out.h

   1 /*      $Id: out.h,v 1.24 2014/10/14 02:16:06 schwarze 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
  20 enum    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
  34 struct  roffcol {
  35         size_t           width; /* width of cell */
  36         size_t           decimal; /* decimal position in cell */
  37         int              flags; /* layout flags, see tbl_cell */
  38 };
  39
  40 struct  roffsu {
  41         enum roffscale    unit;
  42         double            scale;
  43 };
  44
  45 typedef size_t  (*tbl_strlen)(const char *, void *);
  46 typedef size_t  (*tbl_len)(size_t, void *);
  47
  48 struct  rofftbl {
  49         tbl_strlen       slen; /* calculate string length */
  50         tbl_len          len; /* produce width of empty space */
  51         struct roffcol  *cols; /* master column specifiers */
  52         void            *arg; /* passed to slen and len */
  53 };
  54
  55 __BEGIN_DECLS
  56
  57 #define SCALE_VS_INIT(p, v) \
  58         do { (p)->unit = SCALE_VS; \
  59              (p)->scale = (v); } \
  60         while (/* CONSTCOND */ 0)
  61
  62 #define SCALE_HS_INIT(p, v) \
  63         do { (p)->unit = SCALE_EN; \
  64              (p)->scale = (v); } \
  65         while (/* CONSTCOND */ 0)
  66
  67 int               a2roffsu(const char *, struct roffsu *, enum roffscale);
  68 void              tblcalc(struct rofftbl *tbl,
  69                         const struct tbl_span *, size_t);
  70
  71 __END_DECLS
  72
  73 #endif /*!OUT_H*/