out.h

   1 /*      $Id: out.h,v 1.27 2015/11/07 14:01:16 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
  18 enum    roffscale {
  19         SCALE_CM, /* centimeters (c) */
  20         SCALE_IN, /* inches (i) */
  21         SCALE_PC, /* pica (P) */
  22         SCALE_PT, /* points (p) */
  23         SCALE_EM, /* ems (m) */
  24         SCALE_MM, /* mini-ems (M) */
  25         SCALE_EN, /* ens (n) */
  26         SCALE_BU, /* default horizontal (u) */
  27         SCALE_VS, /* default vertical (v) */
  28         SCALE_FS, /* syn. for u (f) */
  29         SCALE_MAX
  30 };
  31
  32 struct  roffcol {
  33         size_t           width; /* width of cell */
  34         size_t           decimal; /* decimal position in cell */
  35         int              flags; /* layout flags, see tbl_cell */
  36 };
  37
  38 struct  roffsu {
  39         enum roffscale    unit;
  40         double            scale;
  41 };
  42
  43 typedef size_t  (*tbl_strlen)(const char *, void *);
  44 typedef size_t  (*tbl_len)(size_t, void *);
  45
  46 struct  rofftbl {
  47         tbl_strlen       slen; /* calculate string length */
  48         tbl_len          len; /* produce width of empty space */
  49         struct roffcol  *cols; /* master column specifiers */
  50         void            *arg; /* passed to slen and len */
  51 };
  52
  53 #define SCALE_VS_INIT(p, v) \
  54         do { (p)->unit = SCALE_VS; \
  55              (p)->scale = (v); } \
  56         while (/* CONSTCOND */ 0)
  57
  58 #define SCALE_HS_INIT(p, v) \
  59         do { (p)->unit = SCALE_EN; \
  60              (p)->scale = (v); } \
  61         while (/* CONSTCOND */ 0)
  62
  63
  64 struct  tbl_span;
  65
  66 int               a2roffsu(const char *, struct roffsu *, enum roffscale);
  67 void              tblcalc(struct rofftbl *tbl,
  68                         const struct tbl_span *, size_t);