src/libs/libgroff/paper.cpp

   1 // -*- C++ -*-
   2 /* Copyright (C) 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4      Written by Werner Lemberg (wl@gnu.org)
   5
   6 This file is part of groff.
   7
   8 groff is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 2, or (at your option) any later
  11 version.
  12
  13 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License along
  19 with groff; see the file COPYING.  If not, write to the Free Software
  20 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  21
  22 #include "lib.h"
  23 #include "paper.h"
  24
  25 paper papersizes[NUM_PAPERSIZES];
  26
  27 // length and width in mm
  28 static void add_iso_paper(char series, int offset,
  29                           int start_length, int start_width)
  30 {
  31   int length = start_length;
  32   int width = start_width;
  33   for (int i = 0; i < 8; i++)
  34   {
  35     char *p = new char[3];
  36     p[0] = series;
  37     p[1] = '0' + i;
  38     p[2] = '\0';
  39     papersizes[offset + i].name = p;
  40     // convert mm to inch
  41     papersizes[offset + i].length = (double)length / 25.4;
  42     papersizes[offset + i].width = (double)width / 25.4;
  43     // after division by two, values must be rounded down to the next
  44     // integer (as specified by ISO)
  45     int tmp = length;
  46     length = width;
  47     width = tmp / 2;
  48   }
  49 }
  50
  51 // length and width in inch
  52 static void add_american_paper(const char *name, int idx,
  53                                double length, double width )
  54 {
  55   char *p = new char[strlen(name) + 1];
  56   strcpy(p, name);
  57   papersizes[idx].name = p;
  58   papersizes[idx].length = length;
  59   papersizes[idx].width = width;
  60 }
  61
  62 int papersize_init::initialised = 0;
  63
  64 papersize_init::papersize_init()
  65 {
  66   if (initialised)
  67     return;
  68   initialised = 1;
  69   add_iso_paper('a', 0, 1189, 841);
  70   add_iso_paper('b', 8, 1414, 1000);
  71   add_iso_paper('c', 16, 1297, 917);
  72   add_iso_paper('d', 24, 1090, 771);
  73   add_american_paper("letter", 32, 11, 8.5);
  74   add_american_paper("legal", 33, 14, 8.5);
  75   add_american_paper("tabloid", 34, 17, 11);
  76   add_american_paper("ledger", 35, 11, 17);
  77   add_american_paper("statement", 36, 8.5, 5.5);
  78   add_american_paper("executive", 37, 10, 7.5);
  79   // the next three entries are for grolj4
  80   add_american_paper("com10", 38, 9.5, 4.125);
  81   add_american_paper("monarch", 39, 7.5, 3.875);
  82   // this is an ISO format, but it easier to use add_american_paper
  83   add_american_paper("dl", 40, 220/25.4, 110/25.4);
  84 }