mark.cpp revision 114402
1// -*- C++ -*- 2/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc. 3 Written by James Clark (jjc@jclark.com) 4 5This file is part of groff. 6 7groff is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12groff is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License along 18with groff; see the file COPYING. If not, write to the Free Software 19Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21#include "eqn.h" 22#include "pbox.h" 23 24class mark_box : public pointer_box { 25public: 26 mark_box(box *); 27 int compute_metrics(int); 28 void output(); 29 void debug_print(); 30}; 31 32// we push down marks so that they don't interfere with spacing 33 34box *make_mark_box(box *p) 35{ 36 list_box *b = p->to_list_box(); 37 if (b != 0) { 38 b->list.p[0] = make_mark_box(b->list.p[0]); 39 return b; 40 } 41 else 42 return new mark_box(p); 43} 44 45mark_box::mark_box(box *pp) : pointer_box(pp) 46{ 47} 48 49void mark_box::output() 50{ 51 p->output(); 52} 53 54int mark_box::compute_metrics(int style) 55{ 56 int res = p->compute_metrics(style); 57 if (res) 58 error("multiple marks and lineups"); 59 printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid); 60 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid); 61 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid); 62 printf(".nr " MARK_REG " 0\n"); 63 return FOUND_MARK; 64} 65 66void mark_box::debug_print() 67{ 68 fprintf(stderr, "mark { "); 69 p->debug_print(); 70 fprintf(stderr, " }"); 71} 72 73 74class lineup_box : public pointer_box { 75public: 76 lineup_box(box *); 77 void output(); 78 int compute_metrics(int style); 79 void debug_print(); 80}; 81 82// we push down lineups so that they don't interfere with spacing 83 84box *make_lineup_box(box *p) 85{ 86 list_box *b = p->to_list_box(); 87 if (b != 0) { 88 b->list.p[0] = make_lineup_box(b->list.p[0]); 89 return b; 90 } 91 else 92 return new lineup_box(p); 93} 94 95lineup_box::lineup_box(box *pp) : pointer_box(pp) 96{ 97} 98 99void lineup_box::output() 100{ 101 p->output(); 102} 103 104int lineup_box::compute_metrics(int style) 105{ 106 int res = p->compute_metrics(style); 107 if (res) 108 error("multiple marks and lineups"); 109 printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid); 110 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid); 111 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid); 112 printf(".nr " MARK_REG " 0\n"); 113 return FOUND_LINEUP; 114} 115 116void lineup_box::debug_print() 117{ 118 fprintf(stderr, "lineup { "); 119 p->debug_print(); 120 fprintf(stderr, " }"); 121} 122