1 /* $NetBSD: mark.cpp,v 1.1.1.1 2016/01/13 18:41:49 christos Exp $ */ 2 3 // -*- C++ -*- 4 /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc. 5 Written by James Clark (jjc@jclark.com) 6 7 This file is part of groff. 8 9 groff is free software; you can redistribute it and/or modify it under 10 the terms of the GNU General Public License as published by the Free 11 Software Foundation; either version 2, or (at your option) any later 12 version. 13 14 groff is distributed in the hope that it will be useful, but WITHOUT ANY 15 WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 for more details. 18 19 You should have received a copy of the GNU General Public License along 20 with groff; see the file COPYING. If not, write to the Free Software 21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ 22 23 #include "eqn.h" 24 #include "pbox.h" 25 26 class mark_box : public pointer_box { 27 public: 28 mark_box(box *); 29 int compute_metrics(int); 30 void output(); 31 void debug_print(); 32 }; 33 34 // we push down marks so that they don't interfere with spacing 35 36 box *make_mark_box(box *p) 37 { 38 list_box *b = p->to_list_box(); 39 if (b != 0) { 40 b->list.p[0] = make_mark_box(b->list.p[0]); 41 return b; 42 } 43 else 44 return new mark_box(p); 45 } 46 47 mark_box::mark_box(box *pp) : pointer_box(pp) 48 { 49 } 50 51 void mark_box::output() 52 { 53 p->output(); 54 } 55 56 int mark_box::compute_metrics(int style) 57 { 58 int res = p->compute_metrics(style); 59 if (res) 60 error("multiple marks and lineups"); 61 printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid); 62 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid); 63 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid); 64 printf(".nr " MARK_REG " 0\n"); 65 return FOUND_MARK; 66 } 67 68 void mark_box::debug_print() 69 { 70 fprintf(stderr, "mark { "); 71 p->debug_print(); 72 fprintf(stderr, " }"); 73 } 74 75 76 class lineup_box : public pointer_box { 77 public: 78 lineup_box(box *); 79 void output(); 80 int compute_metrics(int style); 81 void debug_print(); 82 }; 83 84 // we push down lineups so that they don't interfere with spacing 85 86 box *make_lineup_box(box *p) 87 { 88 list_box *b = p->to_list_box(); 89 if (b != 0) { 90 b->list.p[0] = make_lineup_box(b->list.p[0]); 91 return b; 92 } 93 else 94 return new lineup_box(p); 95 } 96 97 lineup_box::lineup_box(box *pp) : pointer_box(pp) 98 { 99 } 100 101 void lineup_box::output() 102 { 103 p->output(); 104 } 105 106 int lineup_box::compute_metrics(int style) 107 { 108 int res = p->compute_metrics(style); 109 if (res) 110 error("multiple marks and lineups"); 111 printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid); 112 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid); 113 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid); 114 printf(".nr " MARK_REG " 0\n"); 115 return FOUND_LINEUP; 116 } 117 118 void lineup_box::debug_print() 119 { 120 fprintf(stderr, "lineup { "); 121 p->debug_print(); 122 fprintf(stderr, " }"); 123 } 124