (/* CONSTCOND */ 0)
60
61#define	SCALE_HS_INIT(p, v) \
62	do { (p)->unit = SCALE_BU; \
63	     (p)->scale = (v); } \
64	while (/* CONSTCOND */ 0)
65
66int	  	  a2roffsu(const char *, struct roffsu *, enum roffscale);
67void	  	  tblcalc(struct rofftbl *tbl, const struct tbl_span *);
68
69__END_DECLS
70
71#endif /*!OUT_H*/
72